import type { NestExpressApplication } from '@nestjs/platform-express';

const express = require('express') as {
  json(options: {
    limit: string;
    verify(request: { rawBody?: Buffer }, response: unknown, buffer: Buffer): void;
  }): (...args: unknown[]) => unknown;
};

export const DEFAULT_JSON_BODY_LIMIT = '2mb';
export const IMPORT_JSON_BODY_LIMIT = '25mb';

export function configureHttpBodyParsers(app: NestExpressApplication) {
  // Import preview/confirmation temporarily carries the source CSV/TSV in
  // JSON. Give only these endpoints the larger boundary; keeping ordinary
  // JSON at 2 MiB limits the duplicate raw-buffer + parsed-object footprint.
  app.use('/api/client/send/imports', express.json({
    limit: IMPORT_JSON_BODY_LIMIT,
    verify(request, _response, buffer) {
      request.rawBody = buffer;
    },
  }));
  app.useBodyParser('json', { limit: DEFAULT_JSON_BODY_LIMIT });
  app.useBodyParser('urlencoded', { limit: DEFAULT_JSON_BODY_LIMIT, extended: true });
}