feat: Expose managed variables via API (#6134)

* WIP

* hcl

* useManagedVariables

* fix

* Fix

* Fix

* fix

* go:build

* Fix

* fix: bool flag

* Insert template variables

* API

* fix

* Expose via API

* More wiring

* CLI for testing purposes

* WIP

* Delete FIXME

* planVars

* WIP

* WIP

* UserVariableValues

* no dry run

* Dry run

* Done FIXME

* Fix

* Fix: CLI

* Fix: migration

* API tests

* Test info

* Tests

* More tests

* fix: lint

* Fix: authz

* Address PR comments

* Fix

* fix

* fix

cli/templatecreate.go

@@ -133,6 +133,7 @@ type createValidTemplateVersionArgs struct {
 	Provisioner   database.ProvisionerType
 	FileID        uuid.UUID
 	ParameterFile string
+	ValuesFile    string
 	// Template is only required if updating a template's active version.
 	Template *codersdk.Template
 	// ReuseParameters will attempt to reuse params from the Template field
@@ -145,13 +146,21 @@ type createValidTemplateVersionArgs struct {
 func createValidTemplateVersion(cmd *cobra.Command, args createValidTemplateVersionArgs, parameters ...codersdk.CreateParameterRequest) (*codersdk.TemplateVersion, []codersdk.CreateParameterRequest, error) {
 	client := args.Client
 
+	// FIXME(mtojek): I will iterate on CLI experience in the follow-up.
+	// see: https://github.com/coder/coder/issues/5980
+	variableValues, err := loadVariableValues(args.ValuesFile)
+	if err != nil {
+		return nil, nil, err
+	}
+
 	req := codersdk.CreateTemplateVersionRequest{
-		Name:            args.Name,
-		StorageMethod:   codersdk.ProvisionerStorageMethodFile,
-		FileID:          args.FileID,
-		Provisioner:     codersdk.ProvisionerType(args.Provisioner),
-		ParameterValues: parameters,
-		ProvisionerTags: args.ProvisionerTags,
+		Name:               args.Name,
+		StorageMethod:      codersdk.ProvisionerStorageMethodFile,
+		FileID:             args.FileID,
+		Provisioner:        codersdk.ProvisionerType(args.Provisioner),
+		ParameterValues:    parameters,
+		ProvisionerTags:    args.ProvisionerTags,
+		UserVariableValues: variableValues,
 	}
 	if args.Template != nil {
 		req.TemplateID = args.Template.ID