import { NestFactory, Reflector } from '@nestjs/core';
import { AppModule } from './app.module';
import {
  FastifyAdapter,
  NestFastifyApplication,
} from '@nestjs/platform-fastify';
import { Logger, NotFoundException, ValidationPipe } from '@nestjs/common';
import { Logger as PinoLogger } from 'nestjs-pino';
import { TransformHttpResponseInterceptor } from './common/interceptors/http-response.interceptor';
import { WsRedisIoAdapter } from './ws/adapter/ws-redis.adapter';
import fastifyMultipart from '@fastify/multipart';
import fastifyCookie from '@fastify/cookie';
import fastifyIp from 'fastify-ip';
import { InternalLogFilter } from './common/logger/internal-log-filter';
import { SwaggerModule, DocumentBuilder } from '@nestjs/swagger';
import { cleanupOpenApiDoc } from 'nestjs-zod';

async function bootstrap() {
  const app = await NestFactory.create<NestFastifyApplication>(
    AppModule,
    new FastifyAdapter({
      trustProxy: true,
      routerOptions: {
        maxParamLength: 1000,
        ignoreTrailingSlash: true,
        ignoreDuplicateSlashes: true,
      },
    }),
    {
      rawBody: true,
      // captures NestJS internal errors
      logger: new InternalLogFilter(),
      // bufferLogs must be false else pino will fail
      // to log OnApplicationBootstrap logs
      bufferLogs: false,
    },
  );

  app.useLogger(app.get(PinoLogger));

  app.setGlobalPrefix('api', {
    exclude: ['robots.txt', 'share/:shareId/p/:pageSlug', 'mcp'],
  });

  const reflector = app.get(Reflector);
  const redisIoAdapter = new WsRedisIoAdapter(app);
  await redisIoAdapter.connectToRedis();

  app.useWebSocketAdapter(redisIoAdapter);

  await app.register(fastifyIp);
  await app.register(fastifyMultipart);
  await app.register(fastifyCookie);

  app
    .getHttpAdapter()
    .getInstance()
    .addContentTypeParser(
      'application/scim+json',
      { parseAs: 'string' },
      (_, body, done) => {
        try {
          const json = JSON.parse(body.toString());
          done(null, json);
        } catch (err: any) {
          done(err);
        }
      },
    );

  app
    .getHttpAdapter()
    .getInstance()
    .decorateReply('setHeader', function (name: string, value: unknown) {
      this.header(name, value);
    })
    .decorateReply('end', function () {
      this.send('');
    })
    .addHook('preHandler', function (req, reply, done) {
      // don't require workspaceId for the following paths
      const excludedPaths = [
        '/api/auth/setup',
        '/api/health',
        '/api/billing/stripe/webhook',
        '/api/workspace/check-hostname',
        '/api/sso/google',
        '/api/workspace/create',
        '/api/workspace/joined',
        '/api/workspace/find-by-email',
      ];

      if (
        req.originalUrl.startsWith('/api') &&
        !excludedPaths.some((path) => req.originalUrl.startsWith(path))
      ) {
        if (!req.raw?.['workspaceId'] && req.originalUrl !== '/api') {
          throw new NotFoundException('Workspace not found');
        }
        done();
      } else {
        done();
      }
    });

  app.useGlobalPipes(
    new ValidationPipe({
      whitelist: true,
      stopAtFirstError: true,
      transform: true,
    }),
  );

  app.enableCors();
  app.useGlobalInterceptors(new TransformHttpResponseInterceptor(reflector));
  app.enableShutdownHooks();

  // Swagger UI — enabled in dev/staging by default; opt-in for production via env
  const swaggerEnabled =
    process.env.NODE_ENV !== 'production' ||
    process.env.SWAGGER_ENABLED === 'true';

  if (swaggerEnabled) {
    const swaggerConfig = new DocumentBuilder()
      .setTitle('AcadeDoc API')
      .setDescription(
        'API officielle AcadeDoc — endpoints v1 (acadenice fork extensions on Docmost upstream)',
      )
      .setVersion('1.0')
      .addBearerAuth()
      .addCookieAuth('authToken')
      .addTag('templates', 'Templates de pages')
      .addTag('sync-blocks', 'Sync blocks (cross-page content)')
      .addTag('audit-log', 'Audit log (read-only)')
      .addTag('api-keys', 'Personal API tokens')
      .addTag('clipper', 'Web clipper')
      .addTag('graph', 'Knowledge graph')
      .addTag('rbac', 'RBAC permissions/roles')
      .addTag('comments', 'Page + row comments')
      .addTag('notifications', 'Notifications + preferences')
      .addTag('security', 'OIDC / SSO config')
      .addTag('backlinks', 'Bidirectional backlinks')
      .addTag('slash-commands', 'Custom slash commands')
      .build();

    const document = SwaggerModule.createDocument(app, swaggerConfig);
    SwaggerModule.setup('api/docs', app, cleanupOpenApiDoc(document));
  }

  const logger = new Logger('NestApplication');

  process.on('unhandledRejection', (reason, promise) => {
    logger.error(`UnhandledRejection, reason: ${reason}`, promise);
  });

  process.on('uncaughtException', (error) => {
    logger.error('UncaughtException:', error);
  });

  const port = process.env.PORT || 3000;
  const host = process.env.HOST || '0.0.0.0';
  await app.listen(port, host, () => {
    logger.log(
      `Listening on http://127.0.0.1:${port} / ${process.env.APP_URL}`,
    );
  });
}

bootstrap();