<?php

namespace App\Notifications;

use App\Models\Site;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Notifications\Messages\MailMessage;
use Illuminate\Notifications\Notification;

class BrokenLinkAlert extends Notification implements ShouldQueue
{
    use Queueable;

    /**
     * Create a new notification instance.
     */
    public function __construct(
        public Site $site,
        public array $brokenLinks
    ) {
    }

    /**
     * Get the notification's delivery channels.
     *
     * @return array<int, string>
     */
    public function via(object $notifiable): array
    {
        $preferences = $notifiable->notification_preferences ?? [];
        $channels = $preferences['broken_links'] ?? ['mail'];

        return $channels;
    }

    /**
     * Get the mail representation of the notification.
     */
    public function toMail(object $notifiable): MailMessage
    {
        $brokenLinkCount = count($this->brokenLinks);

        $message = (new MailMessage)
            ->warning()
            ->subject("⚠️ Broken Links Detected: {$this->site->name}")
            ->line("We detected **{$brokenLinkCount}** broken link(s) on **{$this->site->name}**.")
            ->line("Site URL: {$this->site->url}")
            ->line('')
            ->line('**Broken Links:**');

        // Add up to 10 broken links to the email
        $displayLimit = min(10, $brokenLinkCount);
        foreach (array_slice($this->brokenLinks, 0, $displayLimit) as $link) {
            $message->line("• {$link['url']} (HTTP {$link['status_code']})");
        }

        if ($brokenLinkCount > $displayLimit) {
            $remaining = $brokenLinkCount - $displayLimit;
            $message->line("... and {$remaining} more");
        }

        $message->line('')
            ->action('View All Broken Links', url("/sites/{$this->site->id}/broken-links"))
            ->line('Please fix these broken links to improve user experience and SEO.');

        return $message;
    }

    /**
     * Get the array representation of the notification.
     *
     * @return array<string, mixed>
     */
    public function toArray(object $notifiable): array
    {
        return [
            'site_id' => $this->site->id,
            'site_name' => $this->site->name,
            'site_url' => $this->site->url,
            'broken_link_count' => count($this->brokenLinks),
            'broken_links' => $this->brokenLinks,
        ];
    }
}