package main

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"os"
	"time"
)

const (
	Date_Full_Layout    = "2006-01-02 15:04:05"
	Date_Short_Layout   = "2006-01-02"
	Date_Small_Layout   = "01-02"
	Date_Time_Layout    = "15:04"
	Date_yyyyMMdd       = "20060102"
	Date_yyyyMMdd_Point = "2006.01.02"
)

func ReadConfig(config ...interface{}) {
	var r *os.File
	if len(config) > 1 {
		filepath, _ := config[0].(string)
		r, _ = os.Open(filepath)
		defer r.Close()
		bs, _ := ioutil.ReadAll(r)
		json.Unmarshal(bs, config[1])
	} else {
		r, _ = os.Open("./config.json")
		defer r.Close()
		bs, _ := ioutil.ReadAll(r)
		json.Unmarshal(bs, config[0])
	}
}

func GetTime(day int) int64 {
	nowTime := time.Now().AddDate(0, 0, day)
	timeStr := FormatDate(&nowTime, Date_Short_Layout)
	t, _ := time.ParseInLocation(Date_Short_Layout, timeStr, time.Local)
	return t.Unix()
}
func FormatDateByInt64(src *int64, layout string) string {
	var tmp int64
	if *src > 0 {
		if len(fmt.Sprint(*src)) >= 12 {
			tmp = (*src) / 1000
		} else {
			tmp = (*src)
		}
	} else {
		if len(fmt.Sprint(*src)) >= 13 {
			tmp = (*src) / 1000
		} else {
			tmp = (*src)
		}
	}
	date := time.Unix(tmp, 0)
	return FormatDate(&date, layout)
}

// 日期格式化
func FormatDate(src *time.Time, layout string) string {
	return (*src).Local().Format(layout)
}