<?php

/**
 * Global functions
 */

/**
 * Check if the user is currently logged in
 *
 * @return bool
 */
function is_logged_in()
{
	return array_key_exists('hummingbird_anime_token', $_SESSION);
}

/**
 * HTML selection helper function
 *
 * @param string $a - First item to compare
 * @param string $b - Second item to compare
 * @return string
 */
function is_selected($a, $b)
{
	return ($a === $b) ? 'selected' : '';
}

/**
 * Inverse of selected helper function
 *
 * @param string $a - First item to compare
 * @param string $b - Second item to compare
 * @return string
 */
function is_not_selected($a, $b)
{
	return ($a !== $b) ? 'selected' : '';
}

/**
 * Get the base url for css/js/images
 *
 * @return string
 */
 function asset_url(/*...*/)
 {
	 global $config;

	 $args = func_get_args();
	 $base_url = rtrim($config->asset_path, '/');

	 array_unshift($args, $base_url);

	 return implode("/", $args);
 }

/**
 * Get the base url from the config
 *
 * @param string $type - (optional) The controller
 * @return string
 */
function base_url($type="anime")
{
	global $config;

	$config_path = trim($config->{"{$type}_path"}, "/");
	$config_host = $config->{"{$type}_host"};

	// Set the appropriate HTTP host
	$host = ($config_host !== '') ? $config_host : $_SERVER['HTTP_HOST'];
	$path = ($config_path !== '') ? $config_path : "";

	return implode("/", ['/', $host, $path]);
}

/**
 * Generate full url path from the route path based on config
 *
 * @param string $path - (optional) The route path
 * @param string $type - (optional) The controller (anime or manga), defaults to anime
 * @return string
 */
function full_url($path="", $type="anime")
{
	global $config;

	$config_path = trim($config->{"{$type}_path"}, "/");
	$config_host = $config->{"{$type}_host"};
	$config_default_route = $config->{"default_{$type}_path"};

	// Remove beginning/trailing slashes
	$config_path = trim($config_path, '/');
	$path = trim($path, '/');

	// Remove any optional parameters from the route
	$path = preg_replace('`{/.*?}`i', '', $path);

	// Set the appropriate HTTP host
	$host = ($config_host !== '') ? $config_host : $_SERVER['HTTP_HOST'];

	// Set the default view
	if ($path === '')
	{
		$path .= trim($config_default_route, '/');
		if ($config->default_to_list_view) $path .= '/list';
	}

	// Set an leading folder
	if ($config_path !== '')
	{
		$path = "{$config_path}/{$path}";
	}

	return "//{$host}/{$path}";
}

/**
 * Get the last segment of the current url
 *
 * @return string
 */
function last_segment()
{
	$path = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH);
	$segments = explode('/', $path);
	return end($segments);
}

// End of functions.php