Add bulk author replacement

README.md

@@ -13,6 +13,7 @@ Repository: https://github.com/andydixon/nexus
   - committer name, email, and date/time
   - full commit message
 - Search commits by hash, message, author name, or email
+- Bulk replace author names and emails using case-insensitive partial or exact matching
 - Track edited commits and reset the selected commit
 - Apply all staged metadata changes in one action
 - Optionally force push rewritten branches and tags to `origin`
@@ -23,6 +24,7 @@ Repository: https://github.com/andydixon/nexus
 - `Shift+Tab`: move backward through form fields
 - `Up`/`Down`, `PgUp`/`PgDn`, `Home`/`End`: navigate commits
 - `/`: search commits
+- `b`: bulk replace matching author names and emails; `Ctrl+T` toggles partial/exact matching
 - `p`: switch repository path
 - `r`: reload history
 - `x`: reset the selected commit
@@ -67,4 +69,3 @@ History rewriting changes commit hashes and can disrupt shared branches. Coordin
 ## Licence
 
 This project is proprietary software. It is **not** released under the MIT licence.
-

tui.go

@@ -24,6 +24,13 @@ const (
 	formFieldCount
 )
 
+const (
+	bulkAuthorSearch = iota
+	bulkAuthorName
+	bulkAuthorEmail
+	bulkAuthorFieldCount
+)
+
 type uiFocus int
 
 const (
@@ -37,6 +44,7 @@ const (
 	overlayNone uiOverlay = iota
 	overlaySearch
 	overlayPath
+	overlayBulkAuthor
 	overlayConfirmApply
 	overlayConfirmForce
 	overlayHelp
@@ -145,6 +153,9 @@ type tuiModel struct {
 	searchInput      textinput.Model
 	pathInput        textinput.Model
 	confirmInput     textinput.Model
+	bulkAuthorFocus  int
+	bulkAuthorInputs []textinput.Model
+	bulkAuthorExact  bool
 
 	forcePush bool
 	pushTags  bool
@@ -191,6 +202,14 @@ func newTUIModel(app *App, initialPath string) tuiModel {
 	confirmInput := newTextInput()
 	confirmInput.Placeholder = "FORCE"
 
+	bulkAuthorInputs := make([]textinput.Model, bulkAuthorFieldCount)
+	for i := range bulkAuthorInputs {
+		bulkAuthorInputs[i] = newTextInput()
+	}
+	bulkAuthorInputs[bulkAuthorSearch].Placeholder = "Existing author name or email"
+	bulkAuthorInputs[bulkAuthorName].Placeholder = "Replacement author name"
+	bulkAuthorInputs[bulkAuthorEmail].Placeholder = "Replacement author email"
+
 	return tuiModel{
 		app:              app,
 		initialPath:      initialPath,
@@ -201,6 +220,7 @@ func newTUIModel(app *App, initialPath string) tuiModel {
 		searchInput:      searchInput,
 		pathInput:        pathInput,
 		confirmInput:     confirmInput,
+		bulkAuthorInputs: bulkAuthorInputs,
 		pushTags:         true,
 		status:           "Loading repository...",
 		statusKind:       statusInfo,
@@ -313,6 +333,8 @@ func (m tuiModel) handleKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		return m.updateSearch(msg)
 	case overlayPath:
 		return m.updatePathEntry(msg)
+	case overlayBulkAuthor:
+		return m.updateBulkAuthor(msg)
 	case overlayConfirmApply, overlayConfirmForce:
 		return m.updateConfirmation(msg)
 	}
@@ -333,6 +355,12 @@ func (m tuiModel) handleKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	case "p", "o":
 		m.overlay = overlayPath
 		m.focusPathInput()
+	case "b":
+		if m.repoLoaded {
+			m.openBulkAuthor()
+		} else {
+			m.setStatus("Load a repository before replacing authors.", statusError)
+		}
 	case "r":
 		if m.repository.Path != "" {
 			m.busy = true
@@ -419,6 +447,56 @@ func (m tuiModel) updatePathEntry(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	return m, cmd
 }
 
+func (m tuiModel) updateBulkAuthor(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
+	switch msg.String() {
+	case "esc":
+		m.overlay = overlayNone
+		m.blurBulkAuthorInputs()
+		m.setStatus("Bulk author replacement cancelled.", statusInfo)
+		return m, nil
+	case "tab", "shift+tab":
+		delta := 1
+		if msg.String() == "shift+tab" {
+			delta = -1
+		}
+		next := (m.bulkAuthorFocus + delta + bulkAuthorFieldCount) % bulkAuthorFieldCount
+		m.focusBulkAuthorField(next)
+		return m, nil
+	case "ctrl+t":
+		m.bulkAuthorExact = !m.bulkAuthorExact
+		m.setStatus(fmt.Sprintf("Author match mode: %s.", authorMatchMode(m.bulkAuthorExact)), statusInfo)
+		return m, nil
+	case "enter":
+		m.syncFormToDraft()
+		matched, err := stageAuthorReplacement(
+			m.commits,
+			m.draftByHash,
+			m.bulkAuthorInputs[bulkAuthorSearch].Value(),
+			m.bulkAuthorInputs[bulkAuthorName].Value(),
+			m.bulkAuthorInputs[bulkAuthorEmail].Value(),
+			m.bulkAuthorExact,
+		)
+		if err != nil {
+			m.setStatus(err.Error(), statusError)
+			return m, nil
+		}
+		if matched == 0 {
+			m.setStatus("No author names or emails matched the search.", statusInfo)
+			return m, nil
+		}
+		m.overlay = overlayNone
+		m.blurBulkAuthorInputs()
+		m.reconcileSelection()
+		m.loadSelectedCommitIntoForm()
+		m.setStatus(fmt.Sprintf("Staged author replacement for %d commit%s.", matched, plural(matched)), statusSuccess)
+		return m, nil
+	}
+
+	var cmd tea.Cmd
+	m.bulkAuthorInputs[m.bulkAuthorFocus], cmd = m.bulkAuthorInputs[m.bulkAuthorFocus].Update(msg)
+	return m, cmd
+}
+
 func (m tuiModel) updateConfirmation(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	key := msg.String()
 	if key == "esc" || key == "n" {
@@ -599,13 +677,16 @@ func (m tuiModel) renderBottomBar(width int) string {
 	}
 
 	status := lipgloss.NewStyle().Foreground(statusColor).Render(truncateText(m.status, contentWidth))
-	help := "Tab form/list  / search  p path  r reload  x reset  a apply  f force  t tags  ? help  q quit"
+	help := "Tab form/list  / search  b bulk author  p path  r reload  x reset  a apply  f force  t tags  ? help  q quit"
 	if m.focus == focusForm {
 		help = "Tab next field  Shift+Tab previous  Esc list  Enter newline in message  Ctrl+C quit"
 	}
 	if m.overlay == overlayPath {
 		help = "Enter load repository  Esc close"
 	}
+	if m.overlay == overlayBulkAuthor {
+		help = "Tab next field  Shift+Tab previous  Ctrl+T partial/exact  Enter stage  Esc cancel"
+	}
 	if m.overlay == overlayConfirmApply {
 		help = "Press y to rewrite history, n/Esc to cancel"
 	}
@@ -702,6 +783,8 @@ func (m tuiModel) renderDetailPane(width int, height int) string {
 	switch m.overlay {
 	case overlayPath:
 		content = m.renderPathPane(innerWidth, innerHeight)
+	case overlayBulkAuthor:
+		content = m.renderBulkAuthorPane(innerWidth, innerHeight)
 	case overlayConfirmApply, overlayConfirmForce:
 		content = m.renderConfirmPane(innerWidth, innerHeight)
 	case overlayHelp:
@@ -713,6 +796,29 @@ func (m tuiModel) renderDetailPane(width int, height int) string {
 	return renderBox(style, width, height, content)
 }
 
+func (m tuiModel) renderBulkAuthorPane(width int, height int) string {
+	lines := []string{
+		headerStyle.Render("Bulk replace author"),
+		"Search current draft author names and emails, then stage a new author identity on every matching commit.",
+		"",
+		m.renderBulkAuthorField(bulkAuthorSearch, "Search", width),
+		m.renderBulkAuthorField(bulkAuthorName, "Replacement author name", width),
+		m.renderBulkAuthorField(bulkAuthorEmail, "Replacement author email", width),
+		"",
+		fmt.Sprintf("Match mode: %s  %s", authorMatchMode(m.bulkAuthorExact), dimStyle.Render("(Ctrl+T to toggle)")),
+		dimStyle.Render("Press Enter to stage these changes. Use a to apply the history rewrite."),
+	}
+	return fitLines(wrapBlockLines(lines, width), height, width)
+}
+
+func (m tuiModel) renderBulkAuthorField(index int, label string, width int) string {
+	style := blurredFieldStyle
+	if m.overlay == overlayBulkAuthor && m.bulkAuthorFocus == index {
+		style = focusedFieldStyle
+	}
+	return renderBox(style, width, 0, fieldLabelStyle.Render(label)+"\n"+m.bulkAuthorInputs[index].View())
+}
+
 func (m tuiModel) renderPathPane(width int, height int) string {
 	lines := []string{
 		headerStyle.Render("Open Repository"),
@@ -756,7 +862,7 @@ func (m tuiModel) renderHelpPane(width int, height int) string {
 		"List: Up/Down, PgUp/PgDn, Home/End select commits.",
 		"Tab moves from the list into the commit form.",
 		"Form: Tab and Shift+Tab move through every editable value. Esc returns to the list.",
-		"/ searches commits. p opens a repository path prompt. r reloads history.",
+		"/ searches commits. b bulk-replaces author identities. p opens a repository path prompt. r reloads history.",
 		"x resets the selected commit. a applies edits. f toggles force push. t toggles tag push.",
 		"",
 		headerStyle.Render("Safety"),
@@ -876,6 +982,36 @@ func (m *tuiModel) updateComponentSizes() {
 	m.searchInput.Width = maxInt(16, width-10)
 	m.pathInput.Width = maxInt(4, contentWidthFor(focusedFieldStyle, innerRight))
 	m.confirmInput.Width = 12
+	for i := range m.bulkAuthorInputs {
+		m.bulkAuthorInputs[i].Width = maxInt(4, contentWidthFor(blurredFieldStyle, innerRight))
+	}
+}
+
+func (m *tuiModel) openBulkAuthor() {
+	m.blurForm()
+	m.searchInput.Blur()
+	m.pathInput.Blur()
+	m.confirmInput.Blur()
+	for i := range m.bulkAuthorInputs {
+		m.bulkAuthorInputs[i].SetValue("")
+	}
+	m.bulkAuthorExact = false
+	m.overlay = overlayBulkAuthor
+	m.focusBulkAuthorField(bulkAuthorSearch)
+	m.setStatus("Enter an author search and replacement identity.", statusInfo)
+}
+
+func (m *tuiModel) focusBulkAuthorField(index int) {
+	m.blurBulkAuthorInputs()
+	m.bulkAuthorFocus = clamp(index, 0, bulkAuthorFieldCount-1)
+	m.bulkAuthorInputs[m.bulkAuthorFocus].Focus()
+	m.bulkAuthorInputs[m.bulkAuthorFocus].CursorEnd()
+}
+
+func (m *tuiModel) blurBulkAuthorInputs() {
+	for i := range m.bulkAuthorInputs {
+		m.bulkAuthorInputs[i].Blur()
+	}
 }
 
 func (m *tuiModel) focusPathInput() {
@@ -1097,6 +1233,50 @@ func cloneCommitRecord(commit CommitRecord) CommitRecord {
 	return clone
 }
 
+func stageAuthorReplacement(commits []CommitRecord, draftByHash map[string]CommitRecord, query string, replacementName string, replacementEmail string, exact bool) (int, error) {
+	query = strings.TrimSpace(query)
+	replacementName = strings.TrimSpace(replacementName)
+	replacementEmail = strings.TrimSpace(replacementEmail)
+	if query == "" {
+		return 0, errors.New("author search is required")
+	}
+	if replacementName == "" {
+		return 0, errors.New("replacement author name is required")
+	}
+	if replacementEmail == "" {
+		return 0, errors.New("replacement author email is required")
+	}
+	matched := 0
+	for _, commit := range commits {
+		draft, ok := draftByHash[commit.Hash]
+		if !ok {
+			draft = cloneCommitRecord(commit)
+		}
+		nameMatches := strings.EqualFold(draft.AuthorName, query)
+		emailMatches := strings.EqualFold(draft.AuthorEmail, query)
+		if !exact {
+			lowerQuery := strings.ToLower(query)
+			nameMatches = strings.Contains(strings.ToLower(draft.AuthorName), lowerQuery)
+			emailMatches = strings.Contains(strings.ToLower(draft.AuthorEmail), lowerQuery)
+		}
+		if !nameMatches && !emailMatches {
+			continue
+		}
+		draft.AuthorName = replacementName
+		draft.AuthorEmail = replacementEmail
+		draftByHash[commit.Hash] = draft
+		matched++
+	}
+	return matched, nil
+}
+
+func authorMatchMode(exact bool) string {
+	if exact {
+		return "Exact"
+	}
+	return "Partial"
+}
+
 func selectionAfterFilter(commits []CommitRecord, draftByHash map[string]CommitRecord, selectedHash string, query string) ([]CommitRecord, int, string) {
 	filtered := filterCommits(commits, draftByHash, query)
 	if len(filtered) == 0 {

tui_test.go

@@ -6,6 +6,7 @@ import (
 	"strings"
 	"testing"
 
+	tea "github.com/charmbracelet/bubbletea"
 	"github.com/charmbracelet/lipgloss"
 )
 
@@ -37,6 +38,88 @@ func TestDirtyCommitCount(t *testing.T) {
 	}
 }
 
+func TestStageAuthorReplacementMatchesPartialIdentityCaseInsensitively(t *testing.T) {
+	commits := []CommitRecord{
+		{Hash: "one", AuthorName: "Foo Bar", AuthorEmail: "foo@bar.baz", CommitterName: "Release Bot", CommitterEmail: "bot@example.com"},
+		{Hash: "two", AuthorName: "Someone Else", AuthorEmail: "FOO@EXAMPLE.COM", CommitterName: "Other Bot", CommitterEmail: "other@example.com"},
+		{Hash: "three", AuthorName: "Unaffected", AuthorEmail: "unaffected@example.com", CommitterName: "Keep Me", CommitterEmail: "keep@example.com"},
+	}
+	drafts := cloneMapByHash(commits)
+
+	matched, err := stageAuthorReplacement(commits, drafts, "fOo", "New Author", "new@example.com", false)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if matched != 2 {
+		t.Fatalf("expected two matching commits, got %d", matched)
+	}
+	if got := drafts["one"]; got.AuthorName != "New Author" || got.AuthorEmail != "new@example.com" {
+		t.Fatalf("expected first author identity to be replaced, got %#v", got)
+	} else if got.CommitterName != "Release Bot" || got.CommitterEmail != "bot@example.com" {
+		t.Fatalf("expected first committer identity to be preserved, got %#v", got)
+	}
+	if got := drafts["two"]; got.AuthorName != "New Author" || got.AuthorEmail != "new@example.com" {
+		t.Fatalf("expected second author identity to be replaced, got %#v", got)
+	} else if got.CommitterName != "Other Bot" || got.CommitterEmail != "other@example.com" {
+		t.Fatalf("expected second committer identity to be preserved, got %#v", got)
+	}
+	if got := drafts["three"]; got.AuthorName != "Unaffected" || got.AuthorEmail != "unaffected@example.com" {
+		t.Fatalf("expected non-matching author identity to be preserved, got %#v", got)
+	}
+}
+
+func TestStageAuthorReplacementExactModeRequiresWholeFieldMatch(t *testing.T) {
+	commits := []CommitRecord{
+		{Hash: "partial", AuthorName: "Foo Bar", AuthorEmail: "foo@bar.baz"},
+		{Hash: "exact", AuthorName: "FOO", AuthorEmail: "someone@example.com"},
+	}
+	drafts := cloneMapByHash(commits)
+
+	matched, err := stageAuthorReplacement(commits, drafts, "foo", "New Author", "new@example.com", true)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if matched != 1 {
+		t.Fatalf("expected one exact match, got %d", matched)
+	}
+	if got := drafts["partial"]; got.AuthorName != "Foo Bar" || got.AuthorEmail != "foo@bar.baz" {
+		t.Fatalf("expected partial match to remain unchanged in exact mode, got %#v", got)
+	}
+	if got := drafts["exact"]; got.AuthorName != "New Author" || got.AuthorEmail != "new@example.com" {
+		t.Fatalf("expected exact match to be replaced, got %#v", got)
+	}
+}
+
+func TestStageAuthorReplacementRejectsBlankInputsWithoutChangingDrafts(t *testing.T) {
+	commits := []CommitRecord{{Hash: "one", AuthorName: "Foo Bar", AuthorEmail: "foo@bar.baz"}}
+	tests := []struct {
+		name             string
+		query            string
+		replacementName  string
+		replacementEmail string
+	}{
+		{name: "search", query: "  ", replacementName: "New Author", replacementEmail: "new@example.com"},
+		{name: "author name", query: "Foo", replacementName: "  ", replacementEmail: "new@example.com"},
+		{name: "author email", query: "Foo", replacementName: "New Author", replacementEmail: "  "},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			drafts := cloneMapByHash(commits)
+			matched, err := stageAuthorReplacement(commits, drafts, tt.query, tt.replacementName, tt.replacementEmail, false)
+			if err == nil {
+				t.Fatal("expected blank input to be rejected")
+			}
+			if matched != 0 {
+				t.Fatalf("expected no matches on validation failure, got %d", matched)
+			}
+			if got := drafts["one"]; got.AuthorName != "Foo Bar" || got.AuthorEmail != "foo@bar.baz" {
+				t.Fatalf("expected drafts to remain unchanged on validation failure, got %#v", got)
+			}
+		})
+	}
+}
+
 func TestSelectionAfterFilterPreservesSelectedCommit(t *testing.T) {
 	commits := []CommitRecord{
 		{Hash: "one", ShortHash: "one", AuthorName: "A", Message: "alpha"},
@@ -113,6 +196,62 @@ func TestRepositoryLoadErrorOpensPathEntryState(t *testing.T) {
 	}
 }
 
+func TestBulkAuthorKeyOpensReplacementDialogInPartialMode(t *testing.T) {
+	model := newTUIModel(NewApp(), "/tmp/repo")
+	model.width = 100
+	model.height = 30
+	model.handleRepoLoaded(repoLoadedMsg{
+		repo: RepositoryState{Path: "/tmp/repo", Clean: true, CurrentBranch: "main"},
+		commits: []CommitRecord{
+			{Hash: "one", ShortHash: "one", AuthorName: "Foo Bar", AuthorEmail: "foo@bar.baz", Message: "first"},
+		},
+	})
+
+	updated, _ := model.handleKey(tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune{'b'}})
+	view := updated.(tuiModel).View()
+	if !strings.Contains(view, "Bulk replace author") {
+		t.Fatalf("expected bulk author dialog after pressing b, got:\n%s", view)
+	}
+	if !strings.Contains(view, "Match mode: Partial") {
+		t.Fatalf("expected partial match mode by default, got:\n%s", view)
+	}
+}
+
+func TestBulkAuthorDialogStagesExactAuthorReplacement(t *testing.T) {
+	model := newTUIModel(NewApp(), "/tmp/repo")
+	model.handleRepoLoaded(repoLoadedMsg{
+		repo: RepositoryState{Path: "/tmp/repo", Clean: true, CurrentBranch: "main"},
+		commits: []CommitRecord{
+			{Hash: "partial", ShortHash: "partial", AuthorName: "Foo Bar", AuthorEmail: "foo@bar.baz", Message: "partial"},
+			{Hash: "exact", ShortHash: "exact", AuthorName: "FOO", AuthorEmail: "someone@example.com", Message: "exact"},
+		},
+	})
+	send := func(msg tea.KeyMsg) {
+		t.Helper()
+		updated, _ := model.handleKey(msg)
+		model = updated.(tuiModel)
+	}
+
+	send(tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune{'b'}})
+	send(tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune("foo")})
+	send(tea.KeyMsg{Type: tea.KeyTab})
+	send(tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune("New Author")})
+	send(tea.KeyMsg{Type: tea.KeyTab})
+	send(tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune("new@example.com")})
+	send(tea.KeyMsg{Type: tea.KeyCtrlT})
+	send(tea.KeyMsg{Type: tea.KeyEnter})
+
+	if got := model.draftByHash["partial"]; got.AuthorName != "Foo Bar" || got.AuthorEmail != "foo@bar.baz" {
+		t.Fatalf("expected partial-only match to remain unchanged in exact mode, got %#v", got)
+	}
+	if got := model.draftByHash["exact"]; got.AuthorName != "New Author" || got.AuthorEmail != "new@example.com" {
+		t.Fatalf("expected exact match to be staged through the dialog, got %#v", got)
+	}
+	if model.overlay != overlayNone {
+		t.Fatalf("expected successful replacement to close the dialog, got overlay %v", model.overlay)
+	}
+}
+
 func TestViewFitsTerminalDimensions(t *testing.T) {
 	model := newTUIModel(NewApp(), "/tmp/repo")
 	model.width = 80