import express from 'express';

import cors from 'cors';

import bodyParser from 'body-parser';

import morgan from 'morgan';

import mainRouter from '@app/routes/main';

import userRouter from '@app/routes/users';

import authRouter from '@app/routes/auth';

import moodRouter from '@app/routes/moods';

import { errorHandler } from '@app/middleware/errorHandler';

import { PrismaClient } from '@prisma/client';

import { bootWorkers, closeAllWorkers, closeAllQueues } from '@app/lib/queue';

import pino from 'pino';

import pinoHttp from 'pino-http';

export function createApp() {

  const app = express();

  bootWorkers();

  // Configure CORS

  app.use(cors({

    origin: process.env.FRONTEND_URL || '*',

    credentials: true

  }));

  app.use(bodyParser.json());

  // Create Pino logger

  const logger = pino({

    level: process.env.LOG_LEVEL || 'info',

    transport: {

      target: 'pino-pretty', // Human-readable in development

      options: {

        colorize: true,

        singleLine: false,

        messageFormat: '{if levelLabel}{levelLabel} - {end}{msg}',

      },

    },

  });

  // Use pino-http for HTTP logging (better than Morgan for structured logs)

  app.use(pinoHttp({ logger }));

  app.get('/', mainRouter);

  app.use("/users", userRouter);

  app.use("/auth", authRouter);

  app.use("/moods", moodRouter);

  app.use(errorHandler); // always last

  process.on('SIGTERM', shutdown);

  process.on('SIGINT', shutdown);

  return app;

}

const shutdown = async () => {

  await Promise.all([closeAllWorkers(), closeAllQueues()]);

  process.exit(0);

};