"""
Cloudinary client for file uploads
"""

import os
import logging
import cloudinary
import cloudinary.uploader
from typing import Union

logger = logging.getLogger(__name__)

class CloudinaryClient:
    """Handles file uploads to Cloudinary"""
    
    def __init__(self):
        # Configure Cloudinary
        cloudinary.config(
            cloud_name=os.environ.get("CLOUDINARY_CLOUD_NAME"),
            api_key=os.environ.get("CLOUDINARY_API_KEY"),
            api_secret=os.environ.get("CLOUDINARY_API_SECRET")
        )
        
        # Verify configuration
        if not all([
            os.environ.get("CLOUDINARY_CLOUD_NAME"),
            os.environ.get("CLOUDINARY_API_KEY"),
            os.environ.get("CLOUDINARY_API_SECRET")
        ]):
            logger.warning("⚠️ Cloudinary credentials not fully configured")
        else:
            logger.info("✅ Cloudinary client initialized")
    
    def upload_image_from_bytes(self, image_bytes: bytes, public_id: str) -> str:
        """Upload image from bytes to Cloudinary"""
        try:
            logger.info(f"☁️ Uploading image to Cloudinary: {public_id}")
            
            result = cloudinary.uploader.upload(
                image_bytes,
                public_id=f"text-to-3d/{public_id}",
                resource_type="image",
                unique_filename=True,
                overwrite=True,
                quality="auto"
            )
            
            url = result["secure_url"]
            logger.info(f"✅ Image uploaded: {url}")
            return url
            
        except Exception as e:
            logger.error(f"❌ Error uploading image to Cloudinary: {str(e)}")
            raise e
    
    def upload_image_from_path(self, file_path: str, public_id: str) -> str:
        """Upload image from file path to Cloudinary"""
        try:
            logger.info(f"☁️ Uploading image file to Cloudinary: {public_id}")
            
            result = cloudinary.uploader.upload(
                file_path,
                public_id=f"text-to-3d/{public_id}",
                resource_type="image",
                unique_filename=True,
                overwrite=True,
                quality="auto"
            )
            
            url = result["secure_url"]
            logger.info(f"✅ Image file uploaded: {url}")
            return url
            
        except Exception as e:
            logger.error(f"❌ Error uploading image file to Cloudinary: {str(e)}")
            raise e
    
    def upload_file(self, file_path: str, public_id: str) -> str:
        """Upload any file to Cloudinary"""
        try:
            logger.info(f"☁️ Uploading file to Cloudinary: {public_id}")
            
            # Check if file exists and is accessible
            if not os.path.exists(file_path):
                raise FileNotFoundError(f"File not found: {file_path}")
            
            file_size = os.path.getsize(file_path)
            logger.info(f"📁 File info - Path: {file_path}, Size: {file_size} bytes")
            
            # Verify file is readable
            with open(file_path, 'rb') as f:
                f.read(1)  # Try to read first byte
            
            result = cloudinary.uploader.upload(
                file_path,
                public_id=f"text-to-3d/{public_id}",
                resource_type="raw",  # For non-image files
                unique_filename=True,
                overwrite=True
            )
            
            url = result["secure_url"]
            logger.info(f"✅ File uploaded: {url}")
            return url
            
        except Exception as e:
            logger.error(f"❌ Error uploading file to Cloudinary: {str(e)}")
            logger.error(f"📁 Failed file path: {file_path}")
            raise e
    
    def delete_file(self, public_id: str, resource_type: str = "image") -> bool:
        """Delete file from Cloudinary"""
        try:
            logger.info(f"🗑️ Deleting file from Cloudinary: {public_id}")
            
            result = cloudinary.uploader.destroy(
                f"text-to-3d/{public_id}",
                resource_type=resource_type
            )
            
            success = result.get("result") == "ok"
            if success:
                logger.info(f"✅ File deleted: {public_id}")
            else:
                logger.warning(f"⚠️ File deletion may have failed: {public_id}")
            
            return success
            
        except Exception as e:
            logger.error(f"❌ Error deleting file from Cloudinary: {str(e)}")
            return False