feat: add update command with self-update, verification, and rollback

cmd/doctor/doctor.go

@@ -238,7 +238,7 @@ func checkCLIUpdate() []checkResult {
 	if update.IsNewer(latest, current) {
 		return []checkResult{warn("cli_update",
 			fmt.Sprintf("%s → %s available", current, latest),
-			"run: npm update -g @larksuite/cli")}
+			"run: lark-cli update (or: npm install -g @larksuite/cli)")}
 	}
 	return []checkResult{pass("cli_update", latest+" (up to date)")}
 }

cmd/root.go

@@ -22,6 +22,7 @@ import (
 	"github.com/larksuite/cli/cmd/profile"
 	"github.com/larksuite/cli/cmd/schema"
 	"github.com/larksuite/cli/cmd/service"
+	cmdupdate "github.com/larksuite/cli/cmd/update"
 	internalauth "github.com/larksuite/cli/internal/auth"
 	"github.com/larksuite/cli/internal/build"
 	"github.com/larksuite/cli/internal/cmdutil"
@@ -118,6 +119,7 @@ func Execute() int {
 	rootCmd.AddCommand(api.NewCmdApi(f, nil))
 	rootCmd.AddCommand(schema.NewCmdSchema(f, nil))
 	rootCmd.AddCommand(completion.NewCmdCompletion(f))
+	rootCmd.AddCommand(cmdupdate.NewCmdUpdate(f))
 	service.RegisterServiceCommands(rootCmd, f)
 	shortcuts.RegisterShortcuts(rootCmd, f)
 

cmd/update/update.go

@@ -0,0 +1,314 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmdupdate
+
+import (
+	"fmt"
+	"runtime"
+	"strings"
+
+	"github.com/spf13/cobra"
+
+	"github.com/larksuite/cli/internal/build"
+	"github.com/larksuite/cli/internal/cmdutil"
+	"github.com/larksuite/cli/internal/output"
+	"github.com/larksuite/cli/internal/selfupdate"
+	"github.com/larksuite/cli/internal/update"
+)
+
+const (
+	repoURL      = "https://github.com/larksuite/cli"
+	maxNpmOutput = 2000
+	osWindows    = "windows"
+)
+
+// Overridable for testing.
+var (
+	fetchLatest    = func() (string, error) { return update.FetchLatest() }
+	currentVersion = func() string { return build.Version }
+	currentOS      = runtime.GOOS
+	newUpdater     = func() *selfupdate.Updater { return selfupdate.New() }
+)
+
+func isWindows() bool { return currentOS == osWindows }
+
+func releaseURL(version string) string {
+	return repoURL + "/releases/tag/v" + strings.TrimPrefix(version, "v")
+}
+
+func changelogURL() string { return repoURL + "/blob/main/CHANGELOG.md" }
+
+// --- Terminal symbols (ASCII fallback on Windows) ---
+
+func symOK() string {
+	if isWindows() {
+		return "[OK]"
+	}
+	return "✓"
+}
+
+func symFail() string {
+	if isWindows() {
+		return "[FAIL]"
+	}
+	return "✗"
+}
+
+func symWarn() string {
+	if isWindows() {
+		return "[WARN]"
+	}
+	return "⚠"
+}
+
+func symArrow() string {
+	if isWindows() {
+		return "->"
+	}
+	return "→"
+}
+
+// --- Command ---
+
+// UpdateOptions holds inputs for the update command.
+type UpdateOptions struct {
+	Factory *cmdutil.Factory
+	JSON    bool
+	Force   bool
+	Check   bool
+}
+
+// NewCmdUpdate creates the update command.
+func NewCmdUpdate(f *cmdutil.Factory) *cobra.Command {
+	opts := &UpdateOptions{Factory: f}
+
+	cmd := &cobra.Command{
+		Use:   "update",
+		Short: "Update lark-cli to the latest version",
+		Long: `Update lark-cli to the latest version.
+
+Detects the installation method automatically:
+  - npm install: runs npm install -g @larksuite/cli@<version>
+  - manual/other: shows GitHub Releases download URL
+
+Use --json for structured output (for AI agents and scripts).
+Use --check to only check for updates without installing.`,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return updateRun(opts)
+		},
+	}
+	cmdutil.DisableAuthCheck(cmd)
+	cmd.Flags().BoolVar(&opts.JSON, "json", false, "structured JSON output")
+	cmd.Flags().BoolVar(&opts.Force, "force", false, "force reinstall even if already up to date")
+	cmd.Flags().BoolVar(&opts.Check, "check", false, "only check for updates, do not install")
+
+	return cmd
+}
+
+func updateRun(opts *UpdateOptions) error {
+	io := opts.Factory.IOStreams
+	cur := currentVersion()
+	updater := newUpdater()
+
+	updater.CleanupStaleFiles()
+	output.PendingNotice = nil
+
+	// 1. Fetch latest version
+	latest, err := fetchLatest()
+	if err != nil {
+		return reportError(opts, io, output.ExitNetwork, "network", "failed to check latest version: %s", err)
+	}
+
+	// 2. Validate version format
+	if update.ParseVersion(latest) == nil {
+		return reportError(opts, io, output.ExitInternal, "update_error", "invalid version from registry: %s", latest)
+	}
+
+	// 3. Compare versions
+	if !opts.Force && !update.IsNewer(latest, cur) {
+		if opts.JSON {
+			output.PrintJson(io.Out, map[string]interface{}{
+				"ok": true, "previous_version": cur, "current_version": cur,
+				"latest_version": latest, "action": "already_up_to_date",
+				"message": fmt.Sprintf("lark-cli %s is already up to date", cur),
+			})
+			return nil
+		}
+		fmt.Fprintf(io.ErrOut, "%s lark-cli %s is already up to date\n", symOK(), cur)
+		return nil
+	}
+
+	// 4. Detect installation method
+	detect := updater.DetectInstallMethod()
+
+	// 5. --check
+	if opts.Check {
+		return reportCheckResult(opts, io, cur, latest, detect.CanAutoUpdate())
+	}
+
+	// 6. Execute update
+	if !detect.CanAutoUpdate() {
+		return doManualUpdate(opts, io, cur, latest, detect)
+	}
+	return doNpmUpdate(opts, io, cur, latest, updater)
+}
+
+// --- Output helpers ---
+
+func reportError(opts *UpdateOptions, io *cmdutil.IOStreams, exitCode int, errType, format string, args ...interface{}) error {
+	msg := fmt.Sprintf(format, args...)
+	if opts.JSON {
+		output.PrintJson(io.Out, map[string]interface{}{
+			"ok": false, "error": map[string]interface{}{"type": errType, "message": msg},
+		})
+		return output.ErrBare(exitCode)
+	}
+	return output.Errorf(exitCode, errType, "%s", msg)
+}
+
+func reportCheckResult(opts *UpdateOptions, io *cmdutil.IOStreams, cur, latest string, canAutoUpdate bool) error {
+	if opts.JSON {
+		output.PrintJson(io.Out, map[string]interface{}{
+			"ok": true, "previous_version": cur, "current_version": cur,
+			"latest_version": latest, "action": "update_available",
+			"auto_update": canAutoUpdate,
+			"message":     fmt.Sprintf("lark-cli %s %s %s available", cur, symArrow(), latest),
+			"url":         releaseURL(latest), "changelog": changelogURL(),
+		})
+		return nil
+	}
+	fmt.Fprintf(io.ErrOut, "Update available: %s %s %s\n", cur, symArrow(), latest)
+	fmt.Fprintf(io.ErrOut, "  Release:   %s\n", releaseURL(latest))
+	fmt.Fprintf(io.ErrOut, "  Changelog: %s\n", changelogURL())
+	if canAutoUpdate {
+		fmt.Fprintf(io.ErrOut, "\nRun `lark-cli update` to install.\n")
+	} else {
+		fmt.Fprintf(io.ErrOut, "\nDownload the release above to update manually.\n")
+	}
+	return nil
+}
+
+func doManualUpdate(opts *UpdateOptions, io *cmdutil.IOStreams, cur, latest string, detect selfupdate.DetectResult) error {
+	reason := detect.ManualReason()
+	if opts.JSON {
+		output.PrintJson(io.Out, map[string]interface{}{
+			"ok": true, "previous_version": cur, "latest_version": latest,
+			"action":  "manual_required",
+			"message": fmt.Sprintf("Automatic update unavailable: %s (path: %s)", reason, detect.ResolvedPath),
+			"url":     releaseURL(latest), "changelog": changelogURL(),
+		})
+		return nil
+	}
+	fmt.Fprintf(io.ErrOut, "Automatic update unavailable: %s (path: %s).\n\n", reason, detect.ResolvedPath)
+	fmt.Fprintf(io.ErrOut, "To update manually, download the latest release:\n")
+	fmt.Fprintf(io.ErrOut, "  Release:   %s\n", releaseURL(latest))
+	fmt.Fprintf(io.ErrOut, "  Changelog: %s\n", changelogURL())
+	fmt.Fprintf(io.ErrOut, "\nOr install via npm:\n  npm install -g %s@%s\n", selfupdate.NpmPackage, latest)
+	fmt.Fprintf(io.ErrOut, "\nAfter updating, also update skills:\n  npx -y skills add larksuite/cli -g -y\n")
+	return nil
+}
+
+func doNpmUpdate(opts *UpdateOptions, io *cmdutil.IOStreams, cur, latest string, updater *selfupdate.Updater) error {
+	restore, err := updater.PrepareSelfReplace()
+	if err != nil {
+		return reportError(opts, io, output.ExitAPI, "update_error", "failed to prepare update: %s", err)
+	}
+
+	if !opts.JSON {
+		fmt.Fprintf(io.ErrOut, "Updating lark-cli %s %s %s via npm ...\n", cur, symArrow(), latest)
+	}
+
+	npmResult := updater.RunNpmInstall(latest)
+	if npmResult.Err != nil {
+		restore()
+		combined := npmResult.CombinedOutput()
+		if opts.JSON {
+			output.PrintJson(io.Out, map[string]interface{}{
+				"ok": false, "error": map[string]interface{}{
+					"type": "update_error", "message": fmt.Sprintf("npm install failed: %s", npmResult.Err),
+					"detail": selfupdate.Truncate(combined, maxNpmOutput),
+					"hint":   permissionHint(combined),
+				},
+			})
+			return output.ErrBare(output.ExitAPI)
+		}
+		if npmResult.Stdout.Len() > 0 {
+			fmt.Fprint(io.ErrOut, npmResult.Stdout.String())
+		}
+		if npmResult.Stderr.Len() > 0 {
+			fmt.Fprint(io.ErrOut, npmResult.Stderr.String())
+		}
+		fmt.Fprintf(io.ErrOut, "\n%s Update failed: %s\n", symFail(), npmResult.Err)
+		if hint := permissionHint(combined); hint != "" {
+			fmt.Fprintf(io.ErrOut, "  %s\n", hint)
+		}
+		return output.ErrBare(output.ExitAPI)
+	}
+
+	// Verify the new binary is functional before proceeding.
+	// If corrupt, restore the previous version from .old.
+	if err := updater.VerifyBinary(latest); err != nil {
+		restore()
+		msg := fmt.Sprintf("new binary verification failed: %s", err)
+		hint := verificationFailureHint(updater, latest)
+		if opts.JSON {
+			output.PrintJson(io.Out, map[string]interface{}{
+				"ok":    false,
+				"error": map[string]interface{}{"type": "update_error", "message": msg, "hint": hint},
+			})
+			return output.ErrBare(output.ExitAPI)
+		}
+		fmt.Fprintf(io.ErrOut, "\n%s %s\n", symFail(), msg)
+		fmt.Fprintf(io.ErrOut, "  %s\n", hint)
+		return output.ErrBare(output.ExitAPI)
+	}
+
+	// Skills update (best-effort).
+	skillsResult := updater.RunSkillsUpdate()
+
+	if opts.JSON {
+		result := map[string]interface{}{
+			"ok": true, "previous_version": cur, "current_version": latest,
+			"latest_version": latest, "action": "updated",
+			"message": fmt.Sprintf("lark-cli updated from %s to %s", cur, latest),
+			"url":     releaseURL(latest), "changelog": changelogURL(),
+		}
+		if skillsResult.Err != nil {
+			result["skills_warning"] = fmt.Sprintf("skills update failed: %s", skillsResult.Err)
+			if detail := strings.TrimSpace(skillsResult.Stderr.String()); detail != "" {
+				result["skills_detail"] = selfupdate.Truncate(detail, maxNpmOutput)
+			}
+		}
+		output.PrintJson(io.Out, result)
+		return nil
+	}
+
+	fmt.Fprintf(io.ErrOut, "\n%s Successfully updated lark-cli from %s to %s\n", symOK(), cur, latest)
+	fmt.Fprintf(io.ErrOut, "  Changelog: %s\n", changelogURL())
+	fmt.Fprintf(io.ErrOut, "\nUpdating skills ...\n")
+	if skillsResult.Err != nil {
+		fmt.Fprintf(io.ErrOut, "%s Skills update failed: %s\n", symWarn(), skillsResult.Err)
+		if detail := strings.TrimSpace(skillsResult.Stderr.String()); detail != "" {
+			fmt.Fprintf(io.ErrOut, "  %s\n", selfupdate.Truncate(detail, 500))
+		}
+		fmt.Fprintf(io.ErrOut, "  Run manually: npx -y skills add larksuite/cli -g -y\n")
+	} else {
+		fmt.Fprintf(io.ErrOut, "%s Skills updated\n", symOK())
+	}
+	return nil
+}
+
+func permissionHint(npmOutput string) string {
+	if strings.Contains(npmOutput, "EACCES") && !isWindows() {
+		return "Permission denied. Try: sudo lark-cli update, or adjust your npm global prefix: https://docs.npmjs.com/resolving-eacces-permissions-errors"
+	}
+	return ""
+}
+
+func verificationFailureHint(updater *selfupdate.Updater, latest string) string {
+	if updater.CanRestorePreviousVersion() {
+		return "the previous version has been restored"
+	}
+	return fmt.Sprintf("automatic rollback is unavailable on this platform; reinstall manually: npm install -g %s@%s, or download %s", selfupdate.NpmPackage, latest, releaseURL(latest))
+}