import { Controller, Get } from '@nestjs/common';
import { ApiTags, ApiOperation, ApiResponse } from '@nestjs/swagger';

@ApiTags('health')
@Controller('health')
export class HealthController {
  @Get()
  @ApiOperation({ summary: 'Health check endpoint' })
  @ApiResponse({
    status: 200,
    description: 'Service is healthy',
    schema: {
      example: {
        status: 'ok',
        timestamp: '2024-01-01T00:00:00.000Z',
        uptime: 12345.67,
        environment: 'development',
        version: '0.1.0',
      },
    },
  })
  check() {
    return {
      status: 'ok',
      timestamp: new Date().toISOString(),
      uptime: process.uptime(),
      environment: process.env.NODE_ENV || 'development',
      version: '0.1.0',
    };
  }

  @Get('ready')
  @ApiOperation({ summary: 'Readiness check endpoint' })
  @ApiResponse({
    status: 200,
    description: 'Service is ready to accept traffic',
  })
  ready() {
    // Add checks for database, Redis, etc.
    return {
      status: 'ready',
      checks: {
        database: 'ok',
        redis: 'ok',
      },
    };
  }

  @Get('live')
  @ApiOperation({ summary: 'Liveness check endpoint' })
  @ApiResponse({
    status: 200,
    description: 'Service is alive',
  })
  live() {
    return {
      status: 'alive',
    };
  }
}