Disable authentication with Twitch token

aside of the `/login` endpoint for the editor

Signed-off-by: Knut Ahlers <knut@ahlers.me>

authBackends.go

@@ -1,14 +1,10 @@
 package main
 
 import (
-	"context"
-	"net/http"
 	"time"
 
 	"github.com/Luzifer/go_helpers/v2/str"
 	"github.com/Luzifer/twitch-bot/v3/internal/service/authcache"
-	"github.com/Luzifer/twitch-bot/v3/pkg/twitch"
-	"github.com/pkg/errors"
 )
 
 const internalTokenAuthCacheExpiry = 5 * time.Minute
@@ -41,40 +37,3 @@ func authBackendInternalEditorToken(token string) ([]string, time.Time, error) {
 	// Editors have full access: Return module "*"
 	return []string{"*"}, expiresAt, nil
 }
-
-func authBackendTwitchToken(token string) (modules []string, expiresAt time.Time, err error) {
-	tc := twitch.New(cfg.TwitchClient, cfg.TwitchClientSecret, token, "")
-
-	var httpError twitch.HTTPError
-
-	id, user, err := tc.GetAuthorizedUser(context.Background())
-	switch {
-	case err == nil:
-		// We got a valid user, continue check below
-		if !str.StringInSlice(user, config.BotEditors) && !str.StringInSlice(id, config.BotEditors) {
-			// That user is none of our editors: Deny access
-			return nil, time.Time{}, authcache.ErrUnauthorized
-		}
-
-		_, _, expiresAt, err = tc.GetTokenInfo(context.Background())
-		if err != nil {
-			return nil, time.Time{}, errors.Wrap(err, "getting token expiry")
-		}
-
-		// Editors have full access: Return module "*"
-		return []string{"*"}, expiresAt, nil
-
-	case errors.As(err, &httpError):
-		// We either got "forbidden" or we got another error
-		if httpError.Code == http.StatusUnauthorized {
-			// That token wasn't valid or not a Twitch token: Unauthorized
-			return nil, time.Time{}, authcache.ErrUnauthorized
-		}
-
-		return nil, time.Time{}, errors.Wrap(err, "validating Twitch token")
-
-	default:
-		// Something else went wrong
-		return nil, time.Time{}, errors.Wrap(err, "validating Twitch token")
-	}
-}

main.go

@@ -140,7 +140,6 @@ func main() {
 	authService = authcache.New(
 		authBackendInternalAppToken,
 		authBackendInternalEditorToken,
-		authBackendTwitchToken,
 	)
 
 	cronService = cron.New(cron.WithSeconds())