/**
 * 直接 import lib 的兩支測試之一（另一支是 worktree-path），其餘一律走子行程的 CLI 邊界。
 *
 * 理由：冪等查重與 git 執行點是 lib 對「其他腳本」公開的契約，而 issue-create 與
 * branch-prep 落地之後，它們的 CLI 測試才是這兩件事的主場——這一支已經是備位的，
 * 留著是因為直接測 export 仍比讓契約完全沒有測試好。
 */
import test from 'node:test';
import assert from 'node:assert/strict';
import { findIssueByTitle, runGit, pluginRoot, templatesDir, referencesDir } from '../scripts/lib.js';
import { startStubGitea } from './helpers/stub-gitea.js';
import { makeTempRepo } from './helpers/temp-repo.js';
import { existsSync } from 'node:fs';
import { join } from 'node:path';

const REPO = 'plugins/tea-sdlc';

// ── 冪等查重 ───────────────────────────────────────────────────────

test('查重：標題完全相同的既有議題會被找到', async (t) => {
  const stub = await startStubGitea({
    [`GET /api/v1/repos/${REPO}/issues`]: {
      status: 200,
      body: [
        { number: 7, title: '建立工作包的抽取契約' },
        { number: 8, title: '產生圖解版總覽網頁並寫回議題' },
      ],
    },
  });
  t.after(() => stub.close());

  const found = await findIssueByTitle(
    { base: stub.base, token: 'stub-token' },
    REPO,
    '產生圖解版總覽網頁並寫回議題',
  );

  assert.equal(found.number, 8);
});

test('查重：沒有同名議題時回 null，讓呼叫端自行決定要不要建立', async (t) => {
  const stub = await startStubGitea({
    [`GET /api/v1/repos/${REPO}/issues`]: { status: 200, body: [{ number: 7, title: '別的議題' }] },
  });
  t.after(() => stub.close());

  const found = await findIssueByTitle({ base: stub.base, token: 'x' }, REPO, '找不到的標題');

  assert.equal(found, null);
});

test('查重：同時看 open 與 closed，避免把已關閉的議題再建一次', async (t) => {
  const stub = await startStubGitea({
    [`GET /api/v1/repos/${REPO}/issues`]: { status: 200, body: [] },
  });
  t.after(() => stub.close());

  await findIssueByTitle({ base: stub.base, token: 'x' }, REPO, '任何標題');

  assert.equal(stub.requests[0].query.state, 'all');
});

test('查重：標題只差前後空白仍視為同一顆', async (t) => {
  const stub = await startStubGitea({
    [`GET /api/v1/repos/${REPO}/issues`]: {
      status: 200,
      body: [{ number: 12, title: '  走通腳本契約  ' }],
    },
  });
  t.after(() => stub.close());

  const found = await findIssueByTitle({ base: stub.base, token: 'x' }, REPO, '走通腳本契約');

  assert.equal(found.number, 12);
});

// ── git 執行點 ─────────────────────────────────────────────────────

test('git 執行點：在臨時 repo 上跑真實 git，取得目前分支', (t) => {
  const repo = makeTempRepo();
  t.after(() => repo.cleanup());

  const branch = runGit(['rev-parse', '--abbrev-ref', 'HEAD'], { cwd: repo.dir });

  assert.equal(branch, 'master');
});

test('git 執行點：輸出前後空白被修掉，呼叫端不必自己 trim', (t) => {
  const repo = makeTempRepo();
  t.after(() => repo.cleanup());

  const log = runGit(['log', '--oneline'], { cwd: repo.dir });

  assert.equal(log.endsWith('\n'), false);
  assert.match(log, /initial$/);
});

test('git 執行點：git 失敗時拋出帶有 stderr 的錯誤，不回傳空字串', (t) => {
  const repo = makeTempRepo();
  t.after(() => repo.cleanup());

  assert.throws(() => runGit(['rev-parse', 'no-such-ref'], { cwd: repo.dir }), /no-such-ref/);
});

// ── 路徑定位 ───────────────────────────────────────────────────────

test('plugin 根由自身檔案位置回推，templates 與 references 都在底下', () => {
  assert.equal(templatesDir(), join(pluginRoot(), 'templates'));
  assert.equal(referencesDir(), join(pluginRoot(), 'references'));
  assert.ok(existsSync(templatesDir()));
  assert.ok(existsSync(referencesDir()));
});

test('查重：翻頁有上限，查不完時報錯而不是無聲回 null', async (t) => {
  // 無聲回 null 會讓呼叫端把既有議題再建一次，正好是查重要防的事
  const full = Array.from({ length: 50 }, (_, i) => ({ number: i, title: `不相干的議題 ${i}` }));
  const stub = await startStubGitea({
    [`GET /api/v1/repos/${REPO}/issues`]: { status: 200, body: full },
  });
  t.after(() => stub.close());

  await assert.rejects(
    () => findIssueByTitle({ base: stub.base, token: 'x' }, REPO, '永遠找不到的標題'),
    (error) => error.code === 'DEDUPE_LIMIT',
  );
});