<?php

namespace App\Providers;

use App\Provisioning\PipelineRegistry;
use App\Services\Dns\HetznerDnsClient;
use App\Services\Dns\HttpHetznerDnsClient;
use App\Services\Monitoring\HttpMonitoringClient;
use App\Services\Monitoring\MonitoringClient;
use App\Services\Proxmox\HttpProxmoxClient;
use App\Services\Proxmox\ProxmoxClient;
use App\Services\Ssh\PhpseclibRemoteShell;
use App\Services\Ssh\RemoteShell;
use App\Services\Traefik\SshTraefikWriter;
use App\Services\Traefik\TraefikWriter;
use App\Services\Wireguard\LocalWireguardHub;
use App\Services\Wireguard\WireguardHub;
use App\Models\MaintenanceNotification;
use Illuminate\Mail\Events\MessageSending;
use Illuminate\Mail\Events\MessageSent;
use Illuminate\Support\Facades\Event;
use Illuminate\Support\ServiceProvider;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     */
    public function register(): void
    {
        $this->app->singleton(PipelineRegistry::class, fn () => new PipelineRegistry(
            config('provisioning.pipelines', []),
        ));

        // Real I/O implementations; tests swap in fakes via app()->instance().
        $this->app->bind(RemoteShell::class, PhpseclibRemoteShell::class);
        $this->app->bind(WireguardHub::class, LocalWireguardHub::class);
        $this->app->bind(ProxmoxClient::class, HttpProxmoxClient::class);
        $this->app->bind(HetznerDnsClient::class, HttpHetznerDnsClient::class);
        $this->app->bind(TraefikWriter::class, SshTraefikWriter::class);
        $this->app->bind(MonitoringClient::class, HttpMonitoringClient::class);
    }

    /**
     * Bootstrap any application services.
     */
    public function boot(): void
    {
        // Suppress a queued maintenance announcement if its window was cancelled
        // before the job runs — otherwise a delayed announcement could arrive for
        // an already-cancelled window. Returning false aborts the send.
        Event::listen(MessageSending::class, function (MessageSending $event) {
            $header = $event->message->getHeaders()->get('X-CP-Notification');
            if ($header === null) {
                return null;
            }
            $notification = MaintenanceNotification::query()->with('window')->find((int) $header->getBodyAsString());
            if ($notification?->event === 'announcement' && $notification->window?->state === 'cancelled') {
                return false; // window cancelled meanwhile — do not deliver
            }

            return null;
        });

        // Stamp a maintenance-notification ledger row as delivered only once the
        // mail is actually sent (the X-CP-Notification header carries the id).
        // Until then sent_at stays null → the row is a retryable marker.
        Event::listen(MessageSent::class, function (MessageSent $event) {
            $header = $event->message->getHeaders()->get('X-CP-Notification');
            if ($header === null) {
                return;
            }
            MaintenanceNotification::query()->whereKey((int) $header->getBodyAsString())->update(['sent_at' => now()]);
        });
    }
}