i get this error on my flask app:
sqlalchemy.exc.InvalidRequestError: One or more mappers failed to initialize - can't proceed with initialization of other mappers. Triggering mapper: 'Mapper[Like(likes)]'. Original exception was: Mapper 'Mapper[Track(tracks)]' has no property 'likes_details'.  If this property was indicated from other mappers or configure events, ensure registry.configure() has been called.
from flask_socketio import SocketIO

import os
import json
from passlib.context import CryptContext
from PIL import Image
from flask import Flask, render_template, url_for, redirect, request, send_from_directory, flash, session
from flask_login import LoginManager, login_user, current_user, logout_user, UserMixin
from flask_restful import Api
from flask_sqlalchemy import SQLAlchemy
from data import db_session
from data.videos import Video
from data.users import User
from sqlalchemy.orm import joinedload
from data.login_form import LoginForm
from data.tracks import Track
from data.likes import Like
from data.register_form import RegisterForm
from data.video_form import VideoForm
from data.users_resource import UsersResource, UserListResource
from data.videos_resource import VideosResource, VideoListResource
from data.likes_resource import LikeResource, NotLikeResource
from data.subscriptions_resource import FollowResource, NotFollowResource
from werkzeug.utils import secure_filename
from data.avatar_form import AvatarForm
from data.comments import Comment
from data.comment_form import CommentForm
from data.music import Music
from werkzeug.utils import secure_filename
from sqlalchemy import ForeignKey
from sqlalchemy.orm import relationship
from sqlalchemy import func
from flask_migrate import Migrate
import uuid
import time
from apscheduler.schedulers.background import BackgroundScheduler
from datetime import datetime, timedelta
from datetime import datetime
app = Flask(__name__)
app.config['SECRET_KEY'] = 'yandexlyceum_secret_key'

api = Api(app)
socketio = SocketIO(app)
login_manager = LoginManager()
login_manager.init_app(app)

pwd_context = CryptContext(
    schemes=["pbkdf2_sha256"],
    default="pbkdf2_sha256",
    pbkdf2_sha256__default_rounds=30000
)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///music.db'

db = SQLAlchemy(app)
migrate = Migrate(app, db)
# Set the folder to store avatars
AVATAR_UPLOAD_FOLDER = os.path.join(app.root_path, 'static', 'avatars')
# Allowed extensions
ALLOWED_EXTENSIONS = {'png', 'jpg', 'jpeg', 'gif'}

app.config['AVATAR_UPLOAD_FOLDER'] = AVATAR_UPLOAD_FOLDER
app.config['MAX_CONTENT_LENGTH'] = 300 * 1024 * 1024  # 2MB max upload sizes
app.config['UPLOAD_FOLDER'] = 'static/uploads'
app.config['COVER_FOLDER'] = 'static/covers'
app.config['ALLOWED_AUDIO_EXTENSIONS'] = {'mp3', 'wav', 'flac', 'ogg'}
app.config['ALLOWED_IMAGE_EXTENSIONS'] = {'png', 'jpg', 'jpeg', 'gif'}

# Создаем папки, если их нет
os.makedirs(app.config['UPLOAD_FOLDER'], exist_ok=True)
os.makedirs(app.config['COVER_FOLDER'], exist_ok=True)
import tkinter as tk
import psutil
import time
import threading

# Модель для треков
from functools import wraps
from flask import abort
import random
from flask import send_file
import magic
import subprocess
from werkzeug.utils import secure_filename

UPLOAD_FOLDERA = 'uploadsvids'
PROCESSED_FOLDERA = 'processedvids'
ALLOWED_EXTENSIONS = {'mp4', 'mkv', 'avi', 'mov', 'flv'}

app.config['UPLOAD_FOLDERA'] = UPLOAD_FOLDERA
app.config['PROCESSED_FOLDERA'] = PROCESSED_FOLDERA

# Ensure that directories exist
os.makedirs(UPLOAD_FOLDERA, exist_ok=True)
os.makedirs(PROCESSED_FOLDERA, exist_ok=True)

# Define allowed extensions
# Define allowed file extensions as a global variable
ALLOWED_EXTENSIONS = {'mp4', 'mkv', 'avi', 'mov', 'flv'}

def convert_to_mp4(input_path, output_path):
    """
    Convert the input video file to MP4 format using FFmpeg.
    """
    try:
        subprocess.check_output([
            'ffmpeg', '-i', input_path, '-c:v', 'libx264',
            '-preset', 'fast', '-crf', '22',
            '-c:a', 'aac', '-b:a', '192k', output_path
        ])
    except subprocess.CalledProcessError as e:
        print(f"Failed to convert video. Error: {e.output}")
        raise
def allowed_file(filename):
    """
    Check if the file extension is in the allowed list.
    """
    return '.' in filename and filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS

@app.route('/mp4', methods=['GET', 'POST'])
def upload_mp4():
    if request.method == 'POST':
        if 'file' not in request.files:
            return "No file part"

        file = request.files['file']

        if file.filename == '':
            return "No selected file"

        # Call the allowed_file function with the filename only
        if file:
            filename = secure_filename(file.filename)
            file_path = os.path.join(app.config['UPLOAD_FOLDERA'], filename)
            file.save(file_path)

            mime = magic.Magic(mime=True)
            mime_type = mime.from_file(file_path)

            output_path = os.path.join(app.config['PROCESSED_FOLDERA'], f'{os.path.splitext(filename)[0]}.mp4')
            if mime_type != 'video/mp4':
                convert_to_mp4(file_path, output_path)
            else:
                convert_to_mp4(file_path, output_path)

            return redirect(url_for('uploaded_mp4', filename=os.path.basename(output_path)))

    return render_template('mp4.html')
@app.route('/tools', methods=['GET', 'POST'])
def tools():
    params = {
        'db_sess': db_sess,
        'User': User,
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }
    return render_template('tools.html', **params)

@app.route('/mp4s/<filename>')
def uploaded_mp4(filename):
    return send_from_directory(app.config['PROCESSED_FOLDERA'], filename)


UPLOAD_FOLDERI = 'static/uploadsimg'
CONVERTED_FOLDER = 'static/convertedimg'
os.makedirs(UPLOAD_FOLDERI, exist_ok=True)
os.makedirs(CONVERTED_FOLDER, exist_ok=True)

app.config['UPLOAD_FOLDERI'] = UPLOAD_FOLDERI

@app.route('/img2jpg', methods=['GET', 'POST'])
def convert_image():
    converted_file_url = None

    if request.method == 'POST':
        if 'image' not in request.files:
            return 'No file part', 400
        file = request.files['image']

        if file.filename == '':
            return 'No selected file', 400

        # Save the original file
        filename = secure_filename(file.filename)
        upload_path = os.path.join(app.config['UPLOAD_FOLDERI'], filename)
        file.save(upload_path)

        # Convert to JPG
        base_filename = os.path.splitext(filename)[0]
        jpg_filename = f"{base_filename}.jpg"
        converted_path = os.path.join(CONVERTED_FOLDER, jpg_filename)

        with Image.open(upload_path) as img:
            rgb_im = img.convert('RGB')  # Convert to RGB
            rgb_im.save(converted_path, 'JPEG')

        # Remove the original uploaded file
        os.remove(upload_path)

        # Get URL for downloading
        converted_file_url = url_for('static', filename=f'convertedimg/{jpg_filename}')

    return render_template('convert.html', converted_file_url=converted_file_url)
def admin_required(f):
    @wraps(f)
    def decorated_function(*args, **kwargs):
        if not current_user.is_authenticated or not current_user.is_admin:
            abort(403)  # Запрещено
        return f(*args, **kwargs)
    return decorated_function

def owner_or_admin_required(f):
    @wraps(f)
    def decorated_function(*args, **kwargs):
        track_id = kwargs.get('track_id')
        track = Track.query.get_or_404(track_id)
        if not current_user.is_authenticated:
            abort(403)
        return f(*args, **kwargs)
    return decorated_function

@app.route('/delete_track/<int:track_id>', methods=['POST'])
def delete_track(track_id):
    track = Track.query.get_or_404(track_id)

    # Удаление аудио файла
    audio_path = os.path.join(app.config['UPLOAD_FOLDER'], track.audio_filename)
    if os.path.exists(audio_path):
        os.remove(audio_path)

    # Список файлов обложек по умолчанию
    default_covers = ['default.png']

    # Удаление обложки трека, если она не является обложкой по умолчанию
    if track.cover_filename and track.cover_filename not in default_covers:
        cover_path = os.path.join(app.config['COVER_FOLDER'], track.cover_filename)
        if os.path.exists(cover_path):
            os.remove(cover_path)

    # Удаление записи трека из базы данных
    db.session.delete(track)
    db.session.commit()

    flash('Трек успешно удалён.', 'success')
    return redirect(url_for('tracks'))




class Album(db.Model):
    __tablename__ = 'albums'
    id = db.Column(db.Integer, primary_key=True)
    title = db.Column(db.String(150), nullable=False)
    artist = db.Column(db.String(150), nullable=False)
    cover_filename = db.Column(db.String(150), nullable=False, default='default_album.png')
    upload_date = db.Column(db.DateTime, default=datetime.utcnow)
    tracks = relationship('Track', backref='album', lazy=True, cascade="all, delete-orphan")


# Проверка разрешенных расширений файлов
def allowed_file(filename, allowed_extensions):
    return '.' in filename and \
           filename.rsplit('.', 1)[1].lower() in allowed_extensions
@app.route('/audiosearch')
def audiosearch():
    query = request.args.get('search', '').strip()

    if query:
        search_pattern = f"%{query.lower()}%"
        results = Track.query.join(Album).filter(
            db.or_(
                func.lower(Track.title).like(search_pattern),
                func.lower(Album.title).like(search_pattern),
                func.lower(Album.artist).like(search_pattern)
            )
        ).all()
    else:
        results = []

    return render_template('search_results.html', query=query, results=results)
# Генерация уникального идентификатора сессии
@app.before_request
def make_session_permanent():
    if 'session_id' not in session:
        session['session_id'] = str(uuid.uuid4())

# Страница загрузки трека
@app.route('/upload_audio', methods=['GET', 'POST'])
def upload():
    if request.method == 'POST':
        # Получаем данные формы
        title = request.form.get('title')
        audio_file = request.files.get('audio_file')
        cover_file = request.files.get('cover_file')
        album_id = request.form.get('album_id')  # ID выбранного альбома
        new_album_title = request.form.get('new_album_title')  # Название нового альбома (если создается)
        new_album_artist = request.form.get('new_album_artist')  # Исполнитель нового альбома
        new_album_cover = request.files.get('new_album_cover')  # Обложка нового альбома

        # Проверяем обязательные поля
        if not title or not audio_file:
            flash('Название и аудио файл обязательны для заполнения.', 'danger')
            return redirect(url_for('upload'))

        # Проверяем тип аудио файла
        if not allowed_file(audio_file.filename, app.config['ALLOWED_AUDIO_EXTENSIONS']):
            flash('Неверный тип аудио файла.', 'danger')
            return redirect(url_for('upload'))

        # Если создается новый альбом
        if new_album_title and new_album_artist:
            # Обработка обложки нового альбома
            if new_album_cover and allowed_file(new_album_cover.filename, app.config['ALLOWED_IMAGE_EXTENSIONS']):
                new_album_cover_filename = str(uuid.uuid4()) + '_' + secure_filename(new_album_cover.filename)
                new_album_cover_path = os.path.join(app.config['COVER_FOLDER'], new_album_cover_filename)
                new_album_cover.save(new_album_cover_path)
            else:
                new_album_cover_filename = 'default_album.png'

            # Создание нового альбома
            new_album = Album(title=new_album_title, artist=new_album_artist, cover_filename=new_album_cover_filename)
            db.session.add(new_album)
            db.session.commit()
            album_id = new_album.id
            flash('Новый альбом успешно создан!', 'success')
        elif album_id:
            album_id = int(album_id)
            album = Album.query.get(album_id)
            if not album:
                flash('Выбранный альбом не существует.', 'danger')
                return redirect(url_for('upload'))
        else:
            album_id = None  # Трек не привязан к альбому

        # Сохраняем аудио файл
        audio_filename = str(uuid.uuid4()) + '_' + secure_filename(audio_file.filename)
        audio_path = os.path.join(app.config['UPLOAD_FOLDER'], audio_filename)
        audio_file.save(audio_path)

        # Сохраняем обложку трека или используем стандартную
        if cover_file and allowed_file(cover_file.filename, app.config['ALLOWED_IMAGE_EXTENSIONS']):
            cover_filename = str(uuid.uuid4()) + '_' + secure_filename(cover_file.filename)
            cover_path = os.path.join(app.config['COVER_FOLDER'], cover_filename)
            cover_file.save(cover_path)
        else:
            cover_filename = 'default.png'

        # Создаем новый трек в базе данных
        new_track = Track(title=title, album_id=album_id, cover_filename=cover_filename, audio_filename=audio_filename, owner_id=current_user.id)
        db.session.add(new_track)
        db.session.commit()
        flash('Трек успешно загружен!', 'success')
        return redirect(url_for('track', track_id=new_track.id))

    # Получаем все альбомы для отображения в выпадающем списке
    albums = Album.query.order_by(Album.title).all()
    return render_template('upload.html', albums=albums)
from flask import flash

# Маршрут для отображения всех альбомов
@app.route('/albums')
def albums():
    all_albums = Album.query.order_by(Album.upload_date.desc()).all()
    return render_template('albums.html', albums=all_albums)

# Маршрут для создания нового альбома
@app.route('/create_album', methods=['GET', 'POST'])
def create_album():
    # Только авторизованные пользователи могут создавать альбомы

    if request.method == 'POST':
        title = request.form.get('title')
        artist = request.form.get('artist')
        cover_file = request.files.get('cover_file')

        if not title or not artist:
            flash('Название и исполнитель обязательны для заполнения.', 'danger')
            return redirect(url_for('create_album'))

        # Обработка обложки альбома
        if cover_file and allowed_file(cover_file.filename, app.config['ALLOWED_IMAGE_EXTENSIONS']):
            cover_filename = str(uuid.uuid4()) + '_' + secure_filename(cover_file.filename)
            cover_path = os.path.join(app.config['COVER_FOLDER'], cover_filename)
            cover_file.save(cover_path)
        else:
            cover_filename = 'default_album.png'  # Используйте стандартную обложку

        # Создание нового альбома
        new_album = Album(title=title, artist=artist, cover_filename=cover_filename)
        db.session.add(new_album)
        db.session.commit()
        flash('Альбом успешно создан!', 'success')
        return redirect(url_for('albums'))

    return render_template('create_album.html')

# Маршрут для просмотра отдельного альбома с его треками
@app.route('/album/<int:album_id>')
def view_album(album_id):
    album = Album.query.get_or_404(album_id)
    return render_template('view_album.html', album=album)
# Страница со списком всех треков

@app.route('/tracks')
def tracks():
    all_albums = Album.query.order_by(Album.upload_date.desc()).limit(5).all()
    all_tracks = Track.query.all()
    params = {
        'user': user,
        'all_albums': all_albums
    }
    # Define a list of colors for default.png covers
    color_map = ["#FFB6C1", "#FFD700", "#ADFF2F", "#87CEFA", "#FF69B4", "#98FB98", "#FF6347", "#8A2BE2"]

    return render_template('tracks.html', tracks=all_tracks, color_map=color_map)
# Страница отдельного трека
@app.route('/track/<int:track_id>')
def track(track_id):
    track = Track.query.get_or_404(track_id)
    # Проверяем, лайкнул ли пользователь этот трек
    session_id = session.get('session_id')
    liked = Like.query.filter_by(session_id=session_id, track_id=track_id).first()
    return render_template('track.html', track=track, liked=liked is not None)

# Обработка лайков
@app.route('/like_music/<int:track_id>', methods=['POST'])
def like(track_id):
    track = Track.query.get_or_404(track_id)
    session_id = session.get('session_id')
    existing_like = Like.query.filter_by(session_id=session_id, track_id=track_id).first()
    if not existing_like:
        new_like = Like(session_id=session_id, track_id=track_id)
        track.likes += 1
        db.session.add(new_like)
        db.session.commit()
    return redirect(url_for('track', track_id=track_id))

# Страница с рекомендациями
@app.route('/recommendations')
def recommendations():
    top_liked = Track.query.order_by(Track.likes.desc()).limit(5).all()
    newest = Track.query.order_by(Track.upload_date.desc()).limit(5).all()
    return render_template('recommendations.html', top_liked=top_liked, newest=newest)

# Отдача обложек и аудио файлов
#@app.route('/covers/<filename>')
#def cover(filename):
 #   return send_from_directory(app.config['COVER_FOLDER'], filename)

@app.route('/uploads/<filename>')
def uploaded_file(filename):
    return send_from_directory(app.config['UPLOAD_FOLDER'], filename)

@app.route('/favicon.ico')
def favicon():
    """Возвращает кастомную иконку страницы в браузере"""
    return send_from_directory(os.path.join(app.root_path, 'static/img'),
                               'vhs.ico', mimetype='image/vnd.microsoft.icon')


@socketio.on('comment')
def handle_comment_event(username, video_title):
    message = f"{username} commented on your video '{video_title}'"
    socketio.emit('notify', {'message': message})
def like_video(video_id):
    # Assuming this function is called during a like action
    video = db_sess.query(Video).get(video_id)
    if video:
        message = f"Someone liked your video '{video.title}'"
        socketio.emit('notify', {'message': message}, room=video.author_id)  # send to video author
def subscribe_to_user(user_id):
    # Assuming this function is called during a subscribe action
    user = db.session.query(User).first()
    if user:
        message = "Someone subscribed to you!"
        socketio.emit('notify', {'message': message}, room=user.id)


def load_user(user_id):
    """Loads the user by ID."""
    return db_sess.query(User).get(user_id)

@app.route('/upload_avatar', methods=['GET', 'POST'])
@app.route('/upload_avatar', methods=['POST'])
def upload_avatar():
    """Allows authenticated users to upload and customize their avatar."""
    form = AvatarForm()
    if request.method == 'POST':
        # Handling form submission and image saving
        if 'avatar' in request.files:
            avatar = request.files['avatar']
            filename = secure_filename(avatar.filename)
            file_ext = os.path.splitext(filename)[1].lower()
            avatar_filename = f"user_{current_user.id}{file_ext}"
            avatar_path = os.path.join(app.config['AVATAR_UPLOAD_FOLDER'], avatar_filename)

            # Save and process the avatar
            try:
                with Image.open(avatar) as img:
                    img = img.convert('RGB')
                    img.thumbnail((300, 300))
                    img.save(avatar_path, optimize=True, quality=85)

                # Update user's avatar in the database
                current_user.avatar = avatar_filename
                db_sess.commit()
                flash("Аватар успешно обновлен!", "success")
                return redirect(url_for('user', user_id=current_user.id))

            except Exception as e:
                flash('Загрузка не удалась. Пожалуйста, попробуйте снова.', 'danger')
                return redirect(url_for('upload_avatar'))

    return render_template('upload_avatar.html', form=form)



@app.errorhandler(403)
def forbidden(e):
    """Возвращает кастомную страницу ошибки 403"""
    params = {
        'title': 'Доступ запрещен',
        'message': 'Похоже, у вас нет доступа к этой странице ¯\\_(ツ)_/¯',
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }
    return render_template('error1.html', **params), 403

def to_int(value):
    try:
        return int(value)
    except ValueError:
        return 0  # or handle as needed

app.jinja_env.filters['to_int'] = to_int

@app.errorhandler(404)
def page_not_found(e):
    """Возвращает кастомную страницу ошибки 404"""
    params = {
        'title': 'Страница не найдена',
        'message': 'Похоже, мы не можем найти нужную вам страницу ¯\\_(ツ)_/¯',
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }
    return render_template('error2.html', **params), 404


@app.errorhandler(405)
def method_not_allowed(e):
    """Возвращает кастомную страницу ошибки 405"""
    params = {
        'title': 'Метод не разрешен',
        'message': 'Похоже, этот метод не разрешен ¯\\_(ツ)_/¯',
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }
    return render_template('error3.html', **params), 405


@app.errorhandler(500)
def internal_server_error(e):
    """Возвращает кастомную страницу ошибки 500"""
    params = {
        'title': 'Ошибка сервера',
        'message': 'Похоже, на сервере произошла непредвиденная ошибка ¯\\_(ツ)_/¯',
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }
    return render_template('error4.html', **params), 500


# In your main application file (e.g., main2.py)

from sqlalchemy.orm import joinedload

@app.route('/')
@app.route('/index')
def index():
    """Returns the home page"""
    # Eagerly load the 'author' relationship to avoid additional queries in the template
    all_videos = db_sess.query(Video).options(joinedload(Video.author)).all()

    if len(all_videos) > 10:
        last_videos = all_videos[-10:][::-1]  # Get the last 10 videos
    else:
        last_videos = all_videos[::-1]  # Reverse the list

    best_videos = sorted(all_videos, key=lambda x: -x.likes)[:3]
    underrated_videos = [video for video in all_videos if video.likes == 0]

    if len(underrated_videos) > 9:
        underrated_videos = underrated_videos[-9:][::-1]
    else:
        underrated_videos = underrated_videos[::-1]

    params = {
        'title': 'Video Hosting Service',
        'last_videos': last_videos,
        'best_videos': best_videos,
        'underrated_videos': underrated_videos,
        'user': user,
        'db_sess': db_sess,
        'User': User,
        'Video': Video,
        'authenticated': current_user.is_authenticated,
        'all_videos': all_videos,
        'current_user': current_user
    }
    return render_template('index.html', **params)


@login_manager.user_loader
def load_user(user_id):
    """Возвращает пользователя"""
    return db_sess.query(User).get(user_id)


@app.route('/login', methods=['GET', 'POST'])
def login():
    """Возвращает страницу авторизации и авторизует пользователя"""
    if current_user.is_authenticated:
        return forbidden('')
    form = LoginForm()
    params = {
        'title': 'Авторизация',
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }
    if form.validate_on_submit():
        user = db_sess.query(User).filter(User.login == form.login.data).first()
        if user and pwd_context.verify(form.password.data, user.password):
            login_user(user, remember=form.remember_me.data)
            return redirect('/')
        return render_template('login.html',
                               message='Неправильный логин или пароль',
                               form=form, **params)
    return render_template('login.html', form=form, **params)

from flask import render_template, request, redirect, url_for, flash
from flask_login import login_required, current_user

@app.route('/edit_comment/<int:comment_id>', methods=['GET', 'POST'])
@login_required
def edit_comment(comment_id):
    # Fetch the comment from the database using comment_id
    comment = db_sess.query(Comment).filter(Comment.id == comment_id).first()

    # Ensure the comment exists and the current_user is the author
    if comment is None or comment.user_id != current_user.id:
        flash('Comment not found or you do not have permission to edit it.', 'danger')
        return redirect(url_for('video', video_id=comment.video_id))  # Redirect to the video's page

    if request.method == 'POST':
        new_content = request.form.get('content')
        if new_content:
            comment.content = new_content
            db_sess.commit()
            flash('Comment updated successfully!', 'success')
        else:
            flash('No content provided for update.', 'danger')
        return redirect(url_for('video', video_id=comment.video_id))

    return render_template('edit_comment.html', comment=comment)

@app.route('/register', methods=['GET', 'POST'])
def register():
    """Возвращает страницу регистрации и регистрирует пользователя"""
    if current_user.is_authenticated:
        return forbidden('')
    form = RegisterForm()
    params = {
        'title': 'Регистрация',
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }
    if form.validate_on_submit():
        user = db_sess.query(User).filter(User.login == form.login.data).all()
        if user:
            return render_template('register.html',
                                   message='Пользователь с таким логином уже существует',
                                   form=form, **params)
        if form.password.data != form.repeat_password.data:
            return render_template('register.html',
                                   message='Пароли не совпадают',
                                   form=form, **params)
        user = User()
        user.login = form.login.data
        user.password = pwd_context.hash(form.password.data)
        user.name = form.name.data
        user.surname = form.surname.data
        db_sess.add(user)
        db_sess.commit()
        login_user(user, remember=form.remember_me.data)
        return redirect('/')
    return render_template('register.html', form=form, **params)
from flask import jsonify, request, current_app

@app.route('/api/like_comment/<int:comment_id>', methods=['POST']) # Ensure the user is logged in
def like_comment(comment_id):
    # Logic to handle liking a comment
    comment = db_sess.query(Comment).filter_by(id=comment_id).first()
    if not comment:
        return jsonify({'success': False, 'message': 'Comment not found.'}), 404

    # Example logic: increment the like count
    comment.likes += 1
    db_sess.commit()

    return jsonify({'success': True, 'new_like_count': comment.likes})

@app.route('/logout')
def logout():
    """
    Производит выход пользователя из системы, возвращает домашнюю страницу.
    Если пользователь не авторизован, возвращает страницу ошибки 403
    """
    if current_user.is_authenticated:
        logout_user()
        return redirect('/')
    else:
        return forbidden('')
@app.route('/api/pin_comment/<int:comment_id>', methods=['POST'])
def pin_comment(comment_id):
    comment = db_sess.query(Comment).get(comment_id)
    if not comment:
        return {'error': 'Comment not found'}, 404
    video = db_sess.query(Video).get(comment.video_id)

    # Сбрасываем все закрепленные комментарии для данного видео
    db_sess.query(Comment).filter(Comment.video_id == video.id).update({'pinned': False})
    # Закрепляем выбранный комментарий
    comment.pinned = True
    db_sess.commit()
    return {'success': True}
@app.route('/delete_comment/<int:comment_id>', methods=['POST'])
def delete_comment(comment_id):
    comment = db_sess.query(Comment).get(comment_id)
    if not comment:
        flash('Комментарий не найден.', 'danger')
        return redirect(request.referrer)
    if not current_user.is_authenticated or current_user.id != comment.user_id:
        flash('Вы не можете удалить этот комментарий.', 'danger')
        return redirect(request.referrer)
    db_sess.delete(comment)
    db_sess.commit()
    flash('Комментарий удален.', 'success')
    return redirect(request.referrer)
from flask import abort
from data.video_views import VideoView
@app.route('/video/<int:video_id>', methods=['GET', 'POST'])
def video(video_id):
    current_video = db_sess.query(Video).get(video_id)
    if current_video is None:
        return page_not_found('')

    # Проверяем, разрешены ли комментарии для этого видео
    comments_enabled = current_video.comments_enabled

    # Получаем автора видео
    author = current_video.author
    all_videos = db_sess.query(Video).all()
    # Проверяем, поставил ли текущий пользователь лайк и подписан ли
    like = False
    subscription = False
    # Check if the user is logged in
    if current_user.is_authenticated:
        # Check if the user has already viewed the video
        view_exists = db_sess.query(VideoView).filter_by(
            user_id=current_user.id, video_id=video_id).first()

        # If not, increment the view count and add a record to video_views
        if not view_exists:
            current_video.views += 1
            new_view = VideoView(user_id=current_user.id, video_id=video_id)
            db_sess.add(new_view)
            db_sess.commit()
    if current_user.is_authenticated:
        likes = json.loads(current_user.likes)
        subscriptions = json.loads(current_user.subscriptions)
        if video_id in likes:
            like = True
        if current_video.author in subscriptions:
            subscription = True

    # Обрабатываем форму комментария
    # Обрабатываем форму комментария только если комментарии включены
    form = CommentForm()
    if comments_enabled and form.validate_on_submit():
        if current_user.is_authenticated and not current_user.is_blocked:
            # Добавление комментария
            comment = Comment(
                content=form.content.data,
                user_id=current_user.id,
                video_id=video_id,
                parent_id=form.parent_id.data or None
            )
            db_sess.add(comment)
            db_sess.commit()
            flash('Комментарий добавлен!', 'success')
            return redirect(url_for('video', video_id=video_id))
        else:
            flash('Вы не можете оставить комментарий.', 'danger')
            return redirect

    # Получаем комментарии к видео


    comments = db_sess.query(Comment).filter(Comment.video_id == video_id).options(
        joinedload(Comment.user),
        joinedload(Comment.parent).joinedload(Comment.user),
        joinedload(Comment.replies).joinedload(Comment.user)
    ).order_by(Comment.datetime.desc()).all()  # Изменено на desc() для сортировки в обратном порядке

    # Создаем словарь комментариев по id для удобства доступа
    comments_by_id = {comment.id: comment for comment in comments}

    # Строим дерево комментариев
    root_comments = []
    for comment in comments:
        if comment.parent_id is None:
            root_comments.append(comment)
        else:
            parent = comments_by_id.get(comment.parent_id)
            if parent:
                if not hasattr(parent, 'replies_sorted'):
                    parent.replies_sorted = []
                parent.replies_sorted.append(comment)
    last_videos = all_videos[len(all_videos) - 10:][::-1]
    params = {
        'title': f"{current_video.title} - {author.name} {author.surname}",
        'current_video': current_video,
        'video_src': url_for("static", filename=f'vid/{video_id}.mp4'),
        'author': author,
        'like': like,

        'subscription': subscription,
        'db_sess': db_sess,
        'comments': root_comments,
        'User': User,
        'authenticated': current_user.is_authenticated,
        'current_user': current_user,
        'avatar_url': url_for('static', filename=f'avatars/{author.avatar}'),
        'comments': comments,
        'last_videos': last_videos,
        'form': form
    }
    return render_template('video.html', **params)


@app.route('/add_video', methods=['GET', 'POST'])
def add_video():
    if not current_user.is_authenticated:
        return forbidden('')
    form = VideoForm()
    params = {
        'title': 'Добавление видео',
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }
    # Добавляем проверку на блокировку
    if current_user.is_blocked:
        flash('Ваш аккаунт заблокирован и вы не можете загружать видео.', 'danger')
        return render_template('add_video.html', form=form, **params)

    if form.validate_on_submit():
        video_file = request.files['video']
        if not video_file.filename.lower().endswith('.mp4'):
            return render_template('add_video.html',
                                   message='Данный формат видео не поддерживается. '
                                           'Пожалуйста, загрузите видео в формате mp4.',
                                   form=form, **params)
        preview_file = request.files['preview']
        if not preview_file.filename.lower().endswith('.jpg'):
            return render_template('add_video.html',
                                   message='Данный формат обложки не поддерживается. '
                                           'Пожалуйста, загрузите изображение в формате jpg.',
                                   form=form, **params)
        video = Video()
        video.title = form.title.data
        video.description = '<br>'.join(form.description.data.split('\n'))
        video.author = current_user.id
        video.comments_enabled = form.comments_enabled.data  # Сохраняем значение флажка
        db_sess.add(video)
        db_sess.commit()
        video_file.save(os.path.join('static/vid', f'{video.id}.mp4'))
        preview_file.save(os.path.join('static/pre', f'{video.id}.jpg'))
        return redirect('/')
    return render_template('add_video.html', form=form, **params)



@app.route('/edit_video/<int:video_id>', methods=['GET', 'POST'])
def edit_video(video_id):
    """
    Возвращает страницу редактирования видео
    если пользователь авторизован и является автором,
    иначе доступ запрщен
    """
    form = VideoForm()
    video = db_sess.query(Video).get(video_id)
    if not current_user.is_authenticated:
        return forbidden('')
    if not current_user.id != video.author:
        return forbidden('')

    params = {
        'title': 'Редактирование видео',
        'video': video,
        'description': '\n'.join(video.description.split('<br>')),
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }
    if form.validate_on_submit():
        video_file = request.files['video']
        if not video_file.filename.lower().endswith('.mp4'):
            return render_template('edit_video.html',
                                   message='Данный формат видео не поддерживается',
                                   form=form, **params)
        preview_file = request.files['preview']
        if not preview_file.filename.lower().endswith('.jpg'):
            return render_template('edit_video.html',
                                   message='Данный формат обложки не поддерживается',
                                   form=form, **params)
        video.title = form.title.data
        video.description = '<br>'.join(form.description.data.split('\n'))
        db_sess.commit()
        video_file.save(os.path.join('static/vid', f'{video.id}.mp4'))
        preview_file.save(os.path.join('static/pre', f'{video.id}.jpg'))
        with Image.open(f'static/pre/{video.id}.jpg') as preview_file:
            width, height = preview_file.size
            if width >= height:
                new_width = height * 16 // 9
                delta = (width - new_width) // 2
                preview_file = preview_file.crop((delta, 0, new_width + delta, height))
            else:
                new_height = width * 9 // 16
                delta = (height - new_height) // 2
                preview_file = preview_file.crop((0, delta, width, new_height + delta))
            preview_file.save(f'static/pre/{video.id}.jpg')
        return redirect('/')
    return render_template('edit_video.html', form=form, **params)


@app.route('/delete_video/<int:video_id>')
def delete_video(video_id):
    video = db_sess.query(Video).get(video_id)
    if not video:
        return page_not_found('Video not found.')


    # No need for explicit comment deletion; should cascade
    db_sess.delete(video)
    db_sess.commit()

    # Remove video file and preview
    try:
        os.remove(os.path.join('static/vid', f'{video.id}.mp4'))
        os.remove(os.path.join('static/pre', f'{video.id}.jpg'))
    except FileNotFoundError:
        pass  # Handle if the files do not exist

    return redirect(f'/user/{current_user.id}')


@app.route('/user/<int:user_id>')
def user(user_id):
    """Возвращает страницу выбранного пользователя с его видео"""
    user = db_sess.query(User).get(user_id)
    if user is None:
        return page_not_found('')

    # Получаем все видео пользователя
    videos = db_sess.query(Video).filter(Video.author_id == user_id).all()[::-1]

    # Вычисляем количество видео
    video_count = len(videos)
    # Альтернативно, для оптимизации можно использовать:
    # video_count = db_sess.query(Video).filter(Video.author == user_id).count()

    subscription = False
    if current_user.is_authenticated:
        subscriptions = json.loads(current_user.subscriptions)
        if user_id in subscriptions:
            subscription = True
    print(f"Is user {user_id} subscribed by current user? {'Yes' if subscription else 'No'}")
    # Пагинация видео (разбивка на группы по 3 видео)
    paginated_videos = [videos[i * 3:i * 3 + 3] for i in range(len(videos) // 3)] + [videos[(len(videos) // 3) * 3:]]

    # Добавляем все необходимые параметры, включая video_count
    params = {
        'title': f'{user.name} {user.surname}',
        'user': user,
        'videos': paginated_videos,
        'subscription': subscription,
        'empty': True if len(videos) == 0 else False,
        'authenticated': current_user.is_authenticated,
        'current_user': current_user,
        'video_count': video_count  # Передаём количество видео
    }
    return render_template('user.html', **params)
@app.route('/delete_user', methods=['GET', 'POST'])
def delete_user():
    """Handles user deletion with confirmation."""
    if not current_user.is_authenticated:
        return forbidden('')
    if request.method == 'POST':
        # Check for confirmation
        if 'confirm_delete' in request.form:
            # Delete user's videos (assuming you want to cascade deletion)


            # Delete user's comments
            for comment in current_user.comments:
                db_sess.delete(comment)

            # Delete the user
            db_sess.delete(current_user)
            db_sess.commit()

            flash('Your account has been deleted.', 'success')
            return redirect(url_for('index'))  # Redirect to homepage
        else:
            flash('Deletion cancelled.', 'info')
            return redirect(url_for('settings'))  # Redirect back to settings

    # GET request - show confirmation page
    return render_template('delete_user.html', title='Delete Account')
@app.route('/settings')
def settings():


    if not current_user.is_authenticated:
        return forbidden('')
    params = {
        'title': f'Настройки',
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }
    return render_template('settings.html', **params)
def decline_subscription(number):
    """
    Возвращает правильную форму слова "подписчик" в зависимости от числа.
    Например:
        1 -> подписчик
        2 -> подписчика
        5 -> подписчиков
    """
    number = abs(number)  # Убираем знак, если число отрицательное
    last_two = number % 100
    last = number % 10

    if 11 <= last_two <= 14:
        return "подписчиков"
    if last == 1:
        return "подписчик"
    if 2 <= last <= 4:
        return "подписчика"
    return "подписчиков"
def decline_views(number):
    """
    Возвращает правильную форму слова "подписчик" в зависимости от числа.
    Например:
        1 -> подписчик
        2 -> подписчика
        5 -> подписчиков
    """
    number = abs(number)  # Убираем знак, если число отрицательное
    last_two = number % 100
    last = number % 10

    if 11 <= last_two <= 14:
        return "просмотров"
    if last == 1:
        return "просмотр"
    if 2 <= last <= 4:
        return "просмотра"
    return "посмотров"
# Регистрация фильтра в Jinja2
app.jinja_env.filters['decline_subscription'] = decline_subscription
app.jinja_env.filters['decline_views'] = decline_views
from data.users import User
from sqlalchemy import update

@app.route('/admin/users', methods=['GET', 'POST'])
def admin_users():
    """Административная страница для управления флажками, блокировками и статусом админа пользователей"""
    if not current_user.is_authenticated or not current_user.is_admin:
        return forbidden('')  # Только администратор имеет доступ

    users = db_sess.query(User).all()

    if request.method == 'POST':
        # Обработка изменений флажков, блокировок и статуса админа
        for user in users:
            if user.id == 1:
                continue  # Не изменять статус администратора

            # Обработка флажков is_checked
            is_checked = request.form.get(f'checked_{user.id}', 'off') == 'on'
            if user.is_checked != is_checked:
                user.is_checked = is_checked
                db_sess.add(user)

            # Обработка блокировок is_blocked
            is_blocked = request.form.get(f'blocked_{user.id}', 'off') == 'on'
            if user.is_blocked != is_blocked:
                user.is_blocked = is_blocked
                db_sess.add(user)

            is_tester = request.form.get(f'is_tester_{user.id}', 'off') == 'on'
            if user.is_tester != is_tester:
                user.is_tester = is_tester
                db_sess.add(user)

            # Обработка статуса администратора is_admin
            is_admin = request.form.get(f'is_admin_{user.id}', 'off') == 'on'
            if user.is_admin != is_admin:
                user.is_admin = is_admin
                db_sess.add(user)
        db_sess.commit()
        flash('Изменения успешно сохранены.', 'success')
        return redirect(url_for('admin_users'))

    params = {
        'title': 'Администрирование пользователей',
        'users': users,
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }
    return render_template('admin_users.html', **params)
@app.route('/feed')
def feed():
    """
    Возвращает страницу с лентой видео от людей,
    на которых подписан пользователь.
    Если пользователь не авторизован, доступ запрещен
    """
    if not current_user.is_authenticated:
        return forbidden('')
    subscriptions = json.loads(current_user.subscriptions)
    videos = []
    for i in subscriptions:
        videos += db_sess.query(Video).filter(Video.author == i).all()[::-1][:12]
    new_videos = sorted(videos, key=lambda x: x.datetime)[::-1]
    new_videos = [
        {
            'video': i,
            'author': db_sess.query(User).get(i.author)
        }
        for i in new_videos
    ]
    params = {
        'title': f'Лента',
        'new_videos': [new_videos[i * 3:i * 3 + 3] for i in range(len(new_videos) // 3)] +
                      [new_videos[(len(new_videos) // 3) * 3:]],
        'empty': True if len(new_videos) == 0 else False,
        'subscripted': True if len(subscriptions) != 0 else False,
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }
    return render_template('feed.html', **params)


@app.route('/favorite')
def favorite():
    """
    Возвращает страницу с любимыми видео пользователя.
    Если пользователь не авторизован, доступ запрещен
    """
    if not current_user.is_authenticated:
        return forbidden('')
    likes = json.loads(current_user.likes)[::-1]
    liked_videos = [
    {
        'video': video,
        'author': db_sess.query(User).get(video.author) if video.author else None
    }
    for i in likes
    if (video := db_sess.query(Video).get(i)) is not None
]
    params = {
        'title': f'Любимое',
        'liked_videos': [liked_videos[i * 3:i * 3 + 3] for i in range(len(liked_videos) // 3)] +
                        [liked_videos[(len(liked_videos) // 3) * 3:]],
        'empty': True if len(liked_videos) == 0 else False,
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }
    return render_template('favorite.html', **params)


@app.route('/people')
def people():
    """
    Возвращает страницу с пользователями, на которых подписан пользователь.
    Если пользователь не авторизован, доступ запрещен
    """
    if not current_user.is_authenticated:
        return forbidden('')
    subscriptions = json.loads(current_user.subscriptions)
    subscripted_users = [
        {
            'user': db_sess.query(User).get(i)
        }
        for i in subscriptions
    ]
    subscripted_users.sort(key=lambda x: x['user'].name + x['user'].surname + x['user'].login)
    params = {
        'title': f'Люди',
        'subscripted_users': subscripted_users,
        'empty': True if len(subscripted_users) == 0 else False,
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }
    return render_template('people.html', **params)
from data.edit_profile_form import EditProfileForm  # Импортируем форму

@app.route('/edit_profile', methods=['GET', 'POST'])
def edit_profile():
    if not current_user.is_authenticated:
        return forbidden('')

    form = EditProfileForm(obj=current_user)
    params = {
        'title': 'Редактирование профиля',
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }

    if form.validate_on_submit():
        if form.login.data and form.login.data != current_user.login:
            existing_user = db_sess.query(User).filter(User.login == form.login.data).first()
            if existing_user:
                flash('Пользователь с таким логином уже существует.', 'danger')
                return render_template('edit_profile.html', form=form, **params)

        if form.name.data:
            current_user.name = form.name.data
        if form.surname.data:
            current_user.surname = form.surname.data
        if form.password.data:
            current_user.password = pwd_context.hash(form.password.data)

        current_user.channel_description = form.channel_description.data

        db_sess.commit()
        flash('Профиль обновлён успешно!', 'success')
        return redirect(url_for('user', user_id=current_user.id))

    return render_template('edit_profile.html', form=form, **params)
@app.route('/api/comment_like/<int:comment_id>', methods=['POST'])
def comment_like(comment_id):
    if not current_user.is_authenticated:
        return {'error': 'Unauthorized'}, 401
    comment = db_sess.query(Comment).get(comment_id)
    if not comment:
        return {'error': 'Comment not found'}, 404
    likes = json.loads(current_user.comment_likes)
    if comment_id in likes:
        return {'error': 'Already liked'}, 400
    likes.append(comment_id)
    current_user.comment_likes = json.dumps(likes)
    comment.likes += 1
    db_sess.commit()
    return {'success': True, 'likes': comment.likes}

@app.route('/api/comment_unlike/<int:comment_id>', methods=['POST'])
def comment_unlike(comment_id):
    if not current_user.is_authenticated:
        return {'error': 'Unauthorized'}, 401
    comment = db_sess.query(Comment).get(comment_id)
    if not comment:
        return {'error': 'Comment not found'}, 404
    likes = json.loads(current_user.comment_likes)
    if comment_id not in likes:
        return {'error': 'Not liked'}, 400
    likes.remove(comment_id)
    current_user.comment_likes = json.dumps(likes)
    comment.likes -= 1
    db_sess.commit()
    return {'success': True, 'likes': comment.likes}
@app.route('/about')
def about():
    params = {
        'title': f'Про сайт'

    }
    return render_template('about.html', **params)
from flask import request, render_template
from sqlalchemy import or_

from flask import request, render_template
from sqlalchemy import or_

@app.route('/search')
def search():
    query = request.args.get('search', '').strip()

    if query:
        # Поиск по названию трека или альбома
        search_pattern = f"%{query}%"
        # Используем JOIN для связи треков с альбомами
        results = Track.query.join(Album).filter(
            db.or_(
                Track.title.ilike(search_pattern),
                Album.title.ilike(search_pattern),
                Album.artist.ilike(search_pattern)
            )
        ).all()
    else:
        results = []

    return render_template('search_results.html', tracks=results, query=query)
@app.route('/users')
def users():
    # Query all users from the database
    all_users = db_sess.query(User).all()

    # Set up template parameters
    params = {
        'title': 'All Users',
        'users': all_users,
        'authenticated': current_user.is_authenticated,
        'current_user': current_user
    }

    # Render the template with the list of users
    return render_template('users.html', **params)
from data.db_session import SqlAlchemyBase
from flask_socketio import SocketIO


db_session.global_init("db/hosting.sql")

db_sess = db_session.create_session()
SqlAlchemyBase.metadata.create_all(bind=db_sess.bind)
db_sess.rollback

SqlAlchemyBase.metadata.create_all(bind=db_sess.bind)
api.add_resource(UsersResource, '/api/users/<int:user_id>')
api.add_resource(UserListResource, '/api/users')
api.add_resource(VideosResource, '/api/videos/<int:video_id>')
api.add_resource(VideoListResource, '/api/videos')
api.add_resource(LikeResource, '/api/like/<int:video_id>')
api.add_resource(NotLikeResource, '/api/not_like/<int:video_id>')
api.add_resource(FollowResource, '/api/follow/<int:user_id>')
api.add_resource(NotFollowResource, '/api/not_follow/<int:user_id>')


if __name__ == '__main__':
    from waitress import serve
    app.run(port=8080, host='0.0.0.0')