1package editor
2
3import (
4 "fmt"
5 "os"
6 "os/exec"
7 "runtime"
8 "slices"
9 "strings"
10 "unicode"
11
12 "github.com/charmbracelet/bubbles/v2/key"
13 "github.com/charmbracelet/bubbles/v2/textarea"
14 tea "github.com/charmbracelet/bubbletea/v2"
15 "github.com/charmbracelet/crush/internal/app"
16 "github.com/charmbracelet/crush/internal/fsext"
17 "github.com/charmbracelet/crush/internal/message"
18 "github.com/charmbracelet/crush/internal/session"
19 "github.com/charmbracelet/crush/internal/tui/components/chat"
20 "github.com/charmbracelet/crush/internal/tui/components/completions"
21 "github.com/charmbracelet/crush/internal/tui/components/core/layout"
22 "github.com/charmbracelet/crush/internal/tui/components/dialogs"
23 "github.com/charmbracelet/crush/internal/tui/components/dialogs/filepicker"
24 "github.com/charmbracelet/crush/internal/tui/components/dialogs/quit"
25 "github.com/charmbracelet/crush/internal/tui/styles"
26 "github.com/charmbracelet/crush/internal/tui/util"
27 "github.com/charmbracelet/lipgloss/v2"
28)
29
30type Editor interface {
31 util.Model
32 layout.Sizeable
33 layout.Focusable
34 layout.Help
35 layout.Positional
36
37 SetSession(session session.Session) tea.Cmd
38 IsCompletionsOpen() bool
39 Cursor() *tea.Cursor
40 SendMessage() tea.Cmd
41}
42
43type FileCompletionItem struct {
44 Path string // The file path
45}
46
47type editorCmp struct {
48 width int
49 height int
50 x, y int
51 app *app.App
52 session session.Session
53 textarea textarea.Model
54 attachments []message.Attachment
55 deleteMode bool
56
57 keyMap EditorKeyMap
58
59 // File path completions
60 currentQuery string
61 completionsStartIndex int
62 isCompletionsOpen bool
63}
64
65var DeleteKeyMaps = DeleteAttachmentKeyMaps{
66 AttachmentDeleteMode: key.NewBinding(
67 key.WithKeys("ctrl+r"),
68 key.WithHelp("ctrl+r+{i}", "delete attachment at index i"),
69 ),
70 Escape: key.NewBinding(
71 key.WithKeys("esc"),
72 key.WithHelp("esc", "cancel delete mode"),
73 ),
74 DeleteAllAttachments: key.NewBinding(
75 key.WithKeys("r"),
76 key.WithHelp("ctrl+r+r", "delete all attachments"),
77 ),
78}
79
80const (
81 maxAttachments = 5
82)
83
84type openEditorMsg struct {
85 Text string
86}
87
88func (m *editorCmp) openEditor(value string) tea.Cmd {
89 editor := os.Getenv("EDITOR")
90 if editor == "" {
91 // Use platform-appropriate default editor
92 if runtime.GOOS == "windows" {
93 editor = "notepad"
94 } else {
95 editor = "nvim"
96 }
97 }
98
99 tmpfile, err := os.CreateTemp("", "msg_*.md")
100 if err != nil {
101 return util.ReportError(err)
102 }
103 defer tmpfile.Close() //nolint:errcheck
104 if _, err := tmpfile.WriteString(value); err != nil {
105 return util.ReportError(err)
106 }
107 c := exec.Command(editor, tmpfile.Name())
108 c.Stdin = os.Stdin
109 c.Stdout = os.Stdout
110 c.Stderr = os.Stderr
111 return tea.ExecProcess(c, func(err error) tea.Msg {
112 if err != nil {
113 return util.ReportError(err)
114 }
115 content, err := os.ReadFile(tmpfile.Name())
116 if err != nil {
117 return util.ReportError(err)
118 }
119 if len(content) == 0 {
120 return util.ReportWarn("Message is empty")
121 }
122 os.Remove(tmpfile.Name())
123 return openEditorMsg{
124 Text: strings.TrimSpace(string(content)),
125 }
126 })
127}
128
129func (m *editorCmp) Init() tea.Cmd {
130 return nil
131}
132
133func (m *editorCmp) send() tea.Cmd {
134 if m.app.CoderAgent == nil {
135 return util.ReportError(fmt.Errorf("coder agent is not initialized"))
136 }
137 if m.app.CoderAgent.IsSessionBusy(m.session.ID) {
138 return util.ReportWarn("Agent is working, please wait...")
139 }
140
141 value := m.textarea.Value()
142 value = strings.TrimSpace(value)
143
144 switch value {
145 case "exit", "quit":
146 m.textarea.Reset()
147 return util.CmdHandler(dialogs.OpenDialogMsg{Model: quit.NewQuitDialog()})
148 }
149
150 m.textarea.Reset()
151 attachments := m.attachments
152
153 m.attachments = nil
154 if value == "" {
155 return nil
156 }
157 return tea.Batch(
158 util.CmdHandler(chat.SendMsg{
159 Text: value,
160 Attachments: attachments,
161 }),
162 )
163}
164
165func (m *editorCmp) repositionCompletions() tea.Msg {
166 x, y := m.completionsPosition()
167 return completions.RepositionCompletionsMsg{X: x, Y: y}
168}
169
170func (m *editorCmp) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
171 var cmd tea.Cmd
172 var cmds []tea.Cmd
173 switch msg := msg.(type) {
174 case tea.WindowSizeMsg:
175 return m, m.repositionCompletions
176 case filepicker.FilePickedMsg:
177 if len(m.attachments) >= maxAttachments {
178 return m, util.ReportError(fmt.Errorf("cannot add more than %d images", maxAttachments))
179 }
180 m.attachments = append(m.attachments, msg.Attachment)
181 return m, nil
182 case completions.CompletionsOpenedMsg:
183 m.isCompletionsOpen = true
184 case completions.CompletionsClosedMsg:
185 m.isCompletionsOpen = false
186 m.currentQuery = ""
187 m.completionsStartIndex = 0
188 case completions.SelectCompletionMsg:
189 if !m.isCompletionsOpen {
190 return m, nil
191 }
192 if item, ok := msg.Value.(FileCompletionItem); ok {
193 word := m.textarea.Word()
194 // If the selected item is a file, insert its path into the textarea
195 value := m.textarea.Value()
196 value = value[:m.completionsStartIndex] + // Remove the current query
197 item.Path + // Insert the file path
198 value[m.completionsStartIndex+len(word):] // Append the rest of the value
199 // XXX: This will always move the cursor to the end of the textarea.
200 m.textarea.SetValue(value)
201 m.textarea.MoveToEnd()
202 if !msg.Insert {
203 m.isCompletionsOpen = false
204 m.currentQuery = ""
205 m.completionsStartIndex = 0
206 }
207 }
208 case openEditorMsg:
209 m.textarea.SetValue(msg.Text)
210 m.textarea.MoveToEnd()
211 case tea.KeyPressMsg:
212 cur := m.textarea.Cursor()
213 curIdx := m.textarea.Width()*cur.Y + cur.X
214 switch {
215 // Completions
216 case msg.String() == "/" && !m.isCompletionsOpen &&
217 // only show if beginning of prompt, or if previous char is a space or newline:
218 (len(m.textarea.Value()) == 0 || unicode.IsSpace(rune(m.textarea.Value()[len(m.textarea.Value())-1]))):
219 m.isCompletionsOpen = true
220 m.currentQuery = ""
221 m.completionsStartIndex = curIdx
222 cmds = append(cmds, m.startCompletions)
223 case m.isCompletionsOpen && curIdx <= m.completionsStartIndex:
224 cmds = append(cmds, util.CmdHandler(completions.CloseCompletionsMsg{}))
225 }
226 if key.Matches(msg, DeleteKeyMaps.AttachmentDeleteMode) {
227 m.deleteMode = true
228 return m, nil
229 }
230 if key.Matches(msg, DeleteKeyMaps.DeleteAllAttachments) && m.deleteMode {
231 m.deleteMode = false
232 m.attachments = nil
233 return m, nil
234 }
235 rune := msg.Code
236 if m.deleteMode && unicode.IsDigit(rune) {
237 num := int(rune - '0')
238 m.deleteMode = false
239 if num < 10 && len(m.attachments) > num {
240 if num == 0 {
241 m.attachments = m.attachments[num+1:]
242 } else {
243 m.attachments = slices.Delete(m.attachments, num, num+1)
244 }
245 return m, nil
246 }
247 }
248 if key.Matches(msg, m.keyMap.OpenEditor) {
249 if m.app.CoderAgent.IsSessionBusy(m.session.ID) {
250 return m, util.ReportWarn("Agent is working, please wait...")
251 }
252 return m, m.openEditor(m.textarea.Value())
253 }
254 if key.Matches(msg, DeleteKeyMaps.Escape) {
255 m.deleteMode = false
256 return m, nil
257 }
258 if key.Matches(msg, m.keyMap.Newline) {
259 m.textarea.InsertRune('\n')
260 cmds = append(cmds, util.CmdHandler(completions.CloseCompletionsMsg{}))
261 }
262 // Handle Enter key
263 if m.textarea.Focused() && key.Matches(msg, m.keyMap.SendMessage) {
264 value := m.textarea.Value()
265 if len(value) > 0 && value[len(value)-1] == '\\' {
266 // If the last character is a backslash, remove it and add a newline
267 m.textarea.SetValue(value[:len(value)-1])
268 } else {
269 // Otherwise, send the message
270 return m, m.send()
271 }
272 }
273 }
274
275 m.textarea, cmd = m.textarea.Update(msg)
276 cmds = append(cmds, cmd)
277
278 if m.textarea.Focused() {
279 kp, ok := msg.(tea.KeyPressMsg)
280 if ok {
281 if kp.String() == "space" || m.textarea.Value() == "" {
282 m.isCompletionsOpen = false
283 m.currentQuery = ""
284 m.completionsStartIndex = 0
285 cmds = append(cmds, util.CmdHandler(completions.CloseCompletionsMsg{}))
286 } else {
287 word := m.textarea.Word()
288 if strings.HasPrefix(word, "/") {
289 // XXX: wont' work if editing in the middle of the field.
290 m.completionsStartIndex = strings.LastIndex(m.textarea.Value(), word)
291 m.currentQuery = word[1:]
292 x, y := m.completionsPosition()
293 x -= len(m.currentQuery)
294 m.isCompletionsOpen = true
295 cmds = append(cmds,
296 util.CmdHandler(completions.FilterCompletionsMsg{
297 Query: m.currentQuery,
298 Reopen: m.isCompletionsOpen,
299 X: x,
300 Y: y,
301 }),
302 )
303 } else if m.isCompletionsOpen {
304 m.isCompletionsOpen = false
305 m.currentQuery = ""
306 m.completionsStartIndex = 0
307 cmds = append(cmds, util.CmdHandler(completions.CloseCompletionsMsg{}))
308 }
309 }
310 }
311 }
312
313 return m, tea.Batch(cmds...)
314}
315
316func (m *editorCmp) completionsPosition() (int, int) {
317 cur := m.textarea.Cursor()
318 if cur == nil {
319 return m.x, m.y + 1 // adjust for padding
320 }
321 x := cur.X + m.x
322 y := cur.Y + m.y + 1 // adjust for padding
323 return x, y
324}
325
326func (m *editorCmp) Cursor() *tea.Cursor {
327 cursor := m.textarea.Cursor()
328 if cursor != nil {
329 cursor.X = cursor.X + m.x + 1
330 cursor.Y = cursor.Y + m.y + 1 // adjust for padding
331 }
332 return cursor
333}
334
335func (m *editorCmp) View() string {
336 t := styles.CurrentTheme()
337 if len(m.attachments) == 0 {
338 content := t.S().Base.Padding(1).Render(
339 m.textarea.View(),
340 )
341 return content
342 }
343 content := t.S().Base.Padding(0, 1, 1, 1).Render(
344 lipgloss.JoinVertical(lipgloss.Top,
345 m.attachmentsContent(),
346 m.textarea.View(),
347 ),
348 )
349 return content
350}
351
352func (m *editorCmp) SetSize(width, height int) tea.Cmd {
353 m.width = width
354 m.height = height
355 m.textarea.SetWidth(width - 2) // adjust for padding
356 m.textarea.SetHeight(height - 2) // adjust for padding
357 return nil
358}
359
360func (m *editorCmp) GetSize() (int, int) {
361 return m.textarea.Width(), m.textarea.Height()
362}
363
364func (m *editorCmp) attachmentsContent() string {
365 var styledAttachments []string
366 t := styles.CurrentTheme()
367 attachmentStyles := t.S().Base.
368 MarginLeft(1).
369 Background(t.FgMuted).
370 Foreground(t.FgBase)
371 for i, attachment := range m.attachments {
372 var filename string
373 if len(attachment.FileName) > 10 {
374 filename = fmt.Sprintf(" %s %s...", styles.DocumentIcon, attachment.FileName[0:7])
375 } else {
376 filename = fmt.Sprintf(" %s %s", styles.DocumentIcon, attachment.FileName)
377 }
378 if m.deleteMode {
379 filename = fmt.Sprintf("%d%s", i, filename)
380 }
381 styledAttachments = append(styledAttachments, attachmentStyles.Render(filename))
382 }
383 content := lipgloss.JoinHorizontal(lipgloss.Left, styledAttachments...)
384 return content
385}
386
387func (m *editorCmp) SetPosition(x, y int) tea.Cmd {
388 m.x = x
389 m.y = y
390 return nil
391}
392
393func (m *editorCmp) startCompletions() tea.Msg {
394 files, _, _ := fsext.ListDirectory(".", []string{}, 0)
395 completionItems := make([]completions.Completion, 0, len(files))
396 for _, file := range files {
397 file = strings.TrimPrefix(file, "./")
398 completionItems = append(completionItems, completions.Completion{
399 Title: file,
400 Value: FileCompletionItem{
401 Path: file,
402 },
403 })
404 }
405
406 x, y := m.completionsPosition()
407 return completions.OpenCompletionsMsg{
408 Completions: completionItems,
409 X: x,
410 Y: y,
411 }
412}
413
414// Blur implements Container.
415func (c *editorCmp) Blur() tea.Cmd {
416 c.textarea.Blur()
417 return nil
418}
419
420// Focus implements Container.
421func (c *editorCmp) Focus() tea.Cmd {
422 return c.textarea.Focus()
423}
424
425// IsFocused implements Container.
426func (c *editorCmp) IsFocused() bool {
427 return c.textarea.Focused()
428}
429
430// Bindings implements Container.
431func (c *editorCmp) Bindings() []key.Binding {
432 return c.keyMap.KeyBindings()
433}
434
435// TODO: most likely we do not need to have the session here
436// we need to move some functionality to the page level
437func (c *editorCmp) SetSession(session session.Session) tea.Cmd {
438 c.session = session
439 return nil
440}
441
442func (c *editorCmp) IsCompletionsOpen() bool {
443 return c.isCompletionsOpen
444}
445
446func (c *editorCmp) SendMessage() tea.Cmd {
447 return c.send()
448}
449
450func New(app *app.App, initialPrompt string) Editor {
451 t := styles.CurrentTheme()
452 ta := textarea.New()
453 ta.SetStyles(t.S().TextArea)
454 ta.SetPromptFunc(4, func(info textarea.PromptInfo) string {
455 if info.LineNumber == 0 {
456 return " > "
457 }
458 if info.Focused {
459 return t.S().Base.Foreground(t.GreenDark).Render("::: ")
460 } else {
461 return t.S().Muted.Render("::: ")
462 }
463 })
464 ta.ShowLineNumbers = false
465 ta.CharLimit = -1
466 ta.Placeholder = "Tell me more about this project..."
467 ta.SetVirtualCursor(false)
468 ta.Focus()
469
470 // Set initial prompt if provided
471 if initialPrompt != "" {
472 ta.SetValue(initialPrompt)
473 ta.MoveToEnd()
474 }
475
476 return &editorCmp{
477 // TODO: remove the app instance from here
478 app: app,
479 textarea: ta,
480 keyMap: DefaultEditorKeyMap(),
481 }
482}