Searches for Redmine messages in the inbox and returns the links to the tasks. Use with the HTML version of GMail: https://mail.google.com/?ui=html‎

gmail-redmine-task-list.js

// gmail-redmine-task-list.js
//
// Searches for Redmine messages in the inbox
// and returns the links to the tasks
//
// Use with the HTML version of GMail:
// https://mail.google.com/?ui=html‎

var query = "redmine in:inbox";
var redmine_url = "https://redmine.example.com/"

function loadJS(src, callback) {
    var s = document.createElement('script');
    s.src = src;
    s.async = true;
    s.onreadystatechange = s.onload = function() {
        var state = s.readyState;
        if (!callback.done && (!state || /loaded|complete/.test(state))) {
            callback.done = true;
            callback();
        }
    };
    document.getElementsByTagName('head')[0].appendChild(s);
}

function get_redmine_tasks() {
    var tasks = [];
    var offset_increment = 20;
    var task_id_re = /#(\d+)/;

    function process_page(offset) {
        console.log("Loading… (offset=" + offset + ")");
        // Load search results for the given query
        jQuery.get(
            window.location.pathname,
            {"s": "q", "q": query, "st": offset}
        ).done(function(data) {
            var html = jQuery(data);
            // Look for Redmine task IDs in the subjects of the messages
            html.find("span.ts b").each(function (index, val) {
                var matches = val.innerHTML.match(task_id_re);
                if (matches && matches.length == 2 && jQuery.inArray(matches[1], tasks) == -1) {
                    // Add the task’s ID if the subject matches the expected
                    // format and the task’s ID has not been added to the
                    // list already.
                    tasks.push(matches[1]);
                }
            });
            offset += offset_increment;
            if (html.find("a[href$='st=" + offset + "']").length == 2) {
                // If there are links to the next page, continue processing
                process_page(offset);
            } else {
                // Otherwise print the list of task IDs
                console.log("All results loaded.")
                jQuery.each(tasks, function(index, val) {
                    console.log(redmine_url + "issues/" + val);
                });
            }
        });
    }

    // Process the first page
    process_page(0);
}

loadJS("https://code.jquery.com/jquery-1.10.2.min.js", get_redmine_tasks);