import gradio as gr
import requests
import re
import os
import zipfile
import tempfile
from urllib.parse import urljoin

def process_url(url):
    try:
        headers = {
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',
            'Referer': 'https://www.radiofrance.fr/'
        }
        response = requests.get(url, headers=headers)
        response.raise_for_status()
    except Exception as e:
        return None, f"Erreur de connexion : {str(e)}"

    # Nouvelle méthode de détection des MP3
    mp3_links = []
    
    # 1. Recherche dans les balises script
    scripts = re.findall(r'<script.*?>(.*?)</script>', response.text, re.DOTALL)
    for script in scripts:
        matches = re.findall(r'(https://[^\s"\']+?\.mp3)', script)
        mp3_links.extend(matches)

    # 2. Recherche dans les attributs HTML
    html_matches = re.findall(r'(?:href|src|rl|contentUrl)\s*=\s*["\'](.*?\.mp3.*?)["\']', response.text)
    mp3_links.extend([urljoin(url, m.split('";')[0]) for m in html_matches])

    # 3. Suppression des paramètres et dédoublonnage
    clean_links = []
    seen = set()
    for link in mp3_links:
        clean = link.split('?')[0].split('";')[0]
        if clean not in seen:
            seen.add(clean)
            clean_links.append(clean)

    if not clean_links:
        return None, "Aucun MP3 trouvé - Essayez avec l'URL complète d'une série"

    # Téléchargement
    temp_dir = tempfile.mkdtemp()
    filenames = []
    
    for idx, mp3_url in enumerate(clean_links, 1):
        try:
            filename = f"{idx:02d}_{os.path.basename(mp3_url)}"
            filepath = os.path.join(temp_dir, filename)
            
            with requests.get(mp3_url, headers=headers, stream=True, timeout=10) as r:
                r.raise_for_status()
                with open(filepath, 'wb') as f:
                    for chunk in r.iter_content(chunk_size=8192):
                        f.write(chunk)
            filenames.append(filepath)
        except Exception as e:
            continue

    if not filenames:
        return None, "Tous les téléchargements ont échoué"

    # Création du ZIP
    zip_path = os.path.join(temp_dir, 'radiofrance_podcast.zip')
    with zipfile.ZipFile(zip_path, 'w') as zipf:
        for file in filenames:
            zipf.write(file, arcname=os.path.basename(file))

    return zip_path, None

def download_podcast(url):
    zip_path, error = process_url(url)
    if error:
        raise gr.Error(error)
    return zip_path

with gr.Blocks(title="RadioFrance Podcaster") as app:
    gr.Markdown("## 🎧 Téléchargement de podcasts Radio France")
    with gr.Row():
        url_input = gr.Textbox(
            label="URL de la série podcast",
            placeholder="Ex: https://www.radiofrance.fr/.../mon-podcast",
            max_lines=1
        )
    btn = gr.Button("Télécharger les épisodes", variant="primary")
    output = gr.File(label="Fichier ZIP contenant les MP3")
    
    examples = gr.Examples(
        examples=[[
            "https://www.radiofrance.fr/franceculture/podcasts/serie-le-secret-de-la-licorne-les-aventures-de-tintin"
        ]],
        inputs=[url_input],
        label="Exemple fonctionnel"
    )

    btn.click(
        fn=download_podcast,
        inputs=url_input,
        outputs=output,
        api_name="download"
    )

app.launch(show_error=True, share=False)