"""Admin routes and panel."""
from flask import Blueprint, render_template, jsonify, request, current_app
from database import get_db
from decorators import token_required, role_required, get_user_badge

admin_bp = Blueprint('admin', __name__)


def get_socketio():
    """Get SocketIO instance from current app context."""
    return current_app.extensions.get('socketio')


@admin_bp.route('/api/admin/users', methods=['POST'])
@token_required
@role_required('Admin')
def admin_get_users():
    """Get all users (admin only)."""
    db = get_db(current_app)
    users = db.execute('SELECT id, username, is_banned FROM users').fetchall()
    result = []
    for u in users:
        ud = dict(u)
        ud['badge'] = get_user_badge(u['username'])
        result.append(ud)
    return jsonify(result)


@admin_bp.route('/api/admin/ban', methods=['POST'])
@token_required
@role_required('Admin')
def admin_ban():
    """Ban or unban a user (admin only)."""
    data = request.json
    user_id, status = data.get('user_id'), int(data.get('ban', 1))
    db = get_db(current_app)
    db.execute('UPDATE users SET is_banned = ? WHERE id = ?', (status, user_id))
    db.commit()
    
    socketio = get_socketio()
    if socketio:
        socketio.emit('user_ban_status', {'user_id': user_id, 'is_banned': status})
    
    return jsonify({'status': 'updated'})


@admin_bp.route('/api/admin/servers', methods=['POST'])
@token_required
@role_required('Admin')
def admin_get_servers():
    """Get all servers (admin only)."""
    return jsonify([dict(s) for s in get_db(current_app).execute('SELECT id, name FROM servers').fetchall()])


@admin_bp.route('/api/admin/channels', methods=['POST'])
@token_required
@role_required('Admin')
def admin_get_channels():
    """Get channels in a server (admin only)."""
    sid = request.json.get('server_id')
    return jsonify([dict(c) for c in get_db(current_app).execute(
        'SELECT id, name FROM channels WHERE server_id = ?', (sid,)
    ).fetchall()])


@admin_bp.route('/api/admin/messages', methods=['POST'])
@token_required
@role_required('Admin')
def admin_get_messages():
    """Get messages in a channel (admin only)."""
    cid = request.json.get('channel_id')
    msgs = get_db(current_app).execute(
        'SELECT m.id, m.content, m.timestamp, u.username FROM messages m JOIN users u ON m.sender_id = u.id WHERE m.channel_id = ? ORDER BY m.timestamp DESC LIMIT 100', 
        (cid,)
    ).fetchall()
    return jsonify([dict(m) for m in msgs])


@admin_bp.route('/api/admin/bulk-delete', methods=['POST'])
@token_required
@role_required('Admin')
def admin_bulk_delete():
    """Bulk delete messages (admin only)."""
    ids = request.json.get('message_ids', [])
    db = get_db(current_app)
    for mid in ids:
        db.execute('DELETE FROM messages WHERE id = ?', (mid,))
        socketio = get_socketio()
        if socketio:
            socketio.emit('delete_message', {'id': mid})
    db.commit()
    return jsonify({'deleted': len(ids)})


@admin_bp.route('/api/admin/message/<int:msg_id>', methods=['DELETE'])
@token_required
@role_required('Admin')
def admin_delete_message(msg_id):
    """Delete a single message (admin only)."""
    db = get_db(current_app)
    db.execute('DELETE FROM messages WHERE id = ?', (msg_id,))
    db.commit()
    
    socketio = get_socketio()
    if socketio:
        socketio.emit('delete_message', {'id': msg_id})
    
    return jsonify({'status': 'deleted'})


@admin_bp.route('/ihazadmin')
@token_required
@role_required('Admin')
def ihazadmin():
    """Admin panel page."""
    return render_template('admin.html')