const Product = require('../models/product');

exports.getAddProduct = (req, res, next) => {
  res.render('admin/edit-product', {
    pageTitle: 'Add Product',
    path: '/admin/add-product',
    editing: false
  });
};

exports.postAddProduct = async (req, res, next) => {
  try {
    console.log('§ postAddProduct ➡️', req.body);
    const { title, imageUrl, price, description } = req.body;
    const product = new Product({ title, price, description, imageUrl });
    await product.save();
    console.log('✓ Product saved:', product._id);
    return res.redirect('/admin/products');
  } catch (err) {
    console.error('✗ Error in postAddProduct:', err);
    next(err); // this will trigger your error‐handler (or crash if none)
  }
};

exports.getEditProduct = (req, res, next) => {
  const editMode = req.query.edit;
  if (!editMode) {
    return res.redirect('/');
  }
  const prodId = req.params.productId;
  Product.findById(prodId)
    .then(product => {
      if (!product) {
        return res.redirect('/');
      }
      res.render('admin/edit-product', {
        pageTitle: 'Edit Product',
        path: '/admin/edit-product',
        editing: editMode,
        product: product
      });
    })
    .catch(err => console.log(err));
};

exports.postEditProduct = async (req, res, next) => {
  try {
    console.log('§ postEditProduct ➡️', req.body);
    const { productId, title, imageUrl, price, description } = req.body;
    const product = await Product.findById(productId);
    if (!product) {
      console.warn('!! Tried to edit non‑existent product:', productId);
      return res.redirect('/admin/products');
    }
    product.title = title;
    product.price = price;
    product.description = description;
    product.imageUrl = imageUrl;
    await product.save();
    console.log('✓ Product updated:', product._id);
    return res.redirect('/admin/products');
  } catch (err) {
    console.error('✗ Error in postEditProduct:', err);
    next(err);
  }
};

exports.getProducts = (req, res, next) => {
  Product.find()
    // .select('title price -_id')
    // .populate('userId', 'name')
    .then(products => {
      console.log(products);
      res.render('admin/products', {
        prods: products,
        pageTitle: 'Admin Products',
        path: '/admin/products'
      });
    })
    .catch(err => console.log(err));
};

exports.postDeleteProduct = async (req, res, next) => {
  try {
    const prodId = req.body.productId;
    // Mongoose 6+: use findByIdAndDelete
    await Product.findByIdAndDelete(prodId);
    return res.redirect('/admin/products');
  } catch (err) {
    console.error(err);
    next(err);
  }
};