Print helpful text to know how to login (#514)

.github/workflows/build.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.19.0
+          go-version: 1.21.4
       - name: Cache Go modules
         uses: actions/cache@v3
         with:

cmd/hamctl/main.go

@@ -1,10 +1,12 @@
 package main
 
 import (
+	"errors"
 	"fmt"
 	"os"
 
 	"github.com/lunarway/release-manager/cmd/hamctl/command"
+	"github.com/lunarway/release-manager/internal/http"
 )
 
 var (
@@ -17,8 +19,17 @@ func main() {
 		fmt.Printf("Error: %v\n", err)
 		os.Exit(1)
 	}
+	c.SilenceUsage = true
+	c.SilenceErrors = true
+
 	err = c.Execute()
 	if err != nil {
+		if errors.Is(err, http.ErrLoginRequired) {
+			fmt.Printf("You are not logged in. To log in, please run the following command:\n 'hamctl login'\n")
+		} else {
+			fmt.Printf("Error: %v\n", err)
+		}
+
 		os.Exit(1)
 	}
 }

internal/http/authenticator.go

@@ -3,6 +3,7 @@ package http
 import (
 	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"net/http"
 	"os"
@@ -13,6 +14,10 @@ import (
 	"golang.org/x/oauth2/clientcredentials"
 )
 
+var (
+	ErrLoginRequired = errors.New("login required")
+)
+
 type UserAuthenticator struct {
 	conf *oauth2.Config
 }
@@ -52,7 +57,7 @@ func (g *UserAuthenticator) Login(ctx context.Context) error {
 func (g *UserAuthenticator) Access(ctx context.Context) (*http.Client, error) {
 	token, err := readAccessToken()
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("%w: %w", ErrLoginRequired, err)
 	}
 	return g.conf.Client(ctx, token), nil
 }

internal/http/client.go

@@ -59,7 +59,7 @@ func (c *Client) Do(method string, path string, requestBody, responseBody interf
 	ctx := context.Background()
 	client, err := c.Auth.Access(ctx)
 	if err != nil {
-		return errors.Wrap(err, "please log in again to refresh the token")
+		return err
 	}
 	client.Timeout = c.Timeout