# ============================================
# database/users.py — المستخدمون والمشتركون
# ============================================

import logging
from database.connection import get_connection

logger = logging.getLogger(__name__)


# ════════════════════════════════════════
#   المستخدمون
# ════════════════════════════════════════

def upsert_user(user_id: int, username: str, first_name: str) -> None:
    """
    تسجيل مستخدم جديد أو تحديث بياناته إذا كان موجوداً.
    يُستدعى في كل تفاعل جديد مع البوت.
    """
    conn = get_connection()
    try:
        conn.execute("""
            INSERT INTO users (user_id, username, first_name)
            VALUES (?, ?, ?)
            ON CONFLICT(user_id) DO UPDATE SET
                username   = excluded.username,
                first_name = excluded.first_name
        """, (user_id, username or "", first_name or ""))
        conn.commit()
    except Exception as e:
        logger.error(f"خطأ في upsert_user uid={user_id}: {e}", exc_info=True)
    finally:
        conn.close()


def get_user(user_id: int) -> dict | None:
    """جلب بيانات مستخدم"""
    conn = get_connection()
    try:
        c = conn.cursor()
        c.execute("SELECT * FROM users WHERE user_id = ?", (user_id,))
        row = c.fetchone()
        return dict(row) if row else None
    except Exception as e:
        logger.error(f"خطأ في get_user uid={user_id}: {e}", exc_info=True)
        return None
    finally:
        conn.close()


def is_user_banned(user_id: int) -> bool:
    """التحقق من حظر المستخدم"""
    conn = get_connection()
    try:
        c = conn.cursor()
        c.execute(
            "SELECT is_banned FROM users WHERE user_id = ?",
            (user_id,)
        )
        row = c.fetchone()
        return bool(row["is_banned"]) if row else False
    except Exception as e:
        logger.error(f"خطأ في is_user_banned uid={user_id}: {e}", exc_info=True)
        return False
    finally:
        conn.close()


def ban_user(user_id: int) -> bool:
    """حظر مستخدم"""
    conn = get_connection()
    try:
        conn.execute(
            "UPDATE users SET is_banned = 1 WHERE user_id = ?",
            (user_id,)
        )
        conn.commit()
        affected = conn.execute(
            "SELECT changes() AS c"
        ).fetchone()["c"]
        return affected > 0
    except Exception as e:
        logger.error(f"خطأ في ban_user uid={user_id}: {e}", exc_info=True)
        return False
    finally:
        conn.close()


def unban_user(user_id: int) -> bool:
    """رفع الحظر عن مستخدم"""
    conn = get_connection()
    try:
        conn.execute(
            "UPDATE users SET is_banned = 0 WHERE user_id = ?",
            (user_id,)
        )
        conn.commit()
        affected = conn.execute(
            "SELECT changes() AS c"
        ).fetchone()["c"]
        return affected > 0
    except Exception as e:
        logger.error(f"خطأ في unban_user uid={user_id}: {e}", exc_info=True)
        return False
    finally:
        conn.close()


def get_total_users() -> int:
    """إجمالي المستخدمين المسجلين"""
    conn = get_connection()
    try:
        c = conn.cursor()
        c.execute("SELECT COUNT(*) AS cnt FROM users WHERE is_banned = 0")
        return c.fetchone()["cnt"]
    except Exception as e:
        logger.error(f"خطأ في get_total_users: {e}", exc_info=True)
        return 0
    finally:
        conn.close()


# ════════════════════════════════════════
#   المشتركون في التنبيهات
# ════════════════════════════════════════

def subscribe_user(user_id: int, platform: str = "all") -> bool:
    """
    اشتراك مستخدم في التنبيهات.
    يُرجع True إذا تم الاشتراك (لم يكن مشتركاً)،
    False إذا كان مشتركاً مسبقاً.
    """
    conn = get_connection()
    try:
        c = conn.cursor()
        c.execute("""
            INSERT OR IGNORE INTO notification_subscribers (user_id, platform)
            VALUES (?, ?)
        """, (user_id, platform))
        conn.commit()
        return c.rowcount > 0
    except Exception as e:
        logger.error(f"خطأ في subscribe_user uid={user_id}: {e}", exc_info=True)
        return False
    finally:
        conn.close()


def unsubscribe_user(user_id: int) -> bool:
    """
    إلغاء اشتراك مستخدم من التنبيهات.
    يُرجع True إذا تم الإلغاء.
    """
    conn = get_connection()
    try:
        c = conn.cursor()
        c.execute(
            "DELETE FROM notification_subscribers WHERE user_id = ?",
            (user_id,)
        )
        conn.commit()
        return c.rowcount > 0
    except Exception as e:
        logger.error(f"خطأ في unsubscribe_user uid={user_id}: {e}", exc_info=True)
        return False
    finally:
        conn.close()


def is_subscribed(user_id: int) -> bool:
    """التحقق من اشتراك مستخدم في التنبيهات"""
    conn = get_connection()
    try:
        c = conn.cursor()
        c.execute(
            "SELECT user_id FROM notification_subscribers WHERE user_id = ?",
            (user_id,)
        )
        return c.fetchone() is not None
    except Exception as e:
        logger.error(f"خطأ في is_subscribed uid={user_id}: {e}", exc_info=True)
        return False
    finally:
        conn.close()


def get_all_subscriber_ids() -> list[int]:
    """
    جلب كل IDs المشتركين في التنبيهات (غير المحظورين).
    يُستخدم من broadcaster.py لإرسال الإذاعات.
    """
    conn = get_connection()
    try:
        c = conn.cursor()
        c.execute("""
            SELECT ns.user_id
            FROM notification_subscribers ns
            JOIN users u ON ns.user_id = u.user_id
            WHERE u.is_banned = 0
            ORDER BY ns.subscribed_at ASC
        """)
        return [row["user_id"] for row in c.fetchall()]
    except Exception as e:
        logger.error(f"خطأ في get_all_subscriber_ids: {e}", exc_info=True)
        return []
    finally:
        conn.close()


def get_subscriber_count() -> int:
    """عدد المشتركين النشطين في التنبيهات"""
    conn = get_connection()
    try:
        c = conn.cursor()
        c.execute("""
            SELECT COUNT(*) AS cnt
            FROM notification_subscribers ns
            JOIN users u ON ns.user_id = u.user_id
            WHERE u.is_banned = 0
        """)
        return c.fetchone()["cnt"]
    except Exception as e:
        logger.error(f"خطأ في get_subscriber_count: {e}", exc_info=True)
        return 0
    finally:
        conn.close()


def remove_subscriber(user_id: int) -> None:
    """
    حذف مشترك من التنبيهات (يُستخدم من broadcaster عند خطأ دائم).
    مثال: المستخدم حظر البوت أو حذف حسابه.
    """
    conn = get_connection()
    try:
        conn.execute(
            "DELETE FROM notification_subscribers WHERE user_id = ?",
            (user_id,)
        )
        conn.commit()
        logger.info(f"تم إزالة المشترك {user_id} من التنبيهات (حظر أو حساب محذوف)")
    except Exception as e:
        logger.error(f"خطأ في remove_subscriber uid={user_id}: {e}", exc_info=True)
    finally:
        conn.close()


# ════════════════════════════════════════
#   سجل الإذاعات
# ════════════════════════════════════════

def log_broadcast(
    admin_id: int,
    message_text: str,
    broadcast_type: str,
    game_title: str,
    game_link: str,
    sent_count: int,
    failed_count: int,
    blocked_count: int
) -> int:
    """تسجيل نتيجة إذاعة في قاعدة البيانات. يُرجع ID السجل."""
    conn = get_connection()
    try:
        c = conn.cursor()
        c.execute("""
            INSERT INTO broadcasts
            (admin_id, message_text, broadcast_type, game_title, game_link,
             sent_count, failed_count, blocked_count)
            VALUES (?, ?, ?, ?, ?, ?, ?, ?)
        """, (
            admin_id, message_text, broadcast_type, game_title, game_link,
            sent_count, failed_count, blocked_count
        ))
        conn.commit()
        return c.lastrowid
    except Exception as e:
        logger.error(f"خطأ في log_broadcast: {e}", exc_info=True)
        return 0
    finally:
        conn.close()


def get_broadcast_history(limit: int = 10) -> list[dict]:
    """آخر N إذاعة (للمشرف)"""
    conn = get_connection()
    try:
        c = conn.cursor()
        c.execute("""
            SELECT id, broadcast_type, game_title, sent_count,
                   failed_count, blocked_count, sent_at
            FROM broadcasts
            ORDER BY id DESC
            LIMIT ?
        """, (limit,))
        return [dict(r) for r in c.fetchall()]
    except Exception as e:
        logger.error(f"خطأ في get_broadcast_history: {e}", exc_info=True)
        return []
    finally:
        conn.close()