Allow to target resources when running local-preview (#268)

internal/cmd/stack/flags.go

@@ -32,6 +32,11 @@ var flagNoFindRepositoryRoot = &cli.BoolFlag{
 	Value: false,
 }
 
+var flagTarget = &cli.StringSliceFlag{
+	Name:  "target",
+	Usage: "List of targets to use during local preview, read more here: https://spacelift.io/blog/terraform-target",
+}
+
 var flagProjectRootOnly = &cli.BoolFlag{
 	Name:  "project-root-only",
 	Usage: "Indicate if spacelift should only package files inside this stacks project_root",

internal/cmd/stack/local_preview.go

@@ -21,6 +21,18 @@ func localPreview() cli.ActionFunc {
 			return err
 		}
 
+		if got := cliCtx.StringSlice(flagTarget.Name); len(got) > 0 {
+			var val string
+			for _, v := range got {
+				val = strings.Join([]string{val, "-target=" + v}, " ")
+			}
+
+			envVars = append(envVars, EnvironmentVariable{
+				Key:   "TF_CLI_ARGS_plan",
+				Value: graphql.String(strings.TrimSpace(val)),
+			})
+		}
+
 		stack, err := getStack(cliCtx)
 		if err != nil {
 			return err

internal/cmd/stack/stack.go

@@ -162,6 +162,7 @@ func Command() *cli.Command {
 					flagOverrideEnvVarsTF,
 					flagDisregardGitignore,
 					flagPrioritizeRun,
+					flagTarget,
 				},
 				Action:    localPreview(),
 				Before:    authenticated.Ensure,