feat: add a switch to control the auto-updating for mod file

pkg/client/client_test.go

@@ -1146,7 +1146,6 @@ func testMetadataOffline(t *testing.T) {
 	testDir := getTestDir("test_metadata_offline")
 	kclMod := filepath.Join(testDir, "kcl.mod")
 	uglyKclMod := filepath.Join(testDir, "ugly.kcl.mod")
-	BeautifulKclMod := filepath.Join(testDir, "beautiful.kcl.mod")
 
 	uglyContent, err := os.ReadFile(uglyKclMod)
 	assert.Equal(t, err, nil)
@@ -1157,8 +1156,6 @@ func testMetadataOffline(t *testing.T) {
 		assert.Equal(t, err, nil)
 	}()
 
-	beautifulContent, err := os.ReadFile(BeautifulKclMod)
-	assert.Equal(t, err, nil)
 	kclPkg, err := pkg.LoadKclPkg(testDir)
 	assert.Equal(t, err, nil)
 
@@ -1178,7 +1175,7 @@ func testMetadataOffline(t *testing.T) {
 	assert.Equal(t, res, "{\"packages\":{}}")
 	content_after_metadata, err = os.ReadFile(kclMod)
 	assert.Equal(t, err, nil)
-	assert.Equal(t, utils.RmNewline(string(content_after_metadata)), utils.RmNewline(string(beautifulContent)))
+	assert.Equal(t, utils.RmNewline(string(content_after_metadata)), utils.RmNewline(string(uglyContent)))
 }
 
 func testAddWithNoSumCheck(t *testing.T) {

pkg/client/metadata.go

@@ -20,6 +20,7 @@ func (c *KpmClient) ResolvePkgDepsMetadata(kclPkg *pkg.KclPkg, update bool) erro
 		_, err = c.Update(
 			WithUpdatedKclPkg(kclPkg),
 			WithOffline(!update),
+			WithUpdateModFile(false),
 		)
 	}
 	return err

pkg/client/update.go

@@ -20,12 +20,21 @@ import (
 // Updating a package means iterating all the dependencies of the package
 // and updating the dependencies and selecting the version of the dependencies by MVS.
 type UpdateOptions struct {
-	kpkg    *pkg.KclPkg
-	offline bool
+	kpkg          *pkg.KclPkg
+	offline       bool
+	updateModFile bool
 }
 
 type UpdateOption func(*UpdateOptions) error
 
+// WithUpdateModFile sets the flag to update the mod file.
+func WithUpdateModFile(updateModFile bool) UpdateOption {
+	return func(opts *UpdateOptions) error {
+		opts.updateModFile = updateModFile
+		return nil
+	}
+}
+
 // WithOffline sets the offline option to update the package.
 func WithOffline(offline bool) UpdateOption {
 	return func(opts *UpdateOptions) error {
@@ -43,7 +52,7 @@ func WithUpdatedKclPkg(kpkg *pkg.KclPkg) UpdateOption {
 }
 
 func (c *KpmClient) Update(options ...UpdateOption) (*pkg.KclPkg, error) {
-	opts := &UpdateOptions{}
+	opts := &UpdateOptions{updateModFile: true}
 	for _, option := range options {
 		if err := option(opts); err != nil {
 			return nil, err
@@ -143,7 +152,7 @@ func (c *KpmClient) Update(options ...UpdateOption) (*pkg.KclPkg, error) {
 		return nil, err
 	}
 
-	if !opts.offline {
+	if opts.updateModFile {
 		err = kMod.UpdateModAndLockFile()
 		if err != nil {
 			return nil, err