implement Executor pattern

internal/zfs/zfs.go

@@ -11,6 +11,7 @@ import (
 	"strings"
 	"time"
 
+	"git.gentoo.party/sam/thanks/internal/executor"
 	"git.gentoo.party/sam/thanks/internal/runner"
 )
 
@@ -37,6 +38,20 @@ func Cmd(ctx context.Context, arg string, a ...any) ([]byte, error) {
 	return out, err
 }
 
+func CreateSnapshot(ctx context.Context, e executor.Executor, dataset, name string) error {
+	_, err := e.CombinedOutput(
+		ctx,
+		"zfs",
+		"snapshot",
+		fmt.Sprintf("%s@%s", dataset, name),
+	)
+	if err != nil {
+		return fmt.Errorf("zfs-snapshot error: %w", err)
+	}
+
+	return nil
+}
+
 func ParseSnapshots(reader io.Reader) ([]Snapshot, error) {
 	scanner := bufio.NewScanner(reader)
 
@@ -78,33 +93,8 @@ func ParseSnapshots(reader io.Reader) ([]Snapshot, error) {
 	return snaps, nil
 }
 
-type Host struct {
-	SSH     string
-	ZFSPath string
-}
-
-func (h *Host) CommandContext(ctx context.Context, name string, arg ...string) *exec.Cmd {
-	var args []string
-	if h.SSH != "" {
-		name = "ssh"
-		args = append([]string{"ssh", h.SSH}, arg...)
-	} else {
-		args = arg
-	}
-
-	cmd := exec.CommandContext(
-		ctx,
-		name,
-		args...,
-	)
-
-	return cmd
-}
-
-// h.Comman
-
-func Snapshots(ctx context.Context, target string) ([]Snapshot, error) {
-	cmd := exec.CommandContext(
+func Snapshots(ctx context.Context, e executor.Executor, target string) ([]Snapshot, error) {
+	cmd := e.CommandContext(
 		ctx,
 		"zfs",
 		"list",
@@ -182,7 +172,6 @@ func IncrementalSend(ctx context.Context, prevSnapName, newSnapName, sshTarget,
 	)
 }
 
-func Destroy(ctx context.Context, target string) ([]byte, error) {
-	cmd := exec.CommandContext(ctx, "zfs", "destroy", target)
-	return cmd.CombinedOutput()
+func Destroy(ctx context.Context, e executor.Executor, target string) ([]byte, error) {
+	return e.CombinedOutput(ctx, "zfs", target)
 }