import assert from 'node:assert/strict';
import { mkdtempSync, mkdirSync, readFileSync, rmSync, writeFileSync } from 'node:fs';
import { tmpdir } from 'node:os';
import path from 'node:path';
import test from 'node:test';

import {
  parseFrontmatter,
  runFrontmatterValidation,
  validateFrontendState,
  validateFrontendTransition,
  validateV2Document,
} from '../scripts/validate-changelog-frontmatter.mjs';


const FILE = 'changelogs-v2/2026-07/24_5218_工作流治理-修改接口-管理后台.md';

function metadata(overrides = {}) {
  return {
    schema: 'hl-changelog/v2',
    ticket: '5218',
    title: '工作流治理',
    consumer: 'admin',
    author: 'lc(GIT)',
    change_type: '修改接口',
    backend_status: 'deployed',
    gateway_status: 'verified',
    frontend_status: 'pending',
    frontend_owner: '',
    frontend_ref: '',
    target_release: '',
    verified_at: '',
    status_note: '',
    updated_at: '2026-07-24',
    base: 'dev-v3',
    ...overrides,
  };
}

function document(overrides = {}) {
  const fields = metadata(overrides);
  const frontmatter = Object.entries(fields)
    .map(([key, value]) => `${key}: "${value}"`)
    .join('\n');
  return `---\n${frontmatter}\n---\n\n# 工作流治理\n\n## 二、变更接口清单\n\n| # | 接口 | 方法 | 路径 | 变更类型 | 说明 |\n|---|---|---|---|---|---|\n| 1 | 保存配置 | POST | \`/admin/workflow/config\` | 修改请求 | 保存工作流配置 |\n\n## 三、接口详情\n\n### 1. 保存配置 \`POST /admin/workflow/config\`\n\n**VO**: \`WorkflowConfigReqVO / String\`\n\n#### 使用场景\n\n- 管理员保存工作流配置。\n\n#### 入参\n\n| 字段 | 位置 | 类型 | 必填 | 约束 | 说明 |\n|---|---|---|---|---|---|\n| name | Body | String | ✅ | 非空 | 配置名称 |\n\n#### 出参 \`Result<String>\`\n\n| 字段 | 类型 | 说明 |\n|---|---|---|\n| data | String | 配置 ID |\n\n#### 请求示例\n\n\`\`\`json\n{ "name": "审批流" }\n\`\`\`\n\n#### 响应示例\n\n\`\`\`json\n{ "code": 200, "message": "成功", "data": "1", "success": true }\n\`\`\`\n\n#### 空数据 / 降级响应\n\n成功时一定返回字符串 ID。\n\n#### 错误响应\n\n\`\`\`json\n{ "code": 400, "message": "name 不能为空", "data": null, "success": false }\n\`\`\`\n\n#### 业务边界\n\n- 业务失败也必须检查响应体 code。\n\n## 四、契约约束与正确调用方式\n\n- 请求体必须使用 JSON。\n\n## 五、数据库行为\n\n- 成功请求保存一份配置，失败请求不产生业务写入。\n\n## 六、边界行为\n\n- 未登录返回 401。\n\n## 六.6、修改前后对比\n\n| 字段 | 改前 | 改后 |\n|---|---|---|\n| name | 可为空 | 必填 |\n\n## 六.7、影响评估\n\n- **是否破坏向后兼容**: 否\n- **前端是否必须同步上线**: 是\n- **前端 workaround 清理点**: 无\n\n## 七、不影响范围\n\n- 查询接口不变。\n\n## 八、测试环境已验证\n\n- POST /admin/workflow/config → 200 ✓\n\n## 十、相关文档\n\n- Issue: #5218\n\n## 关联 / 联系人\n\n- **后端负责人**: @lc\n`;
}

function incompleteApiDocument() {
  const fields = metadata();
  const frontmatter = Object.entries(fields)
    .map(([key, value]) => `${key}: "${value}"`)
    .join('\n');
  return `---\n${frontmatter}\n---\n\n# 工作流治理\n\n## 变更接口\n\n- POST /admin/workflow/config。\n\n## 验证证据\n\n- 自动化测试通过。\n`;
}

test('parses quoted flat YAML frontmatter', () => {
  const parsed = parseFrontmatter(document());
  assert.equal(parsed.metadata.schema, 'hl-changelog/v2');
  assert.equal(parsed.metadata.frontend_status, 'pending');
});

test('CHANGELOG_TEMPLATE.md contains every section enforced for API handoffs', () => {
  const template = readFileSync(
    new URL('../CHANGELOG_TEMPLATE.md', import.meta.url),
    'utf8',
  );
  for (const value of [
    'author: "{推送者登录名}(GIT)"',
    '## 二、变更接口清单',
    '## 三、接口详情',
    '#### 使用场景',
    '#### 入参',
    '#### 出参',
    '#### 请求示例',
    '#### 响应示例',
    '#### 空数据 / 降级响应',
    '#### 错误响应',
    '#### 业务边界',
    '## 四、契约约束与正确调用方式',
    '## 五、数据库行为',
    '## 六、边界行为',
    '## 六.6、修改前后对比',
    '## 六.7、影响评估',
    '## 七、不影响范围',
    '## 八、测试环境已验证',
    '## 十、相关文档',
    '## 关联 / 联系人',
  ]) {
    assert.ok(template.includes(value), `template missing ${value}`);
  }
});

test('accepts a complete v2 handoff with pending frontend consumption', () => {
  assert.deepEqual(validateV2Document(FILE, document(), { requireV2: true }), []);
});

test('rejects an API handoff that does not follow CHANGELOG_TEMPLATE.md', () => {
  const errors = validateV2Document(FILE, incompleteApiDocument(), { requireV2: true });
  assert.ok(errors.some(({ code }) => code === 'E_API_TEMPLATE'));
});

test('rejects an endpoint detail without a required self-contained contract block', () => {
  const value = document().replace('#### 错误响应', '#### 异常说明');
  const errors = validateV2Document(FILE, value, { requireV2: true });
  assert.ok(errors.some(({ code }) => code === 'E_API_DETAIL'));
});

test('requires a use case and explicit empty/degraded behavior for every endpoint', () => {
  const value = document()
    .replace('#### 使用场景', '#### 调用时机')
    .replace('#### 空数据 / 降级响应', '#### 无数据');
  const errors = validateV2Document(FILE, value, { requireV2: true });
  assert.ok(errors.some(({ code, message }) => (
    code === 'E_API_DETAIL'
    && message.includes('使用场景')
    && message.includes('空数据 / 降级响应')
  )));
});

test('rejects a mismatch between the API list and endpoint detail headings', () => {
  const value = document().replace(
    '### 1. 保存配置 `POST /admin/workflow/config`',
    '### 1. 保存配置 `POST /admin/workflow/other`',
  );
  const errors = validateV2Document(FILE, value, { requireV2: true });
  assert.ok(errors.some(({ code }) => code === 'E_API_ENDPOINTS'));
});

test('requires the template author format and write-operation database section', () => {
  const invalidAuthor = validateV2Document(
    FILE,
    document({ author: 'lc' }),
    { requireV2: true },
  );
  assert.ok(invalidAuthor.some(({ code }) => code === 'E_AUTHOR'));

  const withoutDatabaseBehavior = document().replace(
    '## 五、数据库行为',
    '## 五、持久化说明',
  );
  const errors = validateV2Document(FILE, withoutDatabaseBehavior, { requireV2: true });
  assert.ok(errors.some(({ code }) => code === 'E_API_TEMPLATE'));
});

test('rejects backend and gateway pending at publication', () => {
  const errors = validateV2Document(
    FILE,
    document({ backend_status: 'pending', gateway_status: 'pending' }),
    { requireV2: true },
  );
  assert.ok(errors.some(({ code }) => code === 'E_BACKEND_PENDING'));
  assert.ok(errors.some(({ code }) => code === 'E_GATEWAY_PENDING'));
});

test('requires frontend evidence as status advances', () => {
  assert.deepEqual(
    validateFrontendState(metadata({ frontend_status: 'claimed' })),
    ['claimed 必须填写 frontend_owner'],
  );
  assert.deepEqual(
    validateFrontendState(metadata({
      frontend_status: 'implemented',
      frontend_owner: 'frontend-team',
      frontend_ref: 'mmg/hl-ui@abc1234',
    })),
    [],
  );
  assert.ok(
    validateFrontendState(metadata({
      frontend_status: 'verified',
      frontend_owner: 'frontend-team',
      frontend_ref: 'mmg/hl-ui@abc1234',
      target_release: 'prod-2026.07.24',
      verified_at: '2026-02-30',
    })).includes('verified_at 必须是 ISO 日期或时间'),
  );
});

test('rejects skipped transitions and requires a rollback reason', () => {
  assert.ok(validateFrontendTransition('pending', 'implemented').length > 0);
  assert.deepEqual(validateFrontendTransition('pending', 'claimed'), []);
  assert.ok(validateFrontendTransition('released', 'implemented').length > 0);
  assert.deepEqual(
    validateFrontendTransition('released', 'implemented', '测试发布已回滚'),
    [],
  );
});

test('new changelog requires v2 while a modified legacy file remains compatible', () => {
  const root = mkdtempSync(path.join(tmpdir(), 'hl-frontmatter-'));
  try {
    const file = path.join(root, ...FILE.split('/'));
    mkdirSync(path.dirname(file), { recursive: true });
    writeFileSync(file, '# legacy\n');
    const newResult = runFrontmatterValidation([{ status: 'A', targetPath: FILE }], root);
    assert.ok(newResult.errors.some(({ code }) => code === 'E_FRONTMATTER'));
    const modifiedResult = runFrontmatterValidation([{ status: 'M', targetPath: FILE }], root);
    assert.deepEqual(modifiedResult.errors, []);
  } finally {
    rmSync(root, { recursive: true, force: true });
  }
});

test('detects metadata and filename mismatches', () => {
  const errors = validateV2Document(
    FILE,
    document({ ticket: '9999', change_type: '新增接口' }),
    { requireV2: true },
  );
  assert.ok(errors.some(({ code }) => code === 'E_TICKET_MISMATCH'));
  assert.ok(errors.some(({ code }) => code === 'E_TYPE_MISMATCH'));
});

test('rejects unsupported consumers and impossible dates', () => {
  const errors = validateV2Document(
    FILE,
    document({ consumer: 'browser', updated_at: '2026-02-30' }),
    { requireV2: true },
  );
  assert.ok(errors.some(({ code }) => code === 'E_CONSUMER'));
  assert.ok(errors.some(({ code }) => code === 'E_UPDATED_AT'));
});