import { describe, it, expect, beforeEach, afterEach } from "bun:test";
import { mkdir, writeFile } from "node:fs/promises";
import { join } from "node:path";
import { createRunner } from "./agent-mock.ts";
import {
  setupTempDir,
  cleanupTempDir,
  getTempDir,
  createFreshProject,
  writeDoc,
  changeFileExists,
} from "./fixtures.ts";
import { scanChanges, scanArchives } from "../../src/core/scanner.ts";
import { getChangeDir } from "../../src/core/config.ts";

describe("e2e: archive 阶段", () => {
  let runner: ReturnType<typeof createRunner>;

  beforeEach(async () => {
    await setupTempDir();
    runner = createRunner();
  });

  afterEach(async () => {
    await cleanupTempDir();
  });

  it("全部任务完成时变更移至 archive/", async () => {
    const config = await createFreshProject();
    await writeDoc("ready", "task", "- [x] 任务\n");

    await runner.runArchive(getTempDir(), "ready", config);

    expect(changeFileExists("ready", "task.md")).toBe(false);

    const archives = await scanArchives(getTempDir());
    expect(archives.length).toBeGreaterThanOrEqual(1);

    const changes = await scanChanges(getTempDir(), config);
    expect(changes.find((c) => c.name === "ready")).toBeUndefined();
  });

  it("任务未完成时阻止归档", async () => {
    const config = await createFreshProject();
    await writeDoc("pending", "task", "- [ ] 未完成\n");

    await expect(runner.runArchive(getTempDir(), "pending", config)).rejects.toThrow("未完成任务");

    expect(changeFileExists("pending", "task.md")).toBe(true);
  });

  it("无 task.md 时允许归档", async () => {
    const config = await createFreshProject();
    const changeDir = getChangeDir(getTempDir(), "no-task");
    await mkdir(changeDir, { recursive: true });
    await writeFile(join(changeDir, "design.md"), "# 设计\n");

    await runner.runArchive(getTempDir(), "no-task", config);

    expect(changeFileExists("no-task", "design.md")).toBe(false);

    const archives = await scanArchives(getTempDir());
    expect(archives.length).toBeGreaterThanOrEqual(1);
  });
});