import logging
from flask import Blueprint, jsonify, request
from flask_login import login_required, current_user
from flask_socketio import emit, join_room, leave_room
from app import db, socketio
from app.models import Notification, Ticket, TicketStatus, TicketPriority
from app.services.log_service import log_action

api_bp = Blueprint('api', __name__, url_prefix='/api')
logger = logging.getLogger(__name__)


# ─── Notifications API ────────────────────────────────────────────────────────

@api_bp.route('/notifications/unread-count')
@login_required
def unread_count():
    count = Notification.query.filter_by(user_id=current_user.id, is_read=False).count()
    return jsonify({'count': count})


@api_bp.route('/notifications/<int:notif_id>/read', methods=['POST'])
@login_required
def mark_read(notif_id):
    notif = Notification.query.filter_by(id=notif_id, user_id=current_user.id).first_or_404()
    notif.is_read = True
    db.session.commit()
    return jsonify({'ok': True})


@api_bp.route('/notifications/mark-all-read', methods=['POST'])
@login_required
def mark_all_read():
    Notification.query.filter_by(user_id=current_user.id, is_read=False).update({'is_read': True})
    db.session.commit()
    return jsonify({'ok': True})


# ─── Ticket Stats API (IT) ────────────────────────────────────────────────────

@api_bp.route('/stats/tickets')
@login_required
def ticket_stats():
    if not current_user.is_it_staff:
        return jsonify({'error': 'Forbidden'}), 403
    stats = {
        'open'        : Ticket.query.filter_by(status=TicketStatus.OPEN).count(),
        'in_progress' : Ticket.query.filter_by(status=TicketStatus.IN_PROGRESS).count(),
        'pending'     : Ticket.query.filter_by(status=TicketStatus.PENDING).count(),
        'resolved'    : Ticket.query.filter_by(status=TicketStatus.RESOLVED).count(),
        'closed'      : Ticket.query.filter_by(status=TicketStatus.CLOSED).count(),
    }
    return jsonify(stats)


# ─── WebSocket Events ─────────────────────────────────────────────────────────

@socketio.on('connect')
def on_connect():
    if current_user.is_authenticated:
        join_room(f'user_{current_user.id}')
        logger.info(f'[SOCKET CONNECT] user_id={current_user.id}')


@socketio.on('disconnect')
def on_disconnect():
    if current_user.is_authenticated:
        leave_room(f'user_{current_user.id}')
        logger.info(f'[SOCKET DISCONNECT] user_id={current_user.id}')


@socketio.on('join_ticket')
def on_join_ticket(data):
    if current_user.is_authenticated:
        ticket_id = data.get('ticket_id')
        join_room(f'ticket_{ticket_id}')


@socketio.on('leave_ticket')
def on_leave_ticket(data):
    if current_user.is_authenticated:
        ticket_id = data.get('ticket_id')
        leave_room(f'ticket_{ticket_id}')