import { mkdirSync, mkdtempSync, rmSync, writeFileSync } from "node:fs";
import os from "node:os";
import path from "node:path";

import * as NodeServices from "@effect/platform-node/NodeServices";
import type {
  Options as ClaudeQueryOptions,
  PermissionMode,
  PermissionResult,
  SDKMessage,
  SDKUserMessage,
} from "@anthropic-ai/claude-agent-sdk";
import {
  ApprovalRequestId,
  ProviderItemId,
  ProviderRuntimeEvent,
  type RuntimeMode,
  ThreadId,
} from "@t3tools/contracts";
import { assert, describe, it } from "@effect/vitest";
import { Effect, Fiber, Layer, Random, Stream } from "effect";

import { attachmentRelativePath } from "../../attachmentStore.ts";
import { ServerConfig } from "../../config.ts";
import { ServerSettingsService } from "../../serverSettings.ts";
import { ProviderAdapterValidationError } from "../Errors.ts";
import { ClaudeAdapter } from "../Services/ClaudeAdapter.ts";
import { makeClaudeAdapterLive, type ClaudeAdapterLiveOptions } from "./ClaudeAdapter.ts";

class FakeClaudeQuery implements AsyncIterable<SDKMessage> {
  private readonly queue: Array<SDKMessage> = [];
  private readonly waiters: Array<{
    readonly resolve: (value: IteratorResult<SDKMessage>) => void;
    readonly reject: (reason: unknown) => void;
  }> = [];
  private done = false;
  private failure: unknown | undefined;

  public readonly interruptCalls: Array<void> = [];
  public readonly setModelCalls: Array<string | undefined> = [];
  public readonly setPermissionModeCalls: Array<string> = [];
  public readonly setMaxThinkingTokensCalls: Array<number | null> = [];
  public closeCalls = 0;

  emit(message: SDKMessage): void {
    if (this.done) {
      return;
    }
    const waiter = this.waiters.shift();
    if (waiter) {
      waiter.resolve({ done: false, value: message });
      return;
    }
    this.queue.push(message);
  }

  fail(cause: unknown): void {
    if (this.done) {
      return;
    }
    this.done = true;
    this.failure = cause;
    for (const waiter of this.waiters.splice(0)) {
      waiter.reject(cause);
    }
  }

  finish(): void {
    if (this.done) {
      return;
    }
    this.done = true;
    this.failure = undefined;
    for (const waiter of this.waiters.splice(0)) {
      waiter.resolve({ done: true, value: undefined });
    }
  }

  readonly interrupt = async (): Promise<void> => {
    this.interruptCalls.push(undefined);
  };

  readonly setModel = async (model?: string): Promise<void> => {
    this.setModelCalls.push(model);
  };

  readonly setPermissionMode = async (mode: PermissionMode): Promise<void> => {
    this.setPermissionModeCalls.push(mode);
  };

  readonly setMaxThinkingTokens = async (maxThinkingTokens: number | null): Promise<void> => {
    this.setMaxThinkingTokensCalls.push(maxThinkingTokens);
  };

  readonly close = (): void => {
    this.closeCalls += 1;
    this.finish();
  };

  [Symbol.asyncIterator](): AsyncIterator<SDKMessage> {
    return {
      next: () => {
        if (this.queue.length > 0) {
          const value = this.queue.shift();
          if (value) {
            return Promise.resolve({
              done: false,
              value,
            });
          }
        }
        if (this.failure !== undefined) {
          const failure = this.failure;
          this.failure = undefined;
          return Promise.reject(failure);
        }
        if (this.done) {
          return Promise.resolve({
            done: true,
            value: undefined,
          });
        }
        return new Promise((resolve, reject) => {
          this.waiters.push({
            resolve,
            reject,
          });
        });
      },
    };
  }
}

function makeHarness(config?: {
  readonly nativeEventLogPath?: string;
  readonly nativeEventLogger?: ClaudeAdapterLiveOptions["nativeEventLogger"];
  readonly cwd?: string;
  readonly baseDir?: string;
}) {
  const query = new FakeClaudeQuery();
  let createInput:
    | {
        readonly prompt: AsyncIterable<SDKUserMessage>;
        readonly options: ClaudeQueryOptions;
      }
    | undefined;

  const adapterOptions: ClaudeAdapterLiveOptions = {
    createQuery: (input) => {
      createInput = input;
      return query;
    },
    ...(config?.nativeEventLogger
      ? {
          nativeEventLogger: config.nativeEventLogger,
        }
      : {}),
    ...(config?.nativeEventLogPath
      ? {
          nativeEventLogPath: config.nativeEventLogPath,
        }
      : {}),
  };

  return {
    layer: makeClaudeAdapterLive(adapterOptions).pipe(
      Layer.provideMerge(
        ServerConfig.layerTest(
          config?.cwd ?? "/tmp/claude-adapter-test",
          config?.baseDir ?? "/tmp",
        ),
      ),
      Layer.provideMerge(ServerSettingsService.layerTest()),
      Layer.provideMerge(NodeServices.layer),
    ),
    query,
    getLastCreateQueryInput: () => createInput,
  };
}

function makeDeterministicRandomService(seed = 0x1234_5678): {
  nextIntUnsafe: () => number;
  nextDoubleUnsafe: () => number;
} {
  let state = seed >>> 0;
  const nextIntUnsafe = (): number => {
    state = (Math.imul(1_664_525, state) + 1_013_904_223) >>> 0;
    return state;
  };

  return {
    nextIntUnsafe,
    nextDoubleUnsafe: () => nextIntUnsafe() / 0x1_0000_0000,
  };
}

async function readFirstPromptText(
  input:
    | {
        readonly prompt: AsyncIterable<SDKUserMessage>;
      }
    | undefined,
): Promise<string | undefined> {
  const iterator = input?.prompt[Symbol.asyncIterator]();
  if (!iterator) {
    return undefined;
  }
  const next = await iterator.next();
  if (next.done) {
    return undefined;
  }
  if (typeof next.value.message.content === "string") {
    return next.value.message.content;
  }
  const content = next.value.message.content[0];
  if (!content || content.type !== "text") {
    return undefined;
  }
  return content.text;
}

async function readFirstPromptMessage(
  input:
    | {
        readonly prompt: AsyncIterable<SDKUserMessage>;
      }
    | undefined,
): Promise<SDKUserMessage | undefined> {
  const iterator = input?.prompt[Symbol.asyncIterator]();
  if (!iterator) {
    return undefined;
  }
  const next = await iterator.next();
  if (next.done) {
    return undefined;
  }
  return next.value;
}

const THREAD_ID = ThreadId.makeUnsafe("thread-claude-1");
const RESUME_THREAD_ID = ThreadId.makeUnsafe("thread-claude-resume");

describe("ClaudeAdapterLive", () => {
  it.effect("returns validation error for non-claude provider on startSession", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;
      const result = yield* adapter
        .startSession({ threadId: THREAD_ID, provider: "codex", runtimeMode: "full-access" })
        .pipe(Effect.result);

      assert.equal(result._tag, "Failure");
      if (result._tag !== "Failure") {
        return;
      }
      assert.deepEqual(
        result.failure,
        new ProviderAdapterValidationError({
          provider: "claudeAgent",
          operation: "startSession",
          issue: "Expected provider 'claudeAgent' but received 'codex'.",
        }),
      );
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("derives bypass permission mode from full-access runtime policy", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;
      yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      const createInput = harness.getLastCreateQueryInput();
      assert.deepEqual(createInput?.options.settingSources, ["user", "project", "local"]);
      assert.equal(createInput?.options.permissionMode, "bypassPermissions");
      assert.equal(createInput?.options.allowDangerouslySkipPermissions, true);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("loads Claude filesystem settings sources for SDK sessions", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;
      yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "approval-required",
      });

      const createInput = harness.getLastCreateQueryInput();
      assert.deepEqual(createInput?.options.settingSources, ["user", "project", "local"]);
      assert.equal(createInput?.options.permissionMode, undefined);
      assert.equal(createInput?.options.allowDangerouslySkipPermissions, undefined);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("uses bypass permissions for full-access claude sessions", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;
      yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      const createInput = harness.getLastCreateQueryInput();
      assert.equal(createInput?.options.permissionMode, "bypassPermissions");
      assert.equal(createInput?.options.allowDangerouslySkipPermissions, true);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("forwards claude effort levels into query options", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;
      yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        modelSelection: {
          provider: "claudeAgent",
          model: "claude-opus-4-6",
          options: {
            effort: "max",
          },
        },
        runtimeMode: "full-access",
      });

      const createInput = harness.getLastCreateQueryInput();
      assert.equal(createInput?.options.effort, "max");
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("falls back to default effort when unsupported max is requested for Sonnet 4.6", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;
      yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        modelSelection: {
          provider: "claudeAgent",
          model: "claude-sonnet-4-6",
          options: {
            effort: "max",
          },
        },
        runtimeMode: "full-access",
      });

      const createInput = harness.getLastCreateQueryInput();
      assert.equal(createInput?.options.effort, "high");
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("ignores adaptive effort for Haiku 4.5", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;
      yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        modelSelection: {
          provider: "claudeAgent",
          model: "claude-haiku-4-5",
          options: {
            effort: "high",
          },
        },
        runtimeMode: "full-access",
      });

      const createInput = harness.getLastCreateQueryInput();
      assert.equal(createInput?.options.effort, undefined);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("forwards Claude thinking toggle into SDK settings for Haiku 4.5", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;
      yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        modelSelection: {
          provider: "claudeAgent",
          model: "claude-haiku-4-5",
          options: {
            thinking: false,
          },
        },
        runtimeMode: "full-access",
      });

      const createInput = harness.getLastCreateQueryInput();
      assert.deepEqual(createInput?.options.settings, {
        alwaysThinkingEnabled: false,
      });
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("ignores Claude thinking toggle for non-Haiku models", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;
      yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        modelSelection: {
          provider: "claudeAgent",
          model: "claude-sonnet-4-6",
          options: {
            thinking: false,
          },
        },
        runtimeMode: "full-access",
      });

      const createInput = harness.getLastCreateQueryInput();
      assert.equal(createInput?.options.settings, undefined);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("forwards claude fast mode into SDK settings", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;
      yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        modelSelection: {
          provider: "claudeAgent",
          model: "claude-opus-4-6",
          options: {
            fastMode: true,
          },
        },
        runtimeMode: "full-access",
      });

      const createInput = harness.getLastCreateQueryInput();
      assert.deepEqual(createInput?.options.settings, {
        fastMode: true,
      });
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("ignores claude fast mode for non-opus models", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;
      yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        modelSelection: {
          provider: "claudeAgent",
          model: "claude-sonnet-4-6",
          options: {
            fastMode: true,
          },
        },
        runtimeMode: "full-access",
      });

      const createInput = harness.getLastCreateQueryInput();
      assert.equal(createInput?.options.settings, undefined);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("treats ultrathink as a prompt keyword instead of a session effort", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;
      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        modelSelection: {
          provider: "claudeAgent",
          model: "claude-sonnet-4-6",
          options: {
            effort: "ultrathink",
          },
        },
        runtimeMode: "full-access",
      });

      yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "Investigate the edge cases",
        attachments: [],
        modelSelection: {
          provider: "claudeAgent",
          model: "claude-sonnet-4-6",
          options: {
            effort: "ultrathink",
          },
        },
      });

      const createInput = harness.getLastCreateQueryInput();
      assert.equal(createInput?.options.effort, "high");
      const promptText = yield* Effect.promise(() => readFirstPromptText(createInput));
      assert.equal(promptText, "Ultrathink:\nInvestigate the edge cases");
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("embeds image attachments in Claude user messages", () => {
    const baseDir = mkdtempSync(path.join(os.tmpdir(), "claude-attachments-"));
    const harness = makeHarness({
      cwd: "/tmp/project-claude-attachments",
      baseDir,
    });
    return Effect.gen(function* () {
      yield* Effect.addFinalizer(() =>
        Effect.sync(() =>
          rmSync(baseDir, {
            recursive: true,
            force: true,
          }),
        ),
      );

      const adapter = yield* ClaudeAdapter;
      const { attachmentsDir } = yield* ServerConfig;

      const attachment = {
        type: "image" as const,
        id: "thread-claude-attachment-12345678-1234-1234-1234-123456789abc",
        name: "diagram.png",
        mimeType: "image/png",
        sizeBytes: 4,
      };
      const attachmentPath = path.join(attachmentsDir, attachmentRelativePath(attachment));
      mkdirSync(path.dirname(attachmentPath), { recursive: true });
      writeFileSync(attachmentPath, Uint8Array.from([1, 2, 3, 4]));

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "What's in this image?",
        attachments: [attachment],
      });

      const createInput = harness.getLastCreateQueryInput();
      const promptMessage = yield* Effect.promise(() => readFirstPromptMessage(createInput));
      assert.isDefined(promptMessage);
      assert.deepEqual(promptMessage?.message.content, [
        {
          type: "text",
          text: "What's in this image?",
        },
        {
          type: "image",
          source: {
            type: "base64",
            media_type: "image/png",
            data: "AQIDBA==",
          },
        },
      ]);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("maps Claude stream/runtime messages to canonical provider runtime events", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const runtimeEventsFiber = yield* Stream.take(adapter.streamEvents, 10).pipe(
        Stream.runCollect,
        Effect.forkChild,
      );

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        modelSelection: {
          provider: "claudeAgent",
          model: "claude-sonnet-4-5",
        },
        runtimeMode: "full-access",
      });

      const turn = yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "hello",
        attachments: [],
      });

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-1",
        uuid: "stream-0",
        parent_tool_use_id: null,
        event: {
          type: "content_block_start",
          index: 0,
          content_block: {
            type: "text",
            text: "",
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-1",
        uuid: "stream-1",
        parent_tool_use_id: null,
        event: {
          type: "content_block_delta",
          index: 0,
          delta: {
            type: "text_delta",
            text: "Hi",
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-1",
        uuid: "stream-2",
        parent_tool_use_id: null,
        event: {
          type: "content_block_stop",
          index: 0,
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-1",
        uuid: "stream-3",
        parent_tool_use_id: null,
        event: {
          type: "content_block_start",
          index: 1,
          content_block: {
            type: "tool_use",
            id: "tool-1",
            name: "Bash",
            input: {
              command: "ls",
            },
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-1",
        uuid: "stream-4",
        parent_tool_use_id: null,
        event: {
          type: "content_block_stop",
          index: 1,
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "assistant",
        session_id: "sdk-session-1",
        uuid: "assistant-1",
        parent_tool_use_id: null,
        message: {
          id: "assistant-message-1",
          content: [{ type: "text", text: "Hi" }],
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "result",
        subtype: "success",
        is_error: false,
        errors: [],
        session_id: "sdk-session-1",
        uuid: "result-1",
      } as unknown as SDKMessage);

      const runtimeEvents = Array.from(yield* Fiber.join(runtimeEventsFiber));
      assert.deepEqual(
        runtimeEvents.map((event) => event.type),
        [
          "session.started",
          "session.configured",
          "session.state.changed",
          "turn.started",
          "thread.started",
          "content.delta",
          "item.completed",
          "item.started",
          "item.completed",
          "turn.completed",
        ],
      );

      const turnStarted = runtimeEvents[3];
      assert.equal(turnStarted?.type, "turn.started");
      if (turnStarted?.type === "turn.started") {
        assert.equal(String(turnStarted.turnId), String(turn.turnId));
      }

      const deltaEvent = runtimeEvents.find((event) => event.type === "content.delta");
      assert.equal(deltaEvent?.type, "content.delta");
      if (deltaEvent?.type === "content.delta") {
        assert.equal(deltaEvent.payload.delta, "Hi");
        assert.equal(String(deltaEvent.turnId), String(turn.turnId));
      }

      const toolStarted = runtimeEvents.find((event) => event.type === "item.started");
      assert.equal(toolStarted?.type, "item.started");
      if (toolStarted?.type === "item.started") {
        assert.equal(toolStarted.payload.itemType, "command_execution");
      }

      const assistantCompletedIndex = runtimeEvents.findIndex(
        (event) =>
          event.type === "item.completed" && event.payload.itemType === "assistant_message",
      );
      const toolStartedIndex = runtimeEvents.findIndex((event) => event.type === "item.started");
      assert.equal(
        assistantCompletedIndex >= 0 &&
          toolStartedIndex >= 0 &&
          assistantCompletedIndex < toolStartedIndex,
        true,
      );

      const turnCompleted = runtimeEvents[runtimeEvents.length - 1];
      assert.equal(turnCompleted?.type, "turn.completed");
      if (turnCompleted?.type === "turn.completed") {
        assert.equal(String(turnCompleted.turnId), String(turn.turnId));
        assert.equal(turnCompleted.payload.state, "completed");
      }
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("maps Claude reasoning deltas, streamed tool inputs, and tool results", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const runtimeEventsFiber = yield* Stream.take(adapter.streamEvents, 11).pipe(
        Stream.runCollect,
        Effect.forkChild,
      );

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      const turn = yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "hello",
        attachments: [],
      });

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-tool-streams",
        uuid: "stream-thinking",
        parent_tool_use_id: null,
        event: {
          type: "content_block_delta",
          index: 0,
          delta: {
            type: "thinking_delta",
            thinking: "Let",
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-tool-streams",
        uuid: "stream-tool-start",
        parent_tool_use_id: null,
        event: {
          type: "content_block_start",
          index: 1,
          content_block: {
            type: "tool_use",
            id: "tool-grep-1",
            name: "Grep",
            input: {},
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-tool-streams",
        uuid: "stream-tool-input-1",
        parent_tool_use_id: null,
        event: {
          type: "content_block_delta",
          index: 1,
          delta: {
            type: "input_json_delta",
            partial_json: '{"pattern":"foo","path":"src"}',
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-tool-streams",
        uuid: "stream-tool-stop",
        parent_tool_use_id: null,
        event: {
          type: "content_block_stop",
          index: 1,
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "user",
        session_id: "sdk-session-tool-streams",
        uuid: "user-tool-result",
        parent_tool_use_id: null,
        message: {
          role: "user",
          content: [
            {
              type: "tool_result",
              tool_use_id: "tool-grep-1",
              content: "src/example.ts:1:foo",
            },
          ],
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "result",
        subtype: "success",
        is_error: false,
        errors: [],
        session_id: "sdk-session-tool-streams",
        uuid: "result-tool-streams",
      } as unknown as SDKMessage);

      const runtimeEvents = Array.from(yield* Fiber.join(runtimeEventsFiber));
      assert.deepEqual(
        runtimeEvents.map((event) => event.type),
        [
          "session.started",
          "session.configured",
          "session.state.changed",
          "turn.started",
          "thread.started",
          "content.delta",
          "item.started",
          "item.updated",
          "item.updated",
          "item.completed",
          "turn.completed",
        ],
      );

      const reasoningDelta = runtimeEvents.find(
        (event) => event.type === "content.delta" && event.payload.streamKind === "reasoning_text",
      );
      assert.equal(reasoningDelta?.type, "content.delta");
      if (reasoningDelta?.type === "content.delta") {
        assert.equal(reasoningDelta.payload.delta, "Let");
        assert.equal(String(reasoningDelta.turnId), String(turn.turnId));
      }

      const toolStarted = runtimeEvents.find((event) => event.type === "item.started");
      assert.equal(toolStarted?.type, "item.started");
      if (toolStarted?.type === "item.started") {
        assert.equal(toolStarted.payload.itemType, "dynamic_tool_call");
      }

      const toolInputUpdated = runtimeEvents.find(
        (event) =>
          event.type === "item.updated" &&
          (event.payload.data as { input?: { pattern?: string; path?: string } } | undefined)?.input
            ?.pattern === "foo",
      );
      assert.equal(toolInputUpdated?.type, "item.updated");
      if (toolInputUpdated?.type === "item.updated") {
        assert.deepEqual(toolInputUpdated.payload.data, {
          toolName: "Grep",
          input: {
            pattern: "foo",
            path: "src",
          },
        });
      }

      const toolResultUpdated = runtimeEvents.find(
        (event) =>
          event.type === "item.updated" &&
          (event.payload.data as { result?: { tool_use_id?: string } } | undefined)?.result
            ?.tool_use_id === "tool-grep-1",
      );
      assert.equal(toolResultUpdated?.type, "item.updated");
      if (toolResultUpdated?.type === "item.updated") {
        assert.equal(
          (
            toolResultUpdated.payload.data as {
              result?: { content?: string };
            }
          ).result?.content,
          "src/example.ts:1:foo",
        );
      }
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("classifies Claude Task tool invocations as collaboration agent work", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const runtimeEventsFiber = yield* Stream.take(adapter.streamEvents, 8).pipe(
        Stream.runCollect,
        Effect.forkChild,
      );

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "delegate this",
        attachments: [],
      });

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-task",
        uuid: "stream-task-1",
        parent_tool_use_id: null,
        event: {
          type: "content_block_start",
          index: 0,
          content_block: {
            type: "tool_use",
            id: "tool-task-1",
            name: "Task",
            input: {
              description: "Review the database layer",
              prompt: "Audit the SQL changes",
              subagent_type: "code-reviewer",
            },
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "assistant",
        session_id: "sdk-session-task",
        uuid: "assistant-task-1",
        parent_tool_use_id: null,
        message: {
          id: "assistant-message-task-1",
          content: [{ type: "text", text: "Delegated" }],
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "result",
        subtype: "success",
        is_error: false,
        errors: [],
        session_id: "sdk-session-task",
        uuid: "result-task-1",
      } as unknown as SDKMessage);

      const runtimeEvents = Array.from(yield* Fiber.join(runtimeEventsFiber));
      const toolStarted = runtimeEvents.find((event) => event.type === "item.started");
      assert.equal(toolStarted?.type, "item.started");
      if (toolStarted?.type === "item.started") {
        assert.equal(toolStarted.payload.itemType, "collab_agent_tool_call");
        assert.equal(toolStarted.payload.title, "Subagent task");
      }
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("treats user-aborted Claude results as interrupted without a runtime error", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const runtimeEventsFiber = yield* Stream.take(adapter.streamEvents, 6).pipe(
        Stream.runCollect,
        Effect.forkChild,
      );

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      const turn = yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "hello",
        attachments: [],
      });

      harness.query.emit({
        type: "result",
        subtype: "error_during_execution",
        is_error: false,
        errors: ["Error: Request was aborted."],
        stop_reason: "tool_use",
        session_id: "sdk-session-abort",
        uuid: "result-abort",
      } as unknown as SDKMessage);

      const runtimeEvents = Array.from(yield* Fiber.join(runtimeEventsFiber));
      assert.deepEqual(
        runtimeEvents.map((event) => event.type),
        [
          "session.started",
          "session.configured",
          "session.state.changed",
          "turn.started",
          "thread.started",
          "turn.completed",
        ],
      );

      const turnCompleted = runtimeEvents[runtimeEvents.length - 1];
      assert.equal(turnCompleted?.type, "turn.completed");
      if (turnCompleted?.type === "turn.completed") {
        assert.equal(String(turnCompleted.turnId), String(turn.turnId));
        assert.equal(turnCompleted.payload.state, "interrupted");
        assert.equal(turnCompleted.payload.errorMessage, "Error: Request was aborted.");
        assert.equal(turnCompleted.payload.stopReason, "tool_use");
      }
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("closes the session when the Claude stream aborts after a turn starts", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const services = yield* Effect.services();
      const runFork = Effect.runForkWith(services);

      const adapter = yield* ClaudeAdapter;
      const runtimeEvents: Array<ProviderRuntimeEvent> = [];

      const runtimeEventsFiber = runFork(
        Stream.runForEach(adapter.streamEvents, (event) =>
          Effect.sync(() => {
            runtimeEvents.push(event);
          }),
        ),
      );

      yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      const turn = yield* adapter.sendTurn({
        threadId: THREAD_ID,
        input: "hello",
        attachments: [],
      });

      harness.query.fail(new Error("All fibers interrupted without error"));

      yield* Effect.yieldNow;
      yield* Effect.yieldNow;
      yield* Effect.yieldNow;
      runtimeEventsFiber.interruptUnsafe();
      assert.deepEqual(
        runtimeEvents.map((event) => event.type),
        [
          "session.started",
          "session.configured",
          "session.state.changed",
          "turn.started",
          "turn.completed",
          "session.exited",
        ],
      );

      const turnCompleted = runtimeEvents[4];
      assert.equal(turnCompleted?.type, "turn.completed");
      if (turnCompleted?.type === "turn.completed") {
        assert.equal(String(turnCompleted.turnId), String(turn.turnId));
        assert.equal(turnCompleted.payload.state, "interrupted");
        assert.equal(turnCompleted.payload.errorMessage, "Claude runtime interrupted.");
      }

      const sessionExited = runtimeEvents[5];
      assert.equal(sessionExited?.type, "session.exited");

      assert.equal(yield* adapter.hasSession(THREAD_ID), false);
      const sessions = yield* adapter.listSessions();
      assert.equal(sessions.length, 0);
      assert.equal(harness.query.closeCalls, 1);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("stopSession does not throw into the SDK prompt consumer", () => {
    // The SDK consumes user messages via `for await (... of prompt)`.
    // Stopping a session must end that loop cleanly — not throw an error.
    //
    // FakeClaudeQuery.close() masks this by resolving pending iterators
    // before the shutdown propagates. Override it to match real SDK behavior
    // where close() does not resolve the prompt consumer.
    const query = new FakeClaudeQuery();
    (query as { close: () => void }).close = () => {
      query.closeCalls += 1;
    };

    let promptConsumerError: unknown = undefined;

    const layer = makeClaudeAdapterLive({
      createQuery: (input) => {
        // Simulate the SDK consuming the prompt iterable
        (async () => {
          try {
            for await (const _message of input.prompt) {
              /* SDK processes user messages */
            }
          } catch (error) {
            promptConsumerError = error;
          }
        })();
        return query;
      },
    }).pipe(
      Layer.provideMerge(ServerConfig.layerTest("/tmp/claude-adapter-test", "/tmp")),
      Layer.provideMerge(ServerSettingsService.layerTest()),
      Layer.provideMerge(NodeServices.layer),
    );

    return Effect.gen(function* () {
      const services = yield* Effect.services();
      const runFork = Effect.runForkWith(services);

      const adapter = yield* ClaudeAdapter;

      const runtimeEventsFiber = runFork(
        Stream.runForEach(adapter.streamEvents, () => Effect.void),
      );

      yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      yield* adapter.stopSession(THREAD_ID);

      yield* Effect.yieldNow;
      yield* Effect.yieldNow;
      yield* Effect.yieldNow;
      yield* Effect.promise(() => new Promise((resolve) => setTimeout(resolve, 50)));

      runtimeEventsFiber.interruptUnsafe();

      assert.equal(
        promptConsumerError,
        undefined,
        `Prompt consumer should not receive a thrown error on session stop, ` +
          `but got: "${promptConsumerError instanceof Error ? promptConsumerError.message : String(promptConsumerError)}"`,
      );
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(layer),
    );
  });

  it.effect("forwards Claude task progress summaries for subagent updates", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const runtimeEventsFiber = yield* Stream.take(adapter.streamEvents, 6).pipe(
        Stream.runCollect,
        Effect.forkChild,
      );

      yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      harness.query.emit({
        type: "system",
        subtype: "task_progress",
        task_id: "task-subagent-1",
        description: "Running background teammate",
        summary: "Code reviewer checked the migration edge cases.",
        usage: {
          total_tokens: 123,
          tool_uses: 4,
          duration_ms: 987,
        },
        session_id: "sdk-session-task-summary",
        uuid: "task-progress-1",
      } as unknown as SDKMessage);

      const runtimeEvents = Array.from(yield* Fiber.join(runtimeEventsFiber));
      const progressEvent = runtimeEvents.find((event) => event.type === "task.progress");
      assert.equal(progressEvent?.type, "task.progress");
      if (progressEvent?.type === "task.progress") {
        assert.equal(
          progressEvent.payload.summary,
          "Code reviewer checked the migration edge cases.",
        );
        assert.equal(progressEvent.payload.description, "Running background teammate");
      }
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("emits thread token usage updates from Claude task progress", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const runtimeEventsFiber = yield* Stream.take(adapter.streamEvents, 6).pipe(
        Stream.runCollect,
        Effect.forkChild,
      );

      yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      harness.query.emit({
        type: "system",
        subtype: "task_progress",
        task_id: "task-usage-1",
        description: "Thinking through the patch",
        usage: {
          total_tokens: 321,
          tool_uses: 2,
          duration_ms: 654,
        },
        session_id: "sdk-session-task-usage",
        uuid: "task-usage-progress-1",
      } as unknown as SDKMessage);

      const runtimeEvents = Array.from(yield* Fiber.join(runtimeEventsFiber));
      const usageEvent = runtimeEvents.find((event) => event.type === "thread.token-usage.updated");
      const progressEvent = runtimeEvents.find((event) => event.type === "task.progress");
      assert.equal(usageEvent?.type, "thread.token-usage.updated");
      if (usageEvent?.type === "thread.token-usage.updated") {
        assert.deepEqual(usageEvent.payload, {
          usage: {
            usedTokens: 321,
            lastUsedTokens: 321,
            toolUses: 2,
            durationMs: 654,
          },
        });
      }
      assert.equal(progressEvent?.type, "task.progress");
      if (usageEvent && progressEvent) {
        assert.notStrictEqual(usageEvent.eventId, progressEvent.eventId);
      }
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("emits Claude context window on result completion usage snapshots", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const runtimeEventsFiber = yield* Stream.take(adapter.streamEvents, 7).pipe(
        Stream.runCollect,
        Effect.forkChild,
      );

      yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      yield* adapter.sendTurn({
        threadId: THREAD_ID,
        input: "hello",
        attachments: [],
      });

      harness.query.emit({
        type: "result",
        subtype: "success",
        is_error: false,
        duration_ms: 1234,
        duration_api_ms: 1200,
        num_turns: 1,
        result: "done",
        stop_reason: "end_turn",
        session_id: "sdk-session-result-usage",
        usage: {
          input_tokens: 4,
          cache_creation_input_tokens: 2715,
          cache_read_input_tokens: 21144,
          output_tokens: 679,
        },
        modelUsage: {
          "claude-opus-4-6": {
            contextWindow: 200000,
            maxOutputTokens: 64000,
          },
        },
      } as unknown as SDKMessage);
      harness.query.finish();

      const runtimeEvents = Array.from(yield* Fiber.join(runtimeEventsFiber));
      const usageEvent = runtimeEvents.find((event) => event.type === "thread.token-usage.updated");
      assert.equal(usageEvent?.type, "thread.token-usage.updated");
      if (usageEvent?.type === "thread.token-usage.updated") {
        assert.deepEqual(usageEvent.payload, {
          usage: {
            usedTokens: 24542,
            lastUsedTokens: 24542,
            inputTokens: 23863,
            outputTokens: 679,
            maxTokens: 200000,
          },
        });
      }
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect(
    "emits completion only after turn result when assistant frames arrive before deltas",
    () => {
      const harness = makeHarness();
      return Effect.gen(function* () {
        const adapter = yield* ClaudeAdapter;

        const runtimeEventsFiber = yield* Stream.take(adapter.streamEvents, 8).pipe(
          Stream.runCollect,
          Effect.forkChild,
        );

        const session = yield* adapter.startSession({
          threadId: THREAD_ID,
          provider: "claudeAgent",
          runtimeMode: "full-access",
        });

        const turn = yield* adapter.sendTurn({
          threadId: session.threadId,
          input: "hello",
          attachments: [],
        });

        harness.query.emit({
          type: "assistant",
          session_id: "sdk-session-early-assistant",
          uuid: "assistant-early",
          parent_tool_use_id: null,
          message: {
            id: "assistant-message-early",
            content: [
              { type: "tool_use", id: "tool-early", name: "Read", input: { path: "a.ts" } },
            ],
          },
        } as unknown as SDKMessage);

        harness.query.emit({
          type: "stream_event",
          session_id: "sdk-session-early-assistant",
          uuid: "stream-early",
          parent_tool_use_id: null,
          event: {
            type: "content_block_delta",
            index: 0,
            delta: {
              type: "text_delta",
              text: "Late text",
            },
          },
        } as unknown as SDKMessage);

        harness.query.emit({
          type: "result",
          subtype: "success",
          is_error: false,
          errors: [],
          session_id: "sdk-session-early-assistant",
          uuid: "result-early",
        } as unknown as SDKMessage);

        const runtimeEvents = Array.from(yield* Fiber.join(runtimeEventsFiber));
        assert.deepEqual(
          runtimeEvents.map((event) => event.type),
          [
            "session.started",
            "session.configured",
            "session.state.changed",
            "turn.started",
            "thread.started",
            "content.delta",
            "item.completed",
            "turn.completed",
          ],
        );

        const deltaIndex = runtimeEvents.findIndex((event) => event.type === "content.delta");
        const completedIndex = runtimeEvents.findIndex((event) => event.type === "item.completed");
        assert.equal(deltaIndex >= 0 && completedIndex >= 0 && deltaIndex < completedIndex, true);

        const deltaEvent = runtimeEvents[deltaIndex];
        assert.equal(deltaEvent?.type, "content.delta");
        if (deltaEvent?.type === "content.delta") {
          assert.equal(deltaEvent.payload.delta, "Late text");
          assert.equal(String(deltaEvent.turnId), String(turn.turnId));
        }
      }).pipe(
        Effect.provideService(Random.Random, makeDeterministicRandomService()),
        Effect.provide(harness.layer),
      );
    },
  );

  it.effect("creates a fresh assistant message when Claude reuses a text block index", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const runtimeEventsFiber = yield* Stream.take(adapter.streamEvents, 9).pipe(
        Stream.runCollect,
        Effect.forkChild,
      );

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "hello",
        attachments: [],
      });

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-reused-text-index",
        uuid: "stream-reused-start-1",
        parent_tool_use_id: null,
        event: {
          type: "content_block_start",
          index: 0,
          content_block: {
            type: "text",
            text: "",
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-reused-text-index",
        uuid: "stream-reused-delta-1",
        parent_tool_use_id: null,
        event: {
          type: "content_block_delta",
          index: 0,
          delta: {
            type: "text_delta",
            text: "First",
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-reused-text-index",
        uuid: "stream-reused-stop-1",
        parent_tool_use_id: null,
        event: {
          type: "content_block_stop",
          index: 0,
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-reused-text-index",
        uuid: "stream-reused-start-2",
        parent_tool_use_id: null,
        event: {
          type: "content_block_start",
          index: 0,
          content_block: {
            type: "text",
            text: "",
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-reused-text-index",
        uuid: "stream-reused-delta-2",
        parent_tool_use_id: null,
        event: {
          type: "content_block_delta",
          index: 0,
          delta: {
            type: "text_delta",
            text: "Second",
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-reused-text-index",
        uuid: "stream-reused-stop-2",
        parent_tool_use_id: null,
        event: {
          type: "content_block_stop",
          index: 0,
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "result",
        subtype: "success",
        is_error: false,
        errors: [],
        session_id: "sdk-session-reused-text-index",
        uuid: "result-reused-text-index",
      } as unknown as SDKMessage);

      const runtimeEvents = Array.from(yield* Fiber.join(runtimeEventsFiber));
      assert.deepEqual(
        runtimeEvents.map((event) => event.type),
        [
          "session.started",
          "session.configured",
          "session.state.changed",
          "turn.started",
          "thread.started",
          "content.delta",
          "item.completed",
          "content.delta",
          "item.completed",
        ],
      );

      const assistantDeltas = runtimeEvents.filter(
        (event) => event.type === "content.delta" && event.payload.streamKind === "assistant_text",
      );
      assert.equal(assistantDeltas.length, 2);
      if (assistantDeltas.length !== 2) {
        return;
      }
      const [firstAssistantDelta, secondAssistantDelta] = assistantDeltas;
      assert.equal(firstAssistantDelta?.type, "content.delta");
      assert.equal(secondAssistantDelta?.type, "content.delta");
      if (
        firstAssistantDelta?.type !== "content.delta" ||
        secondAssistantDelta?.type !== "content.delta"
      ) {
        return;
      }
      assert.equal(firstAssistantDelta.payload.delta, "First");
      assert.equal(secondAssistantDelta.payload.delta, "Second");
      assert.notEqual(firstAssistantDelta.itemId, secondAssistantDelta.itemId);

      const assistantCompletions = runtimeEvents.filter(
        (event) =>
          event.type === "item.completed" && event.payload.itemType === "assistant_message",
      );
      assert.equal(assistantCompletions.length, 2);
      assert.equal(String(assistantCompletions[0]?.itemId), String(firstAssistantDelta.itemId));
      assert.equal(String(assistantCompletions[1]?.itemId), String(secondAssistantDelta.itemId));
      assert.notEqual(
        String(assistantCompletions[0]?.itemId),
        String(assistantCompletions[1]?.itemId),
      );
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("falls back to assistant payload text when stream deltas are absent", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const runtimeEventsFiber = yield* Stream.take(adapter.streamEvents, 8).pipe(
        Stream.runCollect,
        Effect.forkChild,
      );

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      const turn = yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "hello",
        attachments: [],
      });

      harness.query.emit({
        type: "assistant",
        session_id: "sdk-session-fallback-text",
        uuid: "assistant-fallback",
        parent_tool_use_id: null,
        message: {
          id: "assistant-message-fallback",
          content: [{ type: "text", text: "Fallback hello" }],
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "result",
        subtype: "success",
        is_error: false,
        errors: [],
        session_id: "sdk-session-fallback-text",
        uuid: "result-fallback",
      } as unknown as SDKMessage);

      const runtimeEvents = Array.from(yield* Fiber.join(runtimeEventsFiber));
      assert.deepEqual(
        runtimeEvents.map((event) => event.type),
        [
          "session.started",
          "session.configured",
          "session.state.changed",
          "turn.started",
          "thread.started",
          "content.delta",
          "item.completed",
          "turn.completed",
        ],
      );

      const deltaEvent = runtimeEvents.find((event) => event.type === "content.delta");
      assert.equal(deltaEvent?.type, "content.delta");
      if (deltaEvent?.type === "content.delta") {
        assert.equal(deltaEvent.payload.delta, "Fallback hello");
        assert.equal(String(deltaEvent.turnId), String(turn.turnId));
      }
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("segments Claude assistant text blocks around tool calls", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const runtimeEventsFiber = yield* Stream.take(adapter.streamEvents, 13).pipe(
        Stream.runCollect,
        Effect.forkChild,
      );

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "hello",
        attachments: [],
      });

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-interleaved",
        uuid: "stream-text-1-start",
        parent_tool_use_id: null,
        event: {
          type: "content_block_start",
          index: 0,
          content_block: {
            type: "text",
            text: "",
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-interleaved",
        uuid: "stream-text-1-delta",
        parent_tool_use_id: null,
        event: {
          type: "content_block_delta",
          index: 0,
          delta: {
            type: "text_delta",
            text: "First message.",
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-interleaved",
        uuid: "stream-text-1-stop",
        parent_tool_use_id: null,
        event: {
          type: "content_block_stop",
          index: 0,
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-interleaved",
        uuid: "stream-tool-start",
        parent_tool_use_id: null,
        event: {
          type: "content_block_start",
          index: 1,
          content_block: {
            type: "tool_use",
            id: "tool-interleaved-1",
            name: "Grep",
            input: {
              pattern: "assistant",
              path: "src",
            },
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-interleaved",
        uuid: "stream-tool-stop",
        parent_tool_use_id: null,
        event: {
          type: "content_block_stop",
          index: 1,
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "user",
        session_id: "sdk-session-interleaved",
        uuid: "user-tool-result-interleaved",
        parent_tool_use_id: null,
        message: {
          role: "user",
          content: [
            {
              type: "tool_result",
              tool_use_id: "tool-interleaved-1",
              content: "src/example.ts:1:assistant",
            },
          ],
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-interleaved",
        uuid: "stream-text-2-start",
        parent_tool_use_id: null,
        event: {
          type: "content_block_start",
          index: 2,
          content_block: {
            type: "text",
            text: "",
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-interleaved",
        uuid: "stream-text-2-delta",
        parent_tool_use_id: null,
        event: {
          type: "content_block_delta",
          index: 2,
          delta: {
            type: "text_delta",
            text: "Second message.",
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-interleaved",
        uuid: "stream-text-2-stop",
        parent_tool_use_id: null,
        event: {
          type: "content_block_stop",
          index: 2,
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "result",
        subtype: "success",
        is_error: false,
        errors: [],
        session_id: "sdk-session-interleaved",
        uuid: "result-interleaved",
      } as unknown as SDKMessage);

      const runtimeEvents = Array.from(yield* Fiber.join(runtimeEventsFiber));
      assert.deepEqual(
        runtimeEvents.map((event) => event.type),
        [
          "session.started",
          "session.configured",
          "session.state.changed",
          "turn.started",
          "thread.started",
          "content.delta",
          "item.completed",
          "item.started",
          "item.updated",
          "item.completed",
          "content.delta",
          "item.completed",
          "turn.completed",
        ],
      );

      const assistantTextDeltas = runtimeEvents.filter(
        (event) => event.type === "content.delta" && event.payload.streamKind === "assistant_text",
      );
      assert.equal(assistantTextDeltas.length, 2);
      if (assistantTextDeltas.length !== 2) {
        return;
      }
      const [firstAssistantDelta, secondAssistantDelta] = assistantTextDeltas;
      if (!firstAssistantDelta || !secondAssistantDelta) {
        return;
      }
      assert.notEqual(String(firstAssistantDelta.itemId), String(secondAssistantDelta.itemId));

      const firstAssistantCompletedIndex = runtimeEvents.findIndex(
        (event) =>
          event.type === "item.completed" &&
          event.payload.itemType === "assistant_message" &&
          String(event.itemId) === String(firstAssistantDelta.itemId),
      );
      const toolStartedIndex = runtimeEvents.findIndex((event) => event.type === "item.started");
      const secondAssistantDeltaIndex = runtimeEvents.findIndex(
        (event) =>
          event.type === "content.delta" &&
          event.payload.streamKind === "assistant_text" &&
          String(event.itemId) === String(secondAssistantDelta.itemId),
      );

      assert.equal(
        firstAssistantCompletedIndex >= 0 &&
          toolStartedIndex >= 0 &&
          secondAssistantDeltaIndex >= 0 &&
          firstAssistantCompletedIndex < toolStartedIndex &&
          toolStartedIndex < secondAssistantDeltaIndex,
        true,
      );
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("does not fabricate provider thread ids before first SDK session_id", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const runtimeEventsFiber = yield* Stream.take(adapter.streamEvents, 5).pipe(
        Stream.runCollect,
        Effect.forkChild,
      );

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });
      assert.equal(session.threadId, THREAD_ID);

      const turn = yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "hello",
        attachments: [],
      });
      assert.equal(turn.threadId, THREAD_ID);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-thread-real",
        uuid: "stream-thread-real",
        parent_tool_use_id: null,
        event: {
          type: "message_start",
          message: {
            id: "msg-thread-real",
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "result",
        subtype: "success",
        is_error: false,
        errors: [],
        session_id: "sdk-thread-real",
        uuid: "result-thread-real",
      } as unknown as SDKMessage);

      const runtimeEvents = Array.from(yield* Fiber.join(runtimeEventsFiber));
      assert.deepEqual(
        runtimeEvents.map((event) => event.type),
        [
          "session.started",
          "session.configured",
          "session.state.changed",
          "turn.started",
          "thread.started",
        ],
      );

      const sessionStarted = runtimeEvents[0];
      assert.equal(sessionStarted?.type, "session.started");
      if (sessionStarted?.type === "session.started") {
        assert.equal(sessionStarted.threadId, THREAD_ID);
      }

      const threadStarted = runtimeEvents[4];
      assert.equal(threadStarted?.type, "thread.started");
      if (threadStarted?.type === "thread.started") {
        assert.equal(threadStarted.threadId, THREAD_ID);
        assert.deepEqual(threadStarted.payload, {
          providerThreadId: "sdk-thread-real",
        });
      }
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("bridges approval request/response lifecycle through canUseTool", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "approval-required",
      });

      yield* Stream.take(adapter.streamEvents, 3).pipe(Stream.runDrain);

      yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "approve this",
        attachments: [],
      });
      yield* Stream.take(adapter.streamEvents, 1).pipe(Stream.runDrain);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-approval-1",
        uuid: "stream-approval-thread",
        parent_tool_use_id: null,
        event: {
          type: "message_start",
          message: {
            id: "msg-approval-thread",
          },
        },
      } as unknown as SDKMessage);

      const threadStarted = yield* Stream.runHead(adapter.streamEvents);
      assert.equal(threadStarted._tag, "Some");
      if (threadStarted._tag !== "Some" || threadStarted.value.type !== "thread.started") {
        return;
      }

      const createInput = harness.getLastCreateQueryInput();
      const canUseTool = createInput?.options.canUseTool;
      assert.equal(typeof canUseTool, "function");
      if (!canUseTool) {
        return;
      }

      const permissionPromise = canUseTool(
        "Bash",
        { command: "pwd" },
        {
          signal: new AbortController().signal,
          suggestions: [
            {
              type: "setMode",
              mode: "default",
              destination: "session",
            },
          ],
          toolUseID: "tool-use-1",
        },
      );

      const requested = yield* Stream.runHead(adapter.streamEvents);
      assert.equal(requested._tag, "Some");
      if (requested._tag !== "Some") {
        return;
      }
      assert.equal(requested.value.type, "request.opened");
      if (requested.value.type !== "request.opened") {
        return;
      }
      assert.deepEqual(requested.value.providerRefs, {
        providerItemId: ProviderItemId.makeUnsafe("tool-use-1"),
      });
      const runtimeRequestId = requested.value.requestId;
      assert.equal(typeof runtimeRequestId, "string");
      if (runtimeRequestId === undefined) {
        return;
      }

      yield* adapter.respondToRequest(
        session.threadId,
        ApprovalRequestId.makeUnsafe(runtimeRequestId),
        "accept",
      );

      const resolved = yield* Stream.runHead(adapter.streamEvents);
      assert.equal(resolved._tag, "Some");
      if (resolved._tag !== "Some") {
        return;
      }
      assert.equal(resolved.value.type, "request.resolved");
      if (resolved.value.type !== "request.resolved") {
        return;
      }
      assert.equal(resolved.value.requestId, requested.value.requestId);
      assert.equal(resolved.value.payload.decision, "accept");
      assert.deepEqual(resolved.value.providerRefs, {
        providerItemId: ProviderItemId.makeUnsafe("tool-use-1"),
      });

      const permissionResult = yield* Effect.promise(() => permissionPromise);
      assert.equal((permissionResult as PermissionResult).behavior, "allow");
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("classifies Agent tools and read-only Claude tools correctly for approvals", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "approval-required",
      });

      yield* Stream.take(adapter.streamEvents, 3).pipe(Stream.runDrain);

      const createInput = harness.getLastCreateQueryInput();
      const canUseTool = createInput?.options.canUseTool;
      assert.equal(typeof canUseTool, "function");
      if (!canUseTool) {
        return;
      }

      const agentPermissionPromise = canUseTool(
        "Agent",
        {},
        {
          signal: new AbortController().signal,
          toolUseID: "tool-agent-1",
        },
      );

      const agentRequested = yield* Stream.runHead(adapter.streamEvents);
      assert.equal(agentRequested._tag, "Some");
      if (agentRequested._tag !== "Some" || agentRequested.value.type !== "request.opened") {
        return;
      }
      assert.equal(agentRequested.value.payload.requestType, "dynamic_tool_call");

      yield* adapter.respondToRequest(
        session.threadId,
        ApprovalRequestId.makeUnsafe(String(agentRequested.value.requestId)),
        "accept",
      );
      yield* Stream.runHead(adapter.streamEvents);
      yield* Effect.promise(() => agentPermissionPromise);

      const grepPermissionPromise = canUseTool(
        "Grep",
        { pattern: "foo", path: "src" },
        {
          signal: new AbortController().signal,
          toolUseID: "tool-grep-approval-1",
        },
      );

      const grepRequested = yield* Stream.runHead(adapter.streamEvents);
      assert.equal(grepRequested._tag, "Some");
      if (grepRequested._tag !== "Some" || grepRequested.value.type !== "request.opened") {
        return;
      }
      assert.equal(grepRequested.value.payload.requestType, "file_read_approval");

      yield* adapter.respondToRequest(
        session.threadId,
        ApprovalRequestId.makeUnsafe(String(grepRequested.value.requestId)),
        "accept",
      );
      yield* Stream.runHead(adapter.streamEvents);
      yield* Effect.promise(() => grepPermissionPromise);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("passes Claude resume ids without pinning a stale assistant checkpoint", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const session = yield* adapter.startSession({
        threadId: RESUME_THREAD_ID,
        provider: "claudeAgent",
        resumeCursor: {
          threadId: "resume-thread-1",
          resume: "550e8400-e29b-41d4-a716-446655440000",
          resumeSessionAt: "assistant-99",
          turnCount: 3,
        },
        runtimeMode: "full-access",
      });

      assert.equal(session.threadId, RESUME_THREAD_ID);
      assert.deepEqual(session.resumeCursor, {
        threadId: RESUME_THREAD_ID,
        resume: "550e8400-e29b-41d4-a716-446655440000",
        resumeSessionAt: "assistant-99",
        turnCount: 3,
      });

      const createInput = harness.getLastCreateQueryInput();
      assert.equal(createInput?.options.resume, "550e8400-e29b-41d4-a716-446655440000");
      assert.equal(createInput?.options.sessionId, undefined);
      assert.equal(createInput?.options.resumeSessionAt, undefined);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("uses an app-generated Claude session id for fresh sessions", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      const createInput = harness.getLastCreateQueryInput();
      const sessionResumeCursor = session.resumeCursor as {
        threadId?: string;
        resume?: string;
        turnCount?: number;
      };
      assert.equal(sessionResumeCursor.threadId, THREAD_ID);
      assert.equal(typeof sessionResumeCursor.resume, "string");
      assert.equal(sessionResumeCursor.turnCount, 0);
      assert.match(
        sessionResumeCursor.resume ?? "",
        /^[0-9a-f]{8}-[0-9a-f]{4}-[1-8][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i,
      );
      assert.equal(createInput?.options.resume, undefined);
      assert.equal(createInput?.options.sessionId, sessionResumeCursor.resume);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect(
    "supports rollbackThread by trimming in-memory turns and preserving earlier turns",
    () => {
      const harness = makeHarness();
      return Effect.gen(function* () {
        const adapter = yield* ClaudeAdapter;

        const session = yield* adapter.startSession({
          threadId: THREAD_ID,
          provider: "claudeAgent",
          runtimeMode: "full-access",
        });

        const firstTurn = yield* adapter.sendTurn({
          threadId: session.threadId,
          input: "first",
          attachments: [],
        });

        const firstCompletedFiber = yield* Stream.filter(
          adapter.streamEvents,
          (event) => event.type === "turn.completed",
        ).pipe(Stream.runHead, Effect.forkChild);

        harness.query.emit({
          type: "result",
          subtype: "success",
          is_error: false,
          errors: [],
          session_id: "sdk-session-rollback",
          uuid: "result-first",
        } as unknown as SDKMessage);

        const firstCompleted = yield* Fiber.join(firstCompletedFiber);
        assert.equal(firstCompleted._tag, "Some");
        if (firstCompleted._tag === "Some" && firstCompleted.value.type === "turn.completed") {
          assert.equal(String(firstCompleted.value.turnId), String(firstTurn.turnId));
        }

        const secondTurn = yield* adapter.sendTurn({
          threadId: session.threadId,
          input: "second",
          attachments: [],
        });

        const secondCompletedFiber = yield* Stream.filter(
          adapter.streamEvents,
          (event) => event.type === "turn.completed",
        ).pipe(Stream.runHead, Effect.forkChild);

        harness.query.emit({
          type: "result",
          subtype: "success",
          is_error: false,
          errors: [],
          session_id: "sdk-session-rollback",
          uuid: "result-second",
        } as unknown as SDKMessage);

        const secondCompleted = yield* Fiber.join(secondCompletedFiber);
        assert.equal(secondCompleted._tag, "Some");
        if (secondCompleted._tag === "Some" && secondCompleted.value.type === "turn.completed") {
          assert.equal(String(secondCompleted.value.turnId), String(secondTurn.turnId));
        }

        const threadBeforeRollback = yield* adapter.readThread(session.threadId);
        assert.equal(threadBeforeRollback.turns.length, 2);

        const rolledBack = yield* adapter.rollbackThread(session.threadId, 1);
        assert.equal(rolledBack.turns.length, 1);
        assert.equal(rolledBack.turns[0]?.id, firstTurn.turnId);

        const threadAfterRollback = yield* adapter.readThread(session.threadId);
        assert.equal(threadAfterRollback.turns.length, 1);
        assert.equal(threadAfterRollback.turns[0]?.id, firstTurn.turnId);
      }).pipe(
        Effect.provideService(Random.Random, makeDeterministicRandomService()),
        Effect.provide(harness.layer),
      );
    },
  );

  it.effect("updates model on sendTurn when model override is provided", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });
      yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "hello",
        modelSelection: {
          provider: "claudeAgent",
          model: "claude-opus-4-6",
        },
        attachments: [],
      });

      assert.deepEqual(harness.query.setModelCalls, ["claude-opus-4-6"]);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect(
    "does not re-set the Claude model when the session already uses the same effective API model",
    () => {
      const harness = makeHarness();
      return Effect.gen(function* () {
        const adapter = yield* ClaudeAdapter;
        const modelSelection = {
          provider: "claudeAgent" as const,
          model: "claude-opus-4-6",
        };

        const session = yield* adapter.startSession({
          threadId: THREAD_ID,
          provider: "claudeAgent",
          modelSelection,
          runtimeMode: "full-access",
        });

        yield* adapter.sendTurn({
          threadId: session.threadId,
          input: "hello",
          modelSelection,
          attachments: [],
        });
        yield* adapter.sendTurn({
          threadId: session.threadId,
          input: "hello again",
          modelSelection,
          attachments: [],
        });

        assert.deepEqual(harness.query.setModelCalls, []);
      }).pipe(
        Effect.provideService(Random.Random, makeDeterministicRandomService()),
        Effect.provide(harness.layer),
      );
    },
  );

  it.effect("re-sets the Claude model when the effective API model changes", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "hello",
        modelSelection: {
          provider: "claudeAgent",
          model: "claude-opus-4-6",
          options: {
            contextWindow: "1m",
          },
        },
        attachments: [],
      });
      yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "hello again",
        modelSelection: {
          provider: "claudeAgent",
          model: "claude-opus-4-6",
        },
        attachments: [],
      });

      assert.deepEqual(harness.query.setModelCalls, ["claude-opus-4-6[1m]", "claude-opus-4-6"]);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("sets plan permission mode on sendTurn when interactionMode is plan", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });
      yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "plan this for me",
        interactionMode: "plan",
        attachments: [],
      });

      assert.deepEqual(harness.query.setPermissionModeCalls, ["plan"]);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect.each<{ runtimeMode: RuntimeMode; expectedBase: PermissionMode }>([
    { runtimeMode: "full-access", expectedBase: "bypassPermissions" },
    { runtimeMode: "approval-required", expectedBase: "default" },
    { runtimeMode: "auto-accept-edits", expectedBase: "acceptEdits" },
  ])(
    "restores $expectedBase permission mode after plan turn ($runtimeMode)",
    ({ runtimeMode, expectedBase }) => {
      const harness = makeHarness();
      return Effect.gen(function* () {
        const adapter = yield* ClaudeAdapter;

        const session = yield* adapter.startSession({
          threadId: THREAD_ID,
          provider: "claudeAgent",
          runtimeMode,
        });

        // First turn in plan mode
        yield* adapter.sendTurn({
          threadId: session.threadId,
          input: "plan this",
          interactionMode: "plan",
          attachments: [],
        });

        // Complete the turn so we can send another
        const turnCompletedFiber = yield* Stream.filter(
          adapter.streamEvents,
          (event) => event.type === "turn.completed",
        ).pipe(Stream.runHead, Effect.forkChild);

        harness.query.emit({
          type: "result",
          subtype: "success",
          is_error: false,
          errors: [],
          session_id: `sdk-session-${runtimeMode}`,
          uuid: `result-${runtimeMode}`,
        } as unknown as SDKMessage);

        yield* Fiber.join(turnCompletedFiber);

        // Second turn back to default
        yield* adapter.sendTurn({
          threadId: session.threadId,
          input: "now do it",
          interactionMode: "default",
          attachments: [],
        });

        assert.deepEqual(harness.query.setPermissionModeCalls, ["plan", expectedBase]);
      }).pipe(
        Effect.provideService(Random.Random, makeDeterministicRandomService()),
        Effect.provide(harness.layer),
      );
    },
  );

  it.effect("does not call setPermissionMode when interactionMode is absent", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });
      yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "hello",
        attachments: [],
      });

      assert.deepEqual(harness.query.setPermissionModeCalls, []);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("captures ExitPlanMode as a proposed plan and denies auto-exit", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      yield* Stream.take(adapter.streamEvents, 3).pipe(Stream.runDrain);

      yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "plan this",
        interactionMode: "plan",
        attachments: [],
      });
      yield* Stream.take(adapter.streamEvents, 1).pipe(Stream.runDrain);

      const createInput = harness.getLastCreateQueryInput();
      const canUseTool = createInput?.options.canUseTool;
      assert.equal(typeof canUseTool, "function");
      if (!canUseTool) {
        return;
      }

      const permissionPromise = canUseTool(
        "ExitPlanMode",
        {
          plan: "# Ship it\n\n- one\n- two",
          allowedPrompts: [{ tool: "Bash", prompt: "run tests" }],
        },
        {
          signal: new AbortController().signal,
          toolUseID: "tool-exit-1",
        },
      );

      const proposedEvent = yield* Stream.runHead(adapter.streamEvents);
      assert.equal(proposedEvent._tag, "Some");
      if (proposedEvent._tag !== "Some") {
        return;
      }
      assert.equal(proposedEvent.value.type, "turn.proposed.completed");
      if (proposedEvent.value.type !== "turn.proposed.completed") {
        return;
      }
      assert.equal(proposedEvent.value.payload.planMarkdown, "# Ship it\n\n- one\n- two");
      assert.deepEqual(proposedEvent.value.providerRefs, {
        providerItemId: ProviderItemId.makeUnsafe("tool-exit-1"),
      });

      const permissionResult = yield* Effect.promise(() => permissionPromise);
      assert.equal((permissionResult as PermissionResult).behavior, "deny");
      const deniedResult = permissionResult as PermissionResult & {
        message?: string;
      };
      assert.equal(deniedResult.message?.includes("captured your proposed plan"), true);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("extracts proposed plans from assistant ExitPlanMode snapshots", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      yield* Stream.take(adapter.streamEvents, 3).pipe(Stream.runDrain);

      yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "plan this",
        interactionMode: "plan",
        attachments: [],
      });
      yield* Stream.take(adapter.streamEvents, 1).pipe(Stream.runDrain);

      const proposedEventFiber = yield* Stream.filter(
        adapter.streamEvents,
        (event) => event.type === "turn.proposed.completed",
      ).pipe(Stream.runHead, Effect.forkChild);

      harness.query.emit({
        type: "assistant",
        session_id: "sdk-session-exit-plan",
        uuid: "assistant-exit-plan",
        parent_tool_use_id: null,
        message: {
          model: "claude-opus-4-6",
          id: "msg-exit-plan",
          type: "message",
          role: "assistant",
          content: [
            {
              type: "tool_use",
              id: "tool-exit-2",
              name: "ExitPlanMode",
              input: {
                plan: "# Final plan\n\n- capture it",
              },
            },
          ],
          stop_reason: null,
          stop_sequence: null,
          usage: {},
        },
      } as unknown as SDKMessage);

      const proposedEvent = yield* Fiber.join(proposedEventFiber);
      assert.equal(proposedEvent._tag, "Some");
      if (proposedEvent._tag !== "Some") {
        return;
      }
      assert.equal(proposedEvent.value.type, "turn.proposed.completed");
      if (proposedEvent.value.type !== "turn.proposed.completed") {
        return;
      }
      assert.equal(proposedEvent.value.payload.planMarkdown, "# Final plan\n\n- capture it");
      assert.deepEqual(proposedEvent.value.providerRefs, {
        providerItemId: ProviderItemId.makeUnsafe("tool-exit-2"),
      });
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("handles AskUserQuestion via user-input.requested/resolved lifecycle", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      // Start session in approval-required mode so canUseTool fires.
      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "approval-required",
      });

      // Drain the session startup events (started, configured, state.changed).
      yield* Stream.take(adapter.streamEvents, 3).pipe(Stream.runDrain);

      yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "question turn",
        attachments: [],
      });
      yield* Stream.take(adapter.streamEvents, 1).pipe(Stream.runDrain);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-user-input-1",
        uuid: "stream-user-input-thread",
        parent_tool_use_id: null,
        event: {
          type: "message_start",
          message: {
            id: "msg-user-input-thread",
          },
        },
      } as unknown as SDKMessage);

      const threadStarted = yield* Stream.runHead(adapter.streamEvents);
      assert.equal(threadStarted._tag, "Some");
      if (threadStarted._tag !== "Some" || threadStarted.value.type !== "thread.started") {
        return;
      }

      const createInput = harness.getLastCreateQueryInput();
      const canUseTool = createInput?.options.canUseTool;
      assert.equal(typeof canUseTool, "function");
      if (!canUseTool) {
        return;
      }

      // Simulate Claude calling AskUserQuestion with structured questions.
      const askInput = {
        questions: [
          {
            question: "Which framework?",
            header: "Framework",
            options: [
              { label: "React", description: "React.js" },
              { label: "Vue", description: "Vue.js" },
            ],
            multiSelect: false,
          },
        ],
      };

      const permissionPromise = canUseTool("AskUserQuestion", askInput, {
        signal: new AbortController().signal,
        toolUseID: "tool-ask-1",
      });

      // The adapter should emit a user-input.requested event.
      const requestedEvent = yield* Stream.runHead(adapter.streamEvents);
      assert.equal(requestedEvent._tag, "Some");
      if (requestedEvent._tag !== "Some") {
        return;
      }
      assert.equal(requestedEvent.value.type, "user-input.requested");
      if (requestedEvent.value.type !== "user-input.requested") {
        return;
      }
      const requestId = requestedEvent.value.requestId;
      assert.equal(typeof requestId, "string");
      assert.equal(requestedEvent.value.payload.questions.length, 1);
      assert.equal(requestedEvent.value.payload.questions[0]?.question, "Which framework?");
      assert.deepEqual(requestedEvent.value.providerRefs, {
        providerItemId: ProviderItemId.makeUnsafe("tool-ask-1"),
      });

      // Respond with the user's answers.
      yield* adapter.respondToUserInput(
        session.threadId,
        ApprovalRequestId.makeUnsafe(requestId!),
        { "Which framework?": "React" },
      );

      // The adapter should emit a user-input.resolved event.
      const resolvedEvent = yield* Stream.runHead(adapter.streamEvents);
      assert.equal(resolvedEvent._tag, "Some");
      if (resolvedEvent._tag !== "Some") {
        return;
      }
      assert.equal(resolvedEvent.value.type, "user-input.resolved");
      if (resolvedEvent.value.type !== "user-input.resolved") {
        return;
      }
      assert.deepEqual(resolvedEvent.value.payload.answers, {
        "Which framework?": "React",
      });
      assert.deepEqual(resolvedEvent.value.providerRefs, {
        providerItemId: ProviderItemId.makeUnsafe("tool-ask-1"),
      });

      // The canUseTool promise should resolve with the answers in SDK format.
      const permissionResult = yield* Effect.promise(() => permissionPromise);
      assert.equal((permissionResult as PermissionResult).behavior, "allow");
      const updatedInput = (permissionResult as { updatedInput: Record<string, unknown> })
        .updatedInput;
      assert.deepEqual(updatedInput.answers, { "Which framework?": "React" });
      // Original questions should be passed through.
      assert.deepEqual(updatedInput.questions, askInput.questions);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("routes AskUserQuestion through user-input flow even in full-access mode", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      // In full-access mode, regular tools are auto-approved.
      // AskUserQuestion should still go through the user-input flow.
      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });

      yield* Stream.take(adapter.streamEvents, 3).pipe(Stream.runDrain);

      const createInput = harness.getLastCreateQueryInput();
      const canUseTool = createInput?.options.canUseTool;
      assert.equal(typeof canUseTool, "function");
      if (!canUseTool) {
        return;
      }

      const askInput = {
        questions: [
          {
            question: "Deploy to which env?",
            header: "Env",
            options: [
              { label: "Staging", description: "Staging environment" },
              { label: "Production", description: "Production environment" },
            ],
            multiSelect: false,
          },
        ],
      };

      const permissionPromise = canUseTool("AskUserQuestion", askInput, {
        signal: new AbortController().signal,
        toolUseID: "tool-ask-2",
      });

      // Should still get user-input.requested even in full-access mode.
      const requestedEvent = yield* Stream.runHead(adapter.streamEvents);
      assert.equal(requestedEvent._tag, "Some");
      if (requestedEvent._tag !== "Some" || requestedEvent.value.type !== "user-input.requested") {
        assert.fail("Expected user-input.requested event");
        return;
      }
      const requestId = requestedEvent.value.requestId;

      yield* adapter.respondToUserInput(
        session.threadId,
        ApprovalRequestId.makeUnsafe(requestId!),
        { "Deploy to which env?": "Staging" },
      );

      // Drain the resolved event.
      yield* Stream.runHead(adapter.streamEvents);

      const permissionResult = yield* Effect.promise(() => permissionPromise);
      assert.equal((permissionResult as PermissionResult).behavior, "allow");
      const updatedInput = (permissionResult as { updatedInput: Record<string, unknown> })
        .updatedInput;
      assert.deepEqual(updatedInput.answers, { "Deploy to which env?": "Staging" });
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("denies AskUserQuestion when the waiting turn is aborted", () => {
    const harness = makeHarness();
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "approval-required",
      });

      yield* Stream.take(adapter.streamEvents, 3).pipe(Stream.runDrain);

      const createInput = harness.getLastCreateQueryInput();
      const canUseTool = createInput?.options.canUseTool;
      assert.equal(typeof canUseTool, "function");
      if (!canUseTool) {
        return;
      }

      const controller = new AbortController();
      const permissionPromise = canUseTool(
        "AskUserQuestion",
        {
          questions: [
            {
              question: "Continue?",
              header: "Continue",
              options: [{ label: "Yes", description: "Proceed" }],
              multiSelect: false,
            },
          ],
        },
        {
          signal: controller.signal,
          toolUseID: "tool-ask-abort",
        },
      );

      const requestedEvent = yield* Stream.runHead(adapter.streamEvents);
      assert.equal(requestedEvent._tag, "Some");
      if (requestedEvent._tag !== "Some" || requestedEvent.value.type !== "user-input.requested") {
        assert.fail("Expected user-input.requested event");
        return;
      }
      assert.equal(requestedEvent.value.threadId, session.threadId);

      controller.abort();

      const resolvedEvent = yield* Stream.runHead(adapter.streamEvents);
      assert.equal(resolvedEvent._tag, "Some");
      if (resolvedEvent._tag !== "Some" || resolvedEvent.value.type !== "user-input.resolved") {
        assert.fail("Expected user-input.resolved event");
        return;
      }
      assert.deepEqual(resolvedEvent.value.payload.answers, {});

      const permissionResult = yield* Effect.promise(() => permissionPromise);
      assert.deepEqual(permissionResult, {
        behavior: "deny",
        message: "User cancelled tool execution.",
      } satisfies PermissionResult);
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });

  it.effect("writes provider-native observability records when enabled", () => {
    const nativeEvents: Array<{
      event?: {
        provider?: string;
        method?: string;
        threadId?: string;
        turnId?: string;
      };
    }> = [];
    const nativeThreadIds: Array<string | null> = [];
    const harness = makeHarness({
      nativeEventLogger: {
        filePath: "memory://claude-native-events",
        write: (event, threadId) => {
          nativeEvents.push(event as (typeof nativeEvents)[number]);
          nativeThreadIds.push(threadId ?? null);
          return Effect.void;
        },
        close: () => Effect.void,
      },
    });
    return Effect.gen(function* () {
      const adapter = yield* ClaudeAdapter;

      const session = yield* adapter.startSession({
        threadId: THREAD_ID,
        provider: "claudeAgent",
        runtimeMode: "full-access",
      });
      const turn = yield* adapter.sendTurn({
        threadId: session.threadId,
        input: "hello",
        attachments: [],
      });

      const turnCompletedFiber = yield* Stream.filter(
        adapter.streamEvents,
        (event) => event.type === "turn.completed",
      ).pipe(Stream.runHead, Effect.forkChild);

      harness.query.emit({
        type: "stream_event",
        session_id: "sdk-session-native-log",
        uuid: "stream-native-log",
        parent_tool_use_id: null,
        event: {
          type: "content_block_delta",
          index: 0,
          delta: {
            type: "text_delta",
            text: "hi",
          },
        },
      } as unknown as SDKMessage);

      harness.query.emit({
        type: "result",
        subtype: "success",
        is_error: false,
        errors: [],
        session_id: "sdk-session-native-log",
        uuid: "result-native-log",
      } as unknown as SDKMessage);

      const turnCompleted = yield* Fiber.join(turnCompletedFiber);
      assert.equal(turnCompleted._tag, "Some");

      assert.equal(nativeEvents.length > 0, true);
      assert.equal(
        nativeEvents.some((record) => record.event?.provider === "claudeAgent"),
        true,
      );
      assert.equal(
        nativeEvents.some(
          (record) =>
            String(
              (record.event as { readonly providerThreadId?: string } | undefined)
                ?.providerThreadId,
            ) === "sdk-session-native-log",
        ),
        true,
      );
      assert.equal(
        nativeEvents.some((record) => String(record.event?.turnId) === String(turn.turnId)),
        true,
      );
      assert.equal(
        nativeEvents.some(
          (record) => record.event?.method === "claude/stream_event/content_block_delta/text_delta",
        ),
        true,
      );
      assert.equal(
        nativeThreadIds.every((threadId) => threadId === String(THREAD_ID)),
        true,
      );
    }).pipe(
      Effect.provideService(Random.Random, makeDeterministicRandomService()),
      Effect.provide(harness.layer),
    );
  });
});