enhance: add gptscript module version to /api/version

- Add the module version for `github.com/gptscript-ai/gptscript` to
  the `/api/version` API response
- Change `/api/version` API response field name from `otto` to `obot`

Signed-off-by: Nick Hale <[email protected]>

go.mod

@@ -33,6 +33,7 @@ require (
 	github.com/spf13/cobra v1.8.1
 	golang.org/x/crypto v0.31.0
 	golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c
+	golang.org/x/mod v0.21.0
 	golang.org/x/term v0.27.0
 	golang.org/x/text v0.21.0
 	gopkg.in/yaml.v3 v3.0.1
@@ -254,7 +255,6 @@ require (
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.26.0 // indirect
 	go4.org v0.0.0-20230225012048-214862532bf5 // indirect
-	golang.org/x/mod v0.21.0 // indirect
 	golang.org/x/net v0.30.0 // indirect
 	golang.org/x/oauth2 v0.23.0 // indirect
 	golang.org/x/sync v0.10.0 // indirect

pkg/api/handlers/version.go

@@ -2,19 +2,24 @@ package handlers
 
 import (
 	"os"
+	"runtime/debug"
+	"strings"
 
 	"github.com/obot-platform/obot/pkg/api"
 	"github.com/obot-platform/obot/pkg/version"
+	"golang.org/x/mod/module"
 	"sigs.k8s.io/yaml"
 )
 
 type VersionHandler struct {
-	emailDomain string
+	gptscriptVersion string
+	emailDomain      string
 }
 
 func NewVersionHandler(emailDomain string) *VersionHandler {
 	return &VersionHandler{
-		emailDomain: emailDomain,
+		emailDomain:      emailDomain,
+		gptscriptVersion: getGPTScriptVersion(),
 	}
 }
 
@@ -30,7 +35,52 @@ func (v *VersionHandler) getVersionResponse() map[string]string {
 			values["error"] = err.Error()
 		}
 	}
-	values["otto"] = version.Get().String()
+	values["obot"] = version.Get().String()
+	values["gptscript"] = v.gptscriptVersion
 	values["emailDomain"] = v.emailDomain
 	return values
 }
+
+const gptscriptModulePath = "github.com/gptscript-ai/gptscript"
+
+func getGPTScriptVersion() string {
+	bi, _ := debug.ReadBuildInfo()
+
+	var gptscriptVersion string
+	for _, dep := range bi.Deps {
+		if dep.Path == gptscriptModulePath {
+			gptscriptVersion = simplifyModuleVersion(dep.Version)
+			break
+		}
+	}
+
+	return gptscriptVersion
+}
+
+// simplifyModuleVersion returns a simplified variant of a given module version string.
+// If the given version is a Go pseudo-version, it strips the timestamp and truncates the revision to the first 7 characters.
+// Empty strings and non-Go pseudo-versions are returned unaltered.
+func simplifyModuleVersion(version string) string {
+	if version == "" || !module.IsPseudoVersion(version) {
+		return version
+	}
+
+	// Extract the base version (tag) and revision (commit hash)
+	// Ignore errors, this should never happen if compilation succeeded
+	components := make([]string, 0, 2)
+	if base, err := module.PseudoVersionBase(version); err == nil && base != "" {
+		components = append(components, base)
+	}
+
+	if rev, err := module.PseudoVersionRev(version); err == nil && len(rev) > 0 {
+		// Shorten the hash to the first 7 characters
+		if len(rev) > 7 {
+			rev = rev[:7]
+		}
+
+		components = append(components, rev)
+	}
+
+	// Combine the base version with the shortened hash
+	return strings.Join(components, "-")
+}