package utils

import (
	"fmt"
	"reflect"
	"strings"
)

func Implode(glue string, args ...interface{}) string {
	data := make([]string, len(args))
	for i, s := range args {
		data[i] = fmt.Sprint(s)
	}
	return strings.Join(data, glue)
}
func ImplodeByKey(glue string, args ...interface{}) string {
	data := make([]string, len(args))
	for i, _ := range args {
		data[i] = fmt.Sprint(i)
	}
	return strings.Join(data, glue)
}

//字符串是否在数组里
func InArr(target string, str_array []string) bool {
	for _, element := range str_array {
		if target == element {
			return true
		}
	}
	return false
}

//把数组的值放到key里
func ArrayColumn(array interface{}, key string) (result map[string]interface{}, err error) {
	result = make(map[string]interface{})
	t := reflect.TypeOf(array)
	v := reflect.ValueOf(array)
	if t.Kind() != reflect.Slice {
		return nil, nil
	}
	if v.Len() == 0 {
		return nil, nil
	}
	for i := 0; i < v.Len(); i++ {
		indexv := v.Index(i)
		if indexv.Type().Kind() != reflect.Struct {
			return nil, nil
		}
		mapKeyInterface := indexv.FieldByName(key)
		if mapKeyInterface.Kind() == reflect.Invalid {
			return nil, nil
		}
		mapKeyString, err := InterfaceToString(mapKeyInterface.Interface())
		if err != nil {
			return nil, err
		}
		result[mapKeyString] = indexv.Interface()
	}
	return result, err
}

//转string
func InterfaceToString(v interface{}) (result string, err error) {
	switch reflect.TypeOf(v).Kind() {
	case reflect.Int64, reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32:
		result = fmt.Sprintf("%v", v)
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		result = fmt.Sprintf("%v", v)
	case reflect.String:
		result = v.(string)
	default:
		err = nil
	}
	return result, err
}

func HideTrueName(name string) string {
	res := "**"
	if name != "" {
		runs := []rune(name)
		leng := len(runs)
		if leng <= 3 {
			res = string(runs[0:1]) + res
		} else if leng < 5 {
			res = string(runs[0:2]) + res
		} else if leng < 10 {
			res = string(runs[0:2]) + "***" + string(runs[leng-2:leng])
		} else if leng < 16 {
			res = string(runs[0:3]) + "****" + string(runs[leng-3:leng])
		} else {
			res = string(runs[0:4]) + "*****" + string(runs[leng-4:leng])
		}
	}
	return res
}