<?php

namespace App\Http\Resources\Api\Admin;

use Illuminate\Http\Request;
use Illuminate\Http\Resources\Json\JsonResource;

class ProductResource extends JsonResource
{
    public function toArray(Request $request): array
    {
        $minPrice = $this->whenLoaded('pricings', function () {
            return $this->pricings->min('price');
        });

        $osIds = $this->whenLoaded('operatingSystems', function () {
            return $this->operatingSystems->pluck('id')->toArray();
        });

        return [
            'id'           => $this->id,
            'uuid'         => $this->uuid,
            'name'         => $this->name,
            'slug'         => $this->slug,
            'thumbnail'    => $this->thumbnail,
            'product_type' => $this->product_type,
            'page_type' => $this->resolvePageType($this->product_type),
            'product_categories_id' => $this->whenLoaded('category', fn() => $this->category?->id),
            'category' => $this->whenLoaded('category', fn() => $this->category?->name),
            // Which billing_cycle values this product's category expects (drives cycle
            // pickers in the UI) — e.g. domain is annual-only, IT service can be one_time.
            'category_billing_cycles' => $this->whenLoaded('category', fn() => $this->category?->billing_cycles),
            'service_plan_id' => $this->service_plan_id,
            'cpu'          => $this->cpu,
            'ram'          => $this->ram,
            'disk'         => $this->disk,
            'bandwidth'    => $this->bandwidth,
            'domain_count' => $this->domain_count,
            'features'     => $this->features,
            'setup_fee'    => $this->setup_fee,
            'min_price'    => $minPrice,
            'billing_type' => $this->whenLoaded('pricings', function () {
                // 'one_time' (with underscore) is the convention used everywhere else in the
                // app (OrderHelper::cycleToMonths, ServiceExpiry, renewService, product_pricings
                // migration comment) — this used to check 'onetime' and never matched real rows.
                $hasOnetime  = $this->pricings->where('billing_cycle', 'one_time')->isNotEmpty();
                $hasRecurring = $this->pricings->where('billing_cycle', '!=', 'one_time')->isNotEmpty();
                return ($hasOnetime && !$hasRecurring) ? 'one_time' : 'recurring';
            }),
            'currency'           => $this->whenLoaded('pricings', fn () => $this->pricings->first()?->currency ?? 'VND'),
            'price_monthly'      => $this->whenLoaded('pricings', fn () => optional($this->pricings->firstWhere('billing_cycle', 'monthly'))->price),
            'price_quarterly'    => $this->whenLoaded('pricings', fn () => optional($this->pricings->firstWhere('billing_cycle', 'quarterly'))->price),
            'price_semiannually' => $this->whenLoaded('pricings', fn () => optional($this->pricings->firstWhere('billing_cycle', 'semi_annually'))->price),
            'price_annually'     => $this->whenLoaded('pricings', fn () => optional($this->pricings->firstWhere('billing_cycle', 'annually'))->price),
            'price_biennially'   => $this->whenLoaded('pricings', fn () => optional($this->pricings->firstWhere('billing_cycle', 'biennially'))->price),
            'price_triennially'  => $this->whenLoaded('pricings', fn () => optional($this->pricings->firstWhere('billing_cycle', 'triennially'))->price),
            'price_onetime'      => $this->whenLoaded('pricings', fn () => optional($this->pricings->firstWhere('billing_cycle', 'one_time'))->price),
            'is_active'    => $this->is_active,
            'created_at'   => $this->created_at,
            'os_ids'       => $osIds,
            'module_host_id'      => $this->module_host_id,
            'module_datastore_id' => $this->module_datastore_id,
        ];
    }

    private function resolvePageType(?string $productType): string
    {
        return match ($productType) {
            'vps', 'cloud' => 'service_vps',
            'hosting', 'email', 'ssl' => 'service_hosting',
            'domain' => 'service_domain',
            'blog' => 'blog',
            default => 'service_vps',
        };
    }
}