package util

import (
	"crypto/sha256"
	"fmt"
	"github.com/shopspring/decimal"
	"io"
	"math/big"
	"net/http"
	qu "qfw/util"
	"reflect"
	"regexp"
	"strconv"
)

var reg = regexp.MustCompile("[^0-9A-Za-z\u4e00-\u9fa5]+")
var Filter = regexp.MustCompile("<[^>]*?>|[\\s\u3000\u2003\u00a0]")

func Sha(con string) string {
	h := sha256.New()
	con = reg.ReplaceAllString(Filter.ReplaceAllString(con, ""), "")
	h.Write([]byte(con))
	return fmt.Sprintf("%x", h.Sum(nil))
}

func HexToBigIntMod(href string) int {
	//取哈希值
	t := sha256.New()
	_, _ = io.WriteString(t, href)
	hex := fmt.Sprintf("%x", t.Sum(nil))
	//取模
	n := new(big.Int)
	n, _ = n.SetString(hex[2:], 16)
	return int(n.Mod(n, big.NewInt(16)).Int64())
}

func HexText(href string) string {
	h := sha256.New()
	h.Write([]byte(href))
	return fmt.Sprintf("%x", h.Sum(nil))
}

//数据类型转换
func GetPostForm(r *http.Request) map[string]interface{} {
	val := map[string]interface{}{}
	for k, _ := range r.Form {
		// if len(k) < 2 {
		// 	continue
		// }
		if k != "_id" {
			v := r.FormValue(k)
			switch k[:2] {
			case "s_": //string型
				val[k] = v
			case "l_": //int64位
				val[k], _ = strconv.ParseInt(v, 10, 64)
			case "i_": //int型
				val[k], _ = strconv.Atoi(v)
			default:
				if v == "true" || v == "false" {
					b, _ := strconv.ParseBool(v)
					val[k] = b
				} else {
					val[k] = v
				}
			}
		}
	}
	return val
}

//从数组中删除元素
func deleteSlice(arr []string, v string) []string {
	for k, v1 := range arr {
		if v1 == v {
			return append(arr[:k], arr[k+1:]...)
		}
	}
	return arr
}

/**
 *	前端科学计数法处理
 */
func FormatNumber(tmp map[string]interface{}) {
	for k, v := range tmp {
		if reflect.TypeOf(v).Name() == reflect.Float64.String() {
			num, _ := decimal.NewFromString(strconv.FormatFloat(qu.Float64All(v), 'e', -1, 64))
			tmp[k], _ = num.Float64()
		}
	}
}

// 公告信息修改字段，需要修改项目信息的字段
var ElementsPro = []string{
	"projectname",
	"projectcode",
	"buyer",
	"agency",
	"area",
	"city",
	"publishtime",
	"toptype",
	"subtype",
	"district",
	"title",
	"buyerperson",
	"buyertel",
	"buyerclass",
	"createtime",
	"review_experts",
	"purchasing",
	"href",
	"topscopeclass",
	"budget",
	"bidamount",
	"winner",
	"s_winner",
}

func IsModifyPro(tmp map[string]interface{}) bool {
	for _, v := range ElementsPro {
		if tmp[v] != nil {
			return true
		}
	}
	return false
}

func GetJyHref(id string) string {
	return `https://www.jianyu360.cn/article/content/` + qu.CommonEncodeArticle("content", id) + `.html`
}

func PutHrefRedis(href, shaid, id string) {
	db := HexToBigIntMod(href)
	hashHref := HexText(href)
	PutRedis("title_repeat_fulljudgement", db, hashHref, id, -1)
	PutRedis("shaid", 0, shaid, "", 5184000)
}