app.py

from flask import Flask, render_template, request, jsonify
import google.generativeai as genai
import os
from PIL import Image
import tempfile
import PIL.Image

app = Flask(__name__)

# Configuration de l'API Gemini
token = os.environ.get("TOKEN")
genai.configure(api_key=token)

generation_config = {
    "temperature": 1,
    "max_output_tokens": 8192,
}

safety_settings = [
    {"category": "HARM_CATEGORY_HARASSMENT", "threshold": "BLOCK_NONE"},
    {"category": "HARM_CATEGORY_HATE_SPEECH", "threshold": "BLOCK_NONE"},
    {"category": "HARM_CATEGORY_SEXUALLY_EXPLICIT", "threshold": "BLOCK_NONE"},
    {"category": "HARM_CATEGORY_DANGEROUS_CONTENT", "threshold": "BLOCK_NONE"},
]


@app.route('/')
def generale():
    return render_template("generale.html")




def upload_and_process_file(file_path):
    """Upload et traite un fichier avec l'API Gemini avec gestion des erreurs améliorée"""
    max_retries = 3
    retry_delay = 2  # secondes
    
    for attempt in range(max_retries):
        try:
            print(f"Tentative d'upload {attempt + 1}/{max_retries} pour {file_path}")
            
            # Vérification du fichier
            if not os.path.exists(file_path):
                raise FileNotFoundError(f"Le fichier {file_path} n'existe pas")
                
            file_size = os.path.getsize(file_path)
            if file_size == 0:
                raise ValueError(f"Le fichier {file_path} est vide")
                
            # Upload du fichier
            uploaded_file = genai.upload_file(path=file_path)
            print(f"Upload réussi: {uploaded_file.uri}")

            # Attente du traitement
            timeout = 300  # 5 minutes
            start_time = time.time()
            
            while uploaded_file.state.name == "PROCESSING":
                if time.time() - start_time > timeout:
                    raise TimeoutError("Timeout pendant le traitement du fichier")
                
                print(f"En attente du traitement... Temps écoulé: {int(time.time() - start_time)}s")
                time.sleep(10)
                uploaded_file = genai.get_file(uploaded_file.name)

            if uploaded_file.state.name == "FAILED":
                raise ValueError(f"Échec du traitement: {uploaded_file.state.name}")
                
            print(f"Traitement terminé avec succès: {uploaded_file.uri}")
            return uploaded_file

        except ssl.SSLError as e:
            print(f"Erreur SSL lors de l'upload (tentative {attempt + 1}): {e}")
            if attempt < max_retries - 1:
                time.sleep(retry_delay * (attempt + 1))
            else:
                raise
                
        except Exception as e:
            print(f"Erreur lors de l'upload (tentative {attempt + 1}): {e}")
            if attempt < max_retries - 1:
                time.sleep(retry_delay * (attempt + 1))
            else:
                raise
                
                

def is_youtube_url(url):
    """Vérifie si l'URL est une URL YouTube"""
    parsed = urlparse(url)
    return any(domain in parsed.netloc for domain in ['youtube.com', 'youtu.be'])

def download_youtube_video(url):
    """Télécharge une vidéo YouTube avec gestion des erreurs améliorée"""
    try:
        with tempfile.TemporaryDirectory() as temp_dir:
            ydl_opts = {
                'format': 'best[filesize<50M]',  # Limite la taille du fichier
                'outtmpl': os.path.join(temp_dir, '%(title)s.%(ext)s'),
                'quiet': True,
                'no_warnings': True,
                'extract_flat': False
            }
            
            with yt_dlp.YoutubeDL(ydl_opts) as ydl:
                print(f"Téléchargement de la vidéo: {url}")
                info = ydl.extract_info(url, download=True)
                video_path = os.path.join(temp_dir, ydl.prepare_filename(info))
                
                if not os.path.exists(video_path):
                    raise FileNotFoundError(f"La vidéo n'a pas été téléchargée correctement: {video_path}")
                
                # Copie vers un fichier temporaire permanent
                temp_file = tempfile.NamedTemporaryFile(delete=False, suffix=os.path.splitext(video_path)[1])
                with open(video_path, 'rb') as f:
                    temp_file.write(f.read())
                
                print(f"Vidéo téléchargée avec succès: {temp_file.name}")
                return temp_file.name
                
    except Exception as e:
        print(f"Erreur lors du téléchargement de la vidéo: {e}")
        return None

def telecharger_pdf(url):
    """Télécharge un PDF et retourne le chemin du fichier"""
    try:
        response = requests.get(url)
        response.raise_for_status()

        with tempfile.NamedTemporaryFile(delete=False, suffix='.pdf') as temp_file:
            temp_file.write(response.content)
            return temp_file.name
    except Exception as e:
        print(f"Erreur lors du téléchargement du PDF : {e}")
        return None

def allowed_file(filename):
    """Vérifie si l'extension du fichier est autorisée"""
    ALLOWED_EXTENSIONS = {'pdf', 'png', 'jpg', 'jpeg', 'gif', 'mp4', 'mov', 'avi'}
    return '.' in filename and filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS

@app.route('/submit', methods=['POST'])
def submit_question():
    question = request.form.get('question')
    urls = request.form.getlist('urls')
    files = request.files.getlist('files')
    
    print("URLs reçues:", urls)
    content = [question]
    temp_files = []
    
    try:
        # Traitement des fichiers uploadés
        for file in files:
            if file and allowed_file(file.filename):
                with tempfile.NamedTemporaryFile(delete=False, suffix=os.path.splitext(file.filename)[1]) as temp_file:
                    file.save(temp_file.name)
                    temp_files.append(temp_file.name)
                    if file.filename.lower().endswith(('.png', '.jpg', '.jpeg', '.gif')):
                        content.append(PIL.Image.open(temp_file.name))
                    else:
                        uploaded_file = upload_and_process_file(temp_file.name)
                        content.append(uploaded_file)

        # Traitement des URLs
        for url in urls:
            print(f"Traitement de l'URL : {url}")
            if is_youtube_url(url):
                video_path = download_youtube_video(url)
                if video_path:
                    temp_files.append(video_path)
                    uploaded_file = upload_and_process_file(video_path)
                    content.append(uploaded_file)
            elif url.lower().endswith('.pdf'):
                pdf_path = telecharger_pdf(url)
                if pdf_path:
                    temp_files.append(pdf_path)
                    uploaded_file = upload_and_process_file(pdf_path)
                    content.append(uploaded_file)

       
       

        # Génération de contenu avec Gemini
        model = genai.GenerativeModel(
            model_name="models/gemini-2.0-flash-exp",
            safety_settings=safety_settings,
            system_instruction="Tu es un assistant intelligent. ton but est d'assister au mieux que tu peux. tu as été créé par Aenir et tu t'appelles Mariam."
        )
        response = model.generate_content(content, request_options={"timeout": 600})
        return jsonify({"response": response.text})

    except Exception as e:
        return jsonify({"error": str(e)}), 500
    finally:
        # Nettoyage des fichiers temporaires
        for temp_file in temp_files:
            try:
                os.unlink(temp_file)
            except Exception as e:
                print(f"Erreur lors de la suppression du fichier temporaire {temp_file}: {e}")