<?php

namespace App\Notifications;

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

class HealthCheckAlert extends Notification implements ShouldQueue
{
    use Queueable;

    /**
     * Create a new notification instance.
     */
    public function __construct(
        public HealthCheck $healthCheck,
        public string $status,
        public ?int $statusCode = null,
        public ?int $responseTime = 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 = $this->status === 'unhealthy'
            ? "Health Check Failed: {$this->healthCheck->endpoint}"
            : "Health Check Restored: {$this->healthCheck->endpoint}";

        $message = (new MailMessage)
            ->subject($subject)
            ->line("Health check alert for {$this->healthCheck->site->name}");

        if ($this->status === 'unhealthy') {
            $message->error()
                ->line("The health endpoint {$this->healthCheck->endpoint} is reporting as unhealthy.")
                ->line("This could indicate an application issue or service degradation.");

            if ($this->statusCode) {
                $message->line("HTTP Status Code: {$this->statusCode}");
            }
        } else {
            $message->success()
                ->line("The health endpoint {$this->healthCheck->endpoint} is now healthy.")
                ->line("The service has been restored.");

            if ($this->statusCode) {
                $message->line("HTTP Status Code: {$this->statusCode}");
            }

            if ($this->responseTime) {
                $message->line("Response Time: {$this->responseTime}ms");
            }
        }

        return $message
            ->line("Endpoint: {$this->healthCheck->full_url}")
            ->line("Checked at: {$this->healthCheck->last_checked_at->format('Y-m-d H:i:s')}")
            ->action('View Details', url("/sites/{$this->healthCheck->site_id}"));
    }

    /**
     * Get the array representation of the notification.
     *
     * @return array<string, mixed>
     */
    public function toArray(object $notifiable): array
    {
        return [
            'type' => 'health_check',
            'health_check_id' => $this->healthCheck->id,
            'site_id' => $this->healthCheck->site_id,
            'site_name' => $this->healthCheck->site->name,
            'endpoint' => $this->healthCheck->endpoint,
            'full_url' => $this->healthCheck->full_url,
            'status' => $this->status,
            'is_healthy' => $this->healthCheck->is_healthy,
            'status_code' => $this->statusCode,
            'response_time_ms' => $this->responseTime,
            'checked_at' => $this->healthCheck->last_checked_at,
        ];
    }
}