feat：完善项目

utils/time.go

@@ -0,0 +1,63 @@
+package utils
+
+import (
+	"math"
+	"time"
+)
+
+type Week int
+
+const (
+	Monday Week = iota + 1
+	Tuesday
+	Wednesday
+	Thursday
+	Friday
+	Saturday
+	Sunday
+)
+
+func IsEmptyTime(t time.Time) bool {
+	return t.IsZero()
+}
+
+func FormatDate(t time.Time) string {
+	return t.Format("2006-01-02")
+}
+
+func FormatDatetime(t time.Time) string {
+	return t.Format("2006-01-02 15:04:05")
+}
+
+func FormatTimeForLayout(t time.Time, layout string) string {
+	return t.Format(layout)
+}
+
+func DateTimeToTime(t string) time.Time {
+	_time, _ := time.ParseInLocation("2006-01-02 15:04:05", t, time.Local)
+	return _time
+}
+
+func GetMondayTime(t time.Time) time.Time {
+	offset := int(time.Monday - t.Weekday())
+
+	if offset > 0 {
+		offset = -6
+	}
+	return time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, time.Local).AddDate(0, 0, offset)
+}
+
+func MonthBeginAt(year, month int) time.Time {
+	return time.Date(year, time.Month(month), 1, 0, 0, 0, 0, time.Now().Location())
+}
+
+func MonthFinishAt(year, month int) time.Time {
+	mark := time.Date(year, time.Month(month), 1, 23, 59, 59, 0, time.Now().Location())
+	return mark.AddDate(0, 1, -1)
+}
+
+func DiffTimeMonth(time1, time2 time.Time) int {
+	year := math.Abs(float64(time1.Year()) - float64(time2.Year()))
+	month := math.Abs(float64(time1.Month()) - float64(time2.Month()))
+	return int(year)*12 + int(month) + 1
+}