/*
 * @Name:
 * @Descripttion:
 * @Warning:
 * @version:
 * @Author: moo
 * @Date: 2021-01-03 18:05:41
 * @LastEditors: moo
 * @LastEditTime: 2021-01-30 15:39:44
 */
package utils

import (
	// "github.com/olongfen/gen-id"
	"bytes"
	"fmt"
	"math/rand"
	"time"

	"github.com/srlemon/gen-id/generator"
)

/***
https://github.com/olongfen/gen-id
go get github.com/olongfen/gen-id@master
***/

const char = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"

func RandomName() string {
	g := new(generator.GeneratorData)
	return g.GeneratorName()
}

func RandomMobile() string {
	g := new(generator.GeneratorData)
	return g.GeneratorPhone()
}

func RandomInt(min int, max int) int {
	if min >= max || max == 0 {
		return max
	}
	time.Sleep(1)
	rand.Seed(time.Now().UnixNano())
	return min + rand.Intn(max-min)
}

func RandomTitle() string {
	i := RandomInt(1, 99999)
	s := fmt.Sprintf("标题[%05d]", i)
	return s
}

func RandomSite() string {
	i := RandomInt(1, 9999)
	s := fmt.Sprintf("站点[%04d]", i)
	return s
}

func RandomContent(size int) string {
	a := make([]rune, size)
	for i := range a {
		a[i] = rune(RandomInt(19968, 40869))
	}
	return string(a)
}

func RandomString(size int) string {
	rand.NewSource(time.Now().UnixNano()) // 产生随机种子
	var s bytes.Buffer
	for i := 0; i < size; i++ {
		s.WriteByte(char[rand.Int63()%int64(len(char))])
	}
	return s.String()
}

func RandomTime() time.Time {
	// min := time.Date(1970, 1, 0, 0, 0, 0, 0, time.UTC).Unix()
	min := time.Date(2021, 1, 3, 0, 0, 0, 0, time.Local).Unix()
	max := time.Date(2021, 1, 8, 0, 0, 0, 0, time.Local).Unix()
	delta := max - min

	sec := rand.Int63n(delta) + min
	return time.Unix(sec, 0)
}

func RandFloat(min, max float64) float64 {
	res := min + rand.Float64()*(max-min)

	return res
}