<?php

namespace App\Http\Resources;

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

class JobResource extends JsonResource
{
    /**
     * Transform the resource into an array.
     *
     * @return array<string, mixed>
     */
    public function toArray(Request $request): array
    {
        return [
            'id' => $this->id,
            'external_id' => $this->external_id,
            'title' => $this->title,
            'company' => $this->company,
            'description' => $this->description,
            'location' => $this->location,
            'salary' => [
                'min' => $this->salary_min,
                'max' => $this->salary_max,
                'currency' => $this->salary_currency,
                'formatted' => $this->formatSalary(),
            ],
            'job_type' => $this->job_type,
            'remote_allowed' => $this->remote_allowed,
            'experience_level' => $this->experience_level,
            'source' => new JobSourceResource($this->whenLoaded('source')),
            'category' => new JobCategoryResource($this->whenLoaded('category')),
            'job_location' => new JobLocationResource($this->whenLoaded('jobLocation')),
            'urls' => [
                'source' => $this->source_url,
                'apply' => $this->apply_url,
            ],
            'dates' => [
                'posted_at' => $this->posted_at?->toIso8601String(),
                'expires_at' => $this->expires_at?->toIso8601String(),
                'created_at' => $this->created_at->toIso8601String(),
                'updated_at' => $this->updated_at->toIso8601String(),
            ],
        ];
    }

    /**
     * Format salary range for display
     */
    private function formatSalary(): ?string
    {
        if (!$this->salary_min && !$this->salary_max) {
            return null;
        }

        $currency = $this->salary_currency ?? 'USD';
        $symbol = $currency === 'USD' ? '$' : $currency . ' ';

        if ($this->salary_min && $this->salary_max) {
            return $symbol . number_format($this->salary_min, 0) . ' - ' . $symbol . number_format($this->salary_max, 0);
        }

        if ($this->salary_min) {
            return $symbol . number_format($this->salary_min, 0) . '+';
        }

        return 'Up to ' . $symbol . number_format($this->salary_max, 0);
    }
}