/**
 * 所有腳本共用的介面契約：具名 flag 輸入、單行 JSON 輸出、--dry-run、
 * 以及「從自身檔案位置回推 plugin 根」而非依賴 cwd。
 * 以 labels-list 當代表，因為契約由 lib 提供，每支腳本表現一致。
 */
import test from 'node:test';
import assert from 'node:assert/strict';
import { runScript } from './helpers/run-script.js';
import { startStubGitea, healthyRoutes } from './helpers/stub-gitea.js';

const REPO = 'plugins/tea-sdlc';

async function withStub(t, overrides = {}) {
  const stub = await startStubGitea(healthyRoutes(REPO, overrides));
  t.after(() => stub.close());
  return stub;
}

const envFor = (stub) => ({ TEA_SDLC_API_BASE: stub.base, TEA_SDLC_TOKEN: 'stub-token' });

// ── 輸入：具名 flag ────────────────────────────────────────────────

test('缺少必填 flag 時失敗，並指名缺的是哪一個', async (t) => {
  const stub = await withStub(t);

  const { code, json } = await runScript('labels-list.js', [], { env: envFor(stub) });

  assert.equal(code, 1);
  assert.equal(json.ok, false);
  assert.equal(json.error.code, 'MISSING_FLAG');
  assert.match(json.error.message, /--repo/);
});

test('不認得的 flag 一律拒絕，不默默忽略', async (t) => {
  const stub = await withStub(t);

  const { json } = await runScript('labels-list.js', ['--repo', REPO, '--verbose'], {
    env: envFor(stub),
  });

  assert.equal(json.error.code, 'UNKNOWN_FLAG');
  assert.match(json.error.message, /--verbose/);
});

test('位置參數一律拒絕：輸入只接受具名 flag', async (t) => {
  const stub = await withStub(t);

  const { json } = await runScript('labels-list.js', [REPO], { env: envFor(stub) });

  assert.equal(json.error.code, 'UNKNOWN_FLAG');
});

test('--repo 格式不是 owner/name 時失敗', async (t) => {
  const stub = await withStub(t);

  const { json } = await runScript('labels-list.js', ['--repo', 'tea-sdlc'], { env: envFor(stub) });

  assert.equal(json.error.code, 'BAD_REPO');
});

test('--key=value 與 --key value 兩種寫法等價', async (t) => {
  const stub = await withStub(t);

  const a = await runScript('labels-list.js', ['--repo', REPO], { env: envFor(stub) });
  const b = await runScript('labels-list.js', [`--repo=${REPO}`], { env: envFor(stub) });

  assert.deepEqual(a.json, b.json);
});

// ── 輸出：單行 JSON ───────────────────────────────────────────────

test('成功時輸出 {ok:true, data}，且沒有 error 欄位', async (t) => {
  const stub = await withStub(t);

  const { json } = await runScript('labels-list.js', ['--repo', REPO], { env: envFor(stub) });

  assert.equal(json.ok, true);
  assert.ok(json.data);
  assert.equal('error' in json, false);
});

test('失敗時輸出 {ok:false, error:{code,message}}，且沒有 data 欄位', async (t) => {
  const stub = await withStub(t);

  const { json } = await runScript('labels-list.js', [], { env: envFor(stub) });

  assert.equal(json.ok, false);
  assert.equal(typeof json.error.code, 'string');
  assert.equal(typeof json.error.message, 'string');
  assert.equal('data' in json, false);
});

test('失敗時 exit code 為 1，成功為 0', async (t) => {
  const stub = await withStub(t);

  const bad = await runScript('labels-list.js', [], { env: envFor(stub) });
  const good = await runScript('labels-list.js', ['--repo', REPO], { env: envFor(stub) });

  assert.equal(bad.code, 1);
  assert.equal(good.code, 0);
});

test('例外不會以 stack trace 洩漏出去，一律收斂成 JSON', async (t) => {
  // 指向一個沒有人在聽的 port，讓 fetch 直接拋連線錯誤
  const { code, json, stderr } = await runScript('labels-list.js', ['--repo', REPO], {
    env: { TEA_SDLC_API_BASE: 'http://127.0.0.1:1/api/v1', TEA_SDLC_TOKEN: 'x' },
  });

  assert.equal(code, 1);
  assert.equal(json.ok, false);
  assert.equal(json.error.code, 'NETWORK_ERROR');
  assert.equal(stderr, '', 'stderr 必須乾淨，訊息一律走 stdout 的 JSON');
});

// ── --dry-run ─────────────────────────────────────────────────────

test('--dry-run 印出將發出的請求，且完全不碰 Gitea', async (t) => {
  const stub = await withStub(t);

  const { code, json } = await runScript('labels-list.js', ['--repo', REPO, '--dry-run'], {
    env: envFor(stub),
  });

  assert.equal(code, 0);
  assert.equal(json.ok, true);
  assert.equal(json.data.dryRun, true);
  assert.deepEqual(json.data.requests, [
    { method: 'GET', path: `/repos/${REPO}/labels` },
  ]);
  assert.equal(stub.requests.length, 0, '--dry-run 不得發出任何請求，連前置檢查也不發');
});

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

test('在任意 cwd 下執行結果相同：腳本從自身位置回推 plugin 根', async (t) => {
  const stub = await withStub(t);

  const fromRoot = await runScript('labels-list.js', ['--repo', REPO], { env: envFor(stub) });
  const fromSlash = await runScript('labels-list.js', ['--repo', REPO], {
    env: envFor(stub),
    cwd: '/',
  });
  const fromTmp = await runScript('labels-list.js', ['--repo', REPO], {
    env: envFor(stub),
    cwd: '/tmp',
  });

  assert.equal(fromRoot.code, 0);
  assert.deepEqual(fromSlash.json, fromRoot.json);
  assert.deepEqual(fromTmp.json, fromRoot.json);
});

test('--dry-run 回報的 templates／references 路徑為絕對路徑，且不隨 cwd 改變', async (t) => {
  const stub = await withStub(t);

  const a = await runScript('labels-list.js', ['--repo', REPO, '--dry-run'], { env: envFor(stub) });
  const b = await runScript('labels-list.js', ['--repo', REPO, '--dry-run'], {
    env: envFor(stub),
    cwd: '/tmp',
  });

  assert.match(a.json.data.paths.templates, /^\/.*\/templates$/);
  assert.match(a.json.data.paths.references, /^\/.*\/references$/);
  assert.deepEqual(b.json.data.paths, a.json.data.paths);
});