# deck_endpoints.py

from flask import Blueprint, request, jsonify
import sqlite3
import os

deck_bp = Blueprint('deck_bp', __name__)

DATABASE = 'mydatabase.db'

def get_db_connection():
    conn = sqlite3.connect(DATABASE)
    conn.row_factory = sqlite3.Row
    return conn

# Erstellen der Tabellen, falls sie nicht existieren
def init_db():
    conn = get_db_connection()
    cursor = conn.cursor()
    # Tabelle Deck erstellen
    cursor.execute('''
        CREATE TABLE IF NOT EXISTS Deck (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            deckname TEXT UNIQUE NOT NULL
        )
    ''')
    # Tabelle Image erstellen
    cursor.execute('''
        CREATE TABLE IF NOT EXISTS Image (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            deckid INTEGER,
            bildname TEXT,
            iconindex INTEGER,
            x1 REAL,
            x2 REAL,
            y1 REAL,
            y2 REAL,
            FOREIGN KEY(deckid) REFERENCES Deck(id)
        )
    ''')
    conn.commit()
    conn.close()

@deck_bp.route('/api/decks', methods=['POST'])
def create_deck():
    data = request.get_json()
    if not data or 'deckname' not in data:
        return jsonify({'error': 'No deckname provided'}), 400

    deckname = data['deckname']
    conn = get_db_connection()
    cursor = conn.cursor()
    try:
        cursor.execute('INSERT INTO Deck (deckname) VALUES (?)', (deckname,))
        conn.commit()
        deck_id = cursor.lastrowid
        conn.close()
        return jsonify({'status': 'success', 'deck_id': deck_id}), 201
    except sqlite3.IntegrityError:
        conn.close()
        return jsonify({'error': 'Deckname already exists'}), 400

@deck_bp.route('/api/decks', methods=['GET'])
def get_decks():
    conn = get_db_connection()
    cursor = conn.cursor()
    decks = cursor.execute('SELECT * FROM Deck').fetchall()
    deck_list = []
    for deck in decks:
        deck_id = deck['id']
        deck_name = deck['deckname']
        # Alle Images für dieses Deck abrufen
        images = cursor.execute('''
            SELECT 
                bildname AS name, 
                iconindex, 
                x1, 
                x2, 
                y1, 
                y2 
            FROM Image 
            WHERE deckid = ?
        ''', (deck_id,)).fetchall()
        images_list = [dict(image) for image in images]
        # Deck mit Namen und zugehörigen Images hinzufügen
        deck_dict = {
            'name': deck_name,
            'images': images_list
        }
        deck_list.append(deck_dict)
    conn.close()
    return jsonify(deck_list)

@deck_bp.route('/api/decks/<deckname>', methods=['DELETE'])
def delete_deck(deckname):
    conn = get_db_connection()
    cursor = conn.cursor()
    # Zuerst die Images löschen, die zu diesem Deck gehören
    cursor.execute('SELECT id FROM Deck WHERE deckname = ?', (deckname,))
    deck = cursor.fetchone()
    if deck:
        deck_id = deck['id']
        cursor.execute('DELETE FROM Image WHERE deckid = ?', (deck_id,))
        # Dann das Deck löschen
        cursor.execute('DELETE FROM Deck WHERE id = ?', (deck_id,))
        conn.commit()
        conn.close()
        return jsonify({'status': 'success'}), 200
    else:
        conn.close()
        return jsonify({'error': 'Deck not found'}), 404

@deck_bp.route('/image', methods=['PUT'])
def update_image():
    data = request.get_json()
    if not data:
        return jsonify({'error': 'No data provided'}), 400

    required_fields = ['deckid', 'bildname', 'iconindex', 'x1', 'x2', 'y1', 'y2']
    if not all(field in data for field in required_fields):
        return jsonify({'error': 'Missing fields in data'}), 400

    deckid = data['deckid']
    bildname = data['bildname']
    iconindex = data['iconindex']
    x1 = data['x1']
    x2 = data['x2']
    y1 = data['y1']
    y2 = data['y2']

    conn = get_db_connection()
    cursor = conn.cursor()
    cursor.execute('''
        INSERT INTO Image (deckid, bildname, iconindex, x1, x2, y1, y2)
        VALUES (?, ?, ?, ?, ?, ?, ?)
    ''', (deckid, bildname, iconindex, x1, x2, y1, y2))
    conn.commit()
    image_id = cursor.lastrowid
    conn.close()
    return jsonify({'status': 'success', 'image_id': image_id}), 201

@deck_bp.route('/image/<bildname>', methods=['GET'])
def get_images_by_bildname(bildname):
    conn = get_db_connection()
    images = conn.execute('SELECT * FROM Image WHERE bildname = ?', (bildname,)).fetchall()
    conn.close()
    image_list = [dict(image) for image in images]
    return jsonify(image_list)

@deck_bp.route('/image/<bildname>/<int:iconindex>', methods=['GET'])
def get_image_by_bildname_and_index(bildname, iconindex):
    conn = get_db_connection()
    image = conn.execute('SELECT * FROM Image WHERE bildname = ? AND iconindex = ?', (bildname, iconindex)).fetchone()
    conn.close()
    if image is None:
        return jsonify({'error': 'Image not found'}), 404
    else:
        return jsonify(dict(image)), 200

# Sicherstellen, dass die Datenbank existiert
if not os.path.exists(DATABASE):
    init_db()