/* global $, jQuery */
var messageHandler = (function(my) {

    /**
     * Shows a message to the user.
     *
     * @param titleString the title of the message
     * @param messageString the text of the message
     */
    my.openMessageDialog = function(titleString, messageString) {
        $.prompt(messageString,
            {
                title: titleString,
                persistent: false
            }
        );
    };

    /**
     * Shows a message to the user with two buttons: first is given as a parameter and the second is Cancel.
     *
     * @param titleString the title of the message
     * @param msgString the text of the message
     * @param persistent boolean value which determines whether the message is persistent or not
     * @param leftButton the fist button's text
     * @param submitFunction function to be called on submit
     * @param loadedFunction function to be called after the prompt is fully loaded
     * @param closeFunction function to be called after the prompt is closed
     */
    my.openTwoButtonDialog = function(titleString, msgString, persistent, leftButton,
                                      submitFunction, loadedFunction, closeFunction) {
        var buttons = {};
        buttons[leftButton] = true;
        buttons.Cancel = false;
        $.prompt(msgString, {
            title: titleString,
            persistent: false,
            buttons: buttons,
            defaultButton: 1,
            loaded: loadedFunction,
            submit: submitFunction,
            close: closeFunction
        });
    };

    /**
     * Shows a message to the user with two buttons: first is given as a parameter and the second is Cancel.
     *
     * @param titleString the title of the message
     * @param msgString the text of the message
     * @param persistent boolean value which determines whether the message is persistent or not
     * @param buttons object with the buttons. The keys must be the name of the button and value is the value
     * that will be passed to submitFunction
     * @param submitFunction function to be called on submit
     * @param loadedFunction function to be called after the prompt is fully loaded
     */
    my.openDialog = function (titleString,    msgString, persistent, buttons,
                              submitFunction, loadedFunction) {
        var args = {
            title: titleString,
            persistent: persistent,
            buttons: buttons,
            defaultButton: 1,
            loaded: loadedFunction,
            submit: submitFunction
        };
        if (persistent) {
            args.closeText = '';
        }
        return $.prompt(msgString, args);
    };

    /**
     * Closes currently opened dialog.
     */
    my.closeDialog = function () {
        $.prompt.close();
    };

    /**
     * Shows a dialog with different states to the user.
     *
     * @param statesObject object containing all the states of the dialog
     * @param loadedFunction function to be called after the prompt is fully loaded
     * @param stateChangedFunction function to be called when the state of the dialog is changed
     */
    my.openDialogWithStates = function(statesObject, loadedFunction, stateChangedFunction) {


        var myPrompt = $.prompt(statesObject);

        myPrompt.on('impromptu:loaded', loadedFunction);
        myPrompt.on('impromptu:statechanged', stateChangedFunction);
    };

    /**
     * Opens new popup window for given <tt>url</tt> centered over current
     * window.
     *
     * @param url the URL to be displayed in the popup window
     * @param w the width of the popup window
     * @param h the height of the popup window
     * @param onPopupClosed optional callback function called when popup window
     *        has been closed.
     *
     * @returns popup window object if opened successfully or undefined
     *          in case we failed to open it(popup blocked)
     */
    my.openCenteredPopup = function (url, w, h, onPopupClosed) {
        var l = window.screenX + (window.innerWidth / 2) - (w / 2);
        var t = window.screenY + (window.innerHeight / 2) - (h / 2);
        var popup = window.open(
            url, '_blank',
            'top=' + t + ', left=' + l + ', width=' + w + ', height=' + h + '');
        if (popup && onPopupClosed) {
            var pollTimer = window.setInterval(function () {
                if (popup.closed !== false) {
                    window.clearInterval(pollTimer);
                    onPopupClosed();
                }
            }, 200);
        }
        return popup;
    };

    /**
     * Shows a dialog prompting the user to send an error report.
     *
     * @param titleString the title of the message
     * @param msgString the text of the message
     * @param error the error that is being reported
     */
    my.openReportDialog = function(titleString, msgString, error) {
        my.openMessageDialog(titleString, msgString);
        console.log(error);
        //FIXME send the error to the server
    };

    /**
     *  Shows an error dialog to the user.
     * @param title the title of the message
     * @param message the text of the messafe
     */
    my.showError = function(title, message) {
        if(!(title || message)) {
            title = title || "Oops!";
            message = message || "There was some kind of error";
        }
        messageHandler.openMessageDialog(title, message);
    };

    my.notify = function(displayName, cls, message) {
        toastr.info(
            '<span class="nickname">' +
                displayName +
            '</span><br>' +
            '<span class=' + cls + '>' +
                message +
            '</span>');
    };

    return my;
}(messageHandler || {}));

module.exports = messageHandler;