forgot to add the plan file

Author: Emyrk

cli/plan.go

@@ -0,0 +1,60 @@
+package cli
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"os/exec"
+
+	"github.com/coder/serpent"
+)
+
+func (r *RootCmd) TerraformPlan() *serpent.Command {
+	cmd := &serpent.Command{
+		Use:   "plan",
+		Short: "Runs `terraform init -upgrade` and `terraform plan`, saving the output.",
+		// This command is mainly for developing the preview tool.
+		Hidden: true,
+		Handler: func(i *serpent.Invocation) error {
+			ctx := i.Context()
+
+			cmd := exec.CommandContext(ctx, "terraform", "init", "-upgrade")
+			cmd.Stdin = i.Stdin
+			cmd.Stdout = i.Stdout
+			cmd.Stderr = i.Stderr
+
+			if err := cmd.Run(); err != nil {
+				return fmt.Errorf("terraform init: %w", err)
+			}
+
+			cmd = exec.CommandContext(ctx, "terraform", "plan", "-out", "out.plan")
+			cmd.Stdin = i.Stdin
+			cmd.Stdout = i.Stdout
+			cmd.Stderr = i.Stderr
+
+			if err := cmd.Run(); err != nil {
+				return fmt.Errorf("terraform plan: %w", err)
+			}
+
+			var buf bytes.Buffer
+			cmd = exec.CommandContext(ctx, "terraform", "show", "-json", "out.plan")
+			cmd.Stdin = i.Stdin
+			cmd.Stdout = &buf
+			cmd.Stderr = i.Stderr
+
+			if err := cmd.Run(); err != nil {
+				_, _ = cmd.Stdout.Write(buf.Bytes())
+				return fmt.Errorf("terraform show: %w", err)
+			}
+
+			if !cmd.ProcessState.Success() {
+				return fmt.Errorf("terraform show not successful: %w", cmd.ProcessState)
+			}
+
+			_ = os.WriteFile("plan.json", buf.Bytes(), 0644)
+			return nil
+		},
+	}
+
+	return cmd
+}