// $Id: imapsync_form.js,v 1.2 2018/01/27 21:58:52 gilles Exp gilles $

/*jslint browser: true*/ /*global  $*/
$(document).ready(function () {
    "use strict";
    // Bootstrap popover and tooltip
    $("[data-toggle='tooltip']").tooltip();

    var readyStateStr = {
        "0": "Request not initialized",
        "1": "Server connection established",
        "2": "Response headers received",
        "3": "Processing request",
        "4": "Finished and response is ready"
    };

    function refreshLog(xhr) {
        $("#output").html(xhr.responseText);
    }

    function handleRun(xhr, timerRefreshLog) {

        $("#console").text("Status: " + xhr.status + " " + xhr.statusText + "\n" + "State: " + readyStateStr[xhr.readyState] + "\n");

        if (xhr.readyState === 4) {
            // var headers = xhr.getAllResponseHeaders();
            // $("#console").append(headers);
            // $("#console").append("See the completed log\n");
            $("#link_to_bottom").show();
            clearInterval(timerRefreshLog);
            refreshLog(xhr); // a last time
            $("#bt-sync").prop("disabled", false); // back to enable state for next run
        }
    }

    function imapsync() {
        var querystring = $("#form").serialize();
        $("#abort").text("\n\n"); // clean abort console
        $("#output").text("Here comes the log!\n\n");
        if ("imap.gmail.com" === $("#host1").val()) {
            querystring = querystring + "&gmail1=on";
        }
        if ("imap.gmail.com" === $("#host2").val()) {
            querystring = querystring + "&gmail2=on";
        }
        var xhr;
        xhr = new XMLHttpRequest();
        var timerRefreshLog = setInterval(function () {
            refreshLog(xhr);
        }, 5000);
        xhr.onreadystatechange = function () {
            handleRun(xhr, timerRefreshLog);
        };
        xhr.open("POST", "/cgi-bin/imapsync", true);
        xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
        xhr.send(querystring);
    }


    function handleAbort(xhr) {

        $("#abort").text("Status: " + xhr.status + " " + xhr.statusText + "\n" + "State: " + readyStateStr[xhr.readyState] + "\n\n");

        if (xhr.readyState === 4) {
            $("#abort").append(xhr.responseText);
            $("#bt-sync").prop("disabled", false);
            $("#bt-abort").prop("disabled", false); // back for next abort
        }
    }

    function abort() {
        var querystring = $("#form").serialize() + "&abort=on";
        var xhr;
        xhr = new XMLHttpRequest();
        xhr.onreadystatechange = function () {
            handleAbort(xhr);
        };
        xhr.open("POST", "/cgi-bin/imapsync", true);
        xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
        xhr.send(querystring);
    }


    // in case of a manual refresh, start
    $("#bt-sync").prop("disabled", false);
    $("#bt-abort").prop("disabled", false);
    $("#link_to_bottom").hide();

    $("#bt-sync").click(function () {
        $("#bt-sync").prop("disabled", true);
        $("#bt-abort").prop("disabled", false);
        $("#link_to_bottom").hide();
        imapsync();
    });

    $("#bt-abort").click(function () {
        $("#bt-sync").prop("disabled", true);
        $("#bt-abort").prop("disabled", true);
        abort();
    });

});