/* Blacklight-centric event tracking for link clicks, form submissions, etc. */

$(function() {

    BlacklightGoogleAnalytics = {}

    BlacklightGoogleAnalytics.console_log_error = function(err, values){
        <% if Rails.env == 'development' %>
            // good place to log in development
            console.log(err);
            console.log(values);
        <% end %>
    };

    BlacklightGoogleAnalytics.this_or_parent_id = function(that){
        if (that.get(0).id.length > 0){
            var identifier = that.get(0).id;
        } else {
            var identifier = that.parents('[id]:first').get(0).id;
        }
        return identifier;
    };

    var category = $('body').attr('class').split(' ')[1].toString().replace(/blacklight-/,'').replace(/-/,'#');

    // generic link tracking
    $('a').click(function () {
        try {
            var action = BlacklightGoogleAnalytics.this_or_parent_id($(this));
            var label = ($(this).text() || $(this).children('img:first').attr('alt'));
            if (action === 'facets-collapse') { // for facets, make the action the facet heading
                var action = 'facet_' + $(this).parents("div:first").find("h5:first").text().trim();
            } else if (action === 'documents') { // search results
                var action = 'result_' + $(this).parents("div:first").attr('class');
                if ($(this).data('counter')) {
                    var label = $(this).data('counter');
                }
            } else if (action === 'item_metadata') { // catalog#show metadata links
                var label = $(this).parent().prev("dt").text().replace(/:/,'');
            } else if (action === 'item_breadcrumb') { // catalog#show breadcrumb
                var label = $(this).attr('class');
            } else if (action === 'institution_site_link') { // institutions#show external site URL
                var label = $('img.institution_img_show').attr('alt');
            }

            ga('send', 'event', category, action, label);
        } catch (err) {
            BlacklightGoogleAnalytics.console_log_error(err, [category, action, label]);
        }
        //BlacklightGoogleAnalytics.pause();
    });

    // "more" facet ajax-modal clicks
    BlacklightGoogleAnalytics.track_modal_facet_clicks = function () {
        $("#ajax-modal").find('a').click(function () {
            try {
                var action = 'facet_' + $('div.modal-header').find('h3').text();
                var label = $(this).text();
                ga('send', 'event', category, action, label);
            } catch (err) {
                BlacklightGoogleAnalytics.console_log_error(err, [category, action, label]);
            }
        });
    };

    // modal form submission
    BlacklightGoogleAnalytics.track_modal_form = function () {
        $("#ajax-modal").find('form').submit(function () {
            try{
                var action = 'submit_' + BlacklightGoogleAnalytics.this_or_parent_id($(this));
                ga('send', 'event', category, action);
            } catch(err) {
                BlacklightGoogleAnalytics.console_log_error(err, [category, action]);
            }
        });
    };

    // OAI item clicks
    $("#oai_img_show_container").find("a").off("click").click(function(){
        try{
            var action = 'oai_item_link';
            var label = $('#item_breadcrumb').find("a.institution_breadcrumb").text();
            ga('send', 'event', category, action, label);
        } catch(err) {
            BlacklightGoogleAnalytics.console_log_error(err, [category, action, label]);
        }
    });

    // saved searches clicks
    $("#searches_content").find("a").off("click").click(function(){
        try{
            if ($(this).attr('class')) {
                var action = $(this).attr('class');
            } else {
                var action = 'link_to_saved_search';
            }
            ga('send', 'event', category, action);
        } catch(err) {
            BlacklightGoogleAnalytics.console_log_error(err, [category, action]);
        }
    });

    // search history clicks
    $("#searches_list").find("a").off("click").click(function(){
        try{
            var action = 'link_to_previous_search';
            ga('send', 'event', category, action);
        } catch(err) {
            BlacklightGoogleAnalytics.console_log_error(err, [category, action]);
        }
    });

    // collections#show series clicks
    $("#series_wrapper").find("a").off("click").click(function(){
        try{
            var action = 'series_' + $(this).parents("div:first").attr('class');
            var label = ($(this).text() || $(this).children('img:first').attr('alt'));
            ga('send', 'event', category, action, label);
        } catch(err) {
            BlacklightGoogleAnalytics.console_log_error(err, [category, action, label]);
        }
    });

    // institutions#show collection clicks
    $("#institution_collections").find("a").off("click").click(function(){
        try{
            var action = 'collections_' + $(this).parents("div:first").attr('class');
            var label = ($(this).text() || $(this).children('img:first').attr('alt'));
            ga('send', 'event', category, action, label);
        } catch(err) {
            BlacklightGoogleAnalytics.console_log_error(err, [category, action, label]);
        }
    });

    // form submissions
    $("form").submit(function(){
        try{
            var action = BlacklightGoogleAnalytics.this_or_parent_id($(this));
            var label = "";
            if (action === "folder_item_toggle") { // add item to bookmarks
                var label = "Bookmarks";
            } else if (action === "item_actions_form") { // bookmarks/folders item delete
                var action = "removeLink";
                var label = "Remove"
            } else if (action === "hero_search_form") { // home page search
                var label = $("#search_field").val();
            }
            ga('send', 'event', category, action, label);
        } catch(err) {
            BlacklightGoogleAnalytics.console_log_error(err, [category, action, label]);
        }
    });

    // image_viewer#book_viewer button clicks
    $("#viewer").find("button").click(function(){
        try{
            var action = BlacklightGoogleAnalytics.this_or_parent_id($(this));
            var label = '';
            ga('send', 'event', category, action, label);
        } catch(err) {
            BlacklightGoogleAnalytics.console_log_error(err, [category, action, label]);
        }
    })

});