<?php

App::uses('AppModel', 'Model');
App::uses('RandomTool', 'Tools');

class Template extends AppModel
{
    public $actsAs = array('Containable');

    public $hasMany = array(
        'TemplateTag' => array(
            'dependent' => true,
        ),
        'TemplateElement' => array(
            'order' => 'TemplateElement.position',
            'dependent' => true,
        )
    );

    public function trimElementPositions($id)
    {
        // permissions
        $this->id = $id;
        if (!$this->exists()) {
            throw new NotFoundException(__('Invalid template.'));
        }

        $template = $this->find('first', array(
                'conditions' => array('id' => $id),
                'recursive' => -1,
                'contain' => array(
                        'TemplateElement' => array('id', 'template_id', 'position'),
                ),
                'fields' => array('id', 'org'),
        ));
        foreach ($template['TemplateElement'] as $k => &$element) {
            $element['position'] = $k+1;
        }
        $this->saveAll($template);
    }

    public function checkAuthorisation($id, $user, $write)
    {
        // fetch the bare template
        $template = $this->find('first', array(
            'conditions' => array('id' => $id),
            'recursive' => -1,
        ));

        // if not found return false
        if (empty($template)) {
            return false;
        }

        //if the user is a site admin, return the template without question
        if ($user['Role']['perm_site_admin']) {
            return $template;
        }

        if ($write) {
            // if write access is requested, check if template belongs to user's org and whether the user is authorised to edit templates
            if ($user['Organisation']['name'] == $template['Template']['org'] && $user['Role']['perm_template']) {
                return $template;
            }
            return false;
        } else {

            // if read access is requested, check if the template belongs to the user's org or alternatively whether the template is shareable
            if ($user['Organisation']['name'] == $template['Template']['org'] || $template['Template']['share']) {
                return $template;
            }
            return false;
        }
    }
}