"""
Cloudinary Upload Utility
=========================
Uploads files (audio, JSON) to Cloudinary, maintaining folder structure.

Used by:
- backend.text_to_speech.english_tts (upload MP3/WAV audio files)
- backend.text_to_speech.hindi_tts   (upload MP3 audio files)
- backend.summarization.english_summary (upload summarized JSON)
- backend.web_scraping.news_scrape    (upload scraped JSON)

Configuration (all required in .env):
    CLOUDINARY_CLOUD_NAME=your_cloud_name
    CLOUDINARY_API_KEY=your_api_key
    CLOUDINARY_API_SECRET=your_api_secret

Usage:
    from backend.utils.cloudinary_utils import upload_to_cloudinary

    result = upload_to_cloudinary(
        file_path="/path/to/audio.mp3",
        folder_path="audios/english/categories/sports/24_mar_10_37_pm",
        resource_type="video"  # Cloudinary uses "video" for audio files
    )
    if result:
        print(result['secure_url'])
"""

import os
import cloudinary
import cloudinary.uploader
from dotenv import load_dotenv
from pathlib import Path

load_dotenv()

cloudinary.config(
    cloud_name=os.getenv('CLOUDINARY_CLOUD_NAME'),
    api_key=os.getenv('CLOUDINARY_API_KEY'),
    api_secret=os.getenv('CLOUDINARY_API_SECRET'),
    secure=True
)


def upload_to_cloudinary(file_path: str, folder_path: str, resource_type: str = "auto"):
    """Upload a file to Cloudinary, preserving the specified folder layout.

    Args:
        file_path:     Absolute path to the local file.
        folder_path:   Cloudinary folder path (e.g. "audios/english/categories/sports").
        resource_type: One of "auto", "image", "video", "raw".
                       Use "video" for audio files, "raw" for JSON.

    Returns:
        dict with Cloudinary response (contains 'secure_url'), or None on failure.
    """
    try:
        if not os.path.exists(file_path):
            print(f"File not found: {file_path}")
            return None

        file_name = Path(file_path).stem
        folder_path = folder_path.strip("/")

        print(f"Uploading to Cloudinary: {folder_path}/{file_name}")

        response = cloudinary.uploader.upload(
            file_path,
            folder=folder_path,
            public_id=file_name,
            resource_type=resource_type,
            use_filename=True,
            unique_filename=False,
            overwrite=True
        )

        print(f"Upload successful: {response.get('secure_url')}")
        return response

    except Exception as e:
        print(f"Cloudinary upload failed: {str(e)}")
        return None