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/dialogs"
22 "github.com/charmbracelet/crush/internal/tui/components/dialogs/filepicker"
23 "github.com/charmbracelet/crush/internal/tui/components/dialogs/quit"
24 "github.com/charmbracelet/crush/internal/tui/styles"
25 "github.com/charmbracelet/crush/internal/tui/util"
26 "github.com/charmbracelet/lipgloss/v2"
27)
28
29type FileCompletionItem struct {
30 Path string // The file path
31}
32
33type editorCmp struct {
34 width int
35 height int
36 x, y int
37 app *app.App
38 session session.Session
39 textarea textarea.Model
40 attachments []message.Attachment
41 deleteMode bool
42
43 keyMap EditorKeyMap
44
45 // File path completions
46 currentQuery string
47 completionsStartIndex int
48 isCompletionsOpen bool
49}
50
51var DeleteKeyMaps = DeleteAttachmentKeyMaps{
52 AttachmentDeleteMode: key.NewBinding(
53 key.WithKeys("ctrl+r"),
54 key.WithHelp("ctrl+r+{i}", "delete attachment at index i"),
55 ),
56 Escape: key.NewBinding(
57 key.WithKeys("esc"),
58 key.WithHelp("esc", "cancel delete mode"),
59 ),
60 DeleteAllAttachments: key.NewBinding(
61 key.WithKeys("r"),
62 key.WithHelp("ctrl+r+r", "delete all attchments"),
63 ),
64}
65
66const (
67 maxAttachments = 5
68)
69
70func (m *editorCmp) openEditor(value string) tea.Cmd {
71 editor := os.Getenv("EDITOR")
72 if editor == "" {
73 // Use platform-appropriate default editor
74 if runtime.GOOS == "windows" {
75 editor = "notepad"
76 } else {
77 editor = "nvim"
78 }
79 }
80
81 tmpfile, err := os.CreateTemp("", "msg_*.md")
82 if err != nil {
83 return util.ReportError(err)
84 }
85 defer tmpfile.Close() //nolint:errcheck
86 if _, err := tmpfile.WriteString(value); err != nil {
87 return util.ReportError(err)
88 }
89 c := exec.Command(editor, tmpfile.Name())
90 c.Stdin = os.Stdin
91 c.Stdout = os.Stdout
92 c.Stderr = os.Stderr
93 return tea.ExecProcess(c, func(err error) tea.Msg {
94 if err != nil {
95 return util.ReportError(err)
96 }
97 content, err := os.ReadFile(tmpfile.Name())
98 if err != nil {
99 return util.ReportError(err)
100 }
101 if len(content) == 0 {
102 return util.ReportWarn("Message is empty")
103 }
104 os.Remove(tmpfile.Name())
105 attachments := m.attachments
106 m.attachments = nil
107 return chat.SendMsg{
108 Text: string(content),
109 Attachments: attachments,
110 }
111 })
112}
113
114func (m *editorCmp) Init() tea.Cmd {
115 return nil
116}
117
118func (m *editorCmp) send() tea.Cmd {
119 if m.app.CoderAgent.IsSessionBusy(m.session.ID) {
120 return util.ReportWarn("Agent is working, please wait...")
121 }
122
123 value := m.textarea.Value()
124 value = strings.TrimSpace(value)
125
126 switch value {
127 case "exit", "quit":
128 m.textarea.Reset()
129 return util.CmdHandler(dialogs.OpenDialogMsg{Model: quit.NewQuitDialog()})
130 }
131
132 m.textarea.Reset()
133 attachments := m.attachments
134
135 m.attachments = nil
136 if value == "" {
137 return nil
138 }
139 return tea.Batch(
140 util.CmdHandler(chat.SendMsg{
141 Text: value,
142 Attachments: attachments,
143 }),
144 )
145}
146
147func (m *editorCmp) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
148 var cmd tea.Cmd
149 var cmds []tea.Cmd
150 switch msg := msg.(type) {
151 case tea.KeyboardEnhancementsMsg:
152 m.keyMap.keyboard = msg
153 return m, nil
154 case chat.SessionSelectedMsg:
155 if msg.ID != m.session.ID {
156 m.session = msg
157 }
158 return m, nil
159 case filepicker.FilePickedMsg:
160 if len(m.attachments) >= maxAttachments {
161 return m, util.ReportError(fmt.Errorf("cannot add more than %d images", maxAttachments))
162 }
163 m.attachments = append(m.attachments, msg.Attachment)
164 return m, nil
165 case completions.CompletionsClosedMsg:
166 m.isCompletionsOpen = false
167 m.currentQuery = ""
168 m.completionsStartIndex = 0
169 case completions.SelectCompletionMsg:
170 if !m.isCompletionsOpen {
171 return m, nil
172 }
173 if item, ok := msg.Value.(FileCompletionItem); ok {
174 // If the selected item is a file, insert its path into the textarea
175 value := m.textarea.Value()
176 value = value[:m.completionsStartIndex]
177 if len(value) > 0 && value[len(value)-1] != ' ' {
178 value += " "
179 }
180 value += item.Path
181 m.textarea.SetValue(value)
182 m.isCompletionsOpen = false
183 m.currentQuery = ""
184 m.completionsStartIndex = 0
185 return m, nil
186 }
187 case tea.KeyPressMsg:
188 switch {
189 // Completions
190 case msg.String() == "/" && !m.isCompletionsOpen:
191 m.isCompletionsOpen = true
192 m.currentQuery = ""
193 cmds = append(cmds, m.startCompletions)
194 m.completionsStartIndex = len(m.textarea.Value())
195 case msg.String() == "space" && m.isCompletionsOpen:
196 m.isCompletionsOpen = false
197 m.currentQuery = ""
198 m.completionsStartIndex = 0
199 cmds = append(cmds, util.CmdHandler(completions.CloseCompletionsMsg{}))
200 case m.isCompletionsOpen && m.textarea.Cursor().X <= m.completionsStartIndex:
201 cmds = append(cmds, util.CmdHandler(completions.CloseCompletionsMsg{}))
202 case msg.String() == "backspace" && m.isCompletionsOpen:
203 if len(m.currentQuery) > 0 {
204 m.currentQuery = m.currentQuery[:len(m.currentQuery)-1]
205 cmds = append(cmds, util.CmdHandler(completions.FilterCompletionsMsg{
206 Query: m.currentQuery,
207 }))
208 } else {
209 m.isCompletionsOpen = false
210 m.currentQuery = ""
211 m.completionsStartIndex = 0
212 cmds = append(cmds, util.CmdHandler(completions.CloseCompletionsMsg{}))
213 }
214 default:
215 if m.isCompletionsOpen {
216 m.currentQuery += msg.String()
217 cmds = append(cmds, util.CmdHandler(completions.FilterCompletionsMsg{
218 Query: m.currentQuery,
219 }))
220 }
221 }
222 if key.Matches(msg, DeleteKeyMaps.AttachmentDeleteMode) {
223 m.deleteMode = true
224 return m, nil
225 }
226 if key.Matches(msg, DeleteKeyMaps.DeleteAllAttachments) && m.deleteMode {
227 m.deleteMode = false
228 m.attachments = nil
229 return m, nil
230 }
231 rune := msg.Code
232 if m.deleteMode && unicode.IsDigit(rune) {
233 num := int(rune - '0')
234 m.deleteMode = false
235 if num < 10 && len(m.attachments) > num {
236 if num == 0 {
237 m.attachments = m.attachments[num+1:]
238 } else {
239 m.attachments = slices.Delete(m.attachments, num, num+1)
240 }
241 return m, nil
242 }
243 }
244 if key.Matches(msg, m.keyMap.OpenEditor) {
245 if m.app.CoderAgent.IsSessionBusy(m.session.ID) {
246 return m, util.ReportWarn("Agent is working, please wait...")
247 }
248 return m, m.openEditor(m.textarea.Value())
249 }
250 if key.Matches(msg, DeleteKeyMaps.Escape) {
251 m.deleteMode = false
252 return m, nil
253 }
254 if key.Matches(msg, m.keyMap.Newline) {
255 m.textarea.InsertRune('\n')
256 }
257 // Handle Enter key
258 if m.textarea.Focused() && key.Matches(msg, m.keyMap.SendMessage) {
259 value := m.textarea.Value()
260 if len(value) > 0 && value[len(value)-1] == '\\' {
261 // If the last character is a backslash, remove it and add a newline
262 m.textarea.SetValue(value[:len(value)-1] + "\n")
263 return m, nil
264 } else {
265 // Otherwise, send the message
266 return m, m.send()
267 }
268 }
269 }
270
271 m.textarea, cmd = m.textarea.Update(msg)
272 cmds = append(cmds, cmd)
273 return m, tea.Batch(cmds...)
274}
275
276func (m *editorCmp) Cursor() *tea.Cursor {
277 cursor := m.textarea.Cursor()
278 if cursor != nil {
279 cursor.X = cursor.X + m.x + 1
280 cursor.Y = cursor.Y + m.y + 1 // adjust for padding
281 }
282 return cursor
283}
284
285func (m *editorCmp) View() string {
286 t := styles.CurrentTheme()
287 if len(m.attachments) == 0 {
288 content := t.S().Base.Padding(1).Render(
289 m.textarea.View(),
290 )
291 return content
292 }
293 content := t.S().Base.Padding(0, 1, 1, 1).Render(
294 lipgloss.JoinVertical(lipgloss.Top,
295 m.attachmentsContent(),
296 m.textarea.View(),
297 ),
298 )
299 return content
300}
301
302func (m *editorCmp) SetSize(width, height int) tea.Cmd {
303 m.width = width
304 m.height = height
305 m.textarea.SetWidth(width - 2) // adjust for padding
306 m.textarea.SetHeight(height - 2) // adjust for padding
307 return nil
308}
309
310func (m *editorCmp) GetSize() (int, int) {
311 return m.textarea.Width(), m.textarea.Height()
312}
313
314func (m *editorCmp) attachmentsContent() string {
315 var styledAttachments []string
316 t := styles.CurrentTheme()
317 attachmentStyles := t.S().Base.
318 MarginLeft(1).
319 Background(t.FgMuted).
320 Foreground(t.FgBase)
321 for i, attachment := range m.attachments {
322 var filename string
323 if len(attachment.FileName) > 10 {
324 filename = fmt.Sprintf(" %s %s...", styles.DocumentIcon, attachment.FileName[0:7])
325 } else {
326 filename = fmt.Sprintf(" %s %s", styles.DocumentIcon, attachment.FileName)
327 }
328 if m.deleteMode {
329 filename = fmt.Sprintf("%d%s", i, filename)
330 }
331 styledAttachments = append(styledAttachments, attachmentStyles.Render(filename))
332 }
333 content := lipgloss.JoinHorizontal(lipgloss.Left, styledAttachments...)
334 return content
335}
336
337func (m *editorCmp) SetPosition(x, y int) tea.Cmd {
338 m.x = x
339 m.y = y
340 return nil
341}
342
343func (m *editorCmp) startCompletions() tea.Msg {
344 files, _, _ := fsext.ListDirectory(".", []string{}, 0)
345 completionItems := make([]completions.Completion, 0, len(files))
346 for _, file := range files {
347 file = strings.TrimPrefix(file, "./")
348 completionItems = append(completionItems, completions.Completion{
349 Title: file,
350 Value: FileCompletionItem{
351 Path: file,
352 },
353 })
354 }
355
356 x := m.textarea.Cursor().X + m.x + 1
357 y := m.textarea.Cursor().Y + m.y + 1
358 return completions.OpenCompletionsMsg{
359 Completions: completionItems,
360 X: x,
361 Y: y,
362 }
363}
364
365// Blur implements Container.
366func (c *editorCmp) Blur() tea.Cmd {
367 c.textarea.Blur()
368 return nil
369}
370
371// Focus implements Container.
372func (c *editorCmp) Focus() tea.Cmd {
373 return c.textarea.Focus()
374}
375
376// IsFocused implements Container.
377func (c *editorCmp) IsFocused() bool {
378 return c.textarea.Focused()
379}
380
381// Bindings implements Container.
382func (c *editorCmp) Bindings() []key.Binding {
383 return c.keyMap.KeyBindings()
384}
385
386func NewEditorCmp(app *app.App) util.Model {
387 t := styles.CurrentTheme()
388 ta := textarea.New()
389 ta.SetStyles(t.S().TextArea)
390 ta.SetPromptFunc(4, func(lineIndex int, focused bool) string {
391 if lineIndex == 0 {
392 return " > "
393 }
394 if focused {
395 return t.S().Base.Foreground(t.GreenDark).Render("::: ")
396 } else {
397 return t.S().Muted.Render("::: ")
398 }
399 })
400 ta.ShowLineNumbers = false
401 ta.CharLimit = -1
402 ta.Placeholder = "Tell me more about this project..."
403 ta.SetVirtualCursor(false)
404 ta.Focus()
405
406 return &editorCmp{
407 app: app,
408 textarea: ta,
409 keyMap: DefaultEditorKeyMap(),
410 }
411}