// DATES

// return an array of 2 members, dateFrom and dateTo
function todayRange() {
    return [new Date(), new Date()];
}

function allRange() {
    return [new Date("1970-01-01"), new Date("3000-12-31")];
}

function lastMonthRange() {
    var lastDayLastMonth = new Date();
    lastDayLastMonth.setDate(1);
    lastDayLastMonth.setDate(lastDayLastMonth.getDate() - 1);
    var firstDayLastMonth = new Date(lastDayLastMonth.getFullYear(), lastDayLastMonth.getMonth(), 1);
    return [firstDayLastMonth, lastDayLastMonth];
}

function thisMonthRange() {
    var firstDayThisMonth = new Date();
    firstDayThisMonth.setDate(1);
    var lastDayThisMonth = new Date(firstDayThisMonth);
    lastDayThisMonth.setMonth(lastDayThisMonth.getMonth() + 1);
    lastDayThisMonth.setDate(lastDayThisMonth.getDate() - 1);
    return [firstDayThisMonth, lastDayThisMonth];
}

function lastYearRange() {
    var lastDayLastYear = new Date(new Date().getFullYear() - 1, 11, 31);
    var firstDayLastYear = new Date(new Date().getFullYear() - 1, 0, 1);
    return [firstDayLastYear, lastDayLastYear];
}

function thisYearRange() {
    var lastDayThisYear = new Date(new Date().getFullYear(), 11, 31);
    var firstDayThisYear = new Date(new Date().getFullYear(), 0, 1);
    return [firstDayThisYear, lastDayThisYear];
}