1package tui
2
3import (
4 "context"
5 "fmt"
6 "math/rand"
7 "strings"
8 "time"
9
10 "github.com/charmbracelet/bubbles/v2/key"
11 tea "github.com/charmbracelet/bubbletea/v2"
12 "github.com/charmbracelet/crush/internal/app"
13 "github.com/charmbracelet/crush/internal/config"
14 "github.com/charmbracelet/crush/internal/event"
15 "github.com/charmbracelet/crush/internal/llm/agent"
16 "github.com/charmbracelet/crush/internal/permission"
17 "github.com/charmbracelet/crush/internal/pubsub"
18 cmpChat "github.com/charmbracelet/crush/internal/tui/components/chat"
19 "github.com/charmbracelet/crush/internal/tui/components/chat/splash"
20 "github.com/charmbracelet/crush/internal/tui/components/completions"
21 "github.com/charmbracelet/crush/internal/tui/components/core"
22 "github.com/charmbracelet/crush/internal/tui/components/core/layout"
23 "github.com/charmbracelet/crush/internal/tui/components/core/status"
24 "github.com/charmbracelet/crush/internal/tui/components/dialogs"
25 "github.com/charmbracelet/crush/internal/tui/components/dialogs/commands"
26 "github.com/charmbracelet/crush/internal/tui/components/dialogs/compact"
27 "github.com/charmbracelet/crush/internal/tui/components/dialogs/filepicker"
28 "github.com/charmbracelet/crush/internal/tui/components/dialogs/models"
29 "github.com/charmbracelet/crush/internal/tui/components/dialogs/permissions"
30 "github.com/charmbracelet/crush/internal/tui/components/dialogs/quit"
31 "github.com/charmbracelet/crush/internal/tui/components/dialogs/sessions"
32 "github.com/charmbracelet/crush/internal/tui/page"
33 "github.com/charmbracelet/crush/internal/tui/page/chat"
34 "github.com/charmbracelet/crush/internal/tui/styles"
35 "github.com/charmbracelet/crush/internal/tui/util"
36 "github.com/charmbracelet/lipgloss/v2"
37)
38
39var lastMouseEvent time.Time
40
41func MouseEventFilter(m tea.Model, msg tea.Msg) tea.Msg {
42 switch msg.(type) {
43 case tea.MouseWheelMsg, tea.MouseMotionMsg:
44 now := time.Now()
45 // trackpad is sending too many requests
46 if now.Sub(lastMouseEvent) < 15*time.Millisecond {
47 return nil
48 }
49 lastMouseEvent = now
50 }
51 return msg
52}
53
54// appModel represents the main application model that manages pages, dialogs, and UI state.
55type appModel struct {
56 wWidth, wHeight int // Window dimensions
57 width, height int
58 keyMap KeyMap
59
60 currentPage page.PageID
61 previousPage page.PageID
62 pages map[page.PageID]util.Model
63 loadedPages map[page.PageID]bool
64
65 // Status
66 status status.StatusCmp
67 showingFullHelp bool
68
69 app *app.App
70
71 dialog dialogs.DialogCmp
72 completions completions.Completions
73 isConfigured bool
74
75 // Chat Page Specific
76 selectedSessionID string // The ID of the currently selected session
77}
78
79// Init initializes the application model and returns initial commands.
80func (a appModel) Init() tea.Cmd {
81 item, ok := a.pages[a.currentPage]
82 if !ok {
83 return nil
84 }
85
86 var cmds []tea.Cmd
87 cmd := item.Init()
88 cmds = append(cmds, cmd)
89 a.loadedPages[a.currentPage] = true
90
91 cmd = a.status.Init()
92 cmds = append(cmds, cmd)
93
94 cmds = append(cmds, tea.EnableMouseAllMotion)
95
96 return tea.Batch(cmds...)
97}
98
99// Update handles incoming messages and updates the application state.
100func (a *appModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
101 var cmds []tea.Cmd
102 var cmd tea.Cmd
103 a.isConfigured = config.HasInitialDataConfig()
104
105 switch msg := msg.(type) {
106 case tea.KeyboardEnhancementsMsg:
107 for id, page := range a.pages {
108 m, pageCmd := page.Update(msg)
109 if model, ok := m.(util.Model); ok {
110 a.pages[id] = model
111 }
112
113 if pageCmd != nil {
114 cmds = append(cmds, pageCmd)
115 }
116 }
117 return a, tea.Batch(cmds...)
118 case tea.WindowSizeMsg:
119 a.wWidth, a.wHeight = msg.Width, msg.Height
120 a.completions.Update(msg)
121 return a, a.handleWindowResize(msg.Width, msg.Height)
122
123 // Completions messages
124 case completions.OpenCompletionsMsg, completions.FilterCompletionsMsg,
125 completions.CloseCompletionsMsg, completions.RepositionCompletionsMsg:
126 u, completionCmd := a.completions.Update(msg)
127 if model, ok := u.(completions.Completions); ok {
128 a.completions = model
129 }
130
131 return a, completionCmd
132
133 // Dialog messages
134 case dialogs.OpenDialogMsg, dialogs.CloseDialogMsg:
135 u, completionCmd := a.completions.Update(completions.CloseCompletionsMsg{})
136 a.completions = u.(completions.Completions)
137 u, dialogCmd := a.dialog.Update(msg)
138 a.dialog = u.(dialogs.DialogCmp)
139 return a, tea.Batch(completionCmd, dialogCmd)
140 case commands.ShowArgumentsDialogMsg:
141 return a, util.CmdHandler(
142 dialogs.OpenDialogMsg{
143 Model: commands.NewCommandArgumentsDialog(
144 msg.CommandID,
145 msg.Content,
146 msg.ArgNames,
147 ),
148 },
149 )
150 // Page change messages
151 case page.PageChangeMsg:
152 return a, a.moveToPage(msg.ID)
153
154 // Status Messages
155 case util.InfoMsg, util.ClearStatusMsg:
156 s, statusCmd := a.status.Update(msg)
157 a.status = s.(status.StatusCmp)
158 cmds = append(cmds, statusCmd)
159 return a, tea.Batch(cmds...)
160
161 // Session
162 case cmpChat.SessionSelectedMsg:
163 a.selectedSessionID = msg.ID
164 case cmpChat.SessionClearedMsg:
165 a.selectedSessionID = ""
166 // Commands
167 case commands.SwitchSessionsMsg:
168 return a, func() tea.Msg {
169 allSessions, _ := a.app.Sessions.List(context.Background())
170 return dialogs.OpenDialogMsg{
171 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
172 }
173 }
174
175 case commands.SwitchModelMsg:
176 return a, util.CmdHandler(
177 dialogs.OpenDialogMsg{
178 Model: models.NewModelDialogCmp(),
179 },
180 )
181 // Compact
182 case commands.CompactMsg:
183 return a, util.CmdHandler(dialogs.OpenDialogMsg{
184 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, msg.SessionID, true),
185 })
186 case commands.QuitMsg:
187 return a, util.CmdHandler(dialogs.OpenDialogMsg{
188 Model: quit.NewQuitDialog(),
189 })
190 case commands.ToggleYoloModeMsg:
191 a.app.Permissions.SetSkipRequests(!a.app.Permissions.SkipRequests())
192 case commands.ToggleHelpMsg:
193 a.status.ToggleFullHelp()
194 a.showingFullHelp = !a.showingFullHelp
195 return a, a.handleWindowResize(a.wWidth, a.wHeight)
196 // Model Switch
197 case models.ModelSelectedMsg:
198 if a.app.CoderAgent.IsBusy() {
199 return a, util.ReportWarn("Agent is busy, please wait...")
200 }
201
202 config.Get().UpdatePreferredModel(msg.ModelType, msg.Model)
203
204 // Update the agent with the new model/provider configuration
205 if err := a.app.UpdateAgentModel(); err != nil {
206 return a, util.ReportError(fmt.Errorf("model changed to %s but failed to update agent: %v", msg.Model.Model, err))
207 }
208
209 modelTypeName := "large"
210 if msg.ModelType == config.SelectedModelTypeSmall {
211 modelTypeName = "small"
212 }
213 return a, util.ReportInfo(fmt.Sprintf("%s model changed to %s", modelTypeName, msg.Model.Model))
214
215 // File Picker
216 case commands.OpenFilePickerMsg:
217 event.FilePickerOpened()
218
219 if a.dialog.ActiveDialogID() == filepicker.FilePickerID {
220 // If the commands dialog is already open, close it
221 return a, util.CmdHandler(dialogs.CloseDialogMsg{})
222 }
223 return a, util.CmdHandler(dialogs.OpenDialogMsg{
224 Model: filepicker.NewFilePickerCmp(a.app.Config().WorkingDir()),
225 })
226 // Permissions
227 case pubsub.Event[permission.PermissionNotification]:
228 item, ok := a.pages[a.currentPage]
229 if !ok {
230 return a, nil
231 }
232
233 // Forward to view.
234 updated, itemCmd := item.Update(msg)
235 if model, ok := updated.(util.Model); ok {
236 a.pages[a.currentPage] = model
237 }
238
239 return a, itemCmd
240 case pubsub.Event[permission.PermissionRequest]:
241 return a, util.CmdHandler(dialogs.OpenDialogMsg{
242 Model: permissions.NewPermissionDialogCmp(msg.Payload, &permissions.Options{
243 DiffMode: config.Get().Options.TUI.DiffMode,
244 }),
245 })
246 case permissions.PermissionResponseMsg:
247 switch msg.Action {
248 case permissions.PermissionAllow:
249 a.app.Permissions.Grant(msg.Permission)
250 case permissions.PermissionAllowForSession:
251 a.app.Permissions.GrantPersistent(msg.Permission)
252 case permissions.PermissionDeny:
253 a.app.Permissions.Deny(msg.Permission)
254 }
255 return a, nil
256 // Agent Events
257 case pubsub.Event[agent.AgentEvent]:
258 payload := msg.Payload
259
260 // Forward agent events to dialogs
261 if a.dialog.HasDialogs() && a.dialog.ActiveDialogID() == compact.CompactDialogID {
262 u, dialogCmd := a.dialog.Update(payload)
263 if model, ok := u.(dialogs.DialogCmp); ok {
264 a.dialog = model
265 }
266
267 cmds = append(cmds, dialogCmd)
268 }
269
270 // Handle auto-compact logic
271 if payload.Done && payload.Type == agent.AgentEventTypeResponse && a.selectedSessionID != "" {
272 // Get current session to check token usage
273 session, err := a.app.Sessions.Get(context.Background(), a.selectedSessionID)
274 if err == nil {
275 model := a.app.CoderAgent.Model()
276 contextWindow := model.ContextWindow
277 tokens := session.CompletionTokens + session.PromptTokens
278 if (tokens >= int64(float64(contextWindow)*0.95)) && !config.Get().Options.DisableAutoSummarize { // Show compact confirmation dialog
279 cmds = append(cmds, util.CmdHandler(dialogs.OpenDialogMsg{
280 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, a.selectedSessionID, false),
281 }))
282 }
283 }
284 }
285
286 return a, tea.Batch(cmds...)
287 case splash.OnboardingCompleteMsg:
288 item, ok := a.pages[a.currentPage]
289 if !ok {
290 return a, nil
291 }
292
293 a.isConfigured = config.HasInitialDataConfig()
294 updated, pageCmd := item.Update(msg)
295 if model, ok := updated.(util.Model); ok {
296 a.pages[a.currentPage] = model
297 }
298
299 cmds = append(cmds, pageCmd)
300 return a, tea.Batch(cmds...)
301
302 case tea.KeyPressMsg:
303 return a, a.handleKeyPressMsg(msg)
304
305 case tea.MouseWheelMsg:
306 if a.dialog.HasDialogs() {
307 u, dialogCmd := a.dialog.Update(msg)
308 a.dialog = u.(dialogs.DialogCmp)
309 cmds = append(cmds, dialogCmd)
310 } else {
311 item, ok := a.pages[a.currentPage]
312 if !ok {
313 return a, nil
314 }
315
316 updated, pageCmd := item.Update(msg)
317 if model, ok := updated.(util.Model); ok {
318 a.pages[a.currentPage] = model
319 }
320
321 cmds = append(cmds, pageCmd)
322 }
323 return a, tea.Batch(cmds...)
324 case tea.PasteMsg:
325 if a.dialog.HasDialogs() {
326 u, dialogCmd := a.dialog.Update(msg)
327 if model, ok := u.(dialogs.DialogCmp); ok {
328 a.dialog = model
329 }
330
331 cmds = append(cmds, dialogCmd)
332 } else {
333 item, ok := a.pages[a.currentPage]
334 if !ok {
335 return a, nil
336 }
337
338 updated, pageCmd := item.Update(msg)
339 if model, ok := updated.(util.Model); ok {
340 a.pages[a.currentPage] = model
341 }
342
343 cmds = append(cmds, pageCmd)
344 }
345 return a, tea.Batch(cmds...)
346 }
347 s, _ := a.status.Update(msg)
348 a.status = s.(status.StatusCmp)
349
350 item, ok := a.pages[a.currentPage]
351 if !ok {
352 return a, nil
353 }
354
355 updated, cmd := item.Update(msg)
356 if model, ok := updated.(util.Model); ok {
357 a.pages[a.currentPage] = model
358 }
359
360 if a.dialog.HasDialogs() {
361 u, dialogCmd := a.dialog.Update(msg)
362 if model, ok := u.(dialogs.DialogCmp); ok {
363 a.dialog = model
364 }
365
366 cmds = append(cmds, dialogCmd)
367 }
368 cmds = append(cmds, cmd)
369 return a, tea.Batch(cmds...)
370}
371
372// handleWindowResize processes window resize events and updates all components.
373func (a *appModel) handleWindowResize(width, height int) tea.Cmd {
374 var cmds []tea.Cmd
375
376 // TODO: clean up these magic numbers.
377 if a.showingFullHelp {
378 height -= 5
379 } else {
380 height -= 2
381 }
382
383 a.width, a.height = width, height
384 // Update status bar
385 s, cmd := a.status.Update(tea.WindowSizeMsg{Width: width, Height: height})
386 if model, ok := s.(status.StatusCmp); ok {
387 a.status = model
388 }
389 cmds = append(cmds, cmd)
390
391 // Update the current view.
392 for p, page := range a.pages {
393 updated, pageCmd := page.Update(tea.WindowSizeMsg{Width: width, Height: height})
394 if model, ok := updated.(util.Model); ok {
395 a.pages[p] = model
396 }
397
398 cmds = append(cmds, pageCmd)
399 }
400
401 // Update the dialogs
402 dialog, cmd := a.dialog.Update(tea.WindowSizeMsg{Width: width, Height: height})
403 if model, ok := dialog.(dialogs.DialogCmp); ok {
404 a.dialog = model
405 }
406
407 cmds = append(cmds, cmd)
408
409 return tea.Batch(cmds...)
410}
411
412// handleKeyPressMsg processes keyboard input and routes to appropriate handlers.
413func (a *appModel) handleKeyPressMsg(msg tea.KeyPressMsg) tea.Cmd {
414 // Check this first as the user should be able to quit no matter what.
415 if key.Matches(msg, a.keyMap.Quit) {
416 if a.dialog.ActiveDialogID() == quit.QuitDialogID {
417 return tea.Quit
418 }
419 return util.CmdHandler(dialogs.OpenDialogMsg{
420 Model: quit.NewQuitDialog(),
421 })
422 }
423
424 if a.completions.Open() {
425 // completions
426 keyMap := a.completions.KeyMap()
427 switch {
428 case key.Matches(msg, keyMap.Up), key.Matches(msg, keyMap.Down),
429 key.Matches(msg, keyMap.Select), key.Matches(msg, keyMap.Cancel),
430 key.Matches(msg, keyMap.UpInsert), key.Matches(msg, keyMap.DownInsert):
431 u, cmd := a.completions.Update(msg)
432 a.completions = u.(completions.Completions)
433 return cmd
434 }
435 }
436 if a.dialog.HasDialogs() {
437 u, dialogCmd := a.dialog.Update(msg)
438 a.dialog = u.(dialogs.DialogCmp)
439 return dialogCmd
440 }
441 switch {
442 // help
443 case key.Matches(msg, a.keyMap.Help):
444 a.status.ToggleFullHelp()
445 a.showingFullHelp = !a.showingFullHelp
446 return a.handleWindowResize(a.wWidth, a.wHeight)
447 // dialogs
448 case key.Matches(msg, a.keyMap.Commands):
449 // if the app is not configured show no commands
450 if !a.isConfigured {
451 return nil
452 }
453 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
454 return util.CmdHandler(dialogs.CloseDialogMsg{})
455 }
456 if a.dialog.HasDialogs() {
457 return nil
458 }
459 return util.CmdHandler(dialogs.OpenDialogMsg{
460 Model: commands.NewCommandDialog(a.selectedSessionID),
461 })
462 case key.Matches(msg, a.keyMap.Sessions):
463 // if the app is not configured show no sessions
464 if !a.isConfigured {
465 return nil
466 }
467 if a.dialog.ActiveDialogID() == sessions.SessionsDialogID {
468 return util.CmdHandler(dialogs.CloseDialogMsg{})
469 }
470 if a.dialog.HasDialogs() && a.dialog.ActiveDialogID() != commands.CommandsDialogID {
471 return nil
472 }
473 var cmds []tea.Cmd
474 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
475 // If the commands dialog is open, close it first
476 cmds = append(cmds, util.CmdHandler(dialogs.CloseDialogMsg{}))
477 }
478 cmds = append(cmds,
479 func() tea.Msg {
480 allSessions, _ := a.app.Sessions.List(context.Background())
481 return dialogs.OpenDialogMsg{
482 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
483 }
484 },
485 )
486 return tea.Sequence(cmds...)
487 case key.Matches(msg, a.keyMap.Suspend):
488 if a.app.CoderAgent != nil && a.app.CoderAgent.IsBusy() {
489 return util.ReportWarn("Agent is busy, please wait...")
490 }
491 return tea.Suspend
492 default:
493 item, ok := a.pages[a.currentPage]
494 if !ok {
495 return nil
496 }
497
498 updated, cmd := item.Update(msg)
499 if model, ok := updated.(util.Model); ok {
500 a.pages[a.currentPage] = model
501 }
502 return cmd
503 }
504}
505
506// moveToPage handles navigation between different pages in the application.
507func (a *appModel) moveToPage(pageID page.PageID) tea.Cmd {
508 if a.app.CoderAgent.IsBusy() {
509 // TODO: maybe remove this : For now we don't move to any page if the agent is busy
510 return util.ReportWarn("Agent is busy, please wait...")
511 }
512
513 var cmds []tea.Cmd
514 if _, ok := a.loadedPages[pageID]; !ok {
515 cmd := a.pages[pageID].Init()
516 cmds = append(cmds, cmd)
517 a.loadedPages[pageID] = true
518 }
519 a.previousPage = a.currentPage
520 a.currentPage = pageID
521 if sizable, ok := a.pages[a.currentPage].(layout.Sizeable); ok {
522 cmd := sizable.SetSize(a.width, a.height)
523 cmds = append(cmds, cmd)
524 }
525
526 return tea.Batch(cmds...)
527}
528
529// View renders the complete application interface including pages, dialogs, and overlays.
530func (a *appModel) View() tea.View {
531 var view tea.View
532 t := styles.CurrentTheme()
533 view.BackgroundColor = t.BgBase
534 if a.wWidth < 25 || a.wHeight < 15 {
535 view.Layer = lipgloss.NewCanvas(
536 lipgloss.NewLayer(
537 t.S().Base.Width(a.wWidth).Height(a.wHeight).
538 Align(lipgloss.Center, lipgloss.Center).
539 Render(
540 t.S().Base.
541 Padding(1, 4).
542 Foreground(t.White).
543 BorderStyle(lipgloss.RoundedBorder()).
544 BorderForeground(t.Primary).
545 Render("Window too small!"),
546 ),
547 ),
548 )
549 return view
550 }
551
552 page := a.pages[a.currentPage]
553 if withHelp, ok := page.(core.KeyMapHelp); ok {
554 a.status.SetKeyMap(withHelp.Help())
555 }
556 pageView := page.View()
557 components := []string{
558 pageView,
559 }
560 components = append(components, a.status.View())
561
562 appView := lipgloss.JoinVertical(lipgloss.Top, components...)
563 layers := []*lipgloss.Layer{
564 lipgloss.NewLayer(appView),
565 }
566 if a.dialog.HasDialogs() {
567 layers = append(
568 layers,
569 a.dialog.GetLayers()...,
570 )
571 }
572
573 var cursor *tea.Cursor
574 if v, ok := page.(util.Cursor); ok {
575 cursor = v.Cursor()
576 // Hide the cursor if it's positioned outside the textarea
577 statusHeight := a.height - strings.Count(pageView, "\n") + 1
578 if cursor != nil && cursor.Y+statusHeight+chat.EditorHeight-2 <= a.height { // 2 for the top and bottom app padding
579 cursor = nil
580 }
581 }
582 activeView := a.dialog.ActiveModel()
583 if activeView != nil {
584 cursor = nil // Reset cursor if a dialog is active unless it implements util.Cursor
585 if v, ok := activeView.(util.Cursor); ok {
586 cursor = v.Cursor()
587 }
588 }
589
590 if a.completions.Open() && cursor != nil {
591 cmp := a.completions.View()
592 x, y := a.completions.Position()
593 layers = append(
594 layers,
595 lipgloss.NewLayer(cmp).X(x).Y(y),
596 )
597 }
598
599 canvas := lipgloss.NewCanvas(
600 layers...,
601 )
602
603 view.Layer = canvas
604 view.Cursor = cursor
605 view.ProgressBar = tea.NewProgressBar(tea.ProgressBarNone, 0)
606 if a.app != nil && a.app.CoderAgent != nil && a.app.CoderAgent.IsBusy() {
607 // HACK: use a random percentage to prevent ghostty from hiding it
608 // after a timeout.
609 view.ProgressBar = tea.NewProgressBar(tea.ProgressBarIndeterminate, rand.Intn(100))
610 }
611 return view
612}
613
614// New creates and initializes a new TUI application model.
615func New(app *app.App) tea.Model {
616 chatPage := chat.New(app)
617 keyMap := DefaultKeyMap()
618 keyMap.pageBindings = chatPage.Bindings()
619
620 model := &appModel{
621 currentPage: chat.ChatPageID,
622 app: app,
623 status: status.NewStatusCmp(),
624 loadedPages: make(map[page.PageID]bool),
625 keyMap: keyMap,
626
627 pages: map[page.PageID]util.Model{
628 chat.ChatPageID: chatPage,
629 },
630
631 dialog: dialogs.NewDialogCmp(),
632 completions: completions.New(),
633 }
634
635 return model
636}