import { describe, it, expect, beforeEach, afterEach } from "bun:test";
import { existsSync } from "node:fs";
import { mkdir, rm, readFile, readdir, writeFile } from "node:fs/promises";
import { join } from "node:path";
import { injectOpenCode, updateOpenCode } from "../../src/adapters/opencode.ts";

const TMP_DIR = join(import.meta.dir, "__tmp_opencode_test__");

beforeEach(async () => {
  await mkdir(TMP_DIR, { recursive: true });
});

afterEach(async () => {
  await rm(TMP_DIR, { recursive: true, force: true });
});

describe("injectOpenCode", () => {
  it("生成 discuss、create、plan、build、archive 的 command 和 skill 文件", async () => {
    await injectOpenCode(TMP_DIR);

    const commands = await readdir(join(TMP_DIR, ".opencode", "commands"));
    const skills = await readdir(join(TMP_DIR, ".opencode", "skills"));

    for (const stage of ["discuss", "create", "plan", "build", "archive"]) {
      expect(commands).toContain(`rune-${stage}.md`);
      expect(skills).toContain(`rune-${stage}`);
      expect(existsSync(join(TMP_DIR, ".opencode", "skills", `rune-${stage}`, "SKILL.md"))).toBe(
        true,
      );
    }
  });

  it("不生成 rune-status command 和 skill", async () => {
    await injectOpenCode(TMP_DIR);

    const commands = await readdir(join(TMP_DIR, ".opencode", "commands"));
    const skills = await readdir(join(TMP_DIR, ".opencode", "skills"));

    expect(commands).not.toContain("rune-status.md");
    expect(skills).not.toContain("rune-status");
  });

  it("生成 rune-intro skill（无对应 command）", async () => {
    await injectOpenCode(TMP_DIR);

    const commands = await readdir(join(TMP_DIR, ".opencode", "commands"));
    const skills = await readdir(join(TMP_DIR, ".opencode", "skills"));

    expect(commands).not.toContain("rune-intro.md");
    expect(skills).toContain("rune-intro");
    expect(existsSync(join(TMP_DIR, ".opencode", "skills", "rune-intro", "SKILL.md"))).toBe(true);
  });

  it("command 文件统一格式：只包含 skill 调用指令", async () => {
    await injectOpenCode(TMP_DIR);

    for (const stage of ["discuss", "create", "plan", "build", "archive"]) {
      const content = await readFile(
        join(TMP_DIR, ".opencode", "commands", `rune-${stage}.md`),
        "utf-8",
      );
      expect(content).toContain(`rune-${stage} skill`);
      expect(content).not.toContain("变更名");
    }
  });

  it("create/plan/build/archive skill 包含变更名智能识别引导", async () => {
    await injectOpenCode(TMP_DIR);

    for (const stage of ["create", "plan", "build", "archive"]) {
      const content = await readFile(
        join(TMP_DIR, ".opencode", "skills", `rune-${stage}`, "SKILL.md"),
        "utf-8",
      );
      expect(content).toContain("智能识别");
      expect(content).toContain("rune status");
    }
  });

  it("discuss skill 不包含智能识别引导", async () => {
    await injectOpenCode(TMP_DIR);
    const content = await readFile(
      join(TMP_DIR, ".opencode", "skills", "rune-discuss", "SKILL.md"),
      "utf-8",
    );
    expect(content).not.toContain("智能识别");
  });

  it("plan skill 包含运行 status 的引导", async () => {
    await injectOpenCode(TMP_DIR);
    const content = await readFile(
      join(TMP_DIR, ".opencode", "skills", "rune-plan", "SKILL.md"),
      "utf-8",
    );
    expect(content).toContain("rune status");
  });

  it("discuss skill 不包含 status 引导", async () => {
    await injectOpenCode(TMP_DIR);
    const content = await readFile(
      join(TMP_DIR, ".opencode", "skills", "rune-discuss", "SKILL.md"),
      "utf-8",
    );
    expect(content).not.toContain("规划阶段应先运行");
  });

  it("重复注入时不覆盖已存在的文件", async () => {
    await injectOpenCode(TMP_DIR);
    const originalContent = await readFile(
      join(TMP_DIR, ".opencode", "commands", "rune-discuss.md"),
      "utf-8",
    );

    await injectOpenCode(TMP_DIR);
    const content = await readFile(
      join(TMP_DIR, ".opencode", "commands", "rune-discuss.md"),
      "utf-8",
    );
    expect(content).toBe(originalContent);
  });
});

describe("updateOpenCode", () => {
  it("文件不存在时创建", async () => {
    await updateOpenCode(TMP_DIR);
    expect(existsSync(join(TMP_DIR, ".opencode", "commands", "rune-discuss.md"))).toBe(true);
    expect(existsSync(join(TMP_DIR, ".opencode", "skills", "rune-discuss", "SKILL.md"))).toBe(true);
  });

  it("文件存在且内容一致时不覆盖", async () => {
    await injectOpenCode(TMP_DIR);
    const originalContent = await readFile(
      join(TMP_DIR, ".opencode", "commands", "rune-discuss.md"),
      "utf-8",
    );

    await updateOpenCode(TMP_DIR);
    const content = await readFile(
      join(TMP_DIR, ".opencode", "commands", "rune-discuss.md"),
      "utf-8",
    );
    expect(content).toBe(originalContent);
  });

  it("文件存在但内容不一致时覆盖", async () => {
    await injectOpenCode(TMP_DIR);
    await writeFile(join(TMP_DIR, ".opencode", "commands", "rune-discuss.md"), "旧内容");

    await updateOpenCode(TMP_DIR);
    const content = await readFile(
      join(TMP_DIR, ".opencode", "commands", "rune-discuss.md"),
      "utf-8",
    );
    expect(content).not.toBe("旧内容");
    expect(content).toContain("rune-discuss");
  });

  it("更新时生成 rune-intro skill", async () => {
    await updateOpenCode(TMP_DIR);
    expect(existsSync(join(TMP_DIR, ".opencode", "skills", "rune-intro", "SKILL.md"))).toBe(true);
  });

  it("不生成 rune-status", async () => {
    await updateOpenCode(TMP_DIR);
    expect(existsSync(join(TMP_DIR, ".opencode", "commands", "rune-status.md"))).toBe(false);
    expect(existsSync(join(TMP_DIR, ".opencode", "skills", "rune-status", "SKILL.md"))).toBe(false);
  });
});

describe("injectOpenCode with command prefix", () => {
  it("使用自定义前缀生成 skill 文件", async () => {
    const tmpDir = join(import.meta.dir, "__tmp_opencode_prefix_test__");
    await mkdir(tmpDir, { recursive: true });
    try {
      await injectOpenCode(tmpDir, "bunx @lanyuanxiaoyao/rune");
      const content = await readFile(
        join(tmpDir, ".opencode", "skills", "rune-discuss", "SKILL.md"),
        "utf-8",
      );
      expect(content).toContain("bunx @lanyuanxiaoyao/rune discuss");
    } finally {
      await rm(tmpDir, { recursive: true, force: true });
    }
  });

  it("不传前缀时使用默认 rune 前缀", async () => {
    const tmpDir = join(import.meta.dir, "__tmp_opencode_default_test__");
    await mkdir(tmpDir, { recursive: true });
    try {
      await injectOpenCode(tmpDir);
      const content = await readFile(
        join(tmpDir, ".opencode", "skills", "rune-discuss", "SKILL.md"),
        "utf-8",
      );
      expect(content).toContain("rune discuss");
    } finally {
      await rm(tmpDir, { recursive: true, force: true });
    }
  });

  it("create skill 使用自定义前缀", async () => {
    const tmpDir = join(import.meta.dir, "__tmp_opencode_create_test__");
    await mkdir(tmpDir, { recursive: true });
    try {
      await injectOpenCode(tmpDir, "pnpx @lanyuanxiaoyao/rune");
      const content = await readFile(
        join(tmpDir, ".opencode", "skills", "rune-create", "SKILL.md"),
        "utf-8",
      );
      expect(content).toContain("pnpx @lanyuanxiaoyao/rune create");
    } finally {
      await rm(tmpDir, { recursive: true, force: true });
    }
  });

  it("rune-intro skill 使用自定义前缀", async () => {
    const tmpDir = join(import.meta.dir, "__tmp_opencode_intro_test__");
    await mkdir(tmpDir, { recursive: true });
    try {
      await injectOpenCode(tmpDir, "bunx @lanyuanxiaoyao/rune");
      const content = await readFile(
        join(tmpDir, ".opencode", "skills", "rune-intro", "SKILL.md"),
        "utf-8",
      );
      expect(content).toContain("bunx @lanyuanxiaoyao/rune status");
    } finally {
      await rm(tmpDir, { recursive: true, force: true });
    }
  });
});