define(function() {
    var stack = [];

    return {
        pop: function(pageid) {
            if (!pageid) return stack.pop();

            var pageids = this.getAllPrevPageIds();

            stack.splice(pageids.lastIndexOf(pageid) + 1, stack.length);
        },
        push: function() {
            return stack.push.apply(stack, arguments);
        },
        getPrevPage: function() {
            return stack[stack.length - 2];
        },
        getAllPrevPages: function () {
            return stack.slice(0, stack.length - 1);
        },
        getAllPrevPageIds: function() {
            return this.getAllPrevPages().map(function (page) {
                return page.id
            });
        }
    };
});