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 chat.SessionSelectedMsg:
152 if msg.ID != m.session.ID {
153 m.session = msg
154 }
155 return m, nil
156 case filepicker.FilePickedMsg:
157 if len(m.attachments) >= maxAttachments {
158 return m, util.ReportError(fmt.Errorf("cannot add more than %d images", maxAttachments))
159 }
160 m.attachments = append(m.attachments, msg.Attachment)
161 return m, nil
162 case completions.CompletionsClosedMsg:
163 m.isCompletionsOpen = false
164 m.currentQuery = ""
165 m.completionsStartIndex = 0
166 case completions.SelectCompletionMsg:
167 if !m.isCompletionsOpen {
168 return m, nil
169 }
170 if item, ok := msg.Value.(FileCompletionItem); ok {
171 // If the selected item is a file, insert its path into the textarea
172 value := m.textarea.Value()
173 value = value[:m.completionsStartIndex]
174 if len(value) > 0 && value[len(value)-1] != ' ' {
175 value += " "
176 }
177 value += item.Path
178 m.textarea.SetValue(value)
179 m.isCompletionsOpen = false
180 m.currentQuery = ""
181 m.completionsStartIndex = 0
182 return m, nil
183 }
184 case tea.KeyPressMsg:
185 switch {
186 // Completions
187 case msg.String() == "/" && !m.isCompletionsOpen:
188 m.isCompletionsOpen = true
189 m.currentQuery = ""
190 cmds = append(cmds, m.startCompletions)
191 m.completionsStartIndex = len(m.textarea.Value())
192 case msg.String() == "space" && m.isCompletionsOpen:
193 m.isCompletionsOpen = false
194 m.currentQuery = ""
195 m.completionsStartIndex = 0
196 cmds = append(cmds, util.CmdHandler(completions.CloseCompletionsMsg{}))
197 case m.isCompletionsOpen && m.textarea.Cursor().X <= m.completionsStartIndex:
198 cmds = append(cmds, util.CmdHandler(completions.CloseCompletionsMsg{}))
199 case msg.String() == "backspace" && m.isCompletionsOpen:
200 if len(m.currentQuery) > 0 {
201 m.currentQuery = m.currentQuery[:len(m.currentQuery)-1]
202 cmds = append(cmds, util.CmdHandler(completions.FilterCompletionsMsg{
203 Query: m.currentQuery,
204 }))
205 } else {
206 m.isCompletionsOpen = false
207 m.currentQuery = ""
208 m.completionsStartIndex = 0
209 cmds = append(cmds, util.CmdHandler(completions.CloseCompletionsMsg{}))
210 }
211 default:
212 if m.isCompletionsOpen {
213 m.currentQuery += msg.String()
214 cmds = append(cmds, util.CmdHandler(completions.FilterCompletionsMsg{
215 Query: m.currentQuery,
216 }))
217 }
218 }
219 if key.Matches(msg, DeleteKeyMaps.AttachmentDeleteMode) {
220 m.deleteMode = true
221 return m, nil
222 }
223 if key.Matches(msg, DeleteKeyMaps.DeleteAllAttachments) && m.deleteMode {
224 m.deleteMode = false
225 m.attachments = nil
226 return m, nil
227 }
228 rune := msg.Code
229 if m.deleteMode && unicode.IsDigit(rune) {
230 num := int(rune - '0')
231 m.deleteMode = false
232 if num < 10 && len(m.attachments) > num {
233 if num == 0 {
234 m.attachments = m.attachments[num+1:]
235 } else {
236 m.attachments = slices.Delete(m.attachments, num, num+1)
237 }
238 return m, nil
239 }
240 }
241 if key.Matches(msg, m.keyMap.OpenEditor) {
242 if m.app.CoderAgent.IsSessionBusy(m.session.ID) {
243 return m, util.ReportWarn("Agent is working, please wait...")
244 }
245 return m, m.openEditor(m.textarea.Value())
246 }
247 if key.Matches(msg, DeleteKeyMaps.Escape) {
248 m.deleteMode = false
249 return m, nil
250 }
251 // Hanlde Enter key
252 if m.textarea.Focused() && key.Matches(msg, m.keyMap.SendMessage) {
253 value := m.textarea.Value()
254 if len(value) > 0 && value[len(value)-1] == '\\' {
255 // If the last character is a backslash, remove it and add a newline
256 m.textarea.SetValue(value[:len(value)-1] + "\n")
257 return m, nil
258 } else {
259 // Otherwise, send the message
260 return m, m.send()
261 }
262 }
263 }
264 m.textarea, cmd = m.textarea.Update(msg)
265 cmds = append(cmds, cmd)
266 return m, tea.Batch(cmds...)
267}
268
269func (m *editorCmp) Cursor() *tea.Cursor {
270 cursor := m.textarea.Cursor()
271 if cursor != nil {
272 cursor.X = cursor.X + m.x + 1
273 cursor.Y = cursor.Y + m.y + 1 // adjust for padding
274 }
275 return cursor
276}
277
278func (m *editorCmp) View() string {
279 t := styles.CurrentTheme()
280 if len(m.attachments) == 0 {
281 content := t.S().Base.Padding(1).Render(
282 m.textarea.View(),
283 )
284 return content
285 }
286 content := t.S().Base.Padding(0, 1, 1, 1).Render(
287 lipgloss.JoinVertical(lipgloss.Top,
288 m.attachmentsContent(),
289 m.textarea.View(),
290 ),
291 )
292 return content
293}
294
295func (m *editorCmp) SetSize(width, height int) tea.Cmd {
296 m.width = width
297 m.height = height
298 m.textarea.SetWidth(width - 2) // adjust for padding
299 m.textarea.SetHeight(height - 2) // adjust for padding
300 return nil
301}
302
303func (m *editorCmp) GetSize() (int, int) {
304 return m.textarea.Width(), m.textarea.Height()
305}
306
307func (m *editorCmp) attachmentsContent() string {
308 var styledAttachments []string
309 t := styles.CurrentTheme()
310 attachmentStyles := t.S().Base.
311 MarginLeft(1).
312 Background(t.FgMuted).
313 Foreground(t.FgBase)
314 for i, attachment := range m.attachments {
315 var filename string
316 if len(attachment.FileName) > 10 {
317 filename = fmt.Sprintf(" %s %s...", styles.DocumentIcon, attachment.FileName[0:7])
318 } else {
319 filename = fmt.Sprintf(" %s %s", styles.DocumentIcon, attachment.FileName)
320 }
321 if m.deleteMode {
322 filename = fmt.Sprintf("%d%s", i, filename)
323 }
324 styledAttachments = append(styledAttachments, attachmentStyles.Render(filename))
325 }
326 content := lipgloss.JoinHorizontal(lipgloss.Left, styledAttachments...)
327 return content
328}
329
330func (m *editorCmp) SetPosition(x, y int) tea.Cmd {
331 m.x = x
332 m.y = y
333 return nil
334}
335
336func (m *editorCmp) startCompletions() tea.Msg {
337 files, _, _ := fsext.ListDirectory(".", []string{}, 0)
338 completionItems := make([]completions.Completion, 0, len(files))
339 for _, file := range files {
340 file = strings.TrimPrefix(file, "./")
341 completionItems = append(completionItems, completions.Completion{
342 Title: file,
343 Value: FileCompletionItem{
344 Path: file,
345 },
346 })
347 }
348
349 x := m.textarea.Cursor().X + m.x + 1
350 y := m.textarea.Cursor().Y + m.y + 1
351 return completions.OpenCompletionsMsg{
352 Completions: completionItems,
353 X: x,
354 Y: y,
355 }
356}
357
358// Blur implements Container.
359func (c *editorCmp) Blur() tea.Cmd {
360 c.textarea.Blur()
361 return nil
362}
363
364// Focus implements Container.
365func (c *editorCmp) Focus() tea.Cmd {
366 return c.textarea.Focus()
367}
368
369// IsFocused implements Container.
370func (c *editorCmp) IsFocused() bool {
371 return c.textarea.Focused()
372}
373
374func (c *editorCmp) Bindings() []key.Binding {
375 return c.keyMap.KeyBindings()
376}
377
378func NewEditorCmp(app *app.App) util.Model {
379 t := styles.CurrentTheme()
380 ta := textarea.New()
381 ta.SetStyles(t.S().TextArea)
382 ta.SetPromptFunc(4, func(lineIndex int, focused bool) string {
383 if lineIndex == 0 {
384 return " > "
385 }
386 if focused {
387 return t.S().Base.Foreground(t.GreenDark).Render("::: ")
388 } else {
389 return t.S().Muted.Render("::: ")
390 }
391 })
392 ta.ShowLineNumbers = false
393 ta.CharLimit = -1
394 ta.Placeholder = "Tell me more about this project..."
395 ta.SetVirtualCursor(false)
396 ta.Focus()
397
398 return &editorCmp{
399 app: app,
400 textarea: ta,
401 keyMap: DefaultEditorKeyMap(),
402 }
403}