<?php

namespace Pterodactyl\Transformers\Api\Application;

use Pterodactyl\Models\Node;
use Pterodactyl\Services\Acl\Api\AdminAcl;

class NodeTransformer extends BaseTransformer
{
    /**
     * List of resources that can be included.
     *
     * @var array
     */
    protected $availableIncludes = ['allocations', 'location', 'servers'];

    /**
     * Return the resource name for the JSONAPI output.
     */
    public function getResourceName(): string
    {
        return Node::RESOURCE_NAME;
    }

    /**
     * Return a node transformed into a format that can be consumed by the
     * external administrative API.
     */
    public function transform(Node $model): array
    {
        $response = $model->toArray();

        $response[$model->getUpdatedAtColumn()] = $this->formatTimestamp($model->updated_at);
        $response[$model->getCreatedAtColumn()] = $this->formatTimestamp($model->created_at);

        $resources = $model->servers()->select(['memory', 'disk'])->get();

        $response['allocated_resources'] = [
            'memory' => $resources->sum('memory'),
            'disk' => $resources->sum('disk'),
        ];

        return $response;
    }

    /**
     * Return the nodes associated with this location.
     *
     * @return \League\Fractal\Resource\Collection|\League\Fractal\Resource\NullResource
     *
     * @throws \Pterodactyl\Exceptions\Transformer\InvalidTransformerLevelException
     */
    public function includeAllocations(Node $node)
    {
        if (!$this->authorize(AdminAcl::RESOURCE_ALLOCATIONS)) {
            return $this->null();
        }

        $node->loadMissing('allocations');

        return $this->collection(
            $node->getRelation('allocations'),
            $this->makeTransformer(AllocationTransformer::class),
            'allocation'
        );
    }

    /**
     * Return the nodes associated with this location.
     *
     * @return \League\Fractal\Resource\Item|\League\Fractal\Resource\NullResource
     *
     * @throws \Pterodactyl\Exceptions\Transformer\InvalidTransformerLevelException
     */
    public function includeLocation(Node $node)
    {
        if (!$this->authorize(AdminAcl::RESOURCE_LOCATIONS)) {
            return $this->null();
        }

        $node->loadMissing('location');

        return $this->item(
            $node->getRelation('location'),
            $this->makeTransformer(LocationTransformer::class),
            'location'
        );
    }

    /**
     * Return the nodes associated with this location.
     *
     * @return \League\Fractal\Resource\Collection|\League\Fractal\Resource\NullResource
     *
     * @throws \Pterodactyl\Exceptions\Transformer\InvalidTransformerLevelException
     */
    public function includeServers(Node $node)
    {
        if (!$this->authorize(AdminAcl::RESOURCE_SERVERS)) {
            return $this->null();
        }

        $node->loadMissing('servers');

        return $this->collection(
            $node->getRelation('servers'),
            $this->makeTransformer(ServerTransformer::class),
            'server'
        );
    }
}