from flask import Flask, request, jsonify
import os
import json
from datetime import datetime

app = Flask(__name__)

# Route to get configuration
@app.route('/getconfig', methods=['POST'])
def get_config():
    try:
        token_id = request.headers.get('ID')
        
        if not token_id:
            return jsonify({'error': 'Token ID is missing'}), 400

        config_file = os.path.join('config', f'{token_id}.json')

        if not os.path.exists(config_file):
            return jsonify({'error': 'Config not found for the specified token'}), 404

        with open(config_file, 'r') as file:
            config = json.load(file)
        
        
        data_file = os.path.join('config', f'{token_id}.json')
        
        with open(data_file, 'r') as file:
            data = json.load(file)
        # Extract and include last timestamp in the response
        try:
            config['last_timestamp'] =  data['timestamps'][len(data['timestamps'])-1]
        except:
            config['last_timestamp']=0 
        return jsonify(config), 200

    except Exception as e:
        return jsonify({'error': str(e)}), 500

# Route to set new data



@app.route('/setdata', methods=['POST'])
def set_data():
    # Token-ID aus den Request-Headern extrahieren
    token_id = request.headers.get('ID')
    
    # Neue Daten aus den Request-Headern laden
    new_data = request.headers.get('JSON')
    
    try:
        # Versuche, das JSON zu laden
        new_data = json.loads(new_data)
    except json.JSONDecodeError:
        # Wenn das JSON nicht korrekt formatiert ist, schreibe das neue JSON in die Datei und beende die Funktion
        write_json_file(token_id, new_data)
        return 'Invalid JSON format. New JSON data has been written to the file and overwritten existing data.'
    
    # Pfad zum Datenordner und Datei für die Token-ID erstellen
    data_folder = 'data'
    file_path = os.path.join(data_folder, f'{token_id}.json')
    
    # Überprüfen, ob die Datei existiert und Daten enthält
    if os.path.exists(file_path) and os.path.getsize(file_path) > 0:
        # Bestehende Daten aus der Datei laden
        with open(file_path, 'r') as file:
            existing_data = json.load(file)
        
        # Merge der beiden JSON-Objekte
        merged_data = merge_json(existing_data, new_data)
    else:
        # Wenn die Datei nicht existiert oder leer ist, neue Daten verwenden
        merged_data = new_data
    
    # Daten in die Datei schreiben
    with open(file_path, 'w') as file:
        json.dump(merged_data, file)
    
    return 'Data successfully set!'

def write_json_file(token_id, new_data):
    """
    Funktion zum Schreiben von JSON-Daten in eine Datei.
    """
    # Pfad zum Datenordner und Datei für die Token-ID erstellen
    data_folder = 'data'
    file_path = os.path.join(data_folder, f'{token_id}.json')
    
    # Neue Daten in die Datei schreiben
    with open(file_path, 'w') as file:
        json.dump(new_data, file)

def merge_json(old_json, new_json):
    if not isinstance(old_json, dict) or not isinstance(new_json, dict):
        return old_json

    for key, value in new_json.items():
        if key not in old_json:
            old_json[key] = value
        elif isinstance(value, list):
            if key not in old_json:
                old_json[key] = []
            if key == "timestamps":
                for item in value:
                    if item not in old_json[key]:
                        old_json[key].append(item)
            else:
                old_json[key].extend(value)
        elif isinstance(value, dict):
            old_json[key] = merge_json(old_json.get(key, {}), value)
        else:
            old_json[key] = value

    return old_json







if __name__ == '__main__':
    app.run(debug=False)