function OnInit(initData) {
    initData.name = 'CycleListers';
    initData.version = '2024-07-05';
    initData.url = 'https://resource.dopus.com/t/cyclelisters-cycle-through-listers/51247';
    initData.desc = 'Cycle through Listers';
    initData.default_enable = true;
    initData.min_version = '12.0';
}

function OnAddCommands(addCmdData) {
    var cmd = addCmdData.AddCommand();
    cmd.name = 'CycleListers';
    cmd.method = 'OnCycleListers';
    cmd.desc = 'Cycle through Listers';
    cmd.label = 'CycleListers';
    cmd.template = '' +
        'lastactive/s,' +
        'reverse/s,' +
        'onlycurrentdesktop/s';
    cmd.hide = false;
    cmd.icon = 'script';
}

function OnCycleListers(scriptCmdData) {
    if (DOpus.listers.count < 2) return;

    var cmd = scriptCmdData.func.command;
    var args = scriptCmdData.func.args;
    var vec = DOpus.Create().Vector();
    var listerToActivate;

    cmd.deselect = false;

    if (args.lastactive &&
        DOpus.vars.Exists('lastLister') &&
        DOpus.vars.Get('lastLister') != String(DOpus.listers.lastactive) &&
        ListerExists(DOpus.vars.Get('lastLister'))) {
        listerToActivate = DOpus.vars.Get('lastLister');
    } else {
        for (var i = 0; i < DOpus.listers.count; i++) {
            var item = DOpus.listers(i);

            if (args.onlycurrentdesktop &&
                item.desktop != DOpus.listers.lastactive.desktop) continue;

            var listerID = Number(String(item)); // the lister's HWND
            vec.push_back(listerID);

            if (item.lastactive) var lastActiveListerID = listerID;
        }

        if (vec.count < 2) return;

        vec.sort();

        var k = 0;
        while (vec(k) != lastActiveListerID) k++;

        if (args.reverse) {
            k--;
            if (k < 0) k = vec.count - 1;
        } else {
            k++;
            if (k == vec.count) k = 0;
        }

        listerToActivate = vec(k);
    }

    cmd.SetSourceTab(DOpus.listers(listerToActivate).activetab);
    cmd.RunCommand('Set LISTERCMD=tofront');
}

function OnActivateLister(activateListerData) {
    DOpus.vars.Set('listerCount', DOpus.listers.count);  // reference as {$glob:listerCount} or Val("$glob:listerCount")
    if (!activateListerData.active) {
        DOpus.vars.Set('lastLister', String(activateListerData.lister));
    }
    var cmd = DOpus.Create().Command();
    cmd.UpdateToggle();
}

function ListerExists(listerID) {
    for (var i = 0; i < DOpus.listers.count; i++) {
        if (String(DOpus.listers(i)) == String(listerID)) return true;
    }
    return false;
}