from flask import Flask, jsonify, abort, render_template, send_from_directory
import pandas as pd
import json
import zipfile
import os
import pickle
import joblib
from io import TextIOWrapper


app = Flask(__name__)
FILES_DIR = '/mnt/external'


@app.route('/')
def home():
    # Liste les fichiers dans le répertoire monté
    files = os.listdir('/mnt/external')

    # Filtre pour obtenir uniquement les fichiers (pas les dossiers)
    files = [f for f in files if os.path.isfile(os.path.join('/mnt/external', f))]

    # Retourne le template avec la liste des fichiers
    return render_template('index.html', files=files)


@app.route('/process', methods=['POST'])
def process():
    # Traitez ici les données envoyées par l'utilisateur
    return "Données traitées !"


@app.route('/read_json/<path:filename>')
def read_json(filename):
    full_path = os.path.join(FILES_DIR, filename)

    if filename.endswith('.json'):
        with open(full_path) as f:
            return f.read(), 200, {'Content-Type': 'application/json'}

    if filename.endswith('.pkl'):
        try:
            data = joblib.load(full_path)
            if isinstance(data, pd.DataFrame):
                return data.to_json(orient='split'), 200, {'Content-Type': 'application/json'}
            if isinstance(data, dict):
                df = pd.DataFrame.from_dict(data)
                return df.to_json(orient='split'), 200, {'Content-Type': 'application/json'}
            if isinstance(data, list):
                df = pd.DataFrame(data)
                return df.to_json(orient='split'), 200, {'Content-Type': 'application/json'}
            return json.dumps({"error": f"Type {type(data)} non géré."}), 200
        except Exception as e:
            return json.dumps({"error": str(e)}), 500

    elif filename.endswith('.zip'):
        try:
            with zipfile.ZipFile(full_path) as z:
                zip_contents = {}
                for name in z.namelist():
                    if name.endswith('.json'):
                        with z.open(name) as f:
                            zip_contents[name] = json.load(f)
                    elif name.endswith('.pkl'):
                        with z.open(name) as f:
                            try:
                                data = joblib.load(f)
                                if isinstance(data, pd.DataFrame):
                                    return data.to_json(orient='split'), 200, {'Content-Type': 'application/json'}
                                if isinstance(data, dict):
                                    df = pd.DataFrame.from_dict(data)
                                    return df.to_json(orient='split'), 200, {'Content-Type': 'application/json'}
                                if isinstance(data, list):
                                    df = pd.DataFrame(data)
                                    return df.to_json(orient='split'), 200, {'Content-Type': 'application/json'}
                                return json.dumps({"error": f"Type {type(data)} non géré."}), 200
                            except Exception as e:
                                return json.dumps({"error": str(e)}), 500
                return json.dumps(zip_contents)
        except Exception as e:
            return json.dumps({"error": str(e)}), 500

    return json.dumps({"error": "Fichier non pris en charge"}), 400


if __name__ == '__main__':
    app.run(debug=True, host='0.0.0.0', port=5000)