/**
 * 列出 Parse Server 所有表及其字段
 *
 * 用法: cd backend && npx tsx scripts/list-schemas.ts
 */
import 'dotenv/config';
import Parse from '../src/db/parse-client.js';

interface FieldDef {
  type: string;
  targetClass?: string;
}

async function main(): Promise<void> {
  console.log('=== Parse Server 数据库 Schema 一览 ===\n');
  console.log(`Server: ${Parse.serverURL}`);
  console.log(`App ID: ${Parse.applicationId}\n`);

  // 测试连接
  try {
    await new Parse.Query('_User').limit(1).find({ useMasterKey: true });
    console.log('✅ Parse 连接正常\n');
  } catch (err: any) {
    console.error('❌ Parse 连接失败:', err.message);
    process.exit(1);
  }

  // 获取所有 schema
  const schemas = await Parse.Schema.all({ useMasterKey: true });

  console.log(`共 ${schemas.length} 个表:\n`);
  console.log('-'.repeat(90));

  for (const schema of schemas) {
    const className = schema.className;
    const fields = schema.fields as Record<string, FieldDef>;

    // 跳过内部系统表
    if (className.startsWith('_') && className !== '_User') {
      continue;
    }

    console.log(`\n📦 ${className}`);
    console.log(`   字段数: ${Object.keys(fields).length}`);

    const entries = Object.entries(fields)
      .filter(([name]) => !name.startsWith('_'))
      .sort(([a], [b]) => a.localeCompare(b));

    const stringFields: string[] = [];
    const numberFields: string[] = [];
    const pointerFields: string[] = [];
    const arrayFields: string[] = [];
    const dateFields: string[] = [];
    const booleanFields: string[] = [];
    const otherFields: string[] = [];

    for (const [name, def] of entries) {
      const type = def.type;
      if (type === 'String') {
        stringFields.push(name);
      } else if (type === 'Number') {
        numberFields.push(name);
      } else if (type === 'Pointer') {
        const target = def.targetClass ? ` → ${def.targetClass}` : '';
        pointerFields.push(`${name}${target}`);
      } else if (type === 'Array') {
        arrayFields.push(name);
      } else if (type === 'Date') {
        dateFields.push(name);
      } else if (type === 'Boolean') {
        booleanFields.push(name);
      } else {
        otherFields.push(`${name}(${type})`);
      }
    }

    if (stringFields.length) console.log(`   String:   ${stringFields.join(', ')}`);
    if (numberFields.length) console.log(`   Number:   ${numberFields.join(', ')}`);
    if (pointerFields.length) console.log(`   Pointer:  ${pointerFields.join(', ')}`);
    if (arrayFields.length) console.log(`   Array:    ${arrayFields.join(', ')}`);
    if (dateFields.length) console.log(`   Date:     ${dateFields.join(', ')}`);
    if (booleanFields.length) console.log(`   Boolean:  ${booleanFields.join(', ')}`);
    if (otherFields.length) console.log(`   Other:    ${otherFields.join(', ')}`);
  }

  console.log('\n' + '-'.repeat(90));
  console.log('\n完成!');
}

main().catch((err) => {
  console.error('失败:', err.message);
  process.exit(1);
});