import dataset
import logging
from datetime import datetime
from devplacepy.config import DATABASE_URL

logger = logging.getLogger(__name__)

db = dataset.connect(DATABASE_URL)


def init_db():
    tables = db.tables
    if "users" in tables:
        db.query("CREATE INDEX IF NOT EXISTS idx_users_username ON users (username)")
        db.query("CREATE INDEX IF NOT EXISTS idx_users_email ON users (email)")
    if "posts" in tables:
        db.query("CREATE INDEX IF NOT EXISTS idx_posts_user_uid ON posts (user_uid)")
        db.query("CREATE INDEX IF NOT EXISTS idx_posts_created_at ON posts (created_at)")
        db.query("CREATE INDEX IF NOT EXISTS idx_posts_topic ON posts (topic)")
    if "comments" in tables:
        db.query("CREATE INDEX IF NOT EXISTS idx_comments_post_uid ON comments (post_uid)")
        db.query("CREATE INDEX IF NOT EXISTS idx_comments_user_uid ON comments (user_uid)")
    if "votes" in tables:
        db.query("CREATE INDEX IF NOT EXISTS idx_votes_target ON votes (target_uid, target_type)")
    if "messages" in tables:
        db.query("CREATE INDEX IF NOT EXISTS idx_messages_sender ON messages (sender_uid)")
        db.query("CREATE INDEX IF NOT EXISTS idx_messages_receiver ON messages (receiver_uid)")
    if "notifications" in tables:
        db.query("CREATE INDEX IF NOT EXISTS idx_notifications_user ON notifications (user_uid)")
    if "sessions" in tables:
        db.query("CREATE INDEX IF NOT EXISTS idx_sessions_token ON sessions (session_token)")
    if "projects" in tables:
        db.query("CREATE INDEX IF NOT EXISTS idx_projects_user ON projects (user_uid)")
    if "badges" in tables:
        db.query("CREATE INDEX IF NOT EXISTS idx_badges_user ON badges (user_uid)")
    if "follows" in tables:
        db.query("CREATE INDEX IF NOT EXISTS idx_follows_follower ON follows (follower_uid)")
        db.query("CREATE INDEX IF NOT EXISTS idx_follows_following ON follows (following_uid)")
    if "daily_topics" in tables:
        existing = db["daily_topics"].find_one()
        if not existing:
            db["daily_topics"].insert({
                "uid": "default",
                "title": "Anthropic details how it improved Claude's safety...",
                "summary": "New techniques in AI safety research show promising results for alignment of large language models with human values.",
                "updated_at": datetime.utcnow().isoformat(),
            })
    if "password_resets" in tables:
        db.query("CREATE INDEX IF NOT EXISTS idx_password_resets_token ON password_resets (token)")
    logger.info("Database initialized")


def get_table(name):
    return db[name]


def get_daily_topic():
    topics = db["daily_topics"]
    topic = topics.find_one()
    if topic:
        return topic
    return {"title": "Anthropic details how it improved Claude's safety...", "summary": "New techniques in AI safety research show promising results."}