const express = require('express');
const { User } = require('../models'); // Import from models/index.js to get models with associations
const { authenticateToken } = require('../middleware/auth');
const { uploadProfileImage } = require('../middleware/upload');
const fs = require('fs').promises;
const path = require('path');
const router = express.Router();

router.get('/profile', authenticateToken, async (req, res) => {
  try {
    const user = await User.findByPk(req.user.id, {
      attributes: { exclude: ['password'] }
    });
    res.json(user);
  } catch (error) {
    res.status(500).json({ error: error.message });
  }
});

router.get('/:id', async (req, res) => {
  try {
    const user = await User.findByPk(req.params.id, {
      attributes: { exclude: ['password', 'email', 'phone', 'address'] }
    });
    
    if (!user) {
      return res.status(404).json({ error: 'User not found' });
    }
    
    res.json(user);
  } catch (error) {
    res.status(500).json({ error: error.message });
  }
});

router.put('/profile', authenticateToken, async (req, res) => {
  try {
    const { 
      firstName, 
      lastName, 
      email, 
      phone, 
      address1,
      address2,
      city,
      state,
      zipCode,
      country
    } = req.body;
    
    // Build update object, excluding empty email
    const updateData = {
      firstName,
      lastName,
      phone,
      address1,
      address2,
      city,
      state,
      zipCode,
      country
    };
    
    // Only include email if it's not empty
    if (email && email.trim() !== '') {
      updateData.email = email;
    }
    
    await req.user.update(updateData);

    const updatedUser = await User.findByPk(req.user.id, {
      attributes: { exclude: ['password'] }
    });

    res.json(updatedUser);
  } catch (error) {
    console.error('Profile update error:', error);
    res.status(500).json({ 
      error: error.message,
      details: error.errors ? error.errors.map(e => ({ field: e.path, message: e.message })) : undefined
    });
  }
});

// Upload profile image endpoint
router.post('/profile/image', authenticateToken, (req, res) => {
  uploadProfileImage(req, res, async (err) => {
    if (err) {
      console.error('Upload error:', err);
      return res.status(400).json({ error: err.message });
    }

    if (!req.file) {
      return res.status(400).json({ error: 'No file uploaded' });
    }

    try {
      // Delete old profile image if exists
      const user = await User.findByPk(req.user.id);
      if (user.profileImage) {
        const oldImagePath = path.join(__dirname, '../uploads/profiles', user.profileImage);
        try {
          await fs.unlink(oldImagePath);
        } catch (unlinkErr) {
          console.error('Error deleting old image:', unlinkErr);
        }
      }

      // Update user with new image filename
      await user.update({
        profileImage: req.file.filename
      });

      res.json({
        message: 'Profile image uploaded successfully',
        filename: req.file.filename,
        imageUrl: `/uploads/profiles/${req.file.filename}`
      });
    } catch (error) {
      console.error('Database update error:', error);
      res.status(500).json({ error: 'Failed to update profile image' });
    }
  });
});

module.exports = router;