Add extension normalization command

tests/integration/extension_flow_test.go

@@ -0,0 +1,78 @@
+package integration
+
+import (
+	"bytes"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	renamercmd "github.com/rogeecn/renamer/cmd"
+)
+
+func TestExtensionCommandFlow(t *testing.T) {
+	t.Parallel()
+
+	tmp := t.TempDir()
+	createFile(t, filepath.Join(tmp, "image.jpeg"))
+	createFile(t, filepath.Join(tmp, "poster.JPG"))
+	createFile(t, filepath.Join(tmp, "logo.jpg"))
+
+	var previewOut bytes.Buffer
+	preview := renamercmd.NewRootCommand()
+	preview.SetOut(&previewOut)
+	preview.SetErr(&previewOut)
+	preview.SetArgs([]string{"extension", ".jpeg", ".JPG", ".jpg", "--dry-run", "--path", tmp})
+
+	if err := preview.Execute(); err != nil {
+		t.Fatalf("preview command failed: %v\noutput: %s", err, previewOut.String())
+	}
+
+	output := previewOut.String()
+	if !strings.Contains(output, "image.jpeg -> image.jpg") {
+		t.Fatalf("expected preview output to include image rename, got:\n%s", output)
+	}
+	if !strings.Contains(output, "poster.JPG -> poster.jpg") {
+		t.Fatalf("expected preview output to include poster rename, got:\n%s", output)
+	}
+	if !strings.Contains(output, "logo.jpg (no change)") {
+		t.Fatalf("expected preview output to include no-change row for logo, got:\n%s", output)
+	}
+
+	var applyOut bytes.Buffer
+	apply := renamercmd.NewRootCommand()
+	apply.SetOut(&applyOut)
+	apply.SetErr(&applyOut)
+	apply.SetArgs([]string{"extension", ".jpeg", ".JPG", ".jpg", "--yes", "--path", tmp})
+
+	if err := apply.Execute(); err != nil {
+		t.Fatalf("apply command failed: %v\noutput: %s", err, applyOut.String())
+	}
+
+	if _, err := os.Stat(filepath.Join(tmp, "image.jpg")); err != nil {
+		t.Fatalf("expected image.jpg after apply: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(tmp, "poster.jpg")); err != nil {
+		t.Fatalf("expected poster.jpg after apply: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(tmp, "logo.jpg")); err != nil {
+		t.Fatalf("expected logo.jpg to remain: %v", err)
+	}
+
+	var undoOut bytes.Buffer
+	undo := renamercmd.NewRootCommand()
+	undo.SetOut(&undoOut)
+	undo.SetErr(&undoOut)
+	undo.SetArgs([]string{"undo", "--path", tmp})
+
+	if err := undo.Execute(); err != nil {
+		t.Fatalf("undo command failed: %v\noutput: %s", err, undoOut.String())
+	}
+
+	if _, err := os.Stat(filepath.Join(tmp, "image.jpeg")); err != nil {
+		t.Fatalf("expected image.jpeg after undo: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(tmp, "poster.JPG")); err != nil {
+		t.Fatalf("expected poster.JPG after undo: %v", err)
+	}
+}

tests/integration/extension_undo_test.go

@@ -0,0 +1,52 @@
+package integration
+
+import (
+	"bytes"
+	"os"
+	"path/filepath"
+	"testing"
+
+	renamercmd "github.com/rogeecn/renamer/cmd"
+)
+
+func TestExtensionAutomationUndo(t *testing.T) {
+	t.Parallel()
+
+	tmp := t.TempDir()
+	createFile(t, filepath.Join(tmp, "config.yaml"))
+	createFile(t, filepath.Join(tmp, "notes.yml"))
+
+	var applyOut bytes.Buffer
+	apply := renamercmd.NewRootCommand()
+	apply.SetOut(&applyOut)
+	apply.SetErr(&applyOut)
+	apply.SetArgs([]string{"extension", ".yaml", ".yml", ".yml", "--yes", "--path", tmp})
+
+	if err := apply.Execute(); err != nil {
+		t.Fatalf("automation apply failed: %v\noutput: %s", err, applyOut.String())
+	}
+
+	if _, err := os.Stat(filepath.Join(tmp, "config.yml")); err != nil {
+		t.Fatalf("expected config.yml after apply: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(tmp, "config.yaml")); !os.IsNotExist(err) {
+		t.Fatalf("expected config.yaml renamed, err=%v", err)
+	}
+
+	var undoOut bytes.Buffer
+	undo := renamercmd.NewRootCommand()
+	undo.SetOut(&undoOut)
+	undo.SetErr(&undoOut)
+	undo.SetArgs([]string{"undo", "--path", tmp})
+
+	if err := undo.Execute(); err != nil {
+		t.Fatalf("undo failed: %v\noutput: %s", err, undoOut.String())
+	}
+
+	if _, err := os.Stat(filepath.Join(tmp, "config.yaml")); err != nil {
+		t.Fatalf("expected config.yaml after undo: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(tmp, "config.yml")); !os.IsNotExist(err) {
+		t.Fatalf("expected config.yml removed after undo, err=%v", err)
+	}
+}

tests/integration/extension_validation_test.go

@@ -0,0 +1,42 @@
+package integration
+
+import (
+	"bytes"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	renamercmd "github.com/rogeecn/renamer/cmd"
+)
+
+func TestExtensionCommandBlocksConflicts(t *testing.T) {
+	t.Parallel()
+
+	tmp := t.TempDir()
+	createFile(t, filepath.Join(tmp, "doc.jpeg"))
+	createFile(t, filepath.Join(tmp, "doc.jpg"))
+
+	var out bytes.Buffer
+	cmd := renamercmd.NewRootCommand()
+	cmd.SetOut(&out)
+	cmd.SetErr(&out)
+	cmd.SetArgs([]string{"extension", ".jpeg", ".jpg", ".jpg", "--yes", "--path", tmp})
+
+	err := cmd.Execute()
+	if err == nil {
+		t.Fatalf("expected conflict to produce an error")
+	}
+
+	if !strings.Contains(out.String(), "existing") && !strings.Contains(out.String(), "conflict") {
+		t.Fatalf("expected conflict messaging in output, got: %s", out.String())
+	}
+
+	// Ensure files unchanged after failed apply.
+	if _, err := os.Stat(filepath.Join(tmp, "doc.jpeg")); err != nil {
+		t.Fatalf("expected doc.jpeg to remain: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(tmp, "doc.jpg")); err != nil {
+		t.Fatalf("expected doc.jpg to remain: %v", err)
+	}
+}