var DirectMail = DirectMail || {};

DirectMail.parseQueryString = function() {
	var result = {};
    var vars   = window.location.search.substring(1).split("&");

    for ( var i = 0; i < vars.length; i++ ) {
        var pair = vars[i].split("=");

		result[pair[0]] = unescape( pair[1] );
    }
	
	return result;
};

DirectMail.urlIsTrackable = function ( url ) {
	var a = document.createElement('a');
	
	a.href = url;
	
	return ( a.protocol == 'http:' || a.protocol == 'https:' );
};

$(document).ready(function() {
	var pathComponents   = window.location.pathname.split('/');
	var params           = DirectMail.parseQueryString();
	var email            = params['e'];
	var deliveryID       = pathComponents[2];
	var addressHistoryID = params['a'] || '';
	var formID           = params['f'] || '';
	var shouldTrack      = ( params['t'] == 1 );
	var hostname         = 'ethreemail.com';
	var wasForwarded     = ( params['fwd'] == 1 );
	
	$("a[href='#web-version-url']").click(function() {
		var cleanURL = window.location.href.split('?')[0];
		
		alert( "You are currently viewing the web version of this email.\n\nTo share, copy the following URL: " + cleanURL );
		return false;
	});
	
	if ( email && deliveryID ) {
		var $unsubscribeLinks = $("a[href='#unsubscribe-url']");
		var $updateEmailAddressLinks = $("a[href='#update-email-address-url']");
		
		$unsubscribeLinks.data( 'dm-intended-href', 'https://' + hostname + '/delivery-unsubscribe?d=' + deliveryID + '&e=' + email + '&a=' + addressHistoryID + '&f=' + formID );
		$updateEmailAddressLinks.data( 'dm-intended-href', 'https://' + hostname + '/delivery-update-email?d=' + deliveryID + '&e=' + email + '&a=' + addressHistoryID + '&f=' + formID );
		$("a[href='#forward-to-a-friend-url']").data( 'dm-intended-href', 'https://' + hostname + '/forward?d=' + deliveryID + '&e=' + email + '&f=' + formID );
		
		if ( wasForwarded ) {
			$unsubscribeLinks.click(function(e) {
				alert( "Don't worry, you have not been subscribed to this mailing list. This email was forwarded to you by a friend." );
				e.stopImmediatePropagation();
				return false;
			});

			$updateEmailAddressLinks.click(function(e) {
				alert( "You're not currently a member of this mailing list, so you can't update your email address. This email was forwarded to you by a friend." );
				e.stopImmediatePropagation();
				return false;
			});
		}
		
		$("a[href]").click(function() {
			var intendedHREF = $(this).data( 'dm-intended-href' );
			
			if ( !intendedHREF ) {
				intendedHREF = $(this).attr( 'href' );
			}
			
			var redirect = intendedHREF;
			var linkID   = $(this).data( 'dm-link-id' );
			
			if ( shouldTrack && linkID && DirectMail.urlIsTrackable( redirect ) ) {
				redirect = 'https://' + hostname + '/click?u=' + encodeURIComponent( intendedHREF ) + '&i=' + linkID + '&d=' + deliveryID + '&e=' + email + '&a=' + addressHistoryID + '&f=' + formID;
			}
			
			window.location.href = redirect;
			
			return false;
		});
	}
});