<?php

namespace App\Notifications;

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

class DnsRecordAlert extends Notification implements ShouldQueue
{
    use Queueable;

    /**
     * Create a new notification instance.
     */
    public function __construct(
        public DnsRecord $dnsRecord,
        public string $status,
        public ?array $actualValue = null,
        public ?string $errorMessage = null
    ) {}

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

    /**
     * Get the mail representation of the notification.
     */
    public function toMail(object $notifiable): MailMessage
    {
        $subject = $this->status === 'invalid'
            ? "DNS Record Invalid: {$this->dnsRecord->domain}"
            : "DNS Record Restored: {$this->dnsRecord->domain}";

        $message = (new MailMessage)
            ->subject($subject);

        if ($this->status === 'invalid') {
            $message->error()
                ->line("DNS record validation failed for {$this->dnsRecord->record_type} record of {$this->dnsRecord->domain}")
                ->line("This could indicate a DNS configuration issue or propagation delay.");

            if ($this->errorMessage) {
                $message->line("Error: {$this->errorMessage}");
            } elseif ($this->actualValue && $this->dnsRecord->expected_value) {
                $actualFormatted = is_array($this->actualValue) ? implode(', ', $this->actualValue) : $this->actualValue;
                $message->line("Expected: {$this->dnsRecord->expected_value}")
                    ->line("Actual: {$actualFormatted}");
            }
        } else {
            $message->success()
                ->line("DNS record for {$this->dnsRecord->record_type} of {$this->dnsRecord->domain} is now valid.")
                ->line("The DNS configuration has been restored.");

            if ($this->actualValue) {
                $actualFormatted = is_array($this->actualValue) ? implode(', ', $this->actualValue) : $this->actualValue;
                $message->line("Current value: {$actualFormatted}");
            }
        }

        return $message
            ->line("Domain: {$this->dnsRecord->domain}")
            ->line("Record Type: {$this->dnsRecord->record_type}")
            ->line("Checked at: {$this->dnsRecord->last_checked_at->format('Y-m-d H:i:s')}")
            ->action('View Details', url("/sites/{$this->dnsRecord->site_id}/dns-records/{$this->dnsRecord->id}"));
    }

    /**
     * Get the array representation of the notification.
     *
     * @return array<string, mixed>
     */
    public function toArray(object $notifiable): array
    {
        return [
            'type' => 'dns_record',
            'dns_record_id' => $this->dnsRecord->id,
            'site_id' => $this->dnsRecord->site_id,
            'site_name' => $this->dnsRecord->site->name,
            'domain' => $this->dnsRecord->domain,
            'record_type' => $this->dnsRecord->record_type,
            'status' => $this->status,
            'is_valid' => $this->dnsRecord->is_valid,
            'expected_value' => $this->dnsRecord->expected_value,
            'actual_value' => $this->actualValue,
            'error_message' => $this->errorMessage,
            'checked_at' => $this->dnsRecord->last_checked_at,
        ];
    }
}