UX improvements for LiveStrong.com's MyPlate.

myplate-improvements.tamper.js

// ==UserScript==
// @name       MyPlate Improvements
// @namespace  http://glompix.com/
// @version    0.1
// @description  A small set of improvements for LiveStrong's MyPlate app.
// @match      http://www.livestrong.com/myplate/dashboard/*
// @copyright  2014, Stuart Branham
// ==/UserScript==


var _selectedDate = Date.parse($('#mini-calendar .selected').text());
var _data = JSON.parse($('#lsapp_widget_foodlog_plan').attr('data-service'));

showFinishOnFinishedDays();
showCurrentStepOnToday();
selectNextMealForInput();

function showFinishOnFinishedDays() {
    if (!_selectedDate) {
        return;
	}
    
    var yesterday = new Date(Date.now() - 1000 * 60 * 60 * 24);
    if (_selectedDate <= yesterday) {
        $('.steps .on[data-lsapp-step="breakfast"]').each(function() {
            showMeal('finish'); 
            console.log('MYPLATE-IMPROVEMENTS: Breakfast was selected. Fixed that for you.'); 
        });
    }
}

function showCurrentStepOnToday() {
    if (!_selectedDate || !_data || !isToday()) {
        return;
    }
    
    var targetMeal;
    if (_data.data.meals.lunch.consumed_total > 0 && _data.data.meals.dinner.consumed_total > 0) {
        targetMeal = 'finish';
    }
    else if (_data.data.meals.lunch.consumed_total > 0) {
        targetMeal = 'dinner';
    }
    else {
        targetMeal = 'lunch';
    }
    if (_data.data.meals.breakfast.consumed_total === 0) {
    	targetMeal = 'breakfast';
    }
       
    if (targetMeal) {
        console.log('MYPLATE-IMPROVEMENTS: I think "' + targetMeal + '" is the meal you want to look at.'); 
        showMeal(targetMeal);
    }
}

function selectNextMealForInput() {
    if (!_selectedDate || !_data || !isToday()) {
        return;
    }
    
    var meals = ['breakfast', 'lunch', 'dinner', 'snacks'];
    for (var i = meals.length - 2; i >= 0; i--) {
        var meal = meals[i], 
            nextmeal = meals[i+1];
        if (_data.data.meals[meal].consumed_total > 0) {
            selectMeal(nextmeal);
            console.log('MYPLATE-IMPROVEMENTS: I think you want to log "' + nextmeal + '", so I selected it for you.');
            return;
        }
    }
}

function showMeal(mealname) {
    $('.steps [data-lsapp-step="' + mealname + '"]').click();
}

function selectMeal(mealname) {
    $('select[data-lsapp-key="foodLog_when"]').val(mealname);
}

function isToday() {
    return _selectedDate.toDateString() === new Date().toDateString();
}