import { NestFactory } from '@nestjs/core';
import type { NestExpressApplication } from '@nestjs/platform-express';
import type { RequestHandler } from 'express';
import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';
import { apiReference } from '@scalar/nestjs-api-reference';
import * as pkg from '../package.json';
import { AppModule } from './app.module.js';

async function bootstrap() {
  const app = await NestFactory.create<NestExpressApplication>(AppModule);
  app.enableShutdownHooks();
  // 'mcp' is excluded so the MCP endpoint lives at /mcp, not /api/mcp (like Scalar at /)
  app.setGlobalPrefix('api', { exclude: ['mcp'] });

  // Scalar API docs at / (OpenAPI JSON at /docs-json), outside the api prefix.
  const docConfig = new DocumentBuilder()
    .setTitle('MeshBot API')
    .setDescription(
      'Meshtastic bridge bot: status, send text messages, list device channels and known nodes.',
    )
    .addTag('Mesh', 'Meshtastic bridge control and telemetry')
    .setVersion(pkg.version)
    .build();
  const document = SwaggerModule.createDocument(app, docConfig);
  const http = app.getHttpAdapter().getInstance();
  http.get('/docs-json', (_req, res) => {
    res.json(document);
  });
  http.get('/', apiReference({ url: '/docs-json' }) as RequestHandler);

  await app.listen(process.env.PORT ?? 3000);
}
bootstrap();