print("=============================================")
print("===   DÉMARRAGE DE MARKITDOWN WEBSERVER   ===")
print("=============================================")
"""
Serveur Flask pour MarkitDowne Local WebApp.

Routes API :
- GET  /          → Page principale
- POST /upload    → Upload et conversion d'un fichier
- GET  /history   → Liste de l'historique
- GET  /download/<id> → Téléchargement du .md
- POST /copy/<id> → Copie dans le presse-papier (retourne le texte)
- POST /clear-history → Vide l'historique
"""

import os
import uuid
import socket
from flask import (
    Flask,
    render_template,
    request,
    jsonify,
    send_file,
    after_this_request,
)

from converter import convert
from history import add_entry, get_all, get_entry, clear

app = Flask(__name__)

# 1 Go max (augmenté pour supporter de gros dossiers)
app.config["MAX_CONTENT_LENGTH"] = 1024 * 1024 * 1024

UPLOAD_FOLDER = os.path.join(os.path.dirname(__file__), "_uploads")
os.makedirs(UPLOAD_FOLDER, exist_ok=True)

# Changement du port pour 5001 afin d'éviter tout conflit avec le calculateur de piscine
PORT = int(os.environ.get("PORT", 5001))


@app.route("/")
def index():
    """Page principale."""
    return render_template("index.html")


@app.route("/upload", methods=["POST"])
def upload():
    """
    Upload et conversion d'un ou plusieurs fichiers (ou dossiers).
    Retourne le Markdown généré pour chaque fichier.
    """
    print("\n--- DEBUG: Received /upload request ---")
    
    files = request.files.getlist("files")
    paths = request.form.getlist("paths")
    
    print(f"DEBUG: Received {len(files)} files.")
    print(f"DEBUG: Received {len(paths)} paths: {paths}")

    if not files or not paths:
        print("DEBUG: No files or paths received. Aborting.")
        return jsonify({"success": False, "error": "Aucun fichier ou chemin reçu."}), 400

    if len(files) != len(paths):
        print("DEBUG: Mismatch between number of files and paths. Aborting.")
        return jsonify({"success": False, "error": "Incohérence entre les fichiers et les chemins."}), 400

    results = []
    errors = []

    for i, file in enumerate(files):
        filename = paths[i]
        print(f"\nDEBUG: Processing file #{i+1}: {filename}")
        
        if not filename:
            print("DEBUG: Skipping file with empty filename.")
            continue
            
        base_name = os.path.basename(filename.replace("\\", "/"))
        temp_filename = f"{uuid.uuid4().hex}_{base_name}"
        temp_path = os.path.join(UPLOAD_FOLDER, temp_filename)
        
        try:
            file.save(temp_path)
            print(f"DEBUG: Saved to temporary file: {temp_path}")

            markdown = convert(temp_path)
            print("DEBUG: Conversion successful.")
            
            entry = add_entry(filename, markdown)
            results.append({
                "id": entry["id"],
                "filename": filename,
                "markdown": markdown,
                "size": entry["size"],
                "date": entry["date"],
            })
        except Exception as e:
            print(f"DEBUG: An error occurred during conversion: {e}")
            errors.append({"filename": filename, "error": str(e)})
        finally:
            if os.path.exists(temp_path):
                try:
                    os.remove(temp_path)
                    print(f"DEBUG: Removed temporary file: {temp_path}")
                except Exception as e:
                    print(f"DEBUG: Failed to remove temporary file: {e}")

    print(f"--- DEBUG: Finished processing. Results: {len(results)}, Errors: {len(errors)} ---")
    return jsonify({
        "success": True,
        "results": results,
        "errors": errors,
    })


@app.route("/history")
def history():
    """Retourne l'historique des conversions."""
    return jsonify({"success": True, "data": get_all()})


@app.route("/download/<entry_id>")
def download(entry_id):
    """Télécharge un fichier .md depuis l'historique."""
    entry = get_entry(entry_id)
    if not entry:
        return jsonify({"success": False, "error": "Entrée introuvable."}), 404

    original_filename = entry["filename"].replace("\\", "/")
    base = os.path.splitext(os.path.basename(original_filename))[0]
    md_filename = f"{base}.md"
    
    temp_md_filename = f"{uuid.uuid4().hex}_{md_filename}"
    md_path = os.path.join(UPLOAD_FOLDER, temp_md_filename)

    with open(md_path, "w", encoding="utf-8") as f:
        f.write(entry["markdown"])

    @after_this_request
    def cleanup(response):
        if os.path.exists(md_path):
            try:
                os.remove(md_path)
            except Exception:
                pass
        return response

    return send_file(
        md_path,
        as_attachment=True,
        download_name=md_filename,
        mimetype="text/markdown",
    )


@app.route("/copy/<entry_id>")
def copy(entry_id):
    """Retourne le contenu Markdown pour copie dans le presse-papier."""
    entry = get_entry(entry_id)
    if not entry:
        return jsonify({"success": False, "error": "Entrée introuvable."}), 404
    return jsonify({"success": True, "markdown": entry["markdown"]})


@app.route("/clear-history", methods=["POST"])
def clear_history():
    """Vide l'historique."""
    clear()
    return jsonify({"success": True})

# Ce bloc n'est exécuté que si on lance le script directement (ex: `python app.py`)
# Il ne sera pas utilisé par Gunicorn sur Hugging Face.
if __name__ == "__main__":
    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
        if s.connect_ex(('0.0.0.0', PORT)) == 0:
            print(f"ERREUR: Le port {PORT} est déjà utilisé.")
            print("  - Avez-vous une autre application (peut-être un autre projet) qui tourne ?")
            print("  - Essayez de l'arrêter et de relancer.")
            exit(1)

    print(f"\n  MarkitDown WebApp lancée sur http://127.0.0.1:{PORT}\n")
    # On écoute sur 0.0.0.0 pour être compatible avec les conteneurs Docker
    app.run(host="0.0.0.0", port=PORT, debug=False)