import { Product } from "./ProductModel.js";
import cloudinary from "../../Utils/cloudinary.js";
import { v4 as uuidv4 } from "uuid";
import { CategoryModel } from "../Category/CategoryModel.js";
export const createProduct = async (req, res) => {
  try {
    let findProduct = "";
    let product = { _id: "" };

    if (req.body?.product_id) {
      findProduct = await Product.findById(req.body.product_id);
    }
    const name = req.body?.name;
    if (!findProduct) {
      const data = await Product.findOne({
        name: { $regex: new RegExp(`^${name}$`, "ig") },
      }).exec();
      if (data)
        return res
          .status(400)
          .json({ message: "Product name already exists!" });
      req.body.addedBy = req.user._id;
      product = await Product.create(req.body);
    } else {
      const data = await Product.findOne({
        _id: { $ne: findProduct._id },
        name: { $regex: new RegExp(`^${name}$`, "ig") },
      }).exec();
      if (data)
        return res
          .status(400)
          .json({ message: "Product name already exists!" });
      product = await Product.findByIdAndUpdate(req.body.product_id, req.body);
    }
    res.status(201).json({
      message: "Product details added successfully!",
      product_id: product._id,
    });
  } catch (error) {
    res.status(500).json({
      message: error.message ? error.message : "Something went wrong!",
    });
  }
};

///////////////////////////////////////////////////////////////////////////////////////
export const updateProduct = async (req, res) => {
  try {
    // console.log("Product ID:", req.params.id);
    // console.log("Files:", req.files);
    // console.log("Body:", req.body);

    const { removedImages } = req.body;
    const files = req.files?.images || [];

    // Parse removedImages
    const removedImageIds = removedImages ? JSON.parse(removedImages) : [];

    // Find the product
    const product = await Product.findById(req.params.id);
    if (!product) {
      return res.status(404).json({ message: "Product not found!" });
    }

    // Existing images
    let existingImages = product.image || [];
    let newImagesLinks = [];

    // Ensure files is always an array
    const filesArray = Array.isArray(files) ? files : [files];

    // Process new images
    for (const file of filesArray) {
      if (file && file.tempFilePath) { // Check if file has tempFilePath
        try {
          const result = await cloudinary.v2.uploader.upload(file.tempFilePath, {
            folder: "chemiNova/product",
          });
          newImagesLinks.push({
            public_id: result.public_id,
            url: result.secure_url,
          });
          // console.log("Uploaded image:", result.secure_url);
        } catch (uploadError) {
          console.error("Error uploading image:", uploadError);
          return res.status(500).json({ message: "Failed to upload image", error: uploadError.message });
        }
      }
    }

    // Remove images from Cloudinary and database
    // for (const public_id of removedImageIds) {
    //   try {
    //     await cloudinary.v2.uploader.destroy(public_id);
    //     // console.log("Deleted image from Cloudinary:", public_id);
    //   } catch (deleteError) {
    //     console.error("Error deleting image from Cloudinary:", deleteError);
    //     return res.status(500).json({ message: "Failed to delete image", error: deleteError.message });
    //   }
    // }

    // Filter out removed images
    const updatedImages = existingImages.filter(
      (img) => !removedImageIds.includes(img.public_id)
    );
    const allImages = [...updatedImages, ...newImagesLinks];

    // Update product
    product.image = allImages;
    await product.save();

    res.status(200).json({ message: "Product updated successfully!", images: allImages });
  } catch (error) {
    console.error(error); // Log error for debugging
    res.status(500).json({ message: "Server error!", error: error.message });
  }
};

////////////////////////////////////////////////////////////////////////////
//get All Product
export const getAllProductAdmin = async (req, res) => {
  try {
    const PAGE_SIZE = parseInt(req.query?.show || "10");
    const page = parseInt(req.query?.page - 1 || "0");

    // Create filter object based on query parameters
    let filter = {};

    if (req.query?.name) {
      filter.name = {
        $regex: new RegExp(req.query.name, "i"), // Case-insensitive search
      };
    }
    if (req.query?.category) {
      filter.category = mongoose.Types.ObjectId(req.query.category); // Ensure category is an ObjectId
    }
    if (req.query?.FeatureProduct) {
      filter.featured_Product = req.query.FeatureProduct === "true"; // Convert string to boolean
    }

    // Count total products matching the filter
    const total = await Product.countDocuments(filter);

    // Fetch products with pagination and sorting
    const products = await Product.find(filter)
      .populate({
        path: "category addedBy GST",
        select: "categoryName name tax",
      })
      .limit(PAGE_SIZE)
      .skip(PAGE_SIZE * page)
      .sort({
        featured_Product: -1,
        createdAt: -1,
      })
      .exec();

    return res.status(200).json({
      success: true,
      total_data: total,
      total_pages: Math.ceil(total / PAGE_SIZE),
      products, // Changed from `product` to `products` to match the response variable
    });
  } catch (error) {
    res.status(500).json({
      success: false,
      msg: error.message ? error.message : "Something went wrong!",
    });
  }
};

//get All Product User(website)
export const getAllProductUser = async (req, res) => {
  try {
    const PAGE_SIZE = parseInt(req.query?.show || "10");
    const page = parseInt(req.query?.page - 1 || "0");
    let obj = {};
    if (req.query?.name)
      obj.name = {
        $regex: new RegExp(req.query.name),
        $options: "i",
      };
    if (req.query?.category) obj.category = req.query.category;
    if (req.query?.FeatureProduct)
      obj.featured_Product = req.query.FeatureProduct;
    obj.product_Status = "Active";
    const total = await Product.countDocuments(obj);
    const product = await Product.find(obj)
      .populate({
        path: "category addedBy GST",
        select: "name categoryName tax",
      })
      .limit(PAGE_SIZE)
      .skip(PAGE_SIZE * page)
      // .sort("name")
      .sort({
        featured_Product: -1,
        createdAt: -1,
      })
      .exec();

    if (product) {
      return res.status(200).json({
        success: true,
        total_data: total,
        total_pages: Math.ceil(total / PAGE_SIZE),
        product,
      });
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      msg: error.message ? error.message : "Something went wrong!",
    });
  }
};
//Change Product status
export const ChangeProductStatus = async (req, res) => {
  try {
    const data = await Product.findById(req.params.id);
    if (data) {
      if (data?.product_Status === "Active") {
        let product = await Product.findByIdAndUpdate(
          req.params.id,
          { product_Status: "inActive" },
          { new: true } // Return the updated document
        );
        return res.status(200).json({
          success: true,
          msg: "Changed status inActive",
        });
      } else {
        let product = await Product.findByIdAndUpdate(
          req.params.id,
          { product_Status: "Active" },
          { new: true } // Return the updated document
        );
        return res.status(200).json({
          success: true,
          msg: "Changed status Active",
        });
      }
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      msg: error.message ? error.message : "Something went wrong!",
    });
  }
};
//Change Product status
export const ChangeFeatueProductStatus = async (req, res) => {
  try {
    const data = await Product.findById(req.params.id);
    if (data) {
      if (data?.featured_Product === false) {
        const totalFeatueProduct = await Product.countDocuments({
          featured_Product: true,
        });
        if (totalFeatueProduct > 2) {
          return res.status(400).json({
            success: false,
            msg: "Maximum 3 Featue Product can be..",
          });
        }
        let product = await Product.findByIdAndUpdate(
          req.params.id,
          { featured_Product: true },
          { new: true } // Return the updated document
        );
        return res.status(200).json({
          success: true,
          msg: "Changed status as Featue Product",
        });
      } else {
        let product = await Product.findByIdAndUpdate(
          req.params.id,
          { featured_Product: false },
          { new: true } // Return the updated document
        );
        return res.status(200).json({
          success: true,
          msg: "Changed status as not Featue Product",
        });
      }
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      msg: error.message ? error.message : "Something went wrong!",
    });
  }
};
//get One Product
export const getOneProduct = async (req, res) => {
  try {
    const data = await Product.findById(req.params.id).populate({
      path: "category addedBy GST",
      select: "name categoryName tax",
    });
    if (data) {
      return res.status(200).json({
        success: true,
        data,
      });
    }
  } catch (error) {
    // console.log(error)
    res.status(500).json({
      success: false,
      msg: error.message ? error.message : "Something went wrong!",
    });
  }
};

// get all product with device products first
export const getAllProductsDevicesFirst = async (req, res) => {
  try {
    // we want products with category name Device to be displayed first, so i have first found the products with category name Devices then made another request to find all products and filtered products with category devices , then merged both arrays so we get devices first then all other categories
    const categoryName = "Devices";
    // Find the category object by name first
    const category = await CategoryModel.findOne({ categoryName });
    if (!category) {
      throw new Error("Category not found");
    }
    // products with device category
    const deviceProducts = await Product.find({
      category: category._id,
    }).populate("category");

    // all products
    const allProducts = await Product.find()
      .populate({
        path: "category gst addedBy",
        select: "name categoryName tax",
      })
      .sort({
        createdAt: -1,
      });
    // filtering out products with device category
    const filteredProducts = allProducts.filter((ele) => {
      return ele.category?.categoryName !== categoryName;
    });

    // merging both deviceProcuts and filtered products
    const product = deviceProducts.concat(filteredProducts);
    if (product) {
      return res.status(200).json({
        success: true,
        product,
      });
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      msg: error.message ? error.message : "Something went wrong!",
    });
  }
};

// 3.update Product
// export const updateProduct = async (req, res) => {
//   const {
//     name,
//     description,
//     price,
//     category,
//     image,
//     gst_amount,
//     gst,
//     total_amount,
//   } = req.body;
//   console.log(gst_amount, gst, total_amount);

//   try {
//     // Prepare an array for the images
//     const jsonArray = JSON.parse(image);
//     const AllImages = jsonArray.map(({ public_id, url }) => ({
//       public_id,
//       url,
//     }));

//     if (req.files && req.files.newImages) {
//       const newuploadImages = Array.isArray(req.files.newImages)
//         ? req.files.newImages
//         : [req.files.newImages];

//       const imagesLinks = [];

//       for (let i = 0; i < newuploadImages.length; i++) {
//         const result = await cloudinary.v2.uploader.upload(
//           newuploadImages[i].tempFilePath,
//           {
//             folder: "chemiNova/product",
//           }
//         );

//         imagesLinks.push({
//           public_id: result.public_id,
//           url: result.secure_url,
//         });
//       }

//       // Combine the existing images and the newly uploaded images
//       const updatedImages = [...AllImages, ...imagesLinks];

//       // Perform the product update
//       const ModifyProduct = await Product.findOneAndUpdate(
//         { _id: req.params.id },
//         {
//           $set: {
//             name,
//             description,
//             price,
//             category,
//             image: updatedImages,
//             gst,
//             gst_amount,
//             total_amount,
//           },
//         },
//         { new: true }
//       );
//       return res.status(200).json({
//         success: true,
//         ModifyProduct,
//       });
//     } else {
//       const ModifyProduct = await Product.findOneAndUpdate(
//         { _id: req.params.id },
//         {
//           $set: {
//             name,
//             description,
//             price,
//             category,
//             image: AllImages,
//           },
//         },
//         { new: true }
//       );
//       return res.status(200).json({
//         success: true,
//         ModifyProduct,
//       });
//     }
//   } catch (error) {
//     res.status(500).json({
//       success: false,
//       msg: error.message ? error.message : "Something went wrong!",
//     });
//   }
// };
// export const updateProduct = async (req, res) => {
//   const {
//     name,
//     description,
//     price,
//     category,
//     image,
//     gst_amount,
//     product_Status,
//     gst,
//     total_amount,
//   } = req.body;
//   try {
//     // Prepare an array for the images
//     const jsonArray = JSON.parse(image);
//     const AllImages = jsonArray.map(({ public_id, url }) => ({
//       public_id,
//       url,
//     }));

//     let updatedImages = AllImages;

//     if (req.files && req.files.newImages) {
//       const newUploadImages = Array.isArray(req.files.newImages)
//         ? req.files.newImages
//         : [req.files.newImages];

//       const imagesLinks = [];

//       for (let i = 0; i < newUploadImages.length; i++) {
//         const result = await cloudinary.v2.uploader.upload(
//           newUploadImages[i].tempFilePath,
//           {
//             folder: "chemiNova/product",
//           }
//         );

//         imagesLinks.push({
//           public_id: result.public_id,
//           url: result.secure_url,
//         });
//       }

//       // Combine the existing images and the newly uploaded images
//       updatedImages = [...AllImages, ...imagesLinks];
//     }

//     // Perform the product update
//     const updatedProduct = await Product.findOneAndUpdate(
//       { _id: req.params.id },
//       {
//         $set: {
//           name,
//           description,
//           product_Status,
//           price,
//           category,
//           image: updatedImages,
//           gst,
//           gst_amount,
//           total_amount,
//         },
//       },
//       { new: true }
//     );

//     if (!updatedProduct) {
//       return res.status(404).json({ success: false, msg: "Product not found" });
//     }

//     return res.status(200).json({
//       success: true,
//       updatedProduct,
//     });
//   } catch (error) {
//     console.error("Error updating product:", error);
//     res.status(500).json({
//       success: false,
//       msg: error.message ? error.message : "Something went wrong!",
//     });
//   }
// };


export const deleteImageFromCloudinary = async (req, res) => {
  const { public_id } = req.params;

  // console.log("Received public_id:", public_id); // Debugging log

  // Ensure public_id is not empty
  if (!public_id) {
    return res.status(400).json({
      success: false,
      msg: "Public ID is required!",
    });
  }

  const decodedPublicId = decodeURIComponent(public_id);

  try {
    const response = await cloudinary.v2.uploader.destroy(decodedPublicId);

    if (response.result === "ok") {
      return res.status(200).json({
        success: true,
        msg: "Image Deleted Successfully!",
      });
    } else {
      return res.status(400).json({
        success: false,
        msg: "Image deletion failed!",
      });
    }
  } catch (error) {
    console.error("Error deleting image:", error); // Log error for debugging
    return res.status(500).json({
      success: false,
      msg: error.message || "Something went wrong!",
    });
  }
};

//delete one Product
export const deleteProduct = async (req, res) => {
  try {
    if (!req.params.id) {
      return res.status(400).json({
        success: false,
        message: "Please Provide Product ID!",
      });
    }
    const getProduct = await Product.findById(req.params.id);
    if (!getProduct) {
      return res.status(404).json({
        success: false,
        message: "Product not Found!",
      });
    }
    // Deleting Images From Cloudinary
    if (getProduct?.image?.length > 0) {
      for (let i = 0; i < getProduct.image.length; i++) {
        await cloudinary.v2.uploader.destroy(getProduct.image[i].public_id);
      }
    }

    //-------------------------//
    const product = await Product.findByIdAndDelete(req.params.id);
    if (!product) {
      return res.status(404).json({ message: "Product Not Found" });
    }
    await product.remove();
    res.status(200).json({
      success: true,
      message: "Product Deleted Successfully!!",
    });
  } catch (error) {
    res.status(500).json({
      success: false,
      msg: error.message ? error.message : "Something went wrong!",
    });
  }
};

export const getProductsByCategory = async (req, res) => {
  const { categoryName } = req.params; // Assuming category name is in the route
  // console.log(categoryName);

  try {
    // Find the category object by name first
    const category = await CategoryModel.findOne({ categoryName });

    if (!category) {
      throw new Error("Category not found");
    }
    const products = await Product.find({ category: category._id }).populate(
      "category"
    );
    // console.log(products);

    if (products && products.length > 0) {
      return res.status(200).json({
        success: true,
        products,
      });
    } else {
      return res.status(404).json({
        success: false,
        msg: "No products found for this category",
      });
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      msg: error.message ? error.message : "Something went wrong!",
    });
  }
};