<?php

namespace App\Rules;

use App\Models\Schedule;
use Carbon\Carbon;

class ScheduleBusinessRules
{
    // Status que devem ser ignorados na validação de limite por semana
    private const EXCLUDED_STATUSES = ['cancelled', 'rejected'];

    /**
     * Valida se o prestador pode ter mais um agendamento com o cliente na semana
     * Limite: 2 agendamentos por semana (domingo a sábado)
     * 
     * @param int $clientId
     * @param int $providerId
     * @param string $date (Y-m-d)
     * @param int|null $excludeScheduleId
     * @return bool
     * @throws \Exception
     */
    public static function validateWeeklyScheduleLimit($clientId, $providerId, $date, $excludeScheduleId = null)
    {
        $date = Carbon::parse($date);
        
        $weekStart = $date->copy()->startOfWeek(Carbon::SUNDAY);
        $weekEnd = $date->copy()->endOfWeek(Carbon::SATURDAY);

        $weeklySchedulesCount = Schedule::where('client_id', $clientId)
            ->where('provider_id', $providerId)
            ->whereNotIn('status', self::EXCLUDED_STATUSES)
            ->whereBetween('date', [$weekStart->format('Y-m-d'), $weekEnd->format('Y-m-d')])
            ->when($excludeScheduleId, function ($query) use ($excludeScheduleId) {
                $query->where('id', '!=', $excludeScheduleId);
            })
            ->count();

        if ($weeklySchedulesCount >= 2) {
            throw new \Exception(__('validation.custom.schedule.weekly_limit_exceeded'));
        }

        return true;
    }
}