<?php

namespace App\Services\Hosting\PanelRuntimes;

use App\Models\CustomerHostingOrder;
use App\Models\ServerAgent;
use App\Models\ServerTask;
use App\Services\Hosting\ServerAgentBootstrapService;
use Illuminate\Support\Str;
use RuntimeException;

class ServerAgentPanelRuntime
{
    public function __construct(
        private ServerAgentBootstrapService $bootstrap,
    ) {}

    public function label(): string
    {
        return 'Ladill Hosting Panel';
    }

    public function supports(CustomerHostingOrder $order): bool
    {
        return (bool) data_get($order->meta, 'server_panel_runtime.managed_stack_candidate', false);
    }

    public function ensureAgent(CustomerHostingOrder $order): ServerAgent
    {
        if (! $this->supports($order)) {
            throw new RuntimeException('This server image is not enabled for agent-backed Ladill hosting tasks.');
        }

        return $this->bootstrap->ensureBootstrap($order)['agent'];
    }

    public function queueDomainTask(CustomerHostingOrder $order, string $domain, ?string $documentRoot = null, ?string $phpVersion = null): ServerTask
    {
        return $this->queueTask($order, ServerTask::TYPE_DOMAIN_ADD, array_filter([
            'domain' => strtolower($domain),
            'document_root' => $documentRoot,
            'php_version' => $phpVersion,
        ], static fn ($value): bool => $value !== null && $value !== ''));
    }

    public function queueSslTask(CustomerHostingOrder $order, string $domain): ServerTask
    {
        return $this->queueTask($order, ServerTask::TYPE_SSL_REQUEST, [
            'domain' => strtolower($domain),
        ]);
    }

    public function queueDatabaseTask(CustomerHostingOrder $order, string $name): ServerTask
    {
        return $this->queueTask($order, ServerTask::TYPE_DATABASE_CREATE, [
            'name' => Str::lower($name),
        ]);
    }

    public function queueSiteDeleteTask(CustomerHostingOrder $order, string $domain): ServerTask
    {
        return $this->queueTask($order, ServerTask::TYPE_SITE_DELETE, [
            'domain' => strtolower($domain),
        ]);
    }

    public function queuePhpTask(CustomerHostingOrder $order, string $domain, string $phpVersion): ServerTask
    {
        return $this->queueTask($order, ServerTask::TYPE_PHP_CONFIGURE, [
            'domain' => strtolower($domain),
            'php_version' => $phpVersion,
        ]);
    }

    public function queueCronTask(
        CustomerHostingOrder $order,
        string $operation,
        ?string $name = null,
        ?string $expression = null,
        ?string $command = null,
        ?string $user = null,
    ): ServerTask {
        $taskType = match ($operation) {
            'list' => ServerTask::TYPE_CRON_LIST,
            'upsert' => ServerTask::TYPE_CRON_UPSERT,
            'remove' => ServerTask::TYPE_CRON_REMOVE,
            default => throw new RuntimeException('Unsupported cron operation.'),
        };

        return $this->queueTask($order, $taskType, array_filter([
            'name' => $name,
            'expression' => $expression,
            'command' => $command,
            'user' => $user,
        ], static fn ($value): bool => $value !== null && $value !== ''));
    }

    public function queueLogTask(CustomerHostingOrder $order, string $target, ?string $domain = null, int $lines = 120): ServerTask
    {
        return $this->queueTask($order, ServerTask::TYPE_LOG_READ, [
            'target' => $target,
            'domain' => $domain ? strtolower($domain) : null,
            'lines' => max(20, min(500, $lines)),
        ]);
    }

    public function queueFileTask(CustomerHostingOrder $order, string $operation, string $path, ?string $content = null): ServerTask
    {
        $taskType = match ($operation) {
            'list' => ServerTask::TYPE_FILE_LIST,
            'read' => ServerTask::TYPE_FILE_READ,
            'write' => ServerTask::TYPE_FILE_WRITE,
            default => throw new RuntimeException('Unsupported file operation.'),
        };

        return $this->queueTask($order, $taskType, array_filter([
            'path' => $path,
            'content' => $content,
        ], static fn ($value): bool => $value !== null));
    }

    private function queueTask(CustomerHostingOrder $order, string $type, array $payload): ServerTask
    {
        $agent = $this->ensureAgent($order);

        return ServerTask::create([
            'customer_hosting_order_id' => $order->id,
            'server_agent_id' => $agent->id,
            'type' => $type,
            'status' => ServerTask::STATUS_QUEUED,
            'payload' => $payload,
            'progress' => 0,
            'max_attempts' => 3,
            'retry_backoff_seconds' => 60,
            'stale_after_seconds' => 120,
            'queued_at' => now(),
            'available_at' => now(),
        ]);
    }
}