MOJAB 24

class User:
    def __init__(self, nickname, password, age):
        self.nickname = nickname
        self.password = password
        self.age = age

class Video:
    def __init__(self, name):
        self.name = name

class UserManager:
    def __init__(self):
        self.current_user = None
        self.users = []

    def register(self, nickname, password, age):
        for user in self.users:
            if user.nickname == nickname:
                print(f"کاربر {nickname} قبلا وجود دارد")
                return
        new_user = User(nickname, password, age)
        self.users.append(new_user)
        self.current_user = new_user
        print(f"کاربر {nickname} با موفقیت ثبت نام شد و وارد شد")

    def logout(self):
        self.current_user = None

    def add_videos(self, *videos):
        for video in videos:
            exists = False
            for existing_video in self.videos:
                if existing_video.name == video.name:
                    exists = True
                    break
            if not exists:
                self.videos.append(video)

    def get_videos(self, search_word):
        result = []
        for video in self.videos:
            if search_word in video.name:
                result.append(video.name)
        return result

# Example usage
user_manager = UserManager()
user_manager.register("john_doe", "password123", 25)
user_manager.add_videos(Video("Funny Cat Videos"), Video("Cooking Tutorial"))
print(user_manager.get_videos("Cat"))  # Output: ["Funny Cat Videos"]