from firebase_admin import firestore
import os
from ..core.config import settings
from ..core.firebase import db
from huggingface_hub import HfApi, create_repo
import tempfile
from .video_processing.hf_upload import HFUploader
from .video_processing.compression import compress_video
from .video_processing.scene_detection import SceneDetector
from .video_processing.scene_classifier import SceneClassifier
from .video_processing.clip_generator import ClipGenerator
from .video_processing.scrape_hf import extract_video_urls
import time

async def process_video(video_uuid: str, content: bytes, user_id: str, sport_id: str):
    temp_files = []
    try:
        video_ref = db.collection('videos').document(video_uuid)
        video_data = video_ref.get().to_dict()
        
        hf_uploader = HFUploader()
        sport_id = video_data['sport_id']
        
        # Ensure folder structure exists
        hf_uploader.ensure_folder_structure(sport_id)
            
        # Create temp files
        temp_raw_file = tempfile.NamedTemporaryFile(suffix='.mp4', delete=False)
        temp_compressed_file = tempfile.NamedTemporaryFile(suffix='.mp4', delete=False)
        temp_files.extend([temp_raw_file.name, temp_compressed_file.name])
        
        # Write raw video and close file
        temp_raw_file.write(content)
        temp_raw_file.close()
        
        # Compress video
        compress_video(temp_raw_file.name, temp_compressed_file.name)
        temp_compressed_file.close()

        # Detect scenes
        scene_detector = SceneDetector()
        scene_classifier = SceneClassifier()
        scenes_data = scene_detector.detect_scenes(temp_compressed_file.name)
        
        # Classify each scene
        for scene in scenes_data["scenes"]:
            classification = scene_classifier.classify_scene(
                temp_compressed_file.name, 
                scene
            )
            scene["recognized_sport"] = classification["recognized_sport"]
            scene["confidence"] = classification["confidence"]

        # Generate clips
        clip_generator = ClipGenerator()
        generated_clips = clip_generator.generate_clips(
            temp_compressed_file.name,
            scenes_data["scenes"],
            sport_id
        )

        # Create and upload clips
        final_clips_data = []
        user_ref = db.collection("users").document(user_id)
        user_data = user_ref.get().to_dict() or {"clips": []}

        if "clips" not in user_data:
            user_data["clips"] = []

        # Upload both versions first
        raw_path = f"{sport_id}/raw/{video_uuid}.mp4"
        compressed_path = f"{sport_id}/compressed/{video_uuid}.mp4"
        
        hf_uploader.upload_video(temp_raw_file.name, raw_path)
        hf_uploader.upload_video(temp_compressed_file.name, compressed_path)

        # Attendre que HF indexe les fichiers
        time.sleep(3)

        # Construire l'URL de base pour le scraping
        base_viewer_url = f"https://huggingface.co/datasets/{hf_uploader.repo_id}/viewer/default/files"
        
        # Récupérer toutes les URLs
        max_retries = 3
        raw_url = None
        compressed_url = None
        
        for attempt in range(max_retries):
            try:
                urls = extract_video_urls(base_viewer_url)
                
                # Chercher les URLs correspondantes
                raw_url = next((url for url in urls if raw_path in url), None)
                compressed_url = next((url for url in urls if compressed_path in url), None)
                
                if raw_url and compressed_url:
                    print(f"[SUCCESS] URLs trouvées à la tentative {attempt + 1}")
                    break
                    
                print(f"[RETRY] Tentative {attempt + 1}/{max_retries}")
                time.sleep(2)
            except Exception as e:
                print(f"[ERROR] Tentative {attempt + 1} échouée: {str(e)}")
                if attempt == max_retries - 1:
                    raise e
                time.sleep(2)

        # Process clips
        for clip_data in generated_clips:
            clip_number = clip_data["clip_number"]
            clip_file_path = clip_data["file_path"]
            temp_files.append(clip_file_path)
            
            clip_path = f"{sport_id}/clips/{video_uuid}_clip_{clip_number}.mp4"
            hf_uploader.upload_video(clip_file_path, clip_path)
            
            # Attendre et scraper l'URL du clip
            time.sleep(2)
            clip_url = None
            
            for attempt in range(max_retries):
                try:
                    urls = extract_video_urls(base_viewer_url)
                    clip_url = next((url for url in urls if clip_path in url), None)
                    if clip_url:
                        break
                    time.sleep(2)
                except Exception:
                    if attempt == max_retries - 1:
                        raise
                    time.sleep(2)
            
            if clip_url:
                final_clips_data.append({
                    "clip_id": f"{video_uuid}_clip_{clip_number}",
                    "video_uuid": video_uuid,
                    "url": clip_url,
                    "duration": clip_data["duration"],
                    "confidence": clip_data["confidence"],
                    "segments": clip_data["segments"]
                })

                clip_ref = db.collection("clips").document(f"{video_uuid}_clip_{clip_number}")
                clip_ref.set({
                    "clip_id": f"{video_uuid}_clip_{clip_number}",
                    "sport_id": sport_id,
                    "url": clip_url,
                    "duration": clip_data["duration"]
                })

        # Update user data
        user_ref.set(user_data)

        # Update video data with scraped URLs
        update_data = {
            "scenes": scenes_data,
            "clips": final_clips_data,
            "clips_count": len(final_clips_data),
            "status": "ready",
            "last_updated": firestore.SERVER_TIMESTAMP
        }

        if raw_url:
            update_data["raw_video_url"] = raw_url
        if compressed_url:
            update_data["compressed_video_url"] = compressed_url

        video_ref.update(update_data)
                
    except Exception as e:
        print(f"Erreur lors du traitement de la vidéo {video_uuid}: {str(e)}")
        video_ref.update({"status": "error", "error": str(e)})
        
    finally:
        # Clean up temp files
        for temp_file in temp_files:
            try:
                if os.path.exists(temp_file):
                    os.unlink(temp_file)
            except Exception as e:
                print(f"[WARNING] Erreur lors de la suppression du fichier temporaire {temp_file}: {str(e)}")