<?php

namespace App\Services;

use App\Models\CrawlShotJob;
use App\Jobs\RetryWebhookJob;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;

class WebhookService
{
    private const RETRY_DELAYS = [1, 2, 4, 8, 16, 32]; // minutes
    
    public static function send(CrawlShotJob $job): void
    {
        try {
            $payload = $job->buildStatusResponse();
            
            $response = Http::timeout(5)->post($job->webhook_url, $payload);
            
            if ($response->successful()) {
                // Reset webhook error fields on success
                $job->update([
                    'webhook_attempts' => 0,
                    'webhook_last_error' => null,
                    'webhook_next_retry_at' => null
                ]);
            } else {
                throw new \Exception("HTTP {$response->status()}: {$response->body()}");
            }
            
        } catch (\Exception $e) {
            self::handleWebhookFailure($job, $e->getMessage());
        }
    }
    
    private static function handleWebhookFailure(CrawlShotJob $job, string $error): void
    {
        $currentAttempts = $job->webhook_attempts ?? 0;
        
        if ($currentAttempts < 6) {
            $delayMinutes = self::RETRY_DELAYS[$currentAttempts];
            $nextRetryAt = now()->addMinutes($delayMinutes);
            
            $job->update([
                'webhook_attempts' => $currentAttempts + 1,
                'webhook_last_error' => $error,
                'webhook_next_retry_at' => $nextRetryAt
            ]);
            
            // Schedule retry job
            RetryWebhookJob::dispatch($job->uuid)->delay($nextRetryAt);
        } else {
            // Max attempts reached, just update error
            $job->update([
                'webhook_attempts' => $currentAttempts + 1,
                'webhook_last_error' => $error,
                'webhook_next_retry_at' => null
            ]);
        }
    }
}