import mongoose from "mongoose";
import { BrandModel } from "./BrandsModel.js";
import cloudinary from "../../Utils/cloudinary.js";

// Get all Brands
export const getBrands = async (req, res) => {
  try {
    // const PAGE_SIZE = parseInt(req.query.show) || 10;
    // const page = parseInt(req.query.page) || 1;
    // const skip = (page - 1) * PAGE_SIZE;
    let filter = {};

    // Search by brandName if provided
    if (req.query.brandName) {
      filter.brandName = {
        $regex: new RegExp(req.query.brandName, "i"), // Case-insensitive search
      };
    }

    // Get total number of brands matching the filter
    const total = await BrandModel.countDocuments(filter);

    // Fetch brands with pagination and filtering
    const brands = await BrandModel.find(filter)
      // .limit(PAGE_SIZE)
      // .skip(skip)
      .sort({ createdAt: -1 })
      .exec();

    // Return the paginated and filtered brands list
    res.status(200).json({
      success: true,
      total_data: total,
      // total_pages: Math.ceil(total / PAGE_SIZE),
      // current_page: page,
      brands,
    });
  } catch (error) {
    // Handle server error
    res.status(500).json({
      success: false,
      message: error.message || "Something went wrong",
    });
  }
};
// Add new Brand
// export const addBrand = async (req, res) => {
//   const { brandName } = req.body;

//   if (!req?.user) {
//     return res.status(400).json({ message: "Please login!" });
//   }

//   try {
//     if (!mongoose.Types.ObjectId.isValid(req.user._id)) {
//       return res.status(400).json({ message: "Please login again." });
//     }

//     if (!brandName) {
//       return res.status(400).json({ message: "Please provide a brand name" });
//     }

//     const brand = await BrandModel.create({
//       brandName,
//       addedBy: req.user._id,
//     });

//     return res.status(201).json({ success: true, brand, message: "Brand added successfully" });
//   } catch (error) {
//     res.status(500).json({
//       success: false,
//       message: error.message || "Something went wrong",
//     });
//   }
// };

// // Update Brand
// export const updateBrand = async (req, res) => {
//   const { _id } = req.params;
//   const { brandName } = req.body;

//   if (!req?.user) {
//     return res.status(400).json({ message: "Please login!" });
//   }

//   if (!mongoose.Types.ObjectId.isValid(_id)) {
//     return res.status(404).json({ message: "Invalid brand ID" });
//   }

//   try {
//     const updatedBrand = await BrandModel.findByIdAndUpdate(
//       _id,
//       { brandName },
//       { new: true, runValidators: true }
//     );

//     if (!updatedBrand) {
//       return res.status(404).json({ message: "Brand not found" });
//     }

//     res.status(200).json({ success: true, updatedBrand, message: "Brand updated successfully" });
//   } catch (error) {
//     res.status(500).json({
//       success: false,
//       message: error.message || "Something went wrong",
//     });
//   }
// };

// // Delete Brand
// export const deleteBrand = async (req, res) => {
//   const { _id } = req.params;

//   if (!req?.user) {
//     return res.status(400).json({ message: "Please login!" });
//   }

//   if (!mongoose.Types.ObjectId.isValid(_id)) {
//     return res.status(404).json({ message: "Invalid brand ID" });
//   }

//   try {
//     const deletedBrand = await BrandModel.findByIdAndDelete(_id);

//     if (!deletedBrand) {
//       return res.status(404).json({ message: "Brand not found" });
//     }

//     res.status(200).json({ success: true, deletedBrand, message: "Brand deleted successfully" });
//   } catch (error) {
//     res.status(500).json({
//       success: false,
//       message: error.message || "Something went wrong",
//     });
//   }
// };

export const addBrand = async (req, res) => {
  const { brandName } = req.body;
  const file = req.files?.image; // Assuming image is sent as a file

  if (!req?.user) {
    return res.status(400).json({ message: "Please login!" });
  }

  try {
    if (!mongoose.Types.ObjectId.isValid(req.user._id)) {
      return res.status(400).json({ message: "Please login again." });
    }

    if (!brandName) {
      return res.status(400).json({ message: "Please provide a brand name" });
    }

    let image = {};
    if (file) {
      try {
        const result = await cloudinary.v2.uploader.upload(file.tempFilePath, {
          folder: "chemiNova/brand",
        });
        image = {
          public_id: result.public_id,
          url: result.secure_url,
        };
      } catch (uploadError) {
        console.error("Error uploading image:", uploadError);
        return res.status(500).json({
          message: "Failed to upload image",
          error: uploadError.message,
        });
      }
    }

    const brand = await BrandModel.create({
      brandName,
      image: image ? [image] : [],
      addedBy: req.user._id,
    });

    return res
      .status(201)
      .json({ success: true, brand, message: "Brand added successfully" });
  } catch (error) {
    res.status(500).json({
      success: false,
      message: error.message || "Something went wrong",
    });
  }
};

export const updateBrand = async (req, res) => {
  const { _id } = req.params;
  const { brandName } = req.body;
  const file = req.files?.image;

  if (!req?.user) {
    return res.status(400).json({ message: "Please login!" });
  }

  if (!mongoose.Types.ObjectId.isValid(_id)) {
    return res.status(404).json({ message: "Invalid brand ID" });
  }

  try {
    const brand = await BrandModel.findById(_id);
    if (!brand) {
      return res.status(404).json({ message: "Brand not found" });
    }

    let image = brand.image;
    if (file) {
      if (image.length > 0) {
        await cloudinary.v2.uploader.destroy(image[0].public_id);
      }
      const result = await cloudinary.v2.uploader.upload(file.tempFilePath, {
        folder: "chemiNova/brand",
      });
      image = [{ public_id: result.public_id, url: result.secure_url }];
    }

    const updatedBrand = await BrandModel.findByIdAndUpdate(
      _id,
      { brandName, image },
      { new: true, runValidators: true }
    );

    res
      .status(200)
      .json({
        success: true,
        updatedBrand,
        message: "Brand updated successfully",
      });
  } catch (error) {
    res
      .status(500)
      .json({
        success: false,
        message: error.message || "Something went wrong",
      });
  }
};

export const deleteBrand = async (req, res) => {
  const { _id } = req.params;

  if (!req?.user) {
    return res.status(400).json({ message: "Please login!" });
  }

  if (!mongoose.Types.ObjectId.isValid(_id)) {
    return res.status(404).json({ message: "Invalid brand ID" });
  }

  try {
    const brand = await BrandModel.findById(_id);
    if (!brand) {
      return res.status(404).json({ message: "Brand not found" });
    }

    if (brand.image.length > 0) {
      await cloudinary.v2.uploader.destroy(brand.image[0].public_id);
    }

    await BrandModel.findByIdAndDelete(_id);
    res
      .status(200)
      .json({ success: true, message: "Brand deleted successfully" });
  } catch (error) {
    res
      .status(500)
      .json({
        success: false,
        message: error.message || "Something went wrong",
      });
  }
};

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

  // 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 {
    // Step 1: Delete image from Cloudinary
    const response = await cloudinary.v2.uploader.destroy(decodedPublicId);

    if (response.result === "ok") {
      // Step 2: Find the brand containing the image and update the database
      const brand = await BrandModel.findOne({
        "image.public_id": decodedPublicId,
      });

      if (!brand) {
        return res.status(404).json({
          success: false,
          msg: "Brand not found with the given image!",
        });
      }

      // Remove the image from the brand's image array
      brand.image = brand.image.filter(
        (img) => img.public_id !== decodedPublicId
      );

      // Step 3: Save the updated brand document
      await brand.save();

      return res.status(200).json({
        success: true,
        msg: "Image Deleted Successfully and removed from database!",
      });
    } else {
      return res.status(400).json({
        success: false,
        msg: "Image deletion failed in Cloudinary!",
      });
    }
  } 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!",
    });
  }
};