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}
39
40type FileCompletionItem struct {
41 Path string // The file path
42}
43
44type editorCmp struct {
45 width int
46 height int
47 x, y int
48 app *app.App
49 session session.Session
50 textarea textarea.Model
51 attachments []message.Attachment
52 deleteMode bool
53
54 keyMap EditorKeyMap
55
56 // File path completions
57 currentQuery string
58 completionsStartIndex int
59 isCompletionsOpen bool
60}
61
62var DeleteKeyMaps = DeleteAttachmentKeyMaps{
63 AttachmentDeleteMode: key.NewBinding(
64 key.WithKeys("ctrl+r"),
65 key.WithHelp("ctrl+r+{i}", "delete attachment at index i"),
66 ),
67 Escape: key.NewBinding(
68 key.WithKeys("esc"),
69 key.WithHelp("esc", "cancel delete mode"),
70 ),
71 DeleteAllAttachments: key.NewBinding(
72 key.WithKeys("r"),
73 key.WithHelp("ctrl+r+r", "delete all attchments"),
74 ),
75}
76
77const (
78 maxAttachments = 5
79)
80
81func (m *editorCmp) openEditor() tea.Cmd {
82 editor := os.Getenv("EDITOR")
83 if editor == "" {
84 // Use platform-appropriate default editor
85 if runtime.GOOS == "windows" {
86 editor = "notepad"
87 } else {
88 editor = "nvim"
89 }
90 }
91
92 tmpfile, err := os.CreateTemp("", "msg_*.md")
93 if err != nil {
94 return util.ReportError(err)
95 }
96 tmpfile.Close()
97 c := exec.Command(editor, tmpfile.Name())
98 c.Stdin = os.Stdin
99 c.Stdout = os.Stdout
100 c.Stderr = os.Stderr
101 return tea.ExecProcess(c, func(err error) tea.Msg {
102 if err != nil {
103 return util.ReportError(err)
104 }
105 content, err := os.ReadFile(tmpfile.Name())
106 if err != nil {
107 return util.ReportError(err)
108 }
109 if len(content) == 0 {
110 return util.ReportWarn("Message is empty")
111 }
112 os.Remove(tmpfile.Name())
113 attachments := m.attachments
114 m.attachments = nil
115 return chat.SendMsg{
116 Text: string(content),
117 Attachments: attachments,
118 }
119 })
120}
121
122func (m *editorCmp) Init() tea.Cmd {
123 return nil
124}
125
126func (m *editorCmp) send() tea.Cmd {
127 if m.app.CoderAgent.IsSessionBusy(m.session.ID) {
128 return util.ReportWarn("Agent is working, please wait...")
129 }
130
131 value := m.textarea.Value()
132 value = strings.TrimSpace(value)
133
134 switch value {
135 case "exit", "quit":
136 m.textarea.Reset()
137 return util.CmdHandler(dialogs.OpenDialogMsg{Model: quit.NewQuitDialog()})
138 }
139
140 m.textarea.Reset()
141 attachments := m.attachments
142
143 m.attachments = nil
144 if value == "" {
145 return nil
146 }
147 return tea.Batch(
148 util.CmdHandler(chat.SendMsg{
149 Text: value,
150 Attachments: attachments,
151 }),
152 )
153}
154
155func (m *editorCmp) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
156 var cmd tea.Cmd
157 var cmds []tea.Cmd
158 switch msg := msg.(type) {
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()
249 }
250 if key.Matches(msg, DeleteKeyMaps.Escape) {
251 m.deleteMode = false
252 return m, nil
253 }
254 // Hanlde Enter key
255 if m.textarea.Focused() && key.Matches(msg, m.keyMap.SendMessage) {
256 value := m.textarea.Value()
257 if len(value) > 0 && value[len(value)-1] == '\\' {
258 // If the last character is a backslash, remove it and add a newline
259 m.textarea.SetValue(value[:len(value)-1] + "\n")
260 return m, nil
261 } else {
262 // Otherwise, send the message
263 return m, m.send()
264 }
265 }
266 }
267 m.textarea, cmd = m.textarea.Update(msg)
268 cmds = append(cmds, cmd)
269 return m, tea.Batch(cmds...)
270}
271
272func (m *editorCmp) View() tea.View {
273 t := styles.CurrentTheme()
274 cursor := m.textarea.Cursor()
275 if cursor != nil {
276 cursor.X = cursor.X + m.x + 1
277 cursor.Y = cursor.Y + m.y + 1 // adjust for padding
278 }
279 if len(m.attachments) == 0 {
280 content := t.S().Base.Padding(1).Render(
281 m.textarea.View(),
282 )
283 view := tea.NewView(content)
284 view.SetCursor(cursor)
285 return view
286 }
287 content := t.S().Base.Padding(0, 1, 1, 1).Render(
288 lipgloss.JoinVertical(lipgloss.Top,
289 m.attachmentsContent(),
290 m.textarea.View(),
291 ),
292 )
293 view := tea.NewView(content)
294 view.SetCursor(cursor)
295 return view
296}
297
298func (m *editorCmp) SetSize(width, height int) tea.Cmd {
299 m.width = width
300 m.height = height
301 m.textarea.SetWidth(width - 2) // adjust for padding
302 m.textarea.SetHeight(height - 2) // adjust for padding
303 return nil
304}
305
306func (m *editorCmp) GetSize() (int, int) {
307 return m.textarea.Width(), m.textarea.Height()
308}
309
310func (m *editorCmp) attachmentsContent() string {
311 var styledAttachments []string
312 t := styles.CurrentTheme()
313 attachmentStyles := t.S().Base.
314 MarginLeft(1).
315 Background(t.FgMuted).
316 Foreground(t.FgBase)
317 for i, attachment := range m.attachments {
318 var filename string
319 if len(attachment.FileName) > 10 {
320 filename = fmt.Sprintf(" %s %s...", styles.DocumentIcon, attachment.FileName[0:7])
321 } else {
322 filename = fmt.Sprintf(" %s %s", styles.DocumentIcon, attachment.FileName)
323 }
324 if m.deleteMode {
325 filename = fmt.Sprintf("%d%s", i, filename)
326 }
327 styledAttachments = append(styledAttachments, attachmentStyles.Render(filename))
328 }
329 content := lipgloss.JoinHorizontal(lipgloss.Left, styledAttachments...)
330 return content
331}
332
333func (m *editorCmp) SetPosition(x, y int) tea.Cmd {
334 m.x = x
335 m.y = y
336 return nil
337}
338
339func (m *editorCmp) startCompletions() tea.Msg {
340 files, _, _ := fsext.ListDirectory(".", []string{}, 0)
341 completionItems := make([]completions.Completion, 0, len(files))
342 for _, file := range files {
343 file = strings.TrimPrefix(file, "./")
344 completionItems = append(completionItems, completions.Completion{
345 Title: file,
346 Value: FileCompletionItem{
347 Path: file,
348 },
349 })
350 }
351
352 x := m.textarea.Cursor().X + m.x + 1
353 y := m.textarea.Cursor().Y + m.y + 1
354 return completions.OpenCompletionsMsg{
355 Completions: completionItems,
356 X: x,
357 Y: y,
358 }
359}
360
361// Blur implements Container.
362func (c *editorCmp) Blur() tea.Cmd {
363 c.textarea.Blur()
364 return nil
365}
366
367// Focus implements Container.
368func (c *editorCmp) Focus() tea.Cmd {
369 return c.textarea.Focus()
370}
371
372// IsFocused implements Container.
373func (c *editorCmp) IsFocused() bool {
374 return c.textarea.Focused()
375}
376
377func (c *editorCmp) Bindings() []key.Binding {
378 return c.keyMap.KeyBindings()
379}
380
381// TODO: most likely we do not need to have the session here
382// we need to move some functionality to the page level
383func (c *editorCmp) SetSession(session session.Session) tea.Cmd {
384 c.session = session
385 return nil
386}
387
388func New(app *app.App) Editor {
389 t := styles.CurrentTheme()
390 ta := textarea.New()
391 ta.SetStyles(t.S().TextArea)
392 ta.SetPromptFunc(4, func(lineIndex int, focused bool) string {
393 if lineIndex == 0 {
394 return " > "
395 }
396 if focused {
397 return t.S().Base.Foreground(t.GreenDark).Render("::: ")
398 } else {
399 return t.S().Muted.Render("::: ")
400 }
401 })
402 ta.ShowLineNumbers = false
403 ta.CharLimit = -1
404 ta.Placeholder = "Tell me more about this project..."
405 ta.SetVirtualCursor(false)
406 ta.Focus()
407
408 return &editorCmp{
409 // TODO: remove the app instance from here
410 app: app,
411 textarea: ta,
412 keyMap: DefaultEditorKeyMap(),
413 }
414}