<?php

namespace App\Http\Controllers;

use App\Models\RoomType;
use App\Models\RoomAvailability;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Validation\ValidationException;

class RoomAvailabilityController extends Controller
{
    public function index(Request $request, $roomTypeId)
    {
        $roomType = RoomType::findOrFail($roomTypeId);

        $from = $request->query('from');
        $to = $request->query('to');

        if (!$from || !$to) {
            throw ValidationException::withMessages([
                'from' => ['The from date is required.'],
                'to' => ['The to date is required.'],
            ]);
        }

        $fromDate = \DateTime::createFromFormat('Y-m-d', $from);
        $toDate = \DateTime::createFromFormat('Y-m-d', $to);

        if (!$fromDate || !$toDate) {
            throw ValidationException::withMessages([
                'from' => ['Invalid from date format. Use YYYY-MM-DD.'],
                'to' => ['Invalid to date format. Use YYYY-MM-DD.'],
            ]);
        }

        if ($fromDate > $toDate) {
            throw ValidationException::withMessages([
                'from' => ['From date must be before to date.'],
            ]);
        }

        $availabilities = RoomAvailability::where('room_type_id', $roomTypeId)
            ->whereBetween('date', [$from, $to])
            ->orderBy('date')
            ->get();

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

    public function bulkUpdate(Request $request, $roomTypeId)
    {
        $roomType = RoomType::findOrFail($roomTypeId);

        $validated = $request->validate([
            'data' => 'required|array',
            'data.*.date' => 'required|date_format:Y-m-d|after_or_equal:today',
            'data.*.is_available' => 'required|boolean',
            'data.*.price_override' => 'nullable|numeric|min:0',
        ]);

        DB::beginTransaction();

        try {
            foreach ($validated['data'] as $item) {
                RoomAvailability::updateOrCreate(
                    [
                        'room_type_id' => $roomTypeId,
                        'date' => $item['date'],
                    ],
                    [
                        'is_available' => $item['is_available'],
                        'price_override' => $item['price_override'] ?? null,
                    ]
                );
            }

            DB::commit();

            return response()->json(['message' => 'Availability updated successfully']);
        } catch (\Exception $e) {
            DB::rollback();
            throw $e;
        }
    }
}