from tinydb import TinyDB, Query

# Initialize TinyDB as a NoSQL key-value store
DB_FILE = "database.json"
db = TinyDB(DB_FILE)
User = Query()

def get_user_profile(user_id):
    """Fetch user profile from TinyDB"""
    result = db.search(User.user_id == user_id)
    return result[0] if result else None

def update_user_profile(user_id, name, followers, bio, posts):
    """Update user profile in TinyDB"""
    db.upsert({"user_id": user_id, "name": name, "followers": followers, "bio": bio, "posts": posts}, User.user_id == user_id)

def init_db():
    """Ensure TinyDB is initialized before FastAPI starts and prepopulate some data"""
    global db
    db = TinyDB(DB_FILE)  # Reload TinyDB if needed

    # Prepopulate database with some sample users if empty
    if len(db) == 0:
        db.insert_multiple([
            {"user_id": "1", "name": "Alice", "followers": 100, "bio": "Love coding!", "posts": "Hello, world!"},
            {"user_id": "2", "name": "Bob", "followers": 200, "bio": "Tech enthusiast", "posts": "AI is amazing!"},
            {"user_id": "3", "name": "Charlie", "followers": 50, "bio": "Blogger", "posts": "Check out my latest post!"}
        ])