<?php

namespace App\Repositories;

use App\Enumerations\EatingHabit;
use App\Models\Event;
use App\Models\EventParticipant;
use Illuminate\Http\Request;

class EventParticipantRepository {
    public function getForList(Event $event, Request $request, bool $signedOffParticipants = false) : array {
        $participants = [];

        if (!$signedOffParticipants) {
            $allParticipants = $event->participants()->whereNull('unregistered_at');
        } else {
            $allParticipants = $event->participants()->whereNotNull('unregistered_at');
        }

        foreach ($allParticipants->orderBy('lastname')->orderBy('firstname')->get() as $participant) {
            $participants[] = $participant->toResource()->toArray($request);
        };

        return $participants;
    }

    public function getByIdentifier(string $identifier, EventRepository $eventRepository, bool $withPermissionCheck = true) : ?EventParticipant {
        $participant = EventParticipant::where('identifier', $identifier)->first();
        if ($participant === null) {
            return null;
        }

        if ($withPermissionCheck) {
            $event = $eventRepository->getById($participant->event_id);
            if ($event === null) {
                return null;
            }
        }
        return $participant;
    }

    public function groupByLocalGroup(Event $event, Request $request, ?string $filter = null) : array {
        $allParticipants = $this->getForList($event, $request);
        $participants = [];
        foreach ($allParticipants as $participant) {
            if ($filter === null || $participant['localgroup'] === $filter) {
                $participants[$participant['localgroup']][] = $participant;
            }
        }

        return $participants;
    }

    public function groupByParticipationType(Event $event, Request $request, ?string $filter = null) : array {
        $allParticipants = $this->getForList($event, $request);
        $participants = [];
        foreach ($allParticipants as $participant) {
            if ($filter === null || $participant['participationType'] === $filter) {
                $participants[$participant['participationType']][] = $participant;
            }
        }

        return $participants;
    }

    public function getSignedOffParticipants(Event $event, Request $request, ?string $filter = null) : array {
        $allParticipants = $this->getForList($event, $request, true);
        $participants = [];
        foreach ($allParticipants as $participant) {
            if ($filter === null || $participant['participationType'] === $filter) {
                $participants[$participant['participationType']][] = $participant;
            }
        }

        return $participants;
    }

    public function getParticipantsWithMissingPayments(Event$event, Request $request) : array {
        $participants = [];
        foreach ($event->participants()->whereNull('unregistered_at')
                     ->whereColumn('amount', '<>', 'amount_paid')
                     ->get() as $participant) {
            $participants[] = $participant;
        };

        return $participants;
    }

    public function getParticipantsWithIntolerances(Event $event, Request $request) : array {
        $participants = [];
        foreach ($event->participants()->whereNotNull('intolerances')->whereNot('intolerances' , '=', '')->get() as $participant) {
            $participants[] = $participant->toResource()->toArray($request);
        };

        return $participants;
    }

    public function getKitchenOverview(Event $event) : array {
        $data = [];
        $participants = $event->participants()->get();


        for ($cur_date = $event->start_date; $cur_date <= $event->end_date; $cur_date->modify('+1 day')) {
            $dateKey = $cur_date->format('d.m.Y');

            $data[$dateKey] = [
                '1' => [],
                '2' => [],
                '3' => [],
            ];

            foreach (EatingHabit::all() as $eatingHabit) {
                $data[$dateKey]['1'][$eatingHabit->slug] = 0;
                $data[$dateKey]['2'][$eatingHabit->slug] = 0;
                $data[$dateKey]['3'][$eatingHabit->slug] = 0;
            }

            foreach ($participants as $participant) {
                $eatingHabitSlug = $participant->eating_habit;
                if ($eatingHabitSlug === null) {
                    continue;
                }

                $anreise = $participant->arrival_date;
                $abreise = $participant->departure_date;

                if ($anreise->getTimestamp() === $cur_date->getTimestamp()) {
                    switch ((int)$participant->arrival_eating) {
                        case 1:
                            $data[$dateKey]['3'][$eatingHabitSlug]++;
                            break;
                        case 2:
                            $data[$dateKey]['2'][$eatingHabitSlug]++;
                            $data[$dateKey]['3'][$eatingHabitSlug]++;
                            break;
                        case 3:
                            $data[$dateKey]['1'][$eatingHabitSlug]++;
                            $data[$dateKey]['2'][$eatingHabitSlug]++;
                            $data[$dateKey]['3'][$eatingHabitSlug]++;
                            break;
                    }
                } elseif ($abreise->getTimestamp() === $cur_date->getTimestamp()) {
                    switch ((int)$participant->departure_eating) {
                        case 1:
                            $data[$dateKey]['1'][$eatingHabitSlug]++;
                            break;
                        case 2:
                            $data[$dateKey]['1'][$eatingHabitSlug]++;
                            $data[$dateKey]['2'][$eatingHabitSlug]++;
                            break;
                        case 3:
                            $data[$dateKey]['1'][$eatingHabitSlug]++;
                            $data[$dateKey]['2'][$eatingHabitSlug]++;
                            $data[$dateKey]['3'][$eatingHabitSlug]++;
                            break;
                    }
                } else {
                    $data[$dateKey]['1'][$eatingHabitSlug]++;
                    $data[$dateKey]['2'][$eatingHabitSlug]++;
                    $data[$dateKey]['3'][$eatingHabitSlug]++;
                }
            }
        }

        return $data;
    }

    public function getMailAddresses(array $participants) : array {
        $mailAddresses = [];
        foreach ($participants as $participant) {
            if (!in_array($participant['email_1'], $mailAddresses)) {
                $mailAddresses[] = $participant['email_1'];
            }

            if ($participant['email_2'] !== null && !in_array($participant['email_2'], $mailAddresses)) {
                $mailAddresses[] = $participant['email_2'];
            }
        }
        return $mailAddresses;
    }

    public function getMyParticipations(?int $maxEvents = null) : array {
        $participations = [];
        $user = auth()->user();
        if ($user === null) {
            return $participations;
        }

        $request = new \Illuminate\Http\Request();

        $query = EventParticipant::where('user_id', $user->id)
            ->whereNull('unregistered_at')
            ->whereHas('event', function ($q) {
                $q->where('end_date', '>=', now());
            })
            ->with(['event'])
            ->join('events', 'event_participants.event_id', '=', 'events.id')
            ->orderBy('events.start_date', 'asc')
            ->select('event_participants.*');

        if ($maxEvents !== null) {
            $query->limit($maxEvents);
        }

        foreach ($query->get() as $participant) {
            $participations[] = $participant->toResource()->toArray($request);
        }

        return $participations;
    }

    public function getMyParticipationByIdentifier(string $identifier) : ?EventParticipant {
        $user = auth()->user();
        if ($user === null) {
            return null;
        }

        return EventParticipant::where('identifier', $identifier)
            ->where('tenant', app('tenant')->slug)
            ->where('user_id', $user->id)
            ->whereNull('unregistered_at')
            ->first();
    }
}