feat: implement remove command with sequential removals

tests/integration/remove_flow_test.go

@@ -0,0 +1,86 @@
+package integration
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/rogeecn/renamer/internal/history"
+	"github.com/rogeecn/renamer/internal/remove"
+)
+
+func TestRemoveApplyAndUndo(t *testing.T) {
+	tmp := t.TempDir()
+
+	createFile(t, filepath.Join(tmp, "report copy draft.txt"))
+	createFile(t, filepath.Join(tmp, "nested", "notes draft.txt"))
+
+	parsed, err := remove.ParseArgs([]string{" copy", " draft"})
+	if err != nil {
+		t.Fatalf("ParseArgs error: %v", err)
+	}
+
+	req := &remove.Request{
+		WorkingDir: tmp,
+		Tokens:     parsed.Tokens,
+		Recursive:  true,
+	}
+	if err := req.Validate(); err != nil {
+		t.Fatalf("request validation error: %v", err)
+	}
+
+	summary, planned, err := remove.Preview(context.Background(), req, parsed, nil)
+	if err != nil {
+		t.Fatalf("Preview error: %v", err)
+	}
+
+	if summary.ChangedCount != 2 {
+		t.Fatalf("expected 2 changes, got %d", summary.ChangedCount)
+	}
+
+	entry, err := remove.Apply(context.Background(), req, planned, summary, parsed.Tokens)
+	if err != nil {
+		t.Fatalf("Apply error: %v", err)
+	}
+
+	if len(entry.Operations) != 2 {
+		t.Fatalf("expected 2 operations recorded, got %d", len(entry.Operations))
+	}
+	if entry.Metadata == nil {
+		t.Fatalf("expected metadata to be recorded")
+	}
+	tokens, ok := entry.Metadata["tokens"].([]string)
+	if !ok {
+		t.Fatalf("expected ordered tokens metadata, got %#v", entry.Metadata)
+	}
+	if len(tokens) != 2 || tokens[0] != " copy" || tokens[1] != " draft" {
+		t.Fatalf("unexpected tokens metadata: %#v", tokens)
+	}
+	matches, ok := entry.Metadata["matches"].(map[string]int)
+	if !ok {
+		t.Fatalf("expected matches metadata, got %#v", entry.Metadata)
+	}
+	if matches[" copy"] != 1 || matches[" draft"] != 2 {
+		t.Fatalf("unexpected match counts: %#v", matches)
+	}
+
+	if _, err := os.Stat(filepath.Join(tmp, "report.txt")); err != nil {
+		t.Fatalf("expected renamed file exists: %v", err)
+	}
+
+	if _, err := os.Stat(filepath.Join(tmp, "nested", "notes.txt")); err != nil {
+		t.Fatalf("expected nested rename exists: %v", err)
+	}
+
+	if _, err := history.Undo(tmp); err != nil {
+		t.Fatalf("undo error: %v", err)
+	}
+
+	if _, err := os.Stat(filepath.Join(tmp, "report copy draft.txt")); err != nil {
+		t.Fatalf("expected original restored: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(tmp, "nested", "notes draft.txt")); err != nil {
+		t.Fatalf("expected nested original restored: %v", err)
+	}
+}

tests/integration/remove_undo_test.go

@@ -0,0 +1,57 @@
+package integration
+
+import (
+	"bytes"
+	"os"
+	"path/filepath"
+	"testing"
+
+	renamercmd "github.com/rogeecn/renamer/cmd"
+)
+
+func TestRemoveCommandAutomationUndo(t *testing.T) {
+	tmp := t.TempDir()
+
+	createFile(t, filepath.Join(tmp, "alpha copy.txt"))
+	createFile(t, filepath.Join(tmp, "nested", "beta draft.txt"))
+
+	preview := renamercmd.NewRootCommand()
+	var previewOut bytes.Buffer
+	preview.SetOut(&previewOut)
+	preview.SetErr(&previewOut)
+	preview.SetArgs([]string{"remove", " copy", " draft", "--path", tmp, "--recursive", "--dry-run"})
+	if err := preview.Execute(); err != nil {
+		t.Fatalf("preview failed: %v\noutput: %s", err, previewOut.String())
+	}
+
+	apply := renamercmd.NewRootCommand()
+	var applyOut bytes.Buffer
+	apply.SetOut(&applyOut)
+	apply.SetErr(&applyOut)
+	apply.SetArgs([]string{"remove", " copy", " draft", "--path", tmp, "--recursive", "--yes"})
+	if err := apply.Execute(); err != nil {
+		t.Fatalf("apply failed: %v\noutput: %s", err, applyOut.String())
+	}
+
+	if !fileExists(filepath.Join(tmp, "alpha.txt")) || !fileExists(filepath.Join(tmp, "nested", "beta.txt")) {
+		t.Fatalf("expected files renamed after apply")
+	}
+
+	undo := renamercmd.NewRootCommand()
+	var undoOut bytes.Buffer
+	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 !fileExists(filepath.Join(tmp, "alpha copy.txt")) || !fileExists(filepath.Join(tmp, "nested", "beta draft.txt")) {
+		t.Fatalf("expected originals restored after undo")
+	}
+}
+
+func fileExists(path string) bool {
+	_, err := os.Stat(path)
+	return err == nil
+}

tests/integration/remove_validation_test.go

@@ -0,0 +1,62 @@
+package integration
+
+import (
+	"bytes"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	renamercmd "github.com/rogeecn/renamer/cmd"
+)
+
+func TestRemoveCommandEmptyBasenameWarning(t *testing.T) {
+	tmp := t.TempDir()
+
+	createValidationFile(t, filepath.Join(tmp, "draft"))
+	createValidationFile(t, filepath.Join(tmp, "draft copy.txt"))
+
+	root := renamercmd.NewRootCommand()
+	var out bytes.Buffer
+	root.SetOut(&out)
+	root.SetErr(&out)
+	root.SetArgs([]string{"remove", "draft", "--path", tmp, "--dry-run"})
+
+	if err := root.Execute(); err != nil {
+		t.Fatalf("remove dry-run failed: %v\noutput: %s", err, out.String())
+	}
+
+	if !strings.Contains(out.String(), "Warning: draft would become empty; skipping") {
+		t.Fatalf("expected empty basename warning, got: %s", out.String())
+	}
+}
+
+func TestRemoveCommandDuplicateWarning(t *testing.T) {
+	tmp := t.TempDir()
+
+	createValidationFile(t, filepath.Join(tmp, "foo draft draft.txt"))
+
+	root := renamercmd.NewRootCommand()
+	var out bytes.Buffer
+	root.SetOut(&out)
+	root.SetErr(&out)
+	root.SetArgs([]string{"remove", " draft", " draft", "--path", tmp, "--dry-run"})
+
+	if err := root.Execute(); err != nil {
+		t.Fatalf("remove dry-run failed: %v\noutput: %s", err, out.String())
+	}
+
+	if !strings.Contains(out.String(), "Warning: token \" draft\" provided multiple times") {
+		t.Fatalf("expected duplicate warning, got: %s", out.String())
+	}
+}
+
+func createValidationFile(t *testing.T, path string) {
+	t.Helper()
+	if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil {
+		t.Fatalf("mkdir %s: %v", path, err)
+	}
+	if err := os.WriteFile(path, []byte("x"), 0o644); err != nil {
+		t.Fatalf("write file %s: %v", path, err)
+	}
+}