1package editor
2
3import (
4 "context"
5 "fmt"
6 "math/rand"
7 "net/http"
8 "os"
9 "os/exec"
10 "path/filepath"
11 "runtime"
12 "slices"
13 "strings"
14 "unicode"
15
16 "github.com/charmbracelet/bubbles/v2/key"
17 "github.com/charmbracelet/bubbles/v2/textarea"
18 tea "github.com/charmbracelet/bubbletea/v2"
19 "github.com/charmbracelet/crush/internal/app"
20 "github.com/charmbracelet/crush/internal/fsext"
21 "github.com/charmbracelet/crush/internal/message"
22 "github.com/charmbracelet/crush/internal/session"
23 "github.com/charmbracelet/crush/internal/tui/components/chat"
24 "github.com/charmbracelet/crush/internal/tui/components/completions"
25 "github.com/charmbracelet/crush/internal/tui/components/core/layout"
26 "github.com/charmbracelet/crush/internal/tui/components/dialogs"
27 "github.com/charmbracelet/crush/internal/tui/components/dialogs/commands"
28 "github.com/charmbracelet/crush/internal/tui/components/dialogs/filepicker"
29 "github.com/charmbracelet/crush/internal/tui/components/dialogs/quit"
30 "github.com/charmbracelet/crush/internal/tui/styles"
31 "github.com/charmbracelet/crush/internal/tui/util"
32 "github.com/charmbracelet/lipgloss/v2"
33)
34
35type Editor interface {
36 util.Model
37 layout.Sizeable
38 layout.Focusable
39 layout.Help
40 layout.Positional
41
42 SetSession(session session.Session) tea.Cmd
43 IsCompletionsOpen() bool
44 HasAttachments() bool
45 Cursor() *tea.Cursor
46}
47
48type FileCompletionItem struct {
49 Path string // The file path
50}
51
52type editorCmp struct {
53 width int
54 height int
55 x, y int
56 app *app.App
57 session session.Session
58 textarea *textarea.Model
59 attachments []message.Attachment
60 deleteMode bool
61 readyPlaceholder string
62 workingPlaceholder string
63
64 keyMap EditorKeyMap
65
66 // File path completions
67 currentQuery string
68 completionsStartIndex int
69 isCompletionsOpen bool
70}
71
72var DeleteKeyMaps = DeleteAttachmentKeyMaps{
73 AttachmentDeleteMode: key.NewBinding(
74 key.WithKeys("ctrl+r"),
75 key.WithHelp("ctrl+r+{i}", "delete attachment at index i"),
76 ),
77 Escape: key.NewBinding(
78 key.WithKeys("esc", "alt+esc"),
79 key.WithHelp("esc", "cancel delete mode"),
80 ),
81 DeleteAllAttachments: key.NewBinding(
82 key.WithKeys("r"),
83 key.WithHelp("ctrl+r+r", "delete all attachments"),
84 ),
85}
86
87const (
88 maxAttachments = 5
89 maxFileResults = 25
90)
91
92type OpenEditorMsg struct {
93 Text string
94}
95
96func (m *editorCmp) openEditor(value string) tea.Cmd {
97 editor := os.Getenv("EDITOR")
98 if editor == "" {
99 // Use platform-appropriate default editor
100 if runtime.GOOS == "windows" {
101 editor = "notepad"
102 } else {
103 editor = "nvim"
104 }
105 }
106
107 tmpfile, err := os.CreateTemp("", "msg_*.md")
108 if err != nil {
109 return util.ReportError(err)
110 }
111 defer tmpfile.Close() //nolint:errcheck
112 if _, err := tmpfile.WriteString(value); err != nil {
113 return util.ReportError(err)
114 }
115 c := exec.CommandContext(context.TODO(), editor, tmpfile.Name())
116 c.Stdin = os.Stdin
117 c.Stdout = os.Stdout
118 c.Stderr = os.Stderr
119 return tea.ExecProcess(c, func(err error) tea.Msg {
120 if err != nil {
121 return util.ReportError(err)
122 }
123 content, err := os.ReadFile(tmpfile.Name())
124 if err != nil {
125 return util.ReportError(err)
126 }
127 if len(content) == 0 {
128 return util.ReportWarn("Message is empty")
129 }
130 os.Remove(tmpfile.Name())
131 return OpenEditorMsg{
132 Text: strings.TrimSpace(string(content)),
133 }
134 })
135}
136
137func (m *editorCmp) Init() tea.Cmd {
138 return nil
139}
140
141func (m *editorCmp) send() tea.Cmd {
142 value := m.textarea.Value()
143 value = strings.TrimSpace(value)
144
145 switch value {
146 case "exit", "quit":
147 m.textarea.Reset()
148 return util.CmdHandler(dialogs.OpenDialogMsg{Model: quit.NewQuitDialog()})
149 }
150
151 m.textarea.Reset()
152 attachments := m.attachments
153
154 m.attachments = nil
155 if value == "" {
156 return nil
157 }
158
159 // Change the placeholder when sending a new message.
160 m.randomizePlaceholders()
161
162 return tea.Batch(
163 util.CmdHandler(chat.SendMsg{
164 Text: value,
165 Attachments: attachments,
166 }),
167 )
168}
169
170func (m *editorCmp) repositionCompletions() tea.Msg {
171 x, y := m.completionsPosition()
172 return completions.RepositionCompletionsMsg{X: x, Y: y}
173}
174
175func (m *editorCmp) Update(msg tea.Msg) (util.Model, tea.Cmd) {
176 var cmd tea.Cmd
177 var cmds []tea.Cmd
178 switch msg := msg.(type) {
179 case tea.WindowSizeMsg:
180 return m, m.repositionCompletions
181 case filepicker.FilePickedMsg:
182 if len(m.attachments) >= maxAttachments {
183 return m, util.ReportError(fmt.Errorf("cannot add more than %d images", maxAttachments))
184 }
185 m.attachments = append(m.attachments, msg.Attachment)
186 return m, nil
187 case completions.CompletionsOpenedMsg:
188 m.isCompletionsOpen = true
189 case completions.CompletionsClosedMsg:
190 m.isCompletionsOpen = false
191 m.currentQuery = ""
192 m.completionsStartIndex = 0
193 case completions.SelectCompletionMsg:
194 if !m.isCompletionsOpen {
195 return m, nil
196 }
197 if item, ok := msg.Value.(FileCompletionItem); ok {
198 word := m.textarea.Word()
199 // If the selected item is a file, insert its path into the textarea
200 value := m.textarea.Value()
201 value = value[:m.completionsStartIndex] + // Remove the current query
202 item.Path + // Insert the file path
203 value[m.completionsStartIndex+len(word):] // Append the rest of the value
204 // XXX: This will always move the cursor to the end of the textarea.
205 m.textarea.SetValue(value)
206 m.textarea.MoveToEnd()
207 if !msg.Insert {
208 m.isCompletionsOpen = false
209 m.currentQuery = ""
210 m.completionsStartIndex = 0
211 }
212 }
213
214 case commands.OpenExternalEditorMsg:
215 if m.app.AgentCoordinator.IsSessionBusy(m.session.ID) {
216 return m, util.ReportWarn("Agent is working, please wait...")
217 }
218 return m, m.openEditor(m.textarea.Value())
219 case OpenEditorMsg:
220 m.textarea.SetValue(msg.Text)
221 m.textarea.MoveToEnd()
222 case tea.PasteMsg:
223 path := strings.ReplaceAll(string(msg), "\\ ", " ")
224 // try to get an image
225 path, err := filepath.Abs(strings.TrimSpace(path))
226 if err != nil {
227 m.textarea, cmd = m.textarea.Update(msg)
228 return m, cmd
229 }
230 isAllowedType := false
231 for _, ext := range filepicker.AllowedTypes {
232 if strings.HasSuffix(path, ext) {
233 isAllowedType = true
234 break
235 }
236 }
237 if !isAllowedType {
238 m.textarea, cmd = m.textarea.Update(msg)
239 return m, cmd
240 }
241 tooBig, _ := filepicker.IsFileTooBig(path, filepicker.MaxAttachmentSize)
242 if tooBig {
243 m.textarea, cmd = m.textarea.Update(msg)
244 return m, cmd
245 }
246
247 content, err := os.ReadFile(path)
248 if err != nil {
249 m.textarea, cmd = m.textarea.Update(msg)
250 return m, cmd
251 }
252 mimeBufferSize := min(512, len(content))
253 mimeType := http.DetectContentType(content[:mimeBufferSize])
254 fileName := filepath.Base(path)
255 attachment := message.Attachment{FilePath: path, FileName: fileName, MimeType: mimeType, Content: content}
256 return m, util.CmdHandler(filepicker.FilePickedMsg{
257 Attachment: attachment,
258 })
259
260 case commands.ToggleYoloModeMsg:
261 m.setEditorPrompt()
262 return m, nil
263 case tea.KeyPressMsg:
264 cur := m.textarea.Cursor()
265 curIdx := m.textarea.Width()*cur.Y + cur.X
266 switch {
267 // Open command palette when "/" is pressed on empty prompt
268 case msg.String() == "/" && len(strings.TrimSpace(m.textarea.Value())) == 0:
269 return m, util.CmdHandler(dialogs.OpenDialogMsg{
270 Model: commands.NewCommandDialog(m.session.ID),
271 })
272 // Completions
273 case msg.String() == "@" && !m.isCompletionsOpen &&
274 // only show if beginning of prompt, or if previous char is a space or newline:
275 (len(m.textarea.Value()) == 0 || unicode.IsSpace(rune(m.textarea.Value()[len(m.textarea.Value())-1]))):
276 m.isCompletionsOpen = true
277 m.currentQuery = ""
278 m.completionsStartIndex = curIdx
279 cmds = append(cmds, m.startCompletions)
280 case m.isCompletionsOpen && curIdx <= m.completionsStartIndex:
281 cmds = append(cmds, util.CmdHandler(completions.CloseCompletionsMsg{}))
282 }
283 if key.Matches(msg, DeleteKeyMaps.AttachmentDeleteMode) {
284 m.deleteMode = true
285 return m, nil
286 }
287 if key.Matches(msg, DeleteKeyMaps.DeleteAllAttachments) && m.deleteMode {
288 m.deleteMode = false
289 m.attachments = nil
290 return m, nil
291 }
292 rune := msg.Code
293 if m.deleteMode && unicode.IsDigit(rune) {
294 num := int(rune - '0')
295 m.deleteMode = false
296 if num < 10 && len(m.attachments) > num {
297 if num == 0 {
298 m.attachments = m.attachments[num+1:]
299 } else {
300 m.attachments = slices.Delete(m.attachments, num, num+1)
301 }
302 return m, nil
303 }
304 }
305 if key.Matches(msg, m.keyMap.OpenEditor) {
306 if m.app.AgentCoordinator.IsSessionBusy(m.session.ID) {
307 return m, util.ReportWarn("Agent is working, please wait...")
308 }
309 return m, m.openEditor(m.textarea.Value())
310 }
311 if key.Matches(msg, DeleteKeyMaps.Escape) {
312 m.deleteMode = false
313 return m, nil
314 }
315 if key.Matches(msg, m.keyMap.Newline) {
316 m.textarea.InsertRune('\n')
317 cmds = append(cmds, util.CmdHandler(completions.CloseCompletionsMsg{}))
318 }
319 // Handle Enter key
320 if m.textarea.Focused() && key.Matches(msg, m.keyMap.SendMessage) {
321 value := m.textarea.Value()
322 if strings.HasSuffix(value, "\\") {
323 // If the last character is a backslash, remove it and add a newline.
324 m.textarea.SetValue(strings.TrimSuffix(value, "\\"))
325 } else {
326 // Otherwise, send the message
327 return m, m.send()
328 }
329 }
330 }
331
332 m.textarea, cmd = m.textarea.Update(msg)
333 cmds = append(cmds, cmd)
334
335 if m.textarea.Focused() {
336 kp, ok := msg.(tea.KeyPressMsg)
337 if ok {
338 if kp.String() == "space" || m.textarea.Value() == "" {
339 m.isCompletionsOpen = false
340 m.currentQuery = ""
341 m.completionsStartIndex = 0
342 cmds = append(cmds, util.CmdHandler(completions.CloseCompletionsMsg{}))
343 } else {
344 word := m.textarea.Word()
345 if strings.HasPrefix(word, "@") {
346 // XXX: wont' work if editing in the middle of the field.
347 m.completionsStartIndex = strings.LastIndex(m.textarea.Value(), word)
348 m.currentQuery = word[1:]
349 x, y := m.completionsPosition()
350 x -= len(m.currentQuery)
351 m.isCompletionsOpen = true
352 cmds = append(cmds,
353 util.CmdHandler(completions.FilterCompletionsMsg{
354 Query: m.currentQuery,
355 Reopen: m.isCompletionsOpen,
356 X: x,
357 Y: y,
358 }),
359 )
360 } else if m.isCompletionsOpen {
361 m.isCompletionsOpen = false
362 m.currentQuery = ""
363 m.completionsStartIndex = 0
364 cmds = append(cmds, util.CmdHandler(completions.CloseCompletionsMsg{}))
365 }
366 }
367 }
368 }
369
370 return m, tea.Batch(cmds...)
371}
372
373func (m *editorCmp) setEditorPrompt() {
374 if m.app.Permissions.SkipRequests() {
375 m.textarea.SetPromptFunc(4, yoloPromptFunc)
376 return
377 }
378 m.textarea.SetPromptFunc(4, normalPromptFunc)
379}
380
381func (m *editorCmp) completionsPosition() (int, int) {
382 cur := m.textarea.Cursor()
383 if cur == nil {
384 return m.x, m.y + 1 // adjust for padding
385 }
386 x := cur.X + m.x
387 y := cur.Y + m.y + 1 // adjust for padding
388 return x, y
389}
390
391func (m *editorCmp) Cursor() *tea.Cursor {
392 cursor := m.textarea.Cursor()
393 if cursor != nil {
394 cursor.X = cursor.X + m.x + 1
395 cursor.Y = cursor.Y + m.y + 1 // adjust for padding
396 }
397 return cursor
398}
399
400var readyPlaceholders = [...]string{
401 "Ready!",
402 "Ready...",
403 "Ready?",
404 "Ready for instructions",
405}
406
407var workingPlaceholders = [...]string{
408 "Working!",
409 "Working...",
410 "Brrrrr...",
411 "Prrrrrrrr...",
412 "Processing...",
413 "Thinking...",
414}
415
416func (m *editorCmp) randomizePlaceholders() {
417 m.workingPlaceholder = workingPlaceholders[rand.Intn(len(workingPlaceholders))]
418 m.readyPlaceholder = readyPlaceholders[rand.Intn(len(readyPlaceholders))]
419}
420
421func (m *editorCmp) View() string {
422 t := styles.CurrentTheme()
423 // Update placeholder
424 if m.app.AgentCoordinator != nil && m.app.AgentCoordinator.IsBusy() {
425 m.textarea.Placeholder = m.workingPlaceholder
426 } else {
427 m.textarea.Placeholder = m.readyPlaceholder
428 }
429 if m.app.Permissions.SkipRequests() {
430 m.textarea.Placeholder = "Yolo mode!"
431 }
432 if len(m.attachments) == 0 {
433 content := t.S().Base.Padding(1).Render(
434 m.textarea.View(),
435 )
436 return content
437 }
438 content := t.S().Base.Padding(0, 1, 1, 1).Render(
439 lipgloss.JoinVertical(lipgloss.Top,
440 m.attachmentsContent(),
441 m.textarea.View(),
442 ),
443 )
444 return content
445}
446
447func (m *editorCmp) SetSize(width, height int) tea.Cmd {
448 m.width = width
449 m.height = height
450 m.textarea.SetWidth(width - 2) // adjust for padding
451 m.textarea.SetHeight(height - 2) // adjust for padding
452 return nil
453}
454
455func (m *editorCmp) GetSize() (int, int) {
456 return m.textarea.Width(), m.textarea.Height()
457}
458
459func (m *editorCmp) attachmentsContent() string {
460 var styledAttachments []string
461 t := styles.CurrentTheme()
462 attachmentStyles := t.S().Base.
463 MarginLeft(1).
464 Background(t.FgMuted).
465 Foreground(t.FgBase)
466 for i, attachment := range m.attachments {
467 var filename string
468 if len(attachment.FileName) > 10 {
469 filename = fmt.Sprintf(" %s %s...", styles.DocumentIcon, attachment.FileName[0:7])
470 } else {
471 filename = fmt.Sprintf(" %s %s", styles.DocumentIcon, attachment.FileName)
472 }
473 if m.deleteMode {
474 filename = fmt.Sprintf("%d%s", i, filename)
475 }
476 styledAttachments = append(styledAttachments, attachmentStyles.Render(filename))
477 }
478 content := lipgloss.JoinHorizontal(lipgloss.Left, styledAttachments...)
479 return content
480}
481
482func (m *editorCmp) SetPosition(x, y int) tea.Cmd {
483 m.x = x
484 m.y = y
485 return nil
486}
487
488func (m *editorCmp) startCompletions() tea.Msg {
489 ls := m.app.Config().Options.TUI.Completions
490 depth, limit := ls.Limits()
491 files, _, _ := fsext.ListDirectory(".", nil, depth, limit)
492 slices.Sort(files)
493 completionItems := make([]completions.Completion, 0, len(files))
494 for _, file := range files {
495 file = strings.TrimPrefix(file, "./")
496 completionItems = append(completionItems, completions.Completion{
497 Title: file,
498 Value: FileCompletionItem{
499 Path: file,
500 },
501 })
502 }
503
504 x, y := m.completionsPosition()
505 return completions.OpenCompletionsMsg{
506 Completions: completionItems,
507 X: x,
508 Y: y,
509 MaxResults: maxFileResults,
510 }
511}
512
513// Blur implements Container.
514func (c *editorCmp) Blur() tea.Cmd {
515 c.textarea.Blur()
516 return nil
517}
518
519// Focus implements Container.
520func (c *editorCmp) Focus() tea.Cmd {
521 return c.textarea.Focus()
522}
523
524// IsFocused implements Container.
525func (c *editorCmp) IsFocused() bool {
526 return c.textarea.Focused()
527}
528
529// Bindings implements Container.
530func (c *editorCmp) Bindings() []key.Binding {
531 return c.keyMap.KeyBindings()
532}
533
534// TODO: most likely we do not need to have the session here
535// we need to move some functionality to the page level
536func (c *editorCmp) SetSession(session session.Session) tea.Cmd {
537 c.session = session
538 return nil
539}
540
541func (c *editorCmp) IsCompletionsOpen() bool {
542 return c.isCompletionsOpen
543}
544
545func (c *editorCmp) HasAttachments() bool {
546 return len(c.attachments) > 0
547}
548
549func normalPromptFunc(info textarea.PromptInfo) string {
550 t := styles.CurrentTheme()
551 if info.LineNumber == 0 {
552 return " > "
553 }
554 if info.Focused {
555 return t.S().Base.Foreground(t.GreenDark).Render("::: ")
556 }
557 return t.S().Muted.Render("::: ")
558}
559
560func yoloPromptFunc(info textarea.PromptInfo) string {
561 t := styles.CurrentTheme()
562 if info.LineNumber == 0 {
563 if info.Focused {
564 return fmt.Sprintf("%s ", t.YoloIconFocused)
565 } else {
566 return fmt.Sprintf("%s ", t.YoloIconBlurred)
567 }
568 }
569 if info.Focused {
570 return fmt.Sprintf("%s ", t.YoloDotsFocused)
571 }
572 return fmt.Sprintf("%s ", t.YoloDotsBlurred)
573}
574
575func New(app *app.App) Editor {
576 t := styles.CurrentTheme()
577 ta := textarea.New()
578 ta.SetStyles(t.S().TextArea)
579 ta.ShowLineNumbers = false
580 ta.CharLimit = -1
581 ta.SetVirtualCursor(false)
582 ta.Focus()
583 e := &editorCmp{
584 // TODO: remove the app instance from here
585 app: app,
586 textarea: ta,
587 keyMap: DefaultEditorKeyMap(),
588 }
589 e.setEditorPrompt()
590
591 e.randomizePlaceholders()
592 e.textarea.Placeholder = e.readyPlaceholder
593
594 return e
595}