import * as dotenv from 'dotenv';
import { NestFactory } from '@nestjs/core';
import { ValidationPipe } from '@nestjs/common';
import { Logger } from 'nestjs-pino';
import { AppModule } from './app.module';
import { json } from 'express';

// Load environment variables before anything else
dotenv.config();

async function bootstrap() {
  try {
    const app = await NestFactory.create(AppModule, { bufferLogs: true });
    
    // Use pino logger for the entire application
    app.useLogger(app.get(Logger));
    
    const logger = app.get(Logger);
    
    logger.log({
      message: 'Starting Meteor Backend',
      service_name: 'meteor-web-backend',
      env: process.env.NODE_ENV,
      cwd: process.cwd(),
    });

    // fixme： 打开后json反序列化失败
    // // Configure raw body parsing for webhook endpoints
    // app.use(
    //   '/api/v1/payments/webhook',
    //   json({
    //     verify: (req: any, res, buf) => {
    //       req.rawBody = buf;
    //     },
    //   }),
    // );

    app.useGlobalPipes(
      new ValidationPipe({
        whitelist: true,
        forbidNonWhitelisted: true,
        transform: true,
        skipMissingProperties: false,
        validationError: { target: false },
      }),
    );

    // Enable CORS for frontend
    app.enableCors({
      origin: 'http://localhost:3000', // Frontend runs on port 3000
      credentials: true,
    });

    const port = process.env.PORT ?? 3000;
    await app.listen(port);
    
    logger.log({
      message: 'Application started successfully',
      service_name: 'meteor-web-backend',
      port: port,
      url: `http://localhost:${port}`,
    });
  } catch (error) {
    // Fallback to console if logger is not available
    const errorLogger = console;
    
    errorLogger.error(JSON.stringify({
      timestamp: new Date().toISOString(),
      level: 'error',
      service_name: 'meteor-web-backend',
      message: 'Failed to start application',
      error: {
        name: error.name,
        message: error.message,
        stack: error.stack,
      },
    }));
    
    if (
      error.message.includes('database') ||
      error.message.includes('connection')
    ) {
      errorLogger.error(JSON.stringify({
        timestamp: new Date().toISOString(),
        level: 'error',
        service_name: 'meteor-web-backend',
        message: 'Database connection error detected',
        troubleshooting: [
          'Database server is running',
          'DATABASE_URL in .env is correct',
          'Database credentials are valid',
          'Network connectivity to database',
        ],
      }));
    }
    process.exit(1);
  }
}

void bootstrap();