import express from 'express';
import multer from 'multer';
import { auth } from '../../middleware/auth';
import { s3Service } from '../../services/s3Service.js';
import { logger } from '../../config/logger.js';
import { imageResolutions } from '../../../src/config/imageResolutions.js';

const router = express.Router();
const upload = multer();

router.post('/upload-url', auth, async (req, res) => {
  try {
    const { fileName, fileType, resolution } = req.body;
    
    const selectedResolution = imageResolutions.find(r => r.id === resolution);
    if (!selectedResolution) {
      throw new Error('Invalid resolution');
    }

    const { uploadUrl, imageId, key } = await s3Service.getUploadUrl(fileName, fileType);
    
    logger.info(`Generated upload URL for image: ${fileName}`);
    res.json({ uploadUrl, imageId, key });
  } catch (error) {
    logger.error('Error generating upload URL:', error);
    res.status(500).json({ error: 'Failed to generate upload URL' });
  }
});

router.post('/process', auth, upload.single('image'), async (req, res) => {
  try {
    const { file } = req;
    const { resolution } = req.body;

    if (!file) {
      throw new Error('No file uploaded');
    }

    const selectedResolution = imageResolutions.find(r => r.id === resolution);
    if (!selectedResolution) {
      throw new Error('Invalid resolution');
    }

    const result = await s3Service.optimizeAndUpload(
      file.buffer,
      file.originalname,
      selectedResolution
    );

    logger.info(`Successfully processed image: ${file.originalname}`);
    res.json(result);
  } catch (error) {
    logger.error('Error processing image:', error);
    res.status(500).json({ error: 'Failed to process image' });
  }
});

export default router;