from flask import Flask, request, jsonify
from flask_cors import CORS
import subprocess
import json
import re
import os

app = Flask(__name__)
CORS(app)

import sys # Ajoute cet import en haut de ton fichier

@app.route("/run-extraction", methods=["POST"])
def run_extraction():
    data = request.json
    inputs = data.get("inputs", {})

    script_dir = os.path.dirname(os.path.abspath(__file__))
    main_path = os.path.join(script_dir, "main.py")

    # 1. Mise à jour du fichier main.py
    try:
        with open(main_path, "r", encoding="utf-8") as f:
            content = f.read()

        # Nettoyage de l'ancien bloc INPUTS (ton regex/logique actuelle)
        start_idx = content.find("INPUTS = {")
        if start_idx != -1:
            brace_count = 0
            end_idx = start_idx
            for i, char in enumerate(content[start_idx:]):
                if char == "{": brace_count += 1
                elif char == "}":
                    brace_count -= 1
                    if brace_count == 0:
                        end_idx = start_idx + i + 1
                        break
            content = content[:start_idx] + content[end_idx:].lstrip()

        # Insertion des nouveaux inputs
        new_inputs_str = f"INPUTS = {json.dumps(inputs, indent=4, ensure_ascii=False)}\n\n"
        content = new_inputs_str + content

        with open(main_path, "w", encoding="utf-8") as f:
            f.write(content)
            f.flush() # Force l'écriture sur le disque
            os.fsync(f.fileno()) # Sécurité supplémentaire pour Linux/Mac
            
    except Exception as e:
        return jsonify({"stdout": "", "stderr": f"Erreur écriture : {str(e)}", "returncode": -1})

    # 2. Exécution du script
    try:
        # Utilisation de sys.executable pour éviter les erreurs de chemin Python
        result = subprocess.run(
            [sys.executable, main_path], 
            capture_output=True,
            text=True,
            cwd=script_dir,
            timeout=60
        )
        
        return jsonify({
            "stdout": result.stdout,
            "stderr": result.stderr,
            "returncode": result.returncode
        })

    except subprocess.TimeoutExpired:
        return jsonify({"stdout": "", "stderr": "Timeout dépassé (60s)", "returncode": -1})
    except Exception as e:
        return jsonify({"stdout": "", "stderr": f"Erreur exécution : {str(e)}", "returncode": -1})