<?php
/**
 * For the full copyright and license information, please view the
 * docs/licenses/LICENSE.txt file that was distributed with this source code.
 */
class WebserviceOutputJSONCore implements WebserviceOutputInterface
{
    public $docUrl = '';
    public $languages = [];
    protected $wsUrl;
    protected $schemaToDisplay;

    /**
     * Current entity.
     */
    protected $currentEntity;

    /**
     * Current association.
     */
    protected $currentAssociatedEntity = [];

    /**
     * Json content.
     */
    protected $content = [];

    public function __construct($languages = [])
    {
        $this->languages = $languages;
    }

    public function setSchemaToDisplay($schema)
    {
        if (is_string($schema)) {
            $this->schemaToDisplay = $schema;
        }

        return $this;
    }

    public function getSchemaToDisplay()
    {
        return $this->schemaToDisplay;
    }

    public function setWsUrl($url)
    {
        $this->wsUrl = $url;

        return $this;
    }

    public function getWsUrl()
    {
        return $this->wsUrl;
    }

    public function getContentType()
    {
        return 'application/json';
    }

    public function renderErrors($message, $code = null)
    {
        $this->content['errors'][] = ['code' => $code, 'message' => $message];

        return '';
    }

    public function renderField($field)
    {
        $is_association = (isset($field['is_association']) && $field['is_association'] == true);

        if (is_array($field['value'])) {
            $tmp = [];
            foreach ($this->languages as $id_lang) {
                $tmp[] = ['id' => $id_lang, 'value' => $field['value'][$id_lang]];
            }
            if (count($tmp) == 1) {
                $field['value'] = $tmp[0]['value'];
            } else {
                $field['value'] = $tmp;
            }
        }
        // Case 1 : fields of the current entity (not an association)
        if (!$is_association) {
            $this->currentEntity[$field['sqlId']] = $field['value'];
        } else { // Case 2 : fields of an associated entity to the current one
            $this->currentAssociatedEntity[] = ['name' => $field['entities_name'], 'key' => $field['sqlId'], 'value' => $field['value']];
        }

        return '';
    }

    public function renderNodeHeader($node_name, $params, $more_attr = null, $has_child = true)
    {
        // api ?
        static $isAPICall = false;
        if ($node_name == 'api' && ($isAPICall == false)) {
            $isAPICall = true;
        }
        if ($isAPICall && !in_array($node_name, ['description', 'schema', 'api'])) {
            $this->content[] = $node_name;
        }
        if (isset($more_attr, $more_attr['id'])) {
            $this->content[$params['objectsNodeName']][] = ['id' => $more_attr['id']];
        }

        return '';
    }

    public function getNodeName($params)
    {
        $node_name = '';
        if (isset($params['objectNodeName'])) {
            $node_name = $params['objectNodeName'];
        }

        return $node_name;
    }

    public function renderNodeFooter($node_name, $params)
    {
        if (isset($params['objectNodeName']) && $params['objectNodeName'] == $node_name) {
            if (array_key_exists('display', $_GET)) {
                $this->content[$params['objectsNodeName']][] = $this->currentEntity;
            } else {
                $this->content[$params['objectNodeName']] = $this->currentEntity;
            }
            $this->currentEntity = [];
        }
        if (is_countable($this->currentAssociatedEntity) && count($this->currentAssociatedEntity)) {
            $current = [];
            foreach ($this->currentAssociatedEntity as $element) {
                $current[$element['key']] = $element['value'];
            }
            if (isset($element, $element['name'])) {
                $this->currentEntity['associations'][$element['name']][] = $current;
            }
            $this->currentAssociatedEntity = [];
        }
    }

    public function overrideContent($content)
    {
        array_walk($this->content, function (&$item) {
            $item = array_filter($item);
        });
        $content = json_encode($this->content, JSON_UNESCAPED_UNICODE);

        return (false !== $content) ? $content : '';
    }

    public function setLanguages($languages)
    {
        $this->languages = $languages;

        return $this;
    }

    public function renderAssociationWrapperHeader()
    {
        return '';
    }

    public function renderAssociationWrapperFooter()
    {
        return '';
    }

    public function renderAssociationHeader($obj, $params, $assoc_name, $closed_tags = false)
    {
        return '';
    }

    public function renderAssociationFooter($obj, $params, $assoc_name)
    {
    }

    public function renderErrorsHeader()
    {
        return '';
    }

    public function renderErrorsFooter()
    {
        return '';
    }

    public function renderAssociationField($field)
    {
        return '';
    }

    public function renderi18nField($field)
    {
        return '';
    }
}