<?php

namespace App\Services\MailFlow;

use Illuminate\Http\Client\PendingRequest;
use Illuminate\Http\Client\Response;
use Illuminate\Support\Facades\Http;

class ResendClient
{
    private function request(): PendingRequest
    {
        return Http::baseUrl('https://api.resend.com')->withToken((string) Settings::get('resend_key'))
            ->acceptJson()->connectTimeout(3)->timeout(8);
    }

    public function usage(): array
    {
        $response = $this->request()->get('/usage');
        if (!$response->successful()) {
            throw new \RuntimeException('resend_usage_unavailable');
        }
        return $response->json('emails') ?? [];
    }

    public function send(array $payload, string $key): Response
    {
        // Automatic HTTP retries would hide uncertainty; retries use the same persisted key/payload.
        return $this->request()->withHeaders(['Idempotency-Key' => $key])->post('/emails', $payload);
    }

    public function retrieve(string $id): array
    {
        $response = $this->request()->get('/emails/' . rawurlencode($id));
        if (!$response->successful()) {
            throw new \RuntimeException('resend_status_unavailable');
        }
        return $response->json();
    }
}