* @license GNU General Public License, version 2 (GPL-2.0)
 *
 * For full copyright and license information, please see
 * the docs/CREDITS.txt file.
 *
 */
namespace phpbb\group;
use phpbb\auth\auth;
use phpbb\cache\service as cache;
use phpbb\config\config;
use phpbb\language\language;
use phpbb\event\dispatcher_interface;
use phpbb\path_helper;
use phpbb\user;
class helper
{
	/** @var auth */
	protected $auth;
	/** @var cache */
	protected $cache;
	/** @var config */
	protected $config;
	/** @var language */
	protected $language;
	/** @var dispatcher_interface */
	protected $dispatcher;
	/** @var path_helper */
	protected $path_helper;
	/** @var user */
	protected $user;
	/** @var string phpBB root path */
	protected $phpbb_root_path;
	/** @var array Return templates for a group name string */
	protected $name_strings;
	/**
	 * Constructor
	 *
	 * @param auth					$auth			Authentication object
	 * @param cache					$cache			Cache service object
	 * @param config				$config			Configuration object
	 * @param language				$language		Language object
	 * @param dispatcher_interface	$dispatcher		Event dispatcher object
	 * @param path_helper			$path_helper	Path helper object
	 * @param user					$user			User object
	 */
	public function __construct(auth $auth, cache $cache, config $config, language $language, dispatcher_interface $dispatcher, path_helper $path_helper, user $user)
	{
		$this->auth = $auth;
		$this->cache = $cache;
		$this->config = $config;
		$this->language = $language;
		$this->dispatcher = $dispatcher;
		$this->path_helper = $path_helper;
		$this->user = $user;
		$this->phpbb_root_path = $path_helper->get_phpbb_root_path();
		/** @html Group name spans and links for usage in the template */
		$this->name_strings = array(
			'base_url'				=> "{$path_helper->get_phpbb_root_path()}memberlist.{$path_helper->get_php_ext()}?mode=group&g={GROUP_ID}",
			'tpl_noprofile'			=> '{GROUP_NAME}',
			'tpl_noprofile_colour'	=> '{GROUP_NAME}',
			'tpl_profile'			=> '{GROUP_NAME}',
			'tpl_profile_colour'	=> '{GROUP_NAME}',
		);
	}
	/**
	 * @param $group_name string	The stored group name
	 *
	 * @return string		Group name or translated group name if it exists
	 */
	public function get_name($group_name)
	{
		return $this->language->is_set('G_' . utf8_strtoupper($group_name)) ? $this->language->lang('G_' . utf8_strtoupper($group_name)) : $group_name;
	}
	/**
	 * Get group name details for placing into templates.
	 *
	 * @html Group name spans and links
	 *
	 * @param string	$mode				Profile (for getting an url to the profile),
	 *											group_name (for obtaining the group name),
	 *											colour (for obtaining the group colour),
	 *											full (for obtaining a coloured group name link to the group's profile),
	 *											no_profile (the same as full but forcing no profile link)
	 * @param int		$group_id			The group id
	 * @param string	$group_name			The group name
	 * @param string	$group_colour		The group colour
	 * @param mixed		$custom_profile_url	optional parameter to specify a profile url. The group id gets appended to this url as &g={group_id}
	 *
	 * @return string A string consisting of what is wanted based on $mode.
	 */
	public function get_name_string($mode, $group_id, $group_name, $group_colour = '', $custom_profile_url = false)
	{
		$s_is_bots = ($group_name === 'BOTS');
		// This switch makes sure we only run code required for the mode
		switch ($mode)
		{
			case 'full':
			case 'no_profile':
			case 'colour':
				// Build correct group colour
				$group_colour = $group_colour ? '#' . $group_colour : '';
				// Return colour
				if ($mode === 'colour')
				{
					$group_name_string = $group_colour;
					break;
				}
			// no break;
			case 'group_name':
				// Build correct group name
				$group_name = $this->get_name($group_name);
				// Return group name
				if ($mode === 'group_name')
				{
					$group_name_string = $group_name;
					break;
				}
			// no break;
			case 'profile':
				// Build correct profile url - only show if not anonymous and permission to view profile if registered user
				// For anonymous the link leads to a login page.
				if ($group_id && !$s_is_bots && ($this->user->data['user_id'] == ANONYMOUS || $this->auth->acl_get('u_viewprofile')))
				{
					$profile_url = ($custom_profile_url !== false) ? $custom_profile_url . '&g=' . (int) $group_id : str_replace(array('={GROUP_ID}', '=%7BGROUP_ID%7D'), '=' . (int) $group_id, append_sid($this->name_strings['base_url']));
				}
				else
				{
					$profile_url = '';
				}
				// Return profile
				if ($mode === 'profile')
				{
					$group_name_string = $profile_url;
					break;
				}
			// no break;
		}
		if (!isset($group_name_string))
		{
			if (($mode === 'full' && empty($profile_url)) || $mode === 'no_profile' || $s_is_bots)
			{
				$group_name_string = str_replace(array('{GROUP_COLOUR}', '{GROUP_NAME}'), array($group_colour, $group_name), (!$group_colour) ? $this->name_strings['tpl_noprofile'] : $this->name_strings['tpl_noprofile_colour']);
			}
			else
			{
				$group_name_string = str_replace(array('{PROFILE_URL}', '{GROUP_COLOUR}', '{GROUP_NAME}'), array($profile_url, $group_colour, $group_name), (!$group_colour) ? $this->name_strings['tpl_profile'] : $this->name_strings['tpl_profile_colour']);
			}
		}
		$name_strings = $this->name_strings;
		/**
		 * Use this event to change the output of the group name
		 *
		 * @event core.modify_group_name_string
		 * @var string	mode				profile|group_name|colour|full|no_profile
		 * @var int		group_id			The group identifier
		 * @var string	group_name			The group name
		 * @var string	group_colour		The group colour
		 * @var string	custom_profile_url	Optional parameter to specify a profile url.
		 * @var string	group_name_string	The string that has been generated
		 * @var array	name_strings		Array of original return templates
		 * @since 3.2.8-RC1
		 */
		$vars = array(
			'mode',
			'group_id',
			'group_name',
			'group_colour',
			'custom_profile_url',
			'group_name_string',
			'name_strings',
		);
		extract($this->dispatcher->trigger_event('core.modify_group_name_string', compact($vars)));
		return $group_name_string;
	}
	/**
	 * Get group rank title and image
	 *
	 * @html Group rank image element
	 *
	 * @param array		$group_data		The current stored group data
	 *
	 * @return array					An associative array containing the rank title (title),
	 * 									the rank image as full img tag (img) and the rank image source (img_src)
	 */
	public function get_rank($group_data)
	{
		$group_rank_data = array(
			'title'		=> null,
			'img'		=> null,
			'img_src'	=> null,
		);
		/**
		 * Preparing a group's rank before displaying
		 *
		 * @event core.get_group_rank_before
		 * @var	array	group_data		Array with group's data
		 * @since 3.2.8-RC1
		 */
		$vars = array('group_data');
		extract($this->dispatcher->trigger_event('core.get_group_rank_before', compact($vars)));
		if (!empty($group_data['group_rank']))
		{
			// Only obtain ranks if group rank is set
			$ranks = $this->cache->obtain_ranks();
			if (isset($ranks['special'][$group_data['group_rank']]))
			{
				$rank = $ranks['special'][$group_data['group_rank']];
				$group_rank_data['title'] = $rank['rank_title'];
				$group_rank_data['img_src'] = (!empty($rank['rank_image'])) ? $this->path_helper->update_web_root_path($this->phpbb_root_path . $this->config['ranks_path'] . '/' . $rank['rank_image']) : '';
				/** @html Group rank image element for usage in the template */
				$group_rank_data['img'] = (!empty($rank['rank_image'])) ? '
' : '';
			}
		}
		/**
		 * Modify a group's rank before displaying
		 *
		 * @event core.get_group_rank_after
		 * @var	array	group_data		Array with group's data
		 * @var	array	group_rank_data	Group rank data
		 * @since 3.2.8-RC1
		 */
		$vars = array(
			'group_data',
			'group_rank_data',
		);
		extract($this->dispatcher->trigger_event('core.get_group_rank_after', compact($vars)));
		return $group_rank_data;
	}
	/**
	 * Get group avatar.
	 * Wrapper function for phpbb_get_group_avatar()
	 *
	 * @param array		$group_row		Row from the groups table
	 * @param string	$alt			Optional language string for alt tag within image, can be a language key or text
	 * @param bool		$ignore_config	Ignores the config-setting, to be still able to view the avatar in the UCP
	 * @param bool		$lazy			If true, will be lazy loaded (requires JS)
	 *
	 * @return string 					Avatar html
	 */
	function get_avatar($group_row, $alt = 'GROUP_AVATAR', $ignore_config = false, $lazy = false)
	{
		return phpbb_get_group_avatar($group_row, $alt, $ignore_config, $lazy);
	}
}