package weixinrpc

import (
	"encoding/json"
	"strconv"
	"time"

	"git.tetele.net/tgo/crypter"

	"github.com/golang/protobuf/proto"
)

func GetAccessToken(dbname, site_id string, appid, secret string, url ...string) (*AccessTokenRes, error) {

	conn, err := rpc_server_conn(url...)
	if err != nil {
		return nil, err
	}
	defer conn.Close()

	data := AccessTokenReq{}
	data.SiteId = site_id
	data.Dbname = dbname
	data.Appid = appid
	data.Secret = secret

	data_json, err := json.Marshal(data)
	if err != nil {
		return nil, err
	}

	encryData := crypter.DesEn(string(data_json), DES_KEY)

	now_int64 := time.Now().Unix()

	now := strconv.FormatInt(now_int64, 10)

	sign := Sign(encryData, now)

	req := &Request{
		proto.String(encryData),
		proto.String(now),
		proto.String(sign),
		nil}

	res := &Response{}

	err = conn.GetAccessToken(req, res)

	if err != nil {
		return nil, err
	}

	return HandleAccessToken(res)

}

/**
 * 处理返回结果
 */
func HandleAccessToken(res *Response) (*AccessTokenRes, error) {

	//解密
	res_data_de, err := GetOrgData(res)

	if err != nil {
		return nil, err
	}

	var res_arr AccessTokenRes

	err = json.Unmarshal([]byte(res_data_de), &res_arr)

	if err != nil {
		return nil, err
	}

	return &res_arr, nil
}