Command to set current stack commit (#13)

internal/cmd/stack/flags.go

@@ -13,6 +13,11 @@ var flagCommitSHA = &cli.StringFlag{
 	Usage: "Commit SHA for the newly created run",
 }
 
+var flagRequiredCommitSHA = &cli.StringFlag{
+	Name:  "sha",
+	Usage: "SHA of the commit to set as canonical for the stack",
+}
+
 var flagRun = &cli.StringFlag{
 	Name:     "run",
 	Usage:    "ID of the run",

internal/cmd/stack/set_current_commit.go

@@ -0,0 +1,44 @@
+package stack
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+
+	"github.com/shurcooL/graphql"
+	"github.com/urfave/cli/v2"
+
+	"github.com/spacelift-io/spacectl/internal/cmd/authenticated"
+)
+
+func setCurrentCommit(cliCtx *cli.Context) error {
+	var mutation struct {
+		SetCurrentCommmit struct {
+			TrackedCommit *struct {
+				Hash    string `graphql:"hash"`
+				Message string `graphql:"message"`
+			} `grapqhl:"trackedCommit"`
+		} `graphql:"stackSetCurrentCommit(id: $stack, sha: $sha)"`
+	}
+
+	variables := map[string]interface{}{
+		"sha":   graphql.String(cliCtx.String(flagRequiredCommitSHA.Name)),
+		"stack": graphql.ID(stackID),
+	}
+
+	ctx := context.Background()
+
+	if err := authenticated.Client.Mutate(ctx, &mutation, variables); err != nil {
+		return err
+	}
+
+	commit := mutation.SetCurrentCommmit.TrackedCommit
+	if commit == nil {
+		return errors.New("no tracked commit set on the Stack")
+	}
+
+	_, err := fmt.Fprintf(os.Stdout, "Current commit set to %q: (SHA %s)", commit.Message, commit.Hash)
+
+	return err
+}

internal/cmd/stack/stack.go

@@ -56,6 +56,13 @@ func Command() *cli.Command {
 				},
 				Action: runTrigger("PROPOSED", "preview"),
 			},
+			{
+				Category: "Stack management",
+				Name:     "set-current-commit",
+				Usage:    "Set current commit on the stack",
+				Flags:    []cli.Flag{flagRequiredCommitSHA},
+				Action:   setCurrentCommit,
+			},
 			{
 				Category: "Run management",
 				Name:     "task",