Z様 OAuth1 integration

auth.go

package handler

import (
	"fmt"
	"net/http"

	"github.com/labstack/echo"
	"github.com/woodstock-tokyo/woodstock-zaim/server/util"
)

var (
	config      = util.LoadConfig()
	consts      = util.LoadConst()
	oauthClient = &oauth.Client{
		TemporaryCredentialRequestURI: config.RequestTokenURL, // https://api.zaim.net/v2/auth/request
		ResourceOwnerAuthorizationURI: config.AuthorizeURL,    // https://auth.zaim.net/users/auth
		TokenRequestURI:               config.AccessTokenURL,  // https://api.zaim.net/v2/auth/access
		Credentials: oauth.Credentials{
			Token:  config.ConsumerKey,
			Secret: config.ConsumerSecret,
		},
	}
)

const (
	tempCredKey  = "tempCred"
	tokenCredKey = "tokenCred"
)

// Authorize GET /auth
func Authorize(c echo.Context) error {
	tempCred, err := oauthClient.RequestTemporaryCredentials(nil, config.CallbackURL, nil)
	if err != nil {
		fmt.Println(err)
		return util.ResponseError(c, consts.GetError("500-001"), err)
	}

	s := util.GetSession(c.Request())
	s[tempCredKey] = tempCred
	if err := util.SaveSession(c.Response(), c.Request(), s); err != nil {
		return util.ResponseError(c, consts.GetError("500-002"), err)
	}

	return c.Redirect(http.StatusFound, oauthClient.AuthorizationURL(tempCred, nil))
}

// Callback GET /auth/callback
// todo
func Callback(c echo.Context) error {
	fmt.Println(c.Request())
	return c.NoContent(http.StatusOK)
}