import { assert, it } from "@effect/vitest";import {  ProviderDriverKind,  ProviderInstanceId,  ProviderSessionId,  ThreadId,  type OrchestrationV2ThreadProjection,} from "@t3tools/contracts";import * as DateTime from "effect/DateTime";import * as Effect from "effect/Effect";import * as Layer from "effect/Layer"; import { CodexProviderCapabilitiesV2 } from "./Adapters/CodexAdapterV2.ts";import type { ProviderAdapterV2Shape } from "./ProviderAdapter.ts";import * as ProviderAdapterRegistry from "./ProviderAdapterRegistry.ts";import * as ProviderSwitch from "./ProviderSwitchService.ts"; const driver = ProviderDriverKind.make("codex");const currentInstanceId = ProviderInstanceId.make("codex_primary");const currentSessionId = ProviderSessionId.make("session_primary");const now = DateTime.makeUnsafe("2026-06-20T00:00:00.000Z");const capabilitiesWithoutModelSwitch = {  ...CodexProviderCapabilitiesV2,  sessions: {    ...CodexProviderCapabilitiesV2.sessions,    supportsModelSwitchInSession: false,  },}; function projection(): OrchestrationV2ThreadProjection {  return {    thread: {      id: ThreadId.make("thread_switch_service"),      modelSelection: { instanceId: currentInstanceId, model: "gpt-5.1-codex" },      runtimeMode: "full-access",      interactionMode: "default",      worktreePath: "/repo",    },    providerSessions: [      {        id: currentSessionId,        providerInstanceId: currentInstanceId,        status: "ready",        cwd: "/repo",        capabilities: capabilitiesWithoutModelSwitch,        updatedAt: now,      },    ],    providerThreads: [],  } as unknown as OrchestrationV2ThreadProjection;} function testLayer(metadata: Readonly<Record<string, { continuationKey: string }>>) {  const adapter = (instanceId: ProviderInstanceId): ProviderAdapterV2Shape => ({    instanceId,    driver,    getCapabilities: () => Effect.succeed(capabilitiesWithoutModelSwitch),    planSelectionTransition: () => Effect.succeed({ type: "restart_session" }),    openSession: () => Effect.die("ProviderSwitchService tests do not open sessions."),  });  const registry = Layer.mock(ProviderAdapterRegistry.ProviderAdapterRegistryV2)({    get: (instanceId) =>      metadata[instanceId] === undefined        ? Effect.fail(            new ProviderAdapterRegistry.ProviderAdapterRegistryLookupError({ instanceId }),          )        : Effect.succeed(adapter(instanceId)),    list: () => Effect.succeed(Object.keys(metadata).map((id) => ProviderInstanceId.make(id))),    getMetadata: (instanceId) => {      const value = metadata[instanceId];      return value === undefined        ? Effect.fail(            new ProviderAdapterRegistry.ProviderAdapterRegistryLookupError({ instanceId }),          )        : Effect.succeed({            driver,            continuationKey: value.continuationKey,            enabled: true,            capabilities: capabilitiesWithoutModelSwitch,          });    },  });  return ProviderSwitch.layer.pipe(Layer.provide(registry));} it.effect(  "restarts and releases the current session for unsupported in-session model changes",  () =>    Effect.gen(function* () {      const service = yield* ProviderSwitch.ProviderSwitchServiceV2;      const result = yield* service.plan({        projection: projection(),        targetModelSelection: { instanceId: currentInstanceId, model: "gpt-5.2-codex" },      });      assert.equal(result.transition.type, "restart_and_resume");      assert.deepEqual(result.releaseProviderSessionIds, [currentSessionId]);    }).pipe(      Effect.provide(        testLayer({ [currentInstanceId]: { continuationKey: "codex:account:primary" } }),      ),    ),); it.effect("distinguishes compatible and incompatible instances of the same driver", () =>  Effect.gen(function* () {    const service = yield* ProviderSwitch.ProviderSwitchServiceV2;    const compatibleId = ProviderInstanceId.make("codex_compatible");    const incompatibleId = ProviderInstanceId.make("codex_incompatible");    const compatible = yield* service.plan({      projection: projection(),      targetModelSelection: { instanceId: compatibleId, model: "gpt-5.1-codex" },    });    const incompatible = yield* service.plan({      projection: projection(),      targetModelSelection: { instanceId: incompatibleId, model: "gpt-5.1-codex" },    });    assert.equal(compatible.transition.type, "restart_and_resume");    assert.equal(incompatible.transition.type, "create_with_handoff");  }).pipe(    Effect.provide(      testLayer({        [currentInstanceId]: { continuationKey: "codex:account:primary" },        codex_compatible: { continuationKey: "codex:account:primary" },        codex_incompatible: { continuationKey: "codex:account:other" },      }),    ),  ),);