<?php

namespace Openpay\Data;

class OpenpayApiDerivedResource extends OpenpayApiResourceBase {

    private $cacheList = array();

    protected static function getInstance($resourceName, $p = null) {
        if (class_exists($resourceName . 'List')) {
            $resource = $resourceName . 'List';
            return new $resource($resourceName);
        }
        return new self($resourceName);
    }

    protected function addResource($resource, $id = null) {
        if (!$id && isset($resource->id)) {
            $id = $resource->id;
        } else if (is_string($id)) {
            $id = strtolower($id);
        } else {
            $id = count($this->cacheList) + 1;
        }
        if (!$this->isResourceListed($id)) {
            $resource->parent = $this;
            $this->cacheList[$id] = $resource;
        }
    }

    protected function getResource($id) {
        $id = strtolower($id);
        if ($this->isResourceListed($id)) {
            return $this->cacheList[$id];
        }
    }

    protected function removeResource($id) {
        $id = strtolower($id);
        if ($this->isResourceListed($id)) {
            unset($this->cacheList[$id]);
        }
    }

    protected function isResourceListed($id) {
        $id = strtolower($id);
        return (isset($this->cacheList[$id]) && !empty($this->cacheList[$id]));
    }

    // ---------------------------------------------------------
    // ------------------  PUBLIC FUNCTIONS  -------------------


    public function add($params) {
        OpenpayApiConsole::trace('OpenpayApiDerivedResource @add');

        // TODO: validate call when the parent has not a valid ID
        $resource = parent::_create($this->resourceName, $params, array('parent' => $this));
        $this->addResource($resource);
        return $resource;
    }

    public function get($id) {
        OpenpayApiConsole::trace('OpenpayApiDerivedResource @get');

        if ($this->isResourceListed($id)) {
            return $this->getResource($id);
        }
        $resource = parent::_retrieve($this->resourceName, $id, array('parent' => $this));
        $this->addResource($resource);
        return $resource;
    }

    public function getList($params) {
        OpenpayApiConsole::trace('OpenpayApiDerivedResource @find');

        $list = parent::_find($this->resourceName, $params, array('parent' => $this));
        foreach ($list as $resource) {
            $this->addResource($resource);
        }
        return $list;
    }

}

?>