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path: root/app/Core/Helper.php
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<?php

namespace Core;

use Pimple\Container;

/**
 * Template helpers
 *
 * @package core
 * @author  Frederic Guillot
 *
 * @property \Core\Session             $session
 * @property \Model\Acl                $acl
 * @property \Model\Config             $config
 * @property \Model\User               $user
 * @property \Model\UserSession        $userSession
 */
class Helper
{
    /**
     * Container instance
     *
     * @access protected
     * @var \Pimple\Container
     */
    protected $container;

    /**
     * Constructor
     *
     * @access public
     * @param  \Pimple\Container   $container
     */
    public function __construct(Container $container)
    {
        $this->container = $container;
    }

    /**
     * Load automatically models
     *
     * @access public
     * @param  string    $name    Model name
     * @return mixed
     */
    public function __get($name)
    {
        return $this->container[$name];
    }

    /**
     * Get the age of an item in quasi human readable format.
     * It's in this format: <1h , NNh, NNd
     *
     * @access public
     * @param  integer    $timestamp    Unix timestamp of the artifact for which age will be calculated
     * @param  integer    $now          Compare with this timestamp (Default value is the current unix timestamp)
     * @return string
     */
    public function getTaskAge($timestamp, $now = null)
    {
        if ($now === null) {
            $now = time();
        }

        $diff = $now - $timestamp;

        if ($diff < 3600) {
            return t('<1h');
        }
        else if ($diff < 86400) {
            return t('%dh', $diff / 3600);
        }

        return t('%dd', ($now - $timestamp) / 86400);
    }

    /**
     * Proxy cache helper for acl::isManagerActionAllowed()
     *
     * @access public
     * @param  integer   $project_id
     * @return boolean
     */
    public function isManager($project_id)
    {
        if ($this->userSession->isAdmin()) {
            return true;
        }

        return $this->container['memoryCache']->proxy('acl', 'isManagerActionAllowed', $project_id);
    }

    /**
     * Return the user full name
     *
     * @param  array    $user   User properties
     * @return string
     */
    public function getFullname(array $user = array())
    {
        return $this->user->getFullname(empty($user) ? $_SESSION['user'] : $user);
    }

    /**
     * HTML escaping
     *
     * @param  string   $value    Value to escape
     * @return string
     */
    public function e($value)
    {
        return htmlspecialchars($value, ENT_QUOTES, 'UTF-8', false);
    }

    /**
     * Add a Javascript asset
     *
     * @param  string   $filename   Filename
     * @return string
     */
    public function js($filename)
    {
        return '<script type="text/javascript" src="'.$filename.'?'.filemtime($filename).'"></script>';
    }

    /**
     * Add a stylesheet asset
     *
     * @param  string   $filename   Filename
     * @return string
     */
    public function css($filename, $is_file = true)
    {
        return '<link rel="stylesheet" href="'.$filename.($is_file ? '?'.filemtime($filename) : '').'" media="screen">';
    }

    /**
     * Display the form error class
     *
     * @param array   $errors   Error list
     * @param string  $name     Field name
     * @return string
     */
    public function errorClass(array $errors, $name)
    {
        return ! isset($errors[$name]) ? '' : ' form-error';
    }

    /**
     * Display a list of form errors
     *
     * @param array   $errors   List of errors
     * @param string  $name     Field name
     * @return string
     */
    public function errorList(array $errors, $name)
    {
        $html = '';

        if (isset($errors[$name])) {

            $html .= '<ul class="form-errors">';

            foreach ($errors[$name] as $error) {
                $html .= '<li>'.$this->e($error).'</li>';
            }

            $html .= '</ul>';
        }

        return $html;
    }

    /**
     * Get an escaped form value
     *
     * @param  mixed  $values  Values
     * @param  string $name    Field name
     * @return string
     */
    public function formValue($values, $name)
    {
        if (isset($values->$name)) {
            return 'value="'.$this->e($values->$name).'"';
        }

        return isset($values[$name]) ? 'value="'.$this->e($values[$name]).'"' : '';
    }

    /**
     * Hidden CSRF token field
     *
     * @return string
     */
    public function formCsrf()
    {
        return '<input type="hidden" name="csrf_token" value="'.Security::getCSRFToken().'"/>';
    }

    /**
     * Display a hidden form field
     *
     * @param  string  $name    Field name
     * @param  array   $values  Form values
     * @return string
     */
    public function formHidden($name, array $values = array())
    {
        return '<input type="hidden" name="'.$name.'" id="form-'.$name.'" '.$this->formValue($values, $name).'/>';
    }

    /**
     * Display a select field
     *
     * @param  string  $name     Field name
     * @param  array   $options  Options
     * @param  array   $values   Form values
     * @param  array   $errors   Form errors
     * @param  string  $class    CSS class
     * @return string
     */
    public function formSelect($name, array $options, array $values = array(), array $errors = array(), array $attributes = array(), $class = '')
    {
        $html = '<select name="'.$name.'" id="form-'.$name.'" class="'.$class.'" '.implode(' ', $attributes).'>';

        foreach ($options as $id => $value) {

            $html .= '<option value="'.$this->e($id).'"';

            if (isset($values->$name) && $id == $values->$name) $html .= ' selected="selected"';
            if (isset($values[$name]) && $id == $values[$name]) $html .= ' selected="selected"';

            $html .= '>'.$this->e($value).'</option>';
        }

        $html .= '</select>';
        $html .= $this->errorList($errors, $name);

        return $html;
    }

    /**
     * Display a radio field group
     *
     * @param  string  $name     Field name
     * @param  array   $options  Options
     * @param  array   $values   Form values
     * @return string
     */
    public function formRadios($name, array $options, array $values = array())
    {
        $html = '';

        foreach ($options as $value => $label) {
            $html .= $this->formRadio($name, $label, $value, isset($values[$name]) && $values[$name] == $value);
        }

        return $html;
    }

    /**
     * Display a radio field
     *
     * @param  string  $name      Field name
     * @param  string  $label     Form label
     * @param  string  $value     Form value
     * @param  boolean $selected  Field selected or not
     * @param  string  $class     CSS class
     * @return string
     */
    public function formRadio($name, $label, $value, $selected = false, $class = '')
    {
        return '<label><input type="radio" name="'.$name.'" class="'.$class.'" value="'.$this->e($value).'" '.($selected ? 'selected="selected"' : '').'> '.$this->e($label).'</label>';
    }

    /**
     * Display a checkbox field
     *
     * @param  string  $name      Field name
     * @param  string  $label     Form label
     * @param  string  $value     Form value
     * @param  boolean $checked   Field selected or not
     * @param  string  $class     CSS class
     * @return string
     */
    public function formCheckbox($name, $label, $value, $checked = false, $class = '')
    {
        return '<label><input type="checkbox" name="'.$name.'" class="'.$class.'" value="'.$this->e($value).'" '.($checked ? 'checked="checked"' : '').'>&nbsp;'.$this->e($label).'</label>';
    }

    /**
     * Display a form label
     *
     * @param  string  $name        Field name
     * @param  string  $label       Form label
     * @param  array   $attributes  HTML attributes
     * @return string
     */
    public function formLabel($label, $name, array $attributes = array())
    {
        return '<label for="form-'.$name.'" '.implode(' ', $attributes).'>'.$this->e($label).'</label>';
    }

    /**
     * Display a textarea
     *
     * @param  string  $name        Field name
     * @param  array   $values      Form values
     * @param  array   $errors      Form errors
     * @param  array   $attributes  HTML attributes
     * @param  string  $class       CSS class
     * @return string
     */
    public function formTextarea($name, $values = array(), array $errors = array(), array $attributes = array(), $class = '')
    {
        $class .= $this->errorClass($errors, $name);

        $html = '<textarea name="'.$name.'" id="form-'.$name.'" class="'.$class.'" ';
        $html .= implode(' ', $attributes).'>';
        $html .= isset($values->$name) ? $this->e($values->$name) : isset($values[$name]) ? $values[$name] : '';
        $html .= '</textarea>';
        $html .= $this->errorList($errors, $name);

        return $html;
    }

    /**
     * Display a input field
     *
     * @param  string  $type        HMTL input tag type
     * @param  string  $name        Field name
     * @param  array   $values      Form values
     * @param  array   $errors      Form errors
     * @param  array   $attributes  HTML attributes
     * @param  string  $class       CSS class
     * @return string
     */
    public function formInput($type, $name, $values = array(), array $errors = array(), array $attributes = array(), $class = '')
    {
        $class .= $this->errorClass($errors, $name);

        $html = '<input type="'.$type.'" name="'.$name.'" id="form-'.$name.'" '.$this->formValue($values, $name).' class="'.$class.'" ';
        $html .= implode(' ', $attributes).'/>';
        if (in_array('required', $attributes)) $html .= '<span class="form-required">*</span>';
        $html .= $this->errorList($errors, $name);

        return $html;
    }

    /**
     * Display a text field
     *
     * @param  string  $name        Field name
     * @param  array   $values      Form values
     * @param  array   $errors      Form errors
     * @param  array   $attributes  HTML attributes
     * @param  string  $class       CSS class
     * @return string
     */
    public function formText($name, $values = array(), array $errors = array(), array $attributes = array(), $class = '')
    {
        return $this->formInput('text', $name, $values, $errors, $attributes, $class);
    }

    /**
     * Display a password field
     *
     * @param  string  $name        Field name
     * @param  array   $values      Form values
     * @param  array   $errors      Form errors
     * @param  array   $attributes  HTML attributes
     * @param  string  $class       CSS class
     * @return string
     */
    public function formPassword($name, $values = array(), array $errors = array(), array $attributes = array(), $class = '')
    {
        return $this->formInput('password', $name, $values, $errors, $attributes, $class);
    }

    /**
     * Display an email field
     *
     * @param  string  $name        Field name
     * @param  array   $values      Form values
     * @param  array   $errors      Form errors
     * @param  array   $attributes  HTML attributes
     * @param  string  $class       CSS class
     * @return string
     */
    public function formEmail($name, $values = array(), array $errors = array(), array $attributes = array(), $class = '')
    {
        return $this->formInput('email', $name, $values, $errors, $attributes, $class);
    }

    /**
     * Display a number field
     *
     * @param  string  $name        Field name
     * @param  array   $values      Form values
     * @param  array   $errors      Form errors
     * @param  array   $attributes  HTML attributes
     * @param  string  $class       CSS class
     * @return string
     */
    public function formNumber($name, $values = array(), array $errors = array(), array $attributes = array(), $class = '')
    {
        return $this->formInput('number', $name, $values, $errors, $attributes, $class);
    }

    /**
     * Display a numeric field (allow decimal number)
     *
     * @param  string  $name        Field name
     * @param  array   $values      Form values
     * @param  array   $errors      Form errors
     * @param  array   $attributes  HTML attributes
     * @param  string  $class       CSS class
     * @return string
     */
    public function formNumeric($name, $values = array(), array $errors = array(), array $attributes = array(), $class = '')
    {
        return $this->formInput('text', $name, $values, $errors, $attributes, $class.' form-numeric');
    }

    /**
     * Link
     *
     * a('link', 'task', 'show', array('task_id' => $task_id))
     *
     * @param  string   $label       Link label
     * @param  string   $controller  Controller name
     * @param  string   $action      Action name
     * @param  array    $params      Url parameters
     * @param  boolean  $csrf        Add a CSRF token
     * @param  string   $class       CSS class attribute
     * @param  boolean  $new_tab     Open the link in a new tab
     * @return string
     */
    public function a($label, $controller, $action, array $params = array(), $csrf = false, $class = '', $title = '', $new_tab = false)
    {
        return '<a href="'.$this->u($controller, $action, $params, $csrf).'" class="'.$class.'" title="'.$title.'" '.($new_tab ? 'target="_blank"' : '').'>'.$label.'</a>';
    }

    /**
     * Generate controller/action url for templates
     *
     * u('task', 'show', array('task_id' => $task_id))
     *
     * @param  string   $controller  Controller name
     * @param  string   $action      Action name
     * @param  array    $params      Url parameters
     * @param  boolean  $csrf        Add a CSRF token
     * @return string
     */
    public function u($controller, $action, array $params = array(), $csrf = false)
    {
        $values = array(
            'controller' => $controller,
            'action' => $action,
        );

        if ($csrf) {
            $params['csrf_token'] = Security::getCSRFToken();
        }

        $values += $params;

        return '?'.http_build_query($values, '', '&amp;');
    }

    /**
     * Generate controller/action url
     *
     * l('task', 'show', array('task_id' => $task_id))
     *
     * @param  string   $controller  Controller name
     * @param  string   $action      Action name
     * @param  array    $params      Url parameters
     * @return string
     */
    public function url($controller, $action, array $params = array())
    {
        $values = array(
            'controller' => $controller,
            'action' => $action,
        );

        $values += $params;

        return '?'.http_build_query($values);
    }

    /**
     * Markdown transformation
     *
     * @param  string    $text     Markdown content
     * @param  array     $link     Link parameters for replacement
     * @return string
     */
    public function markdown($text, array $link = array())
    {
        $parser = new Markdown($link, $this);
        $parser->setMarkupEscaped(MARKDOWN_ESCAPED);        
        return $parser->text($text);
    }

    /**
     * Get the current URL without the querystring
     *
     * @return string
     */
    public function getCurrentBaseUrl()
    {
        $url = Request::isHTTPS() ? 'https://' : 'http://';
        $url .= $_SERVER['SERVER_NAME'];
        $url .= $_SERVER['SERVER_PORT'] == 80 || $_SERVER['SERVER_PORT'] == 443 ? '' : ':'.$_SERVER['SERVER_PORT'];
        $url .= dirname($_SERVER['PHP_SELF']) !== '/' ? dirname($_SERVER['PHP_SELF']).'/' : '/';

        return $url;
    }

    /**
     * Dispplay the flash session message
     *
     * @param  string   $html   HTML wrapper
     * @return string
     */
    public function flash($html)
    {
        return $this->flashMessage('flash_message', $html);
    }

    /**
     * Display the flash session error message
     *
     * @param  string    $html    HTML wrapper
     * @return string
     */
    public function flashError($html)
    {
        return $this->flashMessage('flash_error_message', $html);
    }

    /**
     * Fetch and remove a flash session message
     *
     * @access private
     * @param  string    $name    Message name
     * @param  string    $html    HTML wrapper
     * @return string
     */
    private function flashMessage($name, $html)
    {
        $data = '';

        if (isset($this->session[$name])) {
            $data = sprintf($html, $this->e($this->session[$name]));
            unset($this->session[$name]);
        }

        return $data;
    }

    /**
     * Format a file size
     *
     * @param  integer  $size        Size in bytes
     * @param  integer  $precision   Precision
     * @return string
     */
    public function formatBytes($size, $precision = 2)
    {
        $base = log($size) / log(1024);
        $suffixes = array('', 'k', 'M', 'G', 'T');

        return round(pow(1024, $base - floor($base)), $precision).$suffixes[(int)floor($base)];
    }

    /**
     * Truncate a long text
     *
     * @param  string    $value         Text
     * @param  integer   $max_length    Max Length
     * @param  string    $end           Text end
     * @return string
     */
    public function summary($value, $max_length = 85, $end = '[...]')
    {
        $length = strlen($value);

        if ($length > $max_length) {
            return substr($value, 0, $max_length).' '.$end;
        }

        return $value;
    }

    /**
     * Return true if needle is contained in the haystack
     *
     * @param  string   $haystack   Haystack
     * @param  string   $needle     Needle
     * @return boolean
     */
    public function contains($haystack, $needle)
    {
        return strpos($haystack, $needle) !== false;
    }

    /**
     * Return a value from a dictionary
     *
     * @param  mixed   $id              Key
     * @param  array   $listing         Dictionary
     * @param  string  $default_value   Value displayed when the key doesn't exists
     * @return string
     */
    public function inList($id, array $listing, $default_value = '?')
    {
        if (isset($listing[$id])) {
            return $this->e($listing[$id]);
        }

        return $default_value;
    }

    /**
     * Get javascript language code
     *
     * @access public
     * @return string
     */
    public function jsLang()
    {
        return $this->config->getJsLanguageCode();
    }

    /**
     * Get current timezone
     *
     * @access public
     * @return string
     */
    public function getTimezone()
    {
        return $this->config->getCurrentTimezone();
    }

    /**
     * Get the link to toggle subtask status
     *
     * @access public
     * @param  array   $subtask
     * @param  string  $redirect
     * @return string
     */
    public function toggleSubtaskStatus(array $subtask, $redirect)
    {
        if ($subtask['status'] == 0 && isset($this->session['has_subtask_inprogress']) && $this->session['has_subtask_inprogress'] === true) {

            return $this->a(
                trim($this->render('subtask/icons', array('subtask' => $subtask))) . $this->e($subtask['title']),
                'subtask',
                'subtaskRestriction',
                array('task_id' => $subtask['task_id'], 'subtask_id' => $subtask['id'], 'redirect' => $redirect),
                false,
                'popover task-board-popover'
            );
        }

        return $this->a(
            trim($this->render('subtask/icons', array('subtask' => $subtask))) . $this->e($subtask['title']),
            'subtask',
            'toggleStatus',
            array('task_id' => $subtask['task_id'], 'subtask_id' => $subtask['id'], 'redirect' => $redirect)
        );
    }

    /**
     * Get all hours for day
     *
     * @access public
     * @return array
     */
    public function getDayHours()
    {
        $values = array();

        foreach (range(0, 23) as $hour) {
            foreach (array(0, 30) as $minute) {
                $time = sprintf('%02d:%02d', $hour, $minute);
                $values[$time] = $time;
            }
        }

        return $values;
    }

    /**
     * Get all days of a week
     *
     * @access public
     * @return array
     */
    public function getWeekDays()
    {
        $values = array();

        foreach (range(1, 7) as $day) {
            $values[$day] = $this->getWeekDay($day);
        }

        return $values;
    }

    /**
     * Get the localized day name from the day number
     *
     * @access public
     * @param  integer   $day  Day number
     * @return string
     */
    public function getWeekDay($day)
    {
        return dt('%A', strtotime('next Monday +'.($day - 1).' days'));
    }

    /**
     * Get file icon
     *
     * @access public
     * @param  string   $filename   Filename
     * @return string               Font-Awesome-Icon-Name
     */
    public function getFileIcon($filename){

        $extension = strtolower(pathinfo($filename, PATHINFO_EXTENSION));

        switch ($extension) {
            case 'jpeg':
            case 'jpg':
            case 'png':
            case 'gif':
                return 'fa-file-image-o';
            case 'xls':
            case 'xlsx':
                return 'fa-file-excel-o';
            case 'doc':
            case 'docx':
                return 'fa-file-word-o';
            case 'ppt':
            case 'pptx':
                return 'fa-file-powerpoint-o';
            case 'zip':
            case 'rar':
                return 'fa-archive-o';
            case 'mp3':
                return 'fa-audio-o';
            case 'avi':
                return 'fa-video-o';
            case 'php':
            case 'html':
            case 'css':
                return 'fa-code-o';
            case 'pdf':
                return 'fa-file-pdf-o';
        }

        return 'fa-file-o';
    }
}