<?php

namespace App\Services\Email;

use App\Jobs\Mail\SendTemplateEmailJob;
use App\Models\Template;
use Illuminate\Support\Facades\Cache;

/**
 * Entry point chung để gửi email theo scenario. Load Template (có cache),
 * render qua EmailTemplateRenderer, gửi qua queue (SendTemplateEmailJob).
 */
class EmailTemplateService
{
    public function __construct(
        private readonly EmailTemplateRenderer $renderer,
    ) {}

    /**
     * @param string|array<int, string> $to
     */
    public function send(string $scenario, string|array $to, array $data = []): void
    {
        SendTemplateEmailJob::dispatch($scenario, is_array($to) ? $to : [$to], $data);
    }

    /**
     * Render ngay (không gửi) — dùng cho preview trong Email Builder.
     *
     * @return array{subject: string, html: string}
     */
    public function preview(string $scenario, array $data = []): array
    {
        return $this->renderer->render($this->loadTemplate($scenario), $data);
    }

    public function loadTemplate(string $scenario): Template
    {
        return Cache::remember(
            Template::CACHE_PREFIX . $scenario,
            3600,
            fn () => Template::where('scenario', $scenario)->where('status', 1)->firstOrFail(),
        );
    }
}