package weixin

import (
	"encoding/json"
	"fmt"
	"gitee.com/h79/gothird/token"
	access2 "gitee.com/h79/gothird/token/access"
	"gitee.com/h79/gothird/weixin/access"
	"gitee.com/h79/gothird/weixin/consts"
	"gitee.com/h79/gothird/weixin/response"
	"gitee.com/h79/goutils/common/data"
	"gitee.com/h79/goutils/common/http"
	"gitee.com/h79/goutils/common/result"
)

// 1 公众号: 全局唯一接口调用凭据
// 2 小程序: 全局唯一后台接口调用凭据（access_token）。调用绝大多数后台接口时都需使用 access_token
// 这种没有刷新refreshToken, 只有到期时，再调用一次，取一个新的access token
func getTokenUrl(token token.Token) string {
	return fmt.Sprintf("%s/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s", consts.ApiPrefixUrl, token.GetAppId(), token.GetSecret())
}

func GetAccessToken(tk token.Token, d data.D) (access2.Token, error) {
	hp := http.Http{}
	body, err := hp.DoBytes("GET", getTokenUrl(tk), nil)
	if err != nil {
		return nil, err
	}

	type tokenResult struct {
		response.Response
		access.Token
	}

	res := tokenResult{}

	if err = json.Unmarshal(body, &res); err != nil {
		return nil, err
	}
	if res.ErrCode != 0 {
		return nil, result.Error(res.ErrCode, res.ErrMsg)
	}
	return &res.Token, nil
}