export const minDiff = (a: number, b: number) => Math.floor(Math.abs(b - a) / 1000 / 60);
export const daysDiff = (a: number, b: number) => Math.floor(Math.abs(b - a) / 1000 / 60 / 60 / 24) || 0;

export const getDayMinutes = (date: Date) => (date.getHours() * 60) + date.getMinutes();

export const dateRangesOverlap = (aStart: Date, aEnd: Date, bStart: Date, bEnd: Date) => {
    if (aStart <= bStart && bStart <= aEnd)
        return true; // b starts in a
    if (aStart <= bEnd && bEnd <= aEnd)
        return true; // b ends in a
    if (bStart <= aStart && aEnd <= bEnd)
        return true; // a in b
    return false;
};

export const normalizeTime = (date: Date, hours = 0, min = 0, sec = 0, ms = 0) => {
    let copy = new Date(date);
    copy.setHours(hours, min, sec, ms);
    return +copy;
};