Add update cmd

Gopkg.toml

@@ -47,3 +47,7 @@
 [[constraint]]
   name = "github.com/dghubble/sling"
   version = "1.1.0"
+
+  [[constraint]]
+  name = "github.com/italolelis/goupdater"
+  version = "0.1.0"

README.md

@@ -35,6 +35,7 @@ github-cli [command] [--flags]
 | `github-cli repo delete [--flags]`   | Deletes a github repository          |
 | `github-cli hiring send [--flags]`   | Creates a new hellofresh hiring test |
 | `github-cli hiring unseat [--flags]` | Removes external collaborators from repositories |
+| `github-cli update `                 | Check for new versions of github-cli |
 | `github-cli version`                 | Prints the version information |
 
 ## Contributing

cmd/root.go

@@ -42,7 +42,7 @@ func NewRootCmd() *cobra.Command {
 	ctx := log.NewContext(context.Background())
 	ctx, err := config.NewContext(ctx, opts.configFile)
 	if err != nil {
-		log.WithContext(ctx).WithError(err).Error("Could not load configuration file")
+		log.WithContext(ctx).WithError(err).Fatal("Could not load configuration file")
 	}
 
 	cfg := config.WithContext(ctx)
@@ -66,6 +66,7 @@ func NewRootCmd() *cobra.Command {
 	cmd.AddCommand(NewRepoCmd(ctx))
 	cmd.AddCommand(NewHiringCmd(ctx))
 	cmd.AddCommand(NewVersionCmd(ctx))
+	cmd.AddCommand(NewUpdateCmd(ctx))
 
 	return &cmd
 }

cmd/update.go

@@ -0,0 +1,62 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/hashicorp/errwrap"
+	"github.com/hellofresh/github-cli/pkg/log"
+	"github.com/italolelis/goupdater"
+	"github.com/spf13/cobra"
+)
+
+const (
+	githubOwner = "hellofresh"
+	githubRepo  = "github-cli"
+)
+
+// UpdateOptions are the command flags
+type UpdateOptions struct{}
+
+// NewUpdateCmd creates a new update command
+func NewUpdateCmd(ctx context.Context) *cobra.Command {
+	opts := &UpdateOptions{}
+
+	cmd := &cobra.Command{
+		Use:     "update",
+		Aliases: []string{"self-update"},
+		Short:   fmt.Sprintf("Check for new versions of %s", githubRepo),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return RunUpdate(ctx, opts)
+		},
+	}
+
+	return cmd
+}
+
+// RunUpdate runs the update command
+func RunUpdate(ctx context.Context, opts *UpdateOptions) error {
+	logger := log.WithContext(ctx)
+	logger.Info("Checking if any new version is available...")
+
+	resolver, err := goupdater.NewGithubWithContext(ctx, goupdater.GithubOpts{
+		Owner: githubOwner,
+		Repo:  githubRepo,
+	})
+	if err != nil {
+		return errwrap.Wrapf("could not create the updater client: {{err}}", err)
+	}
+
+	updated, err := goupdater.UpdateWithContext(ctx, resolver, version)
+	if err != nil {
+		return errwrap.Wrapf("could not update the binary: {{err}}", err)
+	}
+
+	if updated {
+		logger.Infof("You are now using the latest version of %s", githubRepo)
+	} else {
+		logger.Infof("You already have the latest version of %s", githubRepo)
+	}
+
+	return nil
+}