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<?php

require_once __DIR__."/../utils/Singleton.php";

use swag\Singleton;

/**
 * Manage the swag taxonomy.
 */
class SwagMapController extends Singleton {

    /**
     * Init.
     */
    public function init() {
    }

    /**
     * Get data for rendering swagmap.
     */
    public function swagMapData($mode) {
        $nodes=array();
        $links=array();
        $swagpaths=Swagpath::findAll();
        $nodeIndexByPostId=array();

        foreach ($swagpaths as $swagpath) {
            $nodeData=NULL;

            if ($swagpath->isCurrentUserPrepared() || $mode=="full") {
                $nodeData=array(
                    "name"=>$swagpath->getPost()->post_title,
                    "type"=>"swag",
                    "completed"=>$swagpath->isCompletedByCurrentUser(),
                    "color"=>$swagpath->getDisplayColor(),
                    "url"=>get_permalink($swagpath->getPost()->ID)
                );
            }

            else if ($swagpath->isCurrentUserPreparedForPrerequisites()) {
                $nodeData=array(
                    "name"=>"?",
                    "type"=>"swag",
                    "completed"=>FALSE,
                    "color"=>"#999999",
                    "url"=>NULL
                );
            }

            if ($nodeData) {
                $nodeIndexByPostId[$swagpath->getPost()->ID]=sizeof($nodes);
                $nodes[]=$nodeData;
            }
        }

        foreach ($swagpaths as $swagpath) {
            $pres=$swagpath->getPrerequisites();
            foreach ($pres as $pre) {
                if (isset($nodeIndexByPostId[$pre->getPost()->ID]) &&
                        isset($nodeIndexByPostId[$swagpath->getPost()->ID])) {
                    $link=array(
                        "source"=>$nodeIndexByPostId[$pre->getPost()->ID],
                        "target"=>$nodeIndexByPostId[$swagpath->getPost()->ID]
                    );

                    $links[]=$link;
                }
            }
        }

        return array(
            "nodes"=>$nodes,
            "links"=>$links
        );
    }
}