<?php

namespace App\Http\Controllers;

use App\Models\Notification;
use Illuminate\Http\Request;

class NotificationController extends Controller
{
    /**
     * Get all notifications for current user
     */
    public function index(Request $request)
    {
        $userId = $request->user()->id;

        $notifications = Notification::where('user_id', $userId)
            ->orderBy('created_at', 'desc')
            ->paginate($request->input('per_page', 20));

        return response()->json($notifications);
    }

    /**
     * Get unread count
     */
    public function unreadCount(Request $request)
    {
        $count = Notification::where('user_id', $request->user()->id)
            ->where('is_read', false)
            ->count();

        return response()->json(['unread_count' => $count]);
    }

    /**
     * Mark notification as read
     */
    public function markAsRead(Request $request, $id)
    {
        $notification = Notification::where('user_id', $request->user()->id)
            ->where('id', $id)
            ->firstOrFail();

        $notification->markAsRead();

        return response()->json([
            'message' => 'Notification marked as read',
            'notification' => $notification
        ]);
    }

    /**
     * Mark all notifications as read
     */
    public function markAllAsRead(Request $request)
    {
        Notification::where('user_id', $request->user()->id)
            ->where('is_read', false)
            ->update([
                'is_read' => true,
                'read_at' => now()
            ]);

        return response()->json(['message' => 'All notifications marked as read']);
    }

    /**
     * Delete a notification
     */
    public function destroy(Request $request, $id)
    {
        $notification = Notification::where('user_id', $request->user()->id)
            ->where('id', $id)
            ->firstOrFail();

        $notification->delete();

        return response()->json(['message' => 'Notification deleted']);
    }

    /**
     * Clear all notifications
     */
    public function clearAll(Request $request)
    {
        Notification::where('user_id', $request->user()->id)->delete();

        return response()->json(['message' => 'All notifications cleared']);
    }

    /**
     * Create notification (internal use)
     */
    public static function createNotification($userId, $type, $title, $message, $data = null)
    {
        return Notification::create([
            'user_id' => $userId,
            'type' => $type,
            'title' => $title,
            'message' => $message,
            'data' => $data,
        ]);
    }
}