# database/posts.py
import logging
from database.connection import get_conn

logger = logging.getLogger(__name__)


def post_exists(message_id: int, channel_id: int) -> bool:
    conn = get_conn()
    try:
        c = conn.cursor()
        c.execute(
            "SELECT id FROM posts WHERE message_id=? AND channel_id=?",
            (message_id, channel_id)
        )
        return c.fetchone() is not None
    except Exception as e:
        logger.error(f"post_exists: {e}", exc_info=True)
        return False
    finally:
        conn.close()


def insert_post(
    message_id: int,
    channel_id: int,
    channel_username: str,
    text_original: str,
    text_normalized: str,
    hashtags: str,
    platform: str,
    has_media: int,
    media_type: str,
    posted_at: str,
) -> bool:
    conn = get_conn()
    try:
        c = conn.cursor()
        c.execute("""
            INSERT OR IGNORE INTO posts
            (message_id, channel_id, channel_username, text_original,
             text_normalized, hashtags, platform, has_media, media_type, posted_at)
            VALUES (?,?,?,?,?,?,?,?,?,?)
        """, (
            message_id, channel_id, channel_username, text_original,
            text_normalized, hashtags, platform, has_media, media_type, posted_at
        ))
        conn.commit()
        inserted = c.rowcount > 0
        if inserted:
            logger.info(
                f"[DB] فُهرس msg_id={message_id} platform={platform} "
                f"text='{text_original[:40]}'"
            )
        return inserted
    except Exception as e:
        logger.error(f"insert_post: {e}", exc_info=True)
        return False
    finally:
        conn.close()


def delete_post(message_id: int, channel_id: int) -> bool:
    conn = get_conn()
    try:
        c = conn.cursor()
        c.execute(
            "DELETE FROM posts WHERE message_id=? AND channel_id=?",
            (message_id, channel_id)
        )
        conn.commit()
        return c.rowcount > 0
    except Exception as e:
        logger.error(f"delete_post: {e}", exc_info=True)
        return False
    finally:
        conn.close()


def get_total() -> int:
    conn = get_conn()
    try:
        return conn.execute("SELECT COUNT(*) FROM posts").fetchone()[0]
    except Exception:
        return 0
    finally:
        conn.close()


def get_stats_by_platform() -> list[dict]:
    conn = get_conn()
    try:
        c = conn.cursor()
        c.execute("""
            SELECT COALESCE(platform,'عام') AS platform, COUNT(*) AS cnt
            FROM posts GROUP BY platform ORDER BY cnt DESC
        """)
        return [dict(r) for r in c.fetchall()]
    except Exception:
        return []
    finally:
        conn.close()


def rebuild_fts() -> bool:
    conn = get_conn()
    try:
        conn.execute("INSERT INTO posts_fts(posts_fts) VALUES('rebuild')")
        conn.commit()
        return True
    except Exception as e:
        logger.error(f"rebuild_fts: {e}", exc_info=True)
        return False
    finally:
        conn.close()