package utils

import (
	"time"
)

const (
	timeDateLayout   = "2006-01-02"
	timeSecondLayout = "2006-01-02 15:04:05"
	timeMinuteLayout = "2006-01-02 15:04"
	timeLayout       = "15:04"
)

func FormatDateTime(t *time.Time) string {
	if t == nil {
		return ""
	}
	return t.Format(timeDateLayout)
}

func ParseDateTime(dateTime string) (*time.Time, error) {
	t, err := time.ParseInLocation(timeDateLayout, dateTime, time.Local)
	if err != nil {
		return nil, err
	}
	return &t, nil
}

func FormatMinuteTime(t *time.Time) string {
	if t == nil {
		return ""
	}
	return t.Format(timeMinuteLayout)
}

func ParseMinuteTime(minuteTime string) (*time.Time, error) {
	t, err := time.ParseInLocation(timeMinuteLayout, minuteTime, time.Local)
	if err != nil {
		return nil, err
	}
	return &t, nil
}

func FormatSecondTime(t *time.Time) string {
	if t == nil {
		return ""
	}
	return t.Format(timeSecondLayout)
}

func ParseSecondTime(secondTime string) (*time.Time, error) {
	t, err := time.ParseInLocation(timeSecondLayout, secondTime, time.Local)
	if err != nil {
		return nil, err
	}
	return &t, nil
}

func FormatTime(t *time.Time) string {
	if t == nil {
		return ""
	}
	return t.Format(timeLayout)
}

func ParseTime(dateTime string) (*time.Time, error) {
	dateTime = "9999-01-01 " + dateTime
	t, err := time.ParseInLocation(timeMinuteLayout, dateTime, time.Local)
	if err != nil {
		return nil, err
	}
	return &t, nil
}

var WeekDayMap = map[string]string{
	"Monday":    "星期一",
	"Tuesday":   "星期二",
	"Wednesday": "星期三",
	"Thursday":  "星期四",
	"Friday":    "星期五",
	"Saturday":  "星期六",
	"Sunday":    "星期日",
}

func ParseChWeekDay(t *time.Time) string {
	return WeekDayMap[t.Weekday().String()]
}