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/**
 * 开始时间，结束时间
 * isOnlyWorkDay 工作时间是否只计算工作日
 * 婚假这些周六周日都算进去的 事假这些就不算周末
 */
(function() {

var MILLISECONDS_OF_MINUTE = 60 * 1000;
var MILLISECONDS_OF_DAY = 24 * 60 * MILLISECONDS_OF_MINUTE;

var startWorkMinutes = 570, // 九点半
    //
    endWorkMinutes = 1080;

// 返回天
function holiday(start, end, isOnlyWorkDay) {

    var ret = 0;

    if (start >= end) {
        return ret;
    }


    var minutes = 0,
        formType = $("[name=formTypeId]").val(),
        // 加班
        isOvertime = formType == "12";
        startTime = start.getTime(),
        endTime = end.getTime();

    if (isOvertime) {
        isOnlyWorkDay = true;
    }

    var date;


    // 在同一天内
    if (isInSameDay(start, end)) {

        if (!isRest(start, isOnlyWorkDay)) {
            minutes += getWorkTime({
                start: start,
                end: end
            });
        }

    } else {
        if (!isRest(start, isOnlyWorkDay)) {
            minutes += getWorkTime({
                start: start
            });
        }

        while (startTime < endTime) {
            startTime += MILLISECONDS_OF_DAY;
            date = new Date(startTime);

            if (isInSameDay(date, end)) {
                break;
            } else {
                if (!isRest(date, isOnlyWorkDay)) {
                    minutes += endWorkMinutes - startWorkMinutes;
                }
            }
        }

        if (!isRest(end, isOnlyWorkDay)) {
            minutes += getWorkTime({
                end: end
            });
        }
    }

    // 加班时间反一下
    if (isOvertime) {
        minutes = (end - start) / MILLISECONDS_OF_MINUTE - minutes;
    }

    var dx;

    // 加班
    if (isOvertime) {
        // 加班至少3小时
        // 加班8小时算1天
        ret = Math.floor(minutes / 480);
        dx = minutes % 480;

        // 3-8小时算0.5天
        if (dx >= 180 && dx < 480) {
            ret += 0.5;
        }

    } else {
        // 请假
        ret = Math.floor(minutes / 510);
        dx = minutes % 510;

        // 5小时以内算0.5天
        if (dx) {
            if (dx <= 300) {
                ret += 0.5;
            } else {
                ret += 1;
            }
        }

    }

    return ret;
}


// 计算两个时间内的工作时间: 分钟
// 这两个时间应该在一天内
function getWorkTime(config) {

    config = config || {};

    var normalized;

    if (!config.start) {

        normalized = normalizeDate(config.end);
        config.start = new Date(normalized.Y, normalized.M - 1, normalized.D, 9, 30);
    }

    if (!config.end) {
        normalized = normalizeDate(config.start);
        config.end = new Date(normalized.Y, normalized.M - 1, normalized.D, 18);
    }

    var minutes,

        // 开始结束的分钟数
        startMinutes = getMinutes(config.start),
        endMinutes = getMinutes(config.end);



    // 请假的时间要在工作时间内
    if (startMinutes > endWorkMinutes || endMinutes < startWorkMinutes) {
        minutes = 0;
    } else {
        minutes = (endMinutes > endWorkMinutes ? endWorkMinutes : endMinutes) - (startMinutes < startWorkMinutes ? startWorkMinutes: startMinutes);
    }

    return minutes;
}

/**
 * 判断两个日期是否在同一天
 * @return {Boolean} [description]
 */
function isInSameDay(date1, date2) {
    var format1 = formatDate(date1),
        format2 = formatDate(date2);

    return format1.slice(0, 10) === format2.slice(0, 10);
}

function formatDate(date) {

    var normalized = normalizeDate(date);

    return "Y-m-d h:i:s".replace(/y|m|d|h|i|s/gi, function(k) {
        return normalized[k];
    });
}

function normalizeDate(date) {

   var o =  {
        Y: date.getFullYear(),
        M: date.getMonth() + 1,
        D: date.getDate(),
        H: date.getHours(),
        I: date.getMinutes(),
        S: date.getSeconds()
    };

    var ret = {};

    for (var k in o) {
        // 统一结果为字符串
        ret[k] = o[k] + "";

        ret[k.toLowerCase()] = padding2(o[k]).slice(-2);
    };

    return ret;
}

function padding2(str) {
    str += "";
    return str.length === 1 ? "0" + str : str;
}

/**
 * 是否是休息时间
 */
function isRest(date, isOnlyWorkDay) {
    var day = date.getDay();
    return (day === 0 || day === 6) && isOnlyWorkDay;
}

/**
 * 获取一个日期的一天总分钟数
 */
function getMinutes(date) {
    var hour = date.getHours();

    return hour * 60 + date.getMinutes();
};

})();