import { execFileSync } from 'node:child_process';
import { existsSync, readFileSync, writeFileSync } from 'node:fs';
import path from 'node:path';

import {
  getFeatureDirectory,
  getRequiredFeatureFiles,
  validateFeatureId,
} from './feature-record.mjs';

const [featureId, slug] = process.argv.slice(2);
const repositoryRoot = process.cwd();

if (!featureId || !slug || !validateFeatureId(featureId)) {
  throw new Error('用法：npm run governance:finish -- <功能编号> <英文短名称>');
}

const featureDirectory = getFeatureDirectory(repositoryRoot, featureId, slug);
if (!existsSync(featureDirectory)) {
  throw new Error(`功能档案不存在：${featureDirectory}`);
}

function run(command, args) {
  return execFileSync(command, args, {
    cwd: repositoryRoot,
    encoding: 'utf8',
    stdio: ['ignore', 'pipe', 'pipe'],
  }).trim();
}

/**
 * 完成门禁先验证仓库自身的治理测试，再刷新 GitNexus。业务项目接入后，
 * 根目录 verify 脚本会继续串联前端和后端测试，而不需要改变本门禁入口。
 */
run('npm', ['run', 'test:governance']);
run('npx', ['gitnexus', 'analyze']);

const status = run('npx', ['gitnexus', 'status']);
const diffSummary = run('git', ['diff', '--stat']) || '(没有未提交差异)';
const worktreeSummary = run('git', ['status', '--short']) || '(工作区干净)';
const afterReport = path.join(featureDirectory, 'gitnexus', 'after.md');

if (!existsSync(afterReport) || readFileSync(afterReport, 'utf8').trim().length === 0) {
  writeFileSync(
    afterReport,
    `# GitNexus 开发后基线\n\n` +
      `## GitNexus 状态\n\n\`\`\`text\n${status}\n\`\`\`\n\n` +
      `## Git 已跟踪变更摘要\n\n\`\`\`text\n${diffSummary}\n\`\`\`\n\n` +
      `## Git 工作区摘要\n\n\`\`\`text\n${worktreeSummary}\n\`\`\`\n`,
    'utf8',
  );
}

const missingFiles = getRequiredFeatureFiles().filter((relativeFile) => {
  const file = path.join(featureDirectory, relativeFile);
  return !existsSync(file) || readFileSync(file, 'utf8').trim().length === 0;
});

if (missingFiles.length > 0) {
  throw new Error(`完成门禁未通过，缺少或为空：\n- ${missingFiles.join('\n- ')}`);
}

process.stdout.write(
  `基础门禁已通过。提交前仍须人工确认 GitNexus 影响报告、业务测试、视觉 QA 和回退说明。\n`,
);