package utils

import (
	"bytes"
	"encoding/json"
	"fmt"
	"reflect"
)

var UStruct *StructUtil

func init() {
	UStruct = NewStructUtil()
}

type StructUtil struct {
}

func NewStructUtil() *StructUtil {
	return &StructUtil{}
}

func (s *StructUtil) Struct2Map(content interface{}) map[string]interface{} {
	var name map[string]interface{}
	if marshalContent, err := json.Marshal(content); err != nil {
		fmt.Println(err)
	} else {
		d := json.NewDecoder(bytes.NewReader(marshalContent))
		d.UseNumber() // 设置将float64转为一个number
		if err := d.Decode(&name); err != nil {
			fmt.Println(err)
		} else {
			for k, v := range name {
				name[k] = v
			}
		}
	}
	return name
}
func (s *StructUtil) String2Map(content string) (map[string]interface{}, error) {
	var name map[string]interface{}

	d := json.NewDecoder(bytes.NewReader([]byte(content)))
	d.UseNumber() // 设置将float64转为一个number
	if err := d.Decode(&name); err != nil {
		return name, err
	} else {
		return name, nil
	}
}
func (s *StructUtil) Struct2MapTag(dest *interface{}, tag string) (map[string]interface{}, error) {
	t := reflect.TypeOf(dest)
	v := reflect.ValueOf(dest)
	var m = make(map[string]interface{})
	for i := 0; i < t.NumField(); i++ {
		fieldType := t.Field(i)
		tag := fieldType.Tag.Get(tag)
		if tag != "" {
			m[tag] = v.Field(i).Interface()
		}
	}
	return m, nil
}