优化代码

internal/utils/time.go

@@ -0,0 +1,55 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved. Official site: https://goedge.cn .
+
+package utils
+
+import (
+	"errors"
+	"fmt"
+	"github.com/iwind/TeaGo/types"
+	"regexp"
+)
+
+// RangeTimes 计算时间点
+func RangeTimes(timeFrom string, timeTo string, everyMinutes int32) (result []string, err error) {
+	if everyMinutes <= 0 {
+		return nil, errors.New("invalid 'everyMinutes'")
+	}
+
+	var reg = regexp.MustCompile(`^\d{4}$`)
+	if !reg.MatchString(timeFrom) {
+		return nil, errors.New("invalid timeFrom '" + timeFrom + "'")
+	}
+	if !reg.MatchString(timeTo) {
+		return nil, errors.New("invalid timeTo '" + timeTo + "'")
+	}
+
+	if timeFrom > timeTo {
+		// swap
+		timeFrom, timeTo = timeTo, timeFrom
+	}
+
+	var everyMinutesInt = int(everyMinutes)
+
+	var fromHour = types.Int(timeFrom[:2])
+	var fromMinute = types.Int(timeFrom[2:])
+	var toHour = types.Int(timeTo[:2])
+	var toMinute = types.Int(timeTo[2:])
+
+	if fromMinute%everyMinutesInt == 0 {
+		result = append(result, timeFrom)
+	}
+
+	for {
+		fromMinute += everyMinutesInt
+		if fromMinute > 59 {
+			fromHour += fromMinute / 60
+			fromMinute = fromMinute % 60
+		}
+		if fromHour > toHour || (fromHour == toHour && fromMinute > toMinute) {
+			break
+		}
+		result = append(result, fmt.Sprintf("%02d%02d", fromHour, fromMinute))
+	}
+
+	return
+}