<?php

namespace App\Domains\Ticketing\FiestaFutbolInfantil\Resources;

use App\Domains\Commerce\Catalog\Models\CatalogItem;
use App\Domains\Commerce\Catalog\Models\Variant;
use App\Domains\Ticketing\Event\Enums\EventDateChangeType;
use App\Domains\Ticketing\Event\Enums\EventDateStatus;
use App\Domains\Ticketing\Event\Models\EventDate;
use App\Domains\Ticketing\Event\Models\EventDateChange;
use Illuminate\Http\Request;
use Illuminate\Http\Resources\Json\JsonResource;
use Illuminate\Support\Collection;

/** @mixin CatalogItem */
class FoodResource extends JsonResource
{
    /** @return array<string, mixed> */
    public function toArray(Request $request): array
    {
        if ($this->resource === null) {
            return [
                'id' => null,
                'name' => 'Comida',
                'variants' => [],
                'history' => [],
            ];
        }

        $currentVariants = $this->variants
            ->filter(fn (Variant $variant): bool => $this->isCurrent($variant));
        $historicalVariants = $this->variants
            ->filter(fn (Variant $variant): bool => $this->isHistorical($variant));

        return [
            'id' => $this->id,
            'name' => $this->nombre,
            'variants' => $currentVariants->map($this->variantData(...))->values(),
            'history' => $this->historyData($historicalVariants),
        ];
    }

    private function isCurrent(Variant $variant): bool
    {
        if ($variant->sales_disabled_at !== null || $variant->replaced_by_variant_id !== null) {
            return false;
        }

        $status = $variant->selectedEventDates()->first()?->status;

        return $status === null || in_array(
            $status,
            [EventDateStatus::Scheduled, EventDateStatus::InProgress],
            true,
        );
    }

    private function isHistorical(Variant $variant): bool
    {
        return in_array(
            $variant->selectedEventDates()->first()?->status,
            [
                EventDateStatus::Rescheduled,
                EventDateStatus::Suspended,
                EventDateStatus::Completed,
            ],
            true,
        );
    }

    /** @return array<string, mixed> */
    private function variantData(Variant $variant): array
    {
        $values = $variant->selectionValues();
        $eventDate = $variant->selectedEventDates()->first();

        return [
            'id' => $variant->id,
            'event_date_id' => $eventDate?->id,
            'event_date' => $eventDate?->date?->format('Y-m-d'),
            'schedule' => $values->get('horario'),
            'service' => $values->get('servicio'),
            'description' => $variant->descripcion,
            'stock' => $variant->inventory->real_stock,
            'price' => number_format($variant->getPrice(), 2, '.', ''),
        ];
    }

    /**
     * @param  Collection<int, Variant>  $variants
     * @return Collection<int, array<string, mixed>>
     */
    private function historyData(Collection $variants): Collection
    {
        return $variants
            ->filter(fn (Variant $variant): bool => $variant->selectedEventDates()->first() !== null)
            ->groupBy(fn (Variant $variant): int => (int) $variant->selectedEventDates()->first()->id)
            ->map(function (Collection $dateVariants): array {
                /** @var EventDate $eventDate */
                $eventDate = $dateVariants->first()->selectedEventDates()->first();
                $status = $this->historicalStatus($eventDate);
                $change = $this->changeForStatus($eventDate, $status);

                return [
                    'id' => $eventDate->id,
                    'change_id' => $change?->id,
                    'status' => $status->value,
                    'status_text' => match ($status) {
                        EventDateStatus::Rescheduled => 'REPROGRAMADA',
                        EventDateStatus::Suspended => 'CANCELADA',
                        EventDateStatus::Completed => 'FINALIZADA',
                        default => '',
                    },
                    'event_date_id' => $eventDate->id,
                    'event_date' => $eventDate->date->format('Y-m-d'),
                    'replacement_event_date_id' => $status === EventDateStatus::Rescheduled
                        ? ($change?->destination_event_date_id
                            ?? $eventDate->rescheduled_to_event_date_id)
                        : null,
                    'replacement_event_date' => $status === EventDateStatus::Rescheduled
                        ? ($change?->new_date?->format('Y-m-d')
                            ?? $eventDate->rescheduledTo?->date?->format('Y-m-d'))
                        : null,
                    'occurred_at' => ($change?->created_at ?? $eventDate->endsAt())->toISOString(),
                    'variants' => $dateVariants->map($this->variantData(...))->values(),
                ];
            })
            ->sortByDesc('occurred_at')
            ->values();
    }

    private function historicalStatus(EventDate $eventDate): EventDateStatus
    {
        return match ($eventDate->status) {
            EventDateStatus::Rescheduled => EventDateStatus::Rescheduled,
            EventDateStatus::Suspended => EventDateStatus::Suspended,
            default => EventDateStatus::Completed,
        };
    }

    private function changeForStatus(
        EventDate $eventDate,
        EventDateStatus $status,
    ): ?EventDateChange {
        $changeType = match ($status) {
            EventDateStatus::Rescheduled => EventDateChangeType::Rescheduled,
            EventDateStatus::Suspended => EventDateChangeType::Suspended,
            default => null,
        };

        return $changeType === null
            ? null
            : $eventDate->changeHistory
                ->first(fn (EventDateChange $change): bool => $change->change_type === $changeType);
    }
}