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

@Controller()
@ApiTags('root')
export class AppController {
  constructor(private readonly appService: AppService) {}

  @Get()
  @ApiOperation({ summary: 'API welcome message and overview' })
  @ApiResponse({ status: 200, description: 'Returns API overview' })
  getWelcome() {
    return this.appService.getWelcome();
  }

  @Get('health')
  @ApiOperation({ summary: 'Health check endpoint' })
  @ApiResponse({ status: 200, description: 'Returns health status' })
  getHealth() {
    return this.appService.getHealth();
  }

  @Get('stats')
  @ApiOperation({ summary: 'Database statistics' })
  @ApiResponse({ status: 200, description: 'Returns database statistics' })
  getStats() {
    return this.appService.getStats();
  }

  @Get('thesis')
  @ApiOperation({ summary: 'The core thesis this API proves' })
  @ApiResponse({ status: 200, description: 'Returns the research thesis' })
  getThesis() {
    return this.appService.getThesis();
  }
}