1 files changed, 36 insertions, 1 deletions
diff --git a/go/internal/command/discover/discover.go b/go/internal/command/discover/discover.go
index 63a7a32..ab04cbd 100644
--- a/go/internal/command/discover/discover.go
+++ b/go/internal/command/discover/discover.go
@@ -2,9 +2,12 @@ package discover
 
 import (
 	"fmt"
+	"io"
+	"os"
 
 	"gitlab.com/gitlab-org/gitlab-shell/go/internal/command/commandargs"
 	"gitlab.com/gitlab-org/gitlab-shell/go/internal/config"
+	"gitlab.com/gitlab-org/gitlab-shell/go/internal/gitlabnet/discover"
 )
 
 type Command struct {
@@ -12,6 +15,38 @@ type Command struct {
 	Args   *commandargs.CommandArgs
 }
 
+var (
+	output io.Writer = os.Stdout
+)
+
 func (c *Command) Execute() error {
-	return fmt.Errorf("No feature is implemented yet")
+	response, err := c.getUserInfo()
+	if err != nil {
+		return fmt.Errorf("Failed to get username: %v", err)
+	}
+
+	if response.IsAnonymous() {
+		fmt.Fprintf(output, "Welcome to GitLab, Anonymous!\n")
+	} else {
+		fmt.Fprintf(output, "Welcome to GitLab, @%s!\n", response.Username)
+	}
+
+	return nil
+}
+
+func (c *Command) getUserInfo() (*discover.Response, error) {
+	client, err := discover.NewClient(c.Config)
+	if err != nil {
+		return nil, err
+	}
+
+	if c.Args.GitlabKeyId != "" {
+		return client.GetByKeyId(c.Args.GitlabKeyId)
+	} else if c.Args.GitlabUsername != "" {
+		return client.GetByUsername(c.Args.GitlabUsername)
+	} else {
+		// There was no 'who' information, this  matches the ruby error
+		// message.
+		return nil, fmt.Errorf("who='' is invalid")
+	}
 }