package controllers

import (
	"basic.com/valib/bhomeclient.git"
	"basic.com/valib/logger.git"
	"encoding/json"
	"errors"
	"fmt"
	"io/ioutil"
	"os"
	"os/exec"
	"reflect"
	"strings"
	"vamicro/extend/util"
	"vamicro/system-service/vo"
)

type WifiController struct {

}


func (wc *WifiController) GetConfig(h *bhomeclient.WrapperHandler, c *bhomeclient.Request) *bhomeclient.Reply  {
	r := &bhomeclient.Reply{ Success:true }
	wifif := util.GetVamicroPath()+"/wifi.config"
	if util.FileExists(wifif) {
		b, err := ioutil.ReadFile(wifif)
		if err == nil {
			var set vo.WifiConf
			if err = json.Unmarshal(b, &set);err == nil {
				r.Data = set
			}
		}
	}

	return r
}

func (wc *WifiController) SaveConf (h *bhomeclient.WrapperHandler, c *bhomeclient.Request) *bhomeclient.Reply  {
	var reqBody vo.WifiConf
	err := c.BindJSON(&reqBody)
	if err != nil {
		return &bhomeclient.Reply{Msg: err.Error()}
	}

	b, err := json.Marshal(reqBody)
	if err != nil {
		return &bhomeclient.Reply{Msg:err.Error()}
	}

	wifif := util.GetVamicroPath()+"/wifi.config"
	err = ioutil.WriteFile(wifif, b, os.ModePerm)
	if err != nil {
		return &bhomeclient.Reply{Msg:err.Error()}
	}

	var cmdArr []string
	cmdArr = append(cmdArr, "/opt/hostapd/bin/wifi_config.sh")
	err = reflectObjCmd(&cmdArr, reqBody)
	if err !=nil {
		return &bhomeclient.Reply{Msg:err.Error()}
	}

	cmd := strings.Join(cmdArr, " ")
	logger.Debug("WifiConf cmd: ", cmd)

	b, e := exec.Command(cmd).Output()
	if e == nil {
		return &bhomeclient.Reply{Success:true, Msg: "配置成功"}
	}

	return  &bhomeclient.Reply{ Msg:string(b) }
}

//严格按照结构体的属性顺序生成sh参数，结构体的参数定义顺序不能变
func reflectObjCmd(cmdArr *[]string, d interface{}) error {
	v := reflect.ValueOf(d)
	for i:=0;i<v.NumField();i++ {
		field := v.Field(i)
		switch field.Type().Kind().String() {
		case "string":
			*cmdArr = append(*cmdArr, fmt.Sprintf("'%s'",field.String()))
		case "int":
			*cmdArr = append(*cmdArr, fmt.Sprintf("%d",field.Int()))
		case "bool":
			bv := 0
			if field.Bool() {
				bv = 1
			}
			*cmdArr = append(*cmdArr, fmt.Sprintf("%d", bv))
		default:
			logger.Error("unknown field type:", field.Type().Kind().String())
			return errors.New("unknown field")
		}
	}
	return nil
}