modweb/modules/auth/discord/get_token.go

package discord

import (
	"encoding/json"
	"io/ioutil"
	"net/http"
	"net/url"
)

type TokenResponse struct {
	AccessToken  string `json:"access_token"`
	TokenType    string `json:"token_type"`
	ExpiresIn    int    `json:"expires_in"`
	RefreshToken string `json:"refresh_token"`
	Scope        string `json:"scope"`
}

func (m *Module) getToken(code string) (*TokenResponse, error) {
	res, err := http.PostForm(API_ENDPOINT+"/oauth2/token", url.Values{
		"client_id":     {m.ClientID},
		"client_secret": {m.ClientSecret},
		"grant_type":    {"authorization_code"},
		"code":          {code},
		"redirect_uri":  {m.RedirectURI},
		"scope":         {m.Scope},
	})
	if err != nil {
		return nil, err
	}

	body, err := ioutil.ReadAll(res.Body)
	if err != nil {
		return nil, err
	}

	var resp TokenResponse
	err = json.Unmarshal(body, &resp)
	return &resp, nil
}