<?php

namespace App\Rules;

use App\Models\Provider;
use App\Models\ProviderBlockedDay;
use App\Models\ProviderWorkingDay;
use App\Models\Schedule;
use App\Models\ScheduleProposal;
use Carbon\Carbon;
use Illuminate\Support\Facades\Log;

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;
    }
    
    /**
      * Valida se o prestador tem horário de trabalho cadastrado para o dia da semana e período
      * @param int $provider_id
      * @param int $day_of_week (0 - domingo, 6 - sábado)
      * @param string $period ('morning' ou 'afternoon')
      * @return bool
      * @throws \Exception
    */
    public static function validateWorkingDay($provider_id, $day_of_week, $period)
    {
      $workingDay = ProviderWorkingDay::where('provider_id', $provider_id)
        ->where('day', $day_of_week)
        ->where('period', $period)
        ->first();

      if(!$workingDay) {
        throw new \Exception(__('validation.custom.schedule.provider_not_working'));
      }

      return true;
    }

    /**
      * Valida se o prestador tem bloqueio cadastrado para o dia e horário
      * @param int $provider_id
      * @param string $date_ymd (Y-m-d)
      * @param string $start_time (H:i:s)
      * @param string $end_time (H:i:s)
      * @return bool
      * @throws \Exception
    */
    public static function validateBlockedDay($provider_id, $date_ymd, $start_time, $end_time)
    {
      $blockedDay = ProviderBlockedDay::where('provider_id', $provider_id)
        ->where('date', $date_ymd)
        ->where(function ($query) use ($start_time, $end_time) {
          $query->where('period', 'full')
            ->orWhere(function ($q) use ($start_time, $end_time) {
              $q->where('period', 'partial')
                ->where(function ($q2) use ($start_time, $end_time) {
                  $q2->whereBetween('init_hour', [$start_time, $end_time])
                    ->orWhereBetween('end_hour', [$start_time, $end_time])
                    ->orWhere(function ($q3) use ($start_time, $end_time) {
                      $q3->where('init_hour', '<=', $start_time)
                        ->where('end_hour', '>=', $end_time);
                    });
                });
            });
        })
        ->first();

      if ($blockedDay) {
        throw new \Exception(__('validation.custom.schedule.provider_blocked'));
      }

      return true;
    }

    public static function validatePricePeriod($provider_id, $min_price, $max_price, $period_type)
    {
      if ($min_price < 0 || $max_price < 0) {
        throw new \Exception(__('validation.custom.schedule.invalid_price'));
      }

      if ($min_price > $max_price) {
        throw new \Exception(__('validation.custom.schedule.invalid_price_range'));
      }

      $provider = Provider::find($provider_id);
      $provider_price_period = 0;
      switch ($period_type):
        case '2': //2 horas
          $provider_price_period = $provider->daily_price_2h;
          break;
        case '4': //4 horas
          $provider_price_period = $provider->daily_price_4h;
          break;
        case '6': //6 horas
          $provider_price_period = $provider->daily_price_6h;
          break;
        case '8': //8 horas
          $provider_price_period = $provider->daily_price_8h;
          break;
        default:
          throw new \Exception(__('validation.custom.schedule.invalid_period_type'));
        endswitch;

      if ($provider_price_period < $min_price || $provider_price_period > $max_price) {
        throw new \Exception(__('validation.custom.schedule.price_not_in_range'));
      }

      return true;
    }

    /**
      * Valida se o prestador tem outro agendamento no mesmo dia e horário
      * @param int $provider_id
      * @param string $date_ymd (Y-m-d)
      * @param string $start_time (H:i:s)
      * @param string $end_time (H:i:s)
      * @param int|null $exclude_schedule_id (id do agendamento a ser excluído da validação, usado para edição de agendamento)
      * @return bool
      * @throws \Exception
    */
    public static function validateConflictingSchedule($provider_id, $date_ymd, $start_time, $end_time, $exclude_schedule_id = null)
    {
      $conflictingSchedule = Schedule::where('provider_id', $provider_id)
        ->where('date', $date_ymd)
        ->whereIn('status', ['pending', 'accepted', 'paid', 'started'])
        ->where(function ($query) use ($start_time, $end_time) {
          $query->whereBetween('start_time', [$start_time, $end_time])
            ->orWhereBetween('end_time', [$start_time, $end_time])
            ->orWhere(function ($q) use ($start_time, $end_time) {
              $q->where('start_time', '<=', $start_time)
                ->where('end_time', '>=', $end_time);
            });
        })
        ->when($exclude_schedule_id, function ($query) use ($exclude_schedule_id) {
          $query->where('id', '!=', $exclude_schedule_id);
        })
        ->first();

      if ($conflictingSchedule) {
        throw new \Exception(__('validation.custom.schedule.provider_conflicting_schedule'));
      }

      return true;
    }

    /**
      * Valida se o prestador tem outro agendamento com o mesmo cliente no mesmo dia e horário
      * @param int $provider_id
      * @param string $date_ymd (Y-m-d)
      * @param string $start_time (H:i:s)
      * @param string $end_time (H:i:s)
      * @param int|null $exclude_schedule_id (id do agendamento a ser excluído da validação, usado para edição de agendamento)
      * @return bool
      * @throws \Exception
    */
    public static function validateConflictingSameProposal($provider_id, $schedule_id)
    {
      $conflictingSameProposal = ScheduleProposal::where('schedule_proposals.provider_id', $provider_id)
        ->where('schedule_proposals.schedule_id', $schedule_id)
        ->leftJoin('schedules', 'schedule_proposals.schedule_id', '=', 'schedules.id')
        ->whereNotIn('schedules.status', self::EXCLUDED_STATUSES)
        ->first();

      if ($conflictingSameProposal) {
        throw new \Exception(__('validation.custom.schedule.provider_conflicting_same_proposal'));
      }

      return true;
    }

    /**
      * Valida se o prestador tem outro agendamento com o mesmo cliente no mesmo dia e horário, ignorando o horário
      * @param int $provider_id
      * @param string $date_ymd (Y-m-d)
      * @param string $start_time (H:i:s)
      * @param string $end_time (H:i:s)
      * @param int|null $exclude_schedule_id (id do agendamento a ser excluído da validação, usado para edição de agendamento)
      * @return bool
      * @throws \Exception
    */
    public static function validateConflictingProposalSameDate($provider_id, $date_ymd, $start_time, $end_time, $exclude_schedule_id = null)
    {
      $conflictingProposalSameDate = ScheduleProposal::where('schedule_proposals.provider_id', $provider_id)
        ->leftJoin('schedules', 'schedule_proposals.schedule_id', '=', 'schedules.id')
        ->where('schedules.date', $date_ymd)
        ->where(function ($query) use ($start_time, $end_time) {
          $query->whereBetween('schedules.start_time', [$start_time, $end_time])
            ->orWhereBetween('schedules.end_time', [$start_time, $end_time])
            ->orWhere(function ($q) use ($start_time, $end_time) {
              $q->where('schedules.start_time', '<=', $start_time)
                ->where('schedules.end_time', '>=', $end_time);
            });
        })
        ->whereNotIn('status', self::EXCLUDED_STATUSES)
        ->when($exclude_schedule_id, function ($query) use ($exclude_schedule_id) {
          $query->where('schedules.id', '!=', $exclude_schedule_id);
        })
        ->first();

      if ($conflictingProposalSameDate) {
        throw new \Exception(__('validation.custom.schedule.provider_conflicting_proposal_same_date'));
      }

      return true;
    }
}