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Ascending/Descending LITE
Author: jordanhg
Description Source Code Launch App Current Users
Created by: Jordanhg
// vars
var last_tip_username = null;
var next_tip_amount = 1;
var goal_reached = false;
// var version = 10

// Limit goal description as we add some text
cb.settings_choices = [
    { name: 'goal_description', type: 'str', minLength: 1, maxLength: 190 },
    { name: 'goal_value',       type: 'int', minValue:  1, maxValue:  100, default: 50 },
    { name: 'order',            type: 'choice',
         choice1: 'ascending',
         choice2: 'descending',
         default: 'ascending' }
];


cb.onTip(
    function (tip) {
        var diff = tip['amount'];
        while ((diff > 0) && (!checkGoalReached())) {
            diff -= next_tip_amount;
            if (diff >= 0) {
                // We set the last tipper only if the tip was counted
                // (not optimal to do it as many times as the tip counted though)
                last_tip_username = tip['from_user'];
                setNextTipNeeded();
            }
        }

        update_subject();
        cb.drawPanel();
    }
);


cb.onDrawPanel(
    function (user) {
        if (checkGoalReached()) {
            return {
                'template':   '3_rows_11_21_31',
                'row1_value': 'Goal reached!',
                'row2_value': '',
                'row3_value': 'Thanks to all tippers'
            };
        } else {
            if (isAscendingOrder()) {
                return {
                    'template':   '3_rows_of_labels',
                    'row1_label': 'Next Tip Needed:',
                    'row1_value': next_tip_amount,
                    'row2_label': 'Last Tip From:',
                    'row2_value': format_username(last_tip_username),
                    'row3_label': 'Ascending:',
                    'row3_value': 'From 1 to ' + cb.settings.goal_value
                };
            } else {
                return {
                    'template':   '3_rows_of_labels',
                    'row1_label': 'Next Tip Needed:',
                    'row1_value': next_tip_amount,
                    'row2_label': 'Last Tip From:',
                    'row2_value': format_username(last_tip_username),
                    'row3_label': 'Descending:',
                    'row3_value': 'From ' + cb.settings.goal_value + ' to 0'
                };
            }
        }
    }
);

// helper functions
function update_subject() {
    if (goal_reached) {
        return;
    }

    var new_subject = "";
    if (checkGoalReached()) {
        new_subject = cb.settings.goal_description + " [Goal reached! Thanks to all tippers.]";
        goal_reached = true;
    } else {
        if (isAscendingOrder()) {
            new_subject = cb.settings.goal_description +
                " [" + cb.settings.goal_value + " goal. Remaining " + next_tip_amount + "]";
        } else {
            new_subject = cb.settings.goal_description +
                " [Remaining tips: " + next_tip_amount + "]";
        }
    }

    cb.changeRoomSubject(new_subject);
}

function format_username(val) {
    if (val === null) {
        return "--";
    } else {
        return val.substring(0, 12);
    }
}

function isAscendingOrder() {
    return (cb.settings.order == 'ascending');
}

function setNextTipNeeded() {
    if (isAscendingOrder()) {
        next_tip_amount++;
    } else {
        next_tip_amount--;
    }
}

function checkGoalReached() {
    if (isAscendingOrder()) {
        return (next_tip_amount > cb.settings.goal_value);
    } else {
        return (next_tip_amount <= 0);
    }
}

function init() {
    if (isAscendingOrder()) {
        next_tip_amount = 1;
    } else {
        next_tip_amount = cb.settings.goal_value;
    }

    update_subject();
}

init();