<?php

namespace App\Services;

use App\Models\Webhook;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;

class WebhookService
{
    public function dispatch(string $event, array $payload): void
    {
        $webhooks = Webhook::where('is_active', true)
            ->whereJsonContains('events', $event)
            ->get();

        foreach ($webhooks as $webhook) {
            $this->send($webhook, $event, $payload);
        }
    }

    private function send(Webhook $webhook, string $event, array $payload): void
    {
        $body = json_encode([
            'event'      => $event,
            'timestamp'  => now()->toIso8601String(),
            'payload'    => $payload,
        ]);

        $signature = 'sha256=' . hash_hmac('sha256', $body, $webhook->secret);

        try {
            $response = Http::timeout(8)
                ->withHeaders([
                    'Content-Type'       => 'application/json',
                    'X-Mailwolt-Event'   => $event,
                    'X-Mailwolt-Sig'     => $signature,
                ])
                ->withBody($body, 'application/json')
                ->post($webhook->url);

            $webhook->update([
                'last_triggered_at' => now(),
                'last_status'       => $response->status(),
            ]);
        } catch (\Throwable $e) {
            $webhook->update([
                'last_triggered_at' => now(),
                'last_status'       => 0,
            ]);
            Log::warning("Webhook #{$webhook->id} failed: " . $e->getMessage());
        }
    }

    public static function generateSecret(): string
    {
        return bin2hex(random_bytes(32));
    }
}