<?php

namespace App\Http\Resources;

use Illuminate\Database\Eloquent\Relations\Relation;
use Illuminate\Http\Request;
use Illuminate\Http\Resources\Json\JsonResource;
use RuntimeException;

class WorkflowCheckResource extends JsonResource
{
    /**
     * Transform the resource into an array.
     *
     * @return array<string, mixed>
     */
    public function toArray(Request $request): array
    {
        $resource = $this->mapResource($this->subject_type);

        return [
            'id' => $this->id,
            'check_status' => $this->check_status,
            'check_status_text' => $this->check_status?->text(),
            'checked_at' => $this->checked_at?->getTimestamp(),
            'check_remarks' => (string) $this->check_remarks,
            'employee' => EmployeeResource::make($this->whenLoaded('employee')),
            'logs' => WorkflowLogResource::collection($this->whenLoaded('logs')),
            'subject_id' => $this->subject_id,
            'subject_type' => $this->subject_type,
            'subject' => $resource::make($this->whenLoaded('subject')),
        ];
    }

    protected function mapResource(string $type)
    {
        $model = Relation::getMorphedModel($type);
        $class = match ($model) {
            default => 'App\\Http\\Resources\\'.class_basename($model).'Resource',
        };

        if (! class_exists($class)) {
            throw new RuntimeException('未知的 subject_type');
        }

        return $class;
    }
}