const cloudinary = require("cloudinary").v2;

// Configure Cloudinary with environment variables
cloudinary.config({
  cloud_name: process.env.CLOUDINARY_CLOUD_NAME,
  api_key: process.env.CLOUDINARY_API_KEY,
  api_secret: process.env.CLOUDINARY_API_SECRET,
});

/**
 * Upload image buffer to Cloudinary
 * @param {Buffer} fileBuffer - Image file buffer from multer
 * @param {string} folder - Cloudinary folder path
 * @returns {Promise<Object>} Cloudinary upload result with url and public_id
 */
const uploadImage = (fileBuffer, folder = "adopt-a-street") => {
  return new Promise((resolve, reject) => {
    cloudinary.uploader
      .upload_stream(
        {
          folder: folder,
          resource_type: "image",
          transformation: [
            { width: 1000, height: 1000, crop: "limit" }, // Limit max dimensions
            { quality: "auto" }, // Auto quality optimization
            { fetch_format: "auto" }, // Auto format selection (WebP, etc.)
          ],
        },
        (error, result) => {
          if (error) {
            reject(error);
          } else {
            resolve({
              url: result.secure_url,
              publicId: result.public_id,
            });
          }
        },
      )
      .end(fileBuffer);
  });
};

/**
 * Delete image from Cloudinary
 * @param {string} publicId - Cloudinary public_id of the image
 * @returns {Promise<Object>} Cloudinary deletion result
 */
const deleteImage = async (publicId) => {
  try {
    const result = await cloudinary.uploader.destroy(publicId);
    return result;
  } catch (error) {
    console.error("Error deleting image from Cloudinary:", error);
    throw error;
  }
};

module.exports = {
  uploadImage,
  deleteImage,
  cloudinary,
};