import { Schema } from "effect";
import { describe, expect, it } from "vitest";

import {
  AppSettingsSchema,
  DEFAULT_TIMESTAMP_FORMAT,
  getAppModelOptions,
  normalizeCustomModelSlugs,
  resolveAppModelSelection,
} from "./appSettings";

describe("normalizeCustomModelSlugs", () => {
  it("normalizes aliases, removes built-ins, and deduplicates values", () => {
    expect(
      normalizeCustomModelSlugs([
        " custom/internal-model ",
        "gpt-5.3-codex",
        "5.3",
        "custom/internal-model",
        "",
        null,
      ]),
    ).toEqual(["custom/internal-model"]);
  });

  it("normalizes provider-specific aliases for claude", () => {
    expect(normalizeCustomModelSlugs(["sonnet"], "claudeAgent")).toEqual([]);
    expect(normalizeCustomModelSlugs(["claude/custom-sonnet"], "claudeAgent")).toEqual([
      "claude/custom-sonnet",
    ]);
  });
});

describe("getAppModelOptions", () => {
  it("appends saved custom models after the built-in options", () => {
    const options = getAppModelOptions("codex", ["custom/internal-model"]);

    expect(options.map((option) => option.slug)).toEqual([
      "gpt-5.4",
      "gpt-5.4-mini",
      "gpt-5.3-codex",
      "gpt-5.3-codex-spark",
      "gpt-5.2-codex",
      "gpt-5.2",
      "custom/internal-model",
    ]);
  });

  it("keeps the currently selected custom model available even if it is no longer saved", () => {
    const options = getAppModelOptions("codex", [], "custom/selected-model");

    expect(options.at(-1)).toEqual({
      slug: "custom/selected-model",
      name: "custom/selected-model",
      isCustom: true,
    });
  });
  it("keeps a saved custom provider model available as an exact slug option", () => {
    const options = getAppModelOptions("claudeAgent", ["claude/custom-opus"], "claude/custom-opus");

    expect(options.some((option) => option.slug === "claude/custom-opus" && option.isCustom)).toBe(
      true,
    );
  });
});

describe("resolveAppModelSelection", () => {
  it("preserves saved custom model slugs instead of falling back to the default", () => {
    expect(resolveAppModelSelection("codex", ["galapagos-alpha"], "galapagos-alpha")).toBe(
      "galapagos-alpha",
    );
  });

  it("falls back to the provider default when no model is selected", () => {
    expect(resolveAppModelSelection("codex", [], "")).toBe("gpt-5.4");
  });
});

describe("timestamp format defaults", () => {
  it("defaults timestamp format to locale", () => {
    expect(DEFAULT_TIMESTAMP_FORMAT).toBe("locale");
  });
});

describe("provider-specific custom models", () => {
  it("includes provider-specific custom slugs in non-codex model lists", () => {
    const claudeOptions = getAppModelOptions("claudeAgent", ["claude/custom-opus"]);

    expect(claudeOptions.some((option) => option.slug === "claude/custom-opus")).toBe(true);
  });
});

describe("AppSettingsSchema", () => {
  it("fills decoding defaults for persisted settings that predate newer keys", () => {
    const decode = Schema.decodeSync(Schema.fromJsonString(AppSettingsSchema));

    expect(
      decode(
        JSON.stringify({
          codexBinaryPath: "/usr/local/bin/codex",
          confirmThreadDelete: false,
        }),
      ),
    ).toMatchObject({
      codexBinaryPath: "/usr/local/bin/codex",
      codexHomePath: "",
      defaultThreadEnvMode: "local",
      confirmThreadDelete: false,
      enableAssistantStreaming: false,
      timestampFormat: DEFAULT_TIMESTAMP_FORMAT,
      customCodexModels: [],
      customClaudeModels: [],
    });
  });
});