<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\Booking;
use App\Models\Service;
use App\Models\User;

class BookingsController extends Controller
{
    public function store(Request $request)
    {
        $validated = $request->validate([
            'service_id' => 'required|exists:services,id',
            'employee_id' => 'required|exists:users,id',
            'date' => 'required|date',
            'start_time' => 'required|date_format:H:i:s'
        ]);

        // Получаем длительность услуги
        $service = Service::findOrFail($validated['service_id']);
        $duration = $service->duration_minutes;

        // Вычисляем end_time
        $start = new \DateTime($validated['start_time']);
        $end = clone $start;
        $end->modify("+$duration minutes");
        $end_time = $end->format('H:i:s');

        // Проверяем, свободен ли слот
        $conflict = Booking::where('employee_id', $validated['employee_id'])
            ->where('booking_date', $validated['date'])
            ->where('start_time', '<', $end_time)
            ->where('end_time', '>', $validated['start_time'])
            ->exists();

        if ($conflict) {
            return response()->json(['message' => 'Слот занят'], 400);
        }

        // Создаём бронирование
        $booking = Booking::create([
            'booking_number' => 'CL-' . date('Y') . '-' . str_pad(Booking::count() + 1, 4, '0', STR_PAD_LEFT),
            'client_id' => auth()->id(),
            'employee_id' => $validated['employee_id'],
            'service_id' => $validated['service_id'],
            'booking_date' => $validated['date'],
            'start_time' => $validated['start_time'],
            'end_time' => $end_time,
            'status' => 'confirmed'
        ]);

        return response()->json($booking, 201);
    }

    public function clientIndex()
    {
        $bookings = Booking::where('client_id', auth()->id())->get();
        return response()->json($bookings);
    }

    // adminIndex
    public function adminIndex()
    {
        $bookings = Booking::with(['client', 'employee', 'service'])
            ->orderBy('booking_date', 'desc')
            ->get();
        return response()->json($bookings);
    }

    public function cancel($id)
    {
        $booking = Booking::findOrFail($id);

        if ($booking->client_id !== auth()->id()) {
            return response()->json(['message' => 'Нет прав'], 403);
        }

        $booking->update([
            'status' => 'cancelled',
            'cancelled_by' => 'client',
            'cancel_reason' => request('reason')
        ]);

        return response()->json(['message' => 'Бронь отменена']);
    }

    //  adminCancel
    public function adminCancel($id)
    {
        $booking = Booking::findOrFail($id);
        $booking->update([
            'status' => 'cancelled',
            'cancelled_by' => 'admin',
            'cancel_reason' => request('reason')
        ]);

        return response()->json(['message' => 'Бронь отменена администратором']);
    }

    //  Назначение сотрудника
    public function assignEmployee(Request $request, $id)
    {
        $request->validate(['employee_id' => 'required|exists:users,id']);

        $booking = Booking::findOrFail($id);
        $booking->employee_id = $request->employee_id;
        $booking->save();

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