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/**
 * Copyright Year
 */
function auto_copyright($year = 'auto', $attribution = NULL){
	$date = NULL;

	if ($attribution == NULL) {
		$attribution = get_bloginfo('sitename');
	} if(intval($year) == 'auto'){
		$year = date('Y');
	} if(intval($year) == date('Y')){
		$date = intval($year);
	} if(intval($year) < date('Y')){
		$date = intval($year) . ' - ' . date('Y');
	} if(intval($year) > date('Y')){
		$date = date('Y');
	}

	$copyright = "&copy; " . $date . " " . $attribution;
	return $copyright;
}

/**
 * Copyright Year Shortcode
 * eg. [copyright starting_year="2016" attribution="DMT Industrial Fabrication"]
 */
function copyright_shortcode( $atts ) {
	// Attributes
	$atts = shortcode_atts(
		array(
			'starting_year' => 'auto',
			'attribution' => NULL,
		),
		$atts,
		'copyright'
	);

	return auto_copyright($year = $atts['starting_year'], $attribution = $atts['attribution']);
}
add_shortcode( 'copyright', __NAMESPACE__ . '\\copyright_shortcode' );

/**
 * Link back to Artrageous on Homepage, no-follow on inner page
 */
function artrageous_shortcode() {
	if(is_front_page()){
		$rel = "";
	} else {
		$rel = 'rel="nofollow"';
	}
	return "<a href=\"https://artrageousadvertising.ca/\" class=\"art-link\" $rel target=\"_blank\">Made by Artrageous Advertising.</a>";
}
add_shortcode( 'artrageous', __NAMESPACE__ . '\\artrageous_shortcode' );

/**
 * Custom logo on login page
 */
function custom_login_logo() {
	$custom_logo_id = get_theme_mod( 'custom_logo' );
	$image = wp_get_attachment_image_src( $custom_logo_id , 'full' );

	if($image) {
		echo '
		<style type="text/css">
			h1 a { 
				background-image: url(' . $image[0] . ') !important;
				background-size: auto !important;
				background-position: center !important;
				background-color: #354255 !important;
				width: 100% !important;
			}
		</style>';
	}
}
add_action('login_head', __NAMESPACE__ . '\\custom_login_logo');