// 集成测试：把历史 bug 全部重演为断言；零依赖，node >= 20 直接运行
// 覆盖：演示账号播种/幂等、登录、邀请码增删改查全矩阵、注册路径（静态码/动态码/大小写/拒绝）、
//       「重启后持久化且不重复播种」、管理员角色规则
import fs from 'node:fs';
import os from 'node:os';
import path from 'node:path';
import url from 'node:url';

const root = path.resolve(path.dirname(url.fileURLToPath(import.meta.url)), '..');
const SERVER = path.join(root, 'sync-server/src/index.mjs');
const INVITE = 'ci-static-code';

let tmp;
try { tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'fp-it-')); }
catch { tmp = path.join(root, '.tmp-test'); fs.rmSync(tmp, { recursive: true, force: true }); fs.mkdirSync(tmp, { recursive: true }); }

let pass = 0, fail = 0; const failures = [];
const ok = (cond, label, extra) => {
  if (cond) { pass++; console.log('  ✓ ' + label); }
  else { fail++; failures.push(label); console.log('  ✗ ' + label + (extra ? ' | ' + JSON.stringify(extra).slice(0, 220) : '')); }
};
const api = (base, method, p, body, token) => fetch(base + p, {
  method, headers: { 'content-type': 'application/json', ...(token ? { authorization: 'Bearer ' + token } : {}) },
  body: body === undefined ? undefined : JSON.stringify(body),
}).then(async (r) => ({ status: r.status, body: await r.json().catch(() => null) }));

async function startServer(port, phase) {
  // 每阶段新的模块实例（query 绕过 ESM 缓存）——等价于一次真实的进程重启
  await import(url.pathToFileURL(SERVER).href + '?phase=' + phase);
  const base = 'http://127.0.0.1:' + port;
  for (let i = 0; i < 80; i++) {
    try { const r = await fetch(base + '/health'); if (r.ok) return base; } catch {}
    await new Promise((res) => setTimeout(res, 250));
  }
  throw new Error('server did not come up on port ' + port);
}

// ---------- Phase A：全新库 ----------
const dataA = path.join(tmp, 'A/data'); fs.mkdirSync(dataA, { recursive: true });
process.env.DATA_DIR = dataA; process.env.INVITE_CODE = INVITE; process.env.MAX_USERS = '20'; process.env.PORT = '8891';
console.log('\n== Phase A：全新启动（播种/登录/邀请码全矩阵） ==');
const A = await startServer(8891, 1);

const demoLogin = await api(A, 'POST', '/auth/login', { username: 'demo', password: 'demo1234' });
ok(demoLogin.status === 200 && demoLogin.body?.data?.token, 'demo 登录', demoLogin.body);
const T = demoLogin.body.data.token;

const me = await api(A, 'GET', '/auth/me', undefined, T);
ok(me.body?.data?.username === 'demo' && me.body?.data?.is_admin === true, '/auth/me 返回 demo 且是管理员', me.body);

const fp = await api(A, 'POST', '/api/footprint_list', { query: { page: 1, page_size: 50 } }, T);
ok(fp.body?.data?.total === 16, '演示足迹 16 条（播种成功）', fp.body?.data?.total);
const grades = await api(A, 'POST', '/api/grades_overview', {}, T);
ok(grades.body?.data?.semesters?.length === 4, '演示学期 4 个', grades.body?.data?.semesters?.length);
const tl = await api(A, 'POST', '/api/timeline', { query: {} }, T);
ok((tl.body?.data?.groups?.length ?? 0) >= 1, 'timeline 有分组');
const st = await api(A, 'POST', '/api/stats_overview', {}, T);
ok(st.body?.ok === true, 'stats_overview 可用');

// 附件缩略图：上传带 thumb → 列表标记 → thumb/原图分离读取
const tl0 = await api(A, 'POST', '/api/type_list', {}, T);
const fpUp = await api(A, 'POST', '/api/footprint_upsert', { item: { type_id: (tl0.body?.data?.items || [])[0]?.id, title: '附件缩略图测试', status: 'finished' } }, T);
const fpId = fpUp.body?.data?.id;
ok(!!fpId, '创建附件测试足迹', fpUp.body);
const attAdd = await api(A, 'POST', '/api/attachment_add', { owner_id: fpId, file_name: 'photo.jpg', mime: 'image/jpeg', size: 8, data_b64: Buffer.from('ORIGDATA').toString('base64'), thumb_b64: Buffer.from('THUMBWEBPDATA').toString('base64') }, T);
ok(attAdd.body?.ok === true && !!attAdd.body?.data?.item?.thumb_rel_path, 'attachment_add 存储缩略图', attAdd.body);
const attList = await api(A, 'POST', '/api/attachment_list', { owner_id: fpId }, T);
ok(!!attList.body?.data?.items?.[0]?.thumb_rel_path, 'attachment_list 返回缩略图标记');
const attThumb = await api(A, 'POST', '/api/attachment_thumb', { id: attAdd.body?.data?.item?.id }, T);
ok(attThumb.body?.data?.data_b64 === Buffer.from('THUMBWEBPDATA').toString('base64'), 'attachment_thumb 返回缩略图内容', attThumb.body);
const attRead2 = await api(A, 'POST', '/api/attachment_read', { id: attAdd.body?.data?.item?.id }, T);
ok(attRead2.body?.data?.data_b64 === Buffer.from('ORIGDATA').toString('base64'), 'attachment_read 原图不受影响', attRead2.body);

// 邀请码：增
const c1 = await api(A, 'POST', '/admin/invites/create', { code: 'xiong-friend-2025', remark: '给学弟的码' }, T);
ok(c1.status === 200 && c1.body?.data?.code === 'XIONG-FRIEND-2025', '新建自定义码（大小写归一化）', c1.body);
ok((await api(A, 'POST', '/admin/invites/create', { code: 'xiong-friend-2025' }, T)).status === 400, '重复码被拒');
ok((await api(A, 'POST', '/admin/invites/create', { code: 'ab' }, T)).status === 400, '过短码被拒');
const gen = await api(A, 'POST', '/admin/invites/generate', { count: 3 }, T);
ok((gen.body?.data?.codes ?? []).length === 3, '批量生成 3 个');
// 查
const list1 = (await api(A, 'GET', '/admin/invites', undefined, T)).body.data.invites;
ok(list1.length === 4, '列表数量正确', list1.length);
ok('remark' in list1[0] && 'created_by_name' in list1[0], '列表含 remark/created_by_name');
const target = list1.find((i) => i.code === 'XIONG-FRIEND-2025');
ok(target?.remark === '给学弟的码', '自定义码备注保存', target?.remark);
// 改
ok((await api(A, 'POST', '/admin/invites/update', { id: target.id, remark: '改过的备注' }, T)).status === 200, '改备注');
ok((await api(A, 'POST', '/admin/invites/update', { id: target.id, valid: false }, T)).status === 200, '停用');
ok((await api(A, 'GET', '/admin/invites', undefined, T)).body.data.invites.find((i) => i.id === target.id).valid === false, '停用生效');
ok((await api(A, 'POST', '/auth/register', { username: 'friend1', password: 'password123', invite_code: 'xiong-friend-2025' })).status === 400, '停用码注册被拒');
ok((await api(A, 'POST', '/admin/invites/update', { id: target.id, valid: true }, T)).status === 200, '重新启用');
const regF = await api(A, 'POST', '/auth/register', { username: 'friend1', password: 'password123', invite_code: 'xiong-friend-2025' });
ok(regF.status === 200, '启用后注册成功', regF.body);
ok((await api(A, 'POST', '/admin/invites/update', { id: target.id, valid: true }, T)).status === 400, '已使用的码不可再启用');
// 删
ok((await api(A, 'POST', '/admin/invites/delete', { id: list1[1].id }, T)).status === 200, '删除邀请码');
ok((await api(A, 'POST', '/admin/invites/delete', { id: list1[1].id }, T)).status === 404, '重复删除 404');
// 注册路径
ok((await api(A, 'POST', '/auth/register', { username: 'nocodeuser', password: 'password123' })).status === 400, '无邀请码注册被拒');
ok((await api(A, 'POST', '/auth/register', { username: 'badcode', password: 'password123', invite_code: 'WRONG-CODE' })).status === 400, '错误邀请码被拒');
// 幂等（管理端点）
const reseed = await api(A, 'POST', '/admin/demo-seed', undefined, T);
ok(reseed.body?.data?.seeded === false, '重复播种幂等跳过', reseed.body);

// ---------- Phase B：同一数据目录「重启」（新模块实例 + 新端口） ----------
console.log('\n== Phase B：重启后（持久化 + 不重复播种） ==');
process.env.PORT = '8892';
const B = await startServer(8892, 2);
const login2 = await api(B, 'POST', '/auth/login', { username: 'demo', password: 'demo1234' });
ok(login2.status === 200, '重启后 demo 可登录');
const T2 = login2.body.data.token;
const fp2 = await api(B, 'POST', '/api/footprint_list', { query: { page: 1, page_size: 50 } }, T2);
ok(fp2.body?.data?.total === 17, '重启后仍是 17 条（无重复播种）', fp2.body?.data?.total);
const list2 = (await api(B, 'GET', '/admin/invites', undefined, T2)).body.data.invites;
ok(list2.some((i) => i.code === 'XIONG-FRIEND-2025'), '邀请码跨重启持久化');

// ---------- Phase C：先有用户 → 播种绕过邀请码 + 角色规则 ----------
console.log('\n== Phase C：先注册用户 → demo 播种绕过 + 角色规则 ==');
const dataC = path.join(tmp, 'C/data'); fs.mkdirSync(dataC, { recursive: true });
process.env.DATA_DIR = dataC; process.env.PORT = '8893';
const C = await startServer(8893, 3);
const alice = await api(C, 'POST', '/auth/register', { username: 'alice', password: 'password123', invite_code: 'Ci-Static-Code' });
ok(alice.status === 200, '首位用户用静态码注册（大小写不敏感）', alice.body);
const aliceMe = await api(C, 'GET', '/auth/me', undefined, alice.body.data.token);
ok(aliceMe.body?.data?.is_admin === false, 'alice 在启动播种的 demo 之后注册 → 非管理员', aliceMe.body);
const demoC = await api(C, 'POST', '/auth/login', { username: 'demo', password: 'demo1234' });
ok(demoC.status === 200, '启动播种的 demo 可登录', demoC.body);
const demoMe = await api(C, 'GET', '/auth/me', undefined, demoC.body.data.token);
ok(demoMe.body?.data?.is_admin === true, '启动播种的 demo 是首位用户 → 管理员', demoMe.body);
// seed 绕过：库中已有用户时，register(seed:true) 不要求邀请码（历史 bug 回归）
const authC = await import(url.pathToFileURL(path.join(root, 'sync-server/src/auth.mjs')).href + '?phase=3b');
const seeded2 = authC.register({ username: 'seeduser2', password: 'password123', device_name: 't', seed: true });
ok(!!seeded2?.token, '有用户时 register(seed:true) 绕过邀请码成功', seeded2);
const noSeed = (() => { try { authC.register({ username: 'noseeduser', password: 'password123', device_name: 't' }); return 'ALLOWED(BAD)'; } catch (e) { return e.message; } })();
ok(noSeed === '需要邀请码，请联系管理员', '同库普通注册仍需邀请码', noSeed);
const roles = authC.getDb ? null : null;
const dupSeed = (() => { try { authC.register({ username: 'seeduser2', password: 'password123', device_name: 't', seed: true }); return 'DUP'; } catch (e) { return e.message; } })();
ok(dupSeed === '用户名已存在', 'seed 重复播种被拒（幂等）', dupSeed);

console.log('\n========== 结果 ==========');
console.log('通过 ' + pass + ' / 失败 ' + fail);
if (fail) { console.error('失败项:\n - ' + failures.join('\n - ')); process.exit(1); }
console.log('✓ 集成测试全部通过');
process.exit(0);