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<?php

/**
 * MvcCore
 *
 * This source file is subject to the BSD 3 License
 * For the full copyright and license information, please view
 * the LICENSE.md file that are distributed with this source code.
 *
 * @copyright   Copyright (c) 2016 Tom Flidr (https://github.com/mvccore)
 * @license  https://mvccore.github.io/docs/mvccore/5.0.0/LICENCE.md
 */

namespace MvcCore\View;

trait DirectoryMethods {

    /**
     * @inheritDocs
     * @return string|NULL
     */
    public function GetCurrentViewFullPath () {
        $result = NULL;
        $renderedFullPaths = & $this->__protected['renderedFullPaths'];
        $count = count($renderedFullPaths);
        if ($count > 0)
            $result = $renderedFullPaths[$count - 1];
        return $result;
    }

    /**
     * @inheritDocs
     * @return string|NULL
     */
    public function GetCurrentViewDirectory () {
        $result = $this->GetCurrentViewFullPath();
        $lastSlashPos = mb_strrpos($result, '/');
        if ($lastSlashPos !== FALSE) {
            $result = mb_substr($result, 0, $lastSlashPos);
        }
        return $result;
    }

    /**
     * @inheritDocs
     * @return string|NULL
     */
    public function GetParentViewFullPath () {
        $result = NULL;
        $renderedFullPaths = & $this->__protected['renderedFullPaths'];
        $count = count($renderedFullPaths);
        if ($count > 1) {
            $result = $renderedFullPaths[$count - 2];
        } else {
            $controller = $this->controller;
            $parentCtrl = $controller->GetParentController();
            if ($parentCtrl !== NULL) {
                while (TRUE) {
                    $parentCtrlView = $parentCtrl->GetView();
                    if ($parentCtrlView === NULL) {
                        $parentCtrl->GetParentController();
                        if ($parentCtrl === NULL) break;
                    }
                    $result = $parentCtrlView->GetCurrentViewFullPath();
                    if ($result !== NULL) break;
                }
            }
            if ($result === NULL) {
                $relativePath = $this->correctRelativePath(static::$layoutsDir, $controller->GetLayout());
                return static::GetViewScriptFullPath(static::$layoutsDir, $relativePath);
            }
        }
        return $result;
    }

    /**
     * @inheritDocs
     * @return string|NULL
     */
    public function GetParentViewDirectory () {
        $result = $this->GetParentViewFullPath();
        $lastSlashPos = mb_strrpos($result, '/');
        if ($lastSlashPos !== FALSE) {
            $result = mb_substr($result, 0, $lastSlashPos);
        }
        return $result;
    }
}