UX for terraform init that copies state to TFC

internal/command/meta_backend_migrate.go

@@ -434,13 +434,22 @@ func (m *Meta) backendMigrateState_s_s(opts *backendMigrateOpts) error {
 }
 
 func (m *Meta) backendMigrateEmptyConfirm(source, destination statemgr.Full, opts *backendMigrateOpts) (bool, error) {
-	inputOpts := &terraform.InputOpts{
+	var inputOpts *terraform.InputOpts
+	if opts.DestinationType == "cloud" {
+		inputOpts = &terraform.InputOpts{
+			Id:          "backend-migrate-copy-to-empty-cloud",
+			Query:       "Do you want to copy existing state to Terraform Cloud?",
+			Description: fmt.Sprintf(strings.TrimSpace(inputBackendMigrateEmptyCloud), opts.SourceType),
+		}
+	} else {
+		inputOpts = &terraform.InputOpts{
 			Id:    "backend-migrate-copy-to-empty",
 			Query: "Do you want to copy existing state to the new backend?",
 			Description: fmt.Sprintf(
 				strings.TrimSpace(inputBackendMigrateEmpty),
 				opts.SourceType, opts.DestinationType),
 		}
+	}
 
 	return m.confirm(inputOpts)
 }
@@ -475,13 +484,24 @@ func (m *Meta) backendMigrateNonEmptyConfirm(
 	}
 
 	// Ask for confirmation
-	inputOpts := &terraform.InputOpts{
+	var inputOpts *terraform.InputOpts
+	if opts.DestinationType == "cloud" {
+		inputOpts = &terraform.InputOpts{
+			Id:    "backend-migrate-to-tfc",
+			Query: "Do you want to copy existing state to Terraform Cloud?",
+			Description: fmt.Sprintf(
+				strings.TrimSpace(inputBackendMigrateNonEmptyCloud),
+				opts.SourceType, sourcePath, destinationPath),
+		}
+	} else {
+		inputOpts = &terraform.InputOpts{
 			Id:    "backend-migrate-to-backend",
 			Query: "Do you want to copy existing state to the new backend?",
 			Description: fmt.Sprintf(
 				strings.TrimSpace(inputBackendMigrateNonEmpty),
 				opts.SourceType, opts.DestinationType, sourcePath, destinationPath),
 		}
+	}
 
 	// Confirm with the user that the copy should occur
 	return m.confirm(inputOpts)
@@ -807,6 +827,12 @@ configured %[2]q backend. Do you want to copy this state to the new %[2]q
 backend? Enter "yes" to copy and "no" to start with an empty state.
 `
 
+const inputBackendMigrateEmptyCloud = `
+Pre-existing state was found while migrating the previous %q backend to Terraform Cloud.
+No existing state was found in Terraform Cloud. Do you want to copy this state to Terraform Cloud?
+Enter "yes" to copy and "no" to start with an empty state.
+`
+
 const inputBackendMigrateNonEmpty = `
 Pre-existing state was found while migrating the previous %q backend to the
 newly configured %q backend. An existing non-empty state already exists in
@@ -821,6 +847,19 @@ Enter "yes" to copy and "no" to start with the existing state in the newly
 configured %[2]q backend.
 `
 
+const inputBackendMigrateNonEmptyCloud = `
+Pre-existing state was found while migrating the previous %q backend to
+Terraform Cloud. An existing non-empty state already exists in Terraform Cloud.
+The two states have been saved to temporary files that will be removed after
+responding to this query.
+
+Previous (type %[1]q): %[2]s
+New      (Terraform Cloud): %[3]s
+
+Do you want to overwrite the state in Terraform Cloud with the previous state?
+Enter "yes" to copy and "no" to start with the existing state in Terraform Cloud.
+`
+
 const inputBackendMigrateMultiToSingle = `
 The existing %[1]q backend supports workspaces and you currently are
 using more than one. The newly configured %[2]q backend doesn't support