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 if msg.SupportsKeyDisambiguation() {
108 a.keyMap.Models.SetHelp("ctrl+m", "models")
109 }
110 for id, page := range a.pages {
111 m, pageCmd := page.Update(msg)
112 if model, ok := m.(util.Model); ok {
113 a.pages[id] = model
114 }
115
116 if pageCmd != nil {
117 cmds = append(cmds, pageCmd)
118 }
119 }
120 return a, tea.Batch(cmds...)
121 case tea.WindowSizeMsg:
122 a.wWidth, a.wHeight = msg.Width, msg.Height
123 a.completions.Update(msg)
124 return a, a.handleWindowResize(msg.Width, msg.Height)
125
126 // Completions messages
127 case completions.OpenCompletionsMsg, completions.FilterCompletionsMsg,
128 completions.CloseCompletionsMsg, completions.RepositionCompletionsMsg:
129 u, completionCmd := a.completions.Update(msg)
130 if model, ok := u.(completions.Completions); ok {
131 a.completions = model
132 }
133
134 return a, completionCmd
135
136 // Dialog messages
137 case dialogs.OpenDialogMsg, dialogs.CloseDialogMsg:
138 u, completionCmd := a.completions.Update(completions.CloseCompletionsMsg{})
139 a.completions = u.(completions.Completions)
140 u, dialogCmd := a.dialog.Update(msg)
141 a.dialog = u.(dialogs.DialogCmp)
142 return a, tea.Batch(completionCmd, dialogCmd)
143 case commands.ShowArgumentsDialogMsg:
144 return a, util.CmdHandler(
145 dialogs.OpenDialogMsg{
146 Model: commands.NewCommandArgumentsDialog(
147 msg.CommandID,
148 msg.Content,
149 msg.ArgNames,
150 ),
151 },
152 )
153 // Page change messages
154 case page.PageChangeMsg:
155 return a, a.moveToPage(msg.ID)
156
157 // Status Messages
158 case util.InfoMsg, util.ClearStatusMsg:
159 s, statusCmd := a.status.Update(msg)
160 a.status = s.(status.StatusCmp)
161 cmds = append(cmds, statusCmd)
162 return a, tea.Batch(cmds...)
163
164 // Session
165 case cmpChat.SessionSelectedMsg:
166 a.selectedSessionID = msg.ID
167 case cmpChat.SessionClearedMsg:
168 a.selectedSessionID = ""
169 // Commands
170 case commands.SwitchSessionsMsg:
171 return a, func() tea.Msg {
172 allSessions, _ := a.app.Sessions.List(context.Background())
173 return dialogs.OpenDialogMsg{
174 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
175 }
176 }
177
178 case commands.SwitchModelMsg:
179 return a, util.CmdHandler(
180 dialogs.OpenDialogMsg{
181 Model: models.NewModelDialogCmp(),
182 },
183 )
184 // Compact
185 case commands.CompactMsg:
186 return a, util.CmdHandler(dialogs.OpenDialogMsg{
187 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, msg.SessionID, true),
188 })
189 case commands.QuitMsg:
190 return a, util.CmdHandler(dialogs.OpenDialogMsg{
191 Model: quit.NewQuitDialog(),
192 })
193 case commands.ToggleYoloModeMsg:
194 a.app.Permissions.SetSkipRequests(!a.app.Permissions.SkipRequests())
195 case commands.ToggleHelpMsg:
196 a.status.ToggleFullHelp()
197 a.showingFullHelp = !a.showingFullHelp
198 return a, a.handleWindowResize(a.wWidth, a.wHeight)
199 // Model Switch
200 case models.ModelSelectedMsg:
201 if a.app.CoderAgent.IsBusy() {
202 return a, util.ReportWarn("Agent is busy, please wait...")
203 }
204
205 config.Get().UpdatePreferredModel(msg.ModelType, msg.Model)
206
207 // Update the agent with the new model/provider configuration
208 if err := a.app.UpdateAgentModel(); err != nil {
209 return a, util.ReportError(fmt.Errorf("model changed to %s but failed to update agent: %v", msg.Model.Model, err))
210 }
211
212 modelTypeName := "large"
213 if msg.ModelType == config.SelectedModelTypeSmall {
214 modelTypeName = "small"
215 }
216 return a, util.ReportInfo(fmt.Sprintf("%s model changed to %s", modelTypeName, msg.Model.Model))
217
218 // File Picker
219 case commands.OpenFilePickerMsg:
220 event.FilePickerOpened()
221
222 if a.dialog.ActiveDialogID() == filepicker.FilePickerID {
223 // If the commands dialog is already open, close it
224 return a, util.CmdHandler(dialogs.CloseDialogMsg{})
225 }
226 return a, util.CmdHandler(dialogs.OpenDialogMsg{
227 Model: filepicker.NewFilePickerCmp(a.app.Config().WorkingDir()),
228 })
229 // Permissions
230 case pubsub.Event[permission.PermissionNotification]:
231 item, ok := a.pages[a.currentPage]
232 if !ok {
233 return a, nil
234 }
235
236 // Forward to view.
237 updated, itemCmd := item.Update(msg)
238 if model, ok := updated.(util.Model); ok {
239 a.pages[a.currentPage] = model
240 }
241
242 return a, itemCmd
243 case pubsub.Event[permission.PermissionRequest]:
244 return a, util.CmdHandler(dialogs.OpenDialogMsg{
245 Model: permissions.NewPermissionDialogCmp(msg.Payload, &permissions.Options{
246 DiffMode: config.Get().Options.TUI.DiffMode,
247 }),
248 })
249 case permissions.PermissionResponseMsg:
250 switch msg.Action {
251 case permissions.PermissionAllow:
252 a.app.Permissions.Grant(msg.Permission)
253 case permissions.PermissionAllowForSession:
254 a.app.Permissions.GrantPersistent(msg.Permission)
255 case permissions.PermissionDeny:
256 a.app.Permissions.Deny(msg.Permission)
257 }
258 return a, nil
259 // Agent Events
260 case pubsub.Event[agent.AgentEvent]:
261 payload := msg.Payload
262
263 // Forward agent events to dialogs
264 if a.dialog.HasDialogs() && a.dialog.ActiveDialogID() == compact.CompactDialogID {
265 u, dialogCmd := a.dialog.Update(payload)
266 if model, ok := u.(dialogs.DialogCmp); ok {
267 a.dialog = model
268 }
269
270 cmds = append(cmds, dialogCmd)
271 }
272
273 // Handle auto-compact logic
274 if payload.Done && payload.Type == agent.AgentEventTypeResponse && a.selectedSessionID != "" {
275 // Get current session to check token usage
276 session, err := a.app.Sessions.Get(context.Background(), a.selectedSessionID)
277 if err == nil {
278 model := a.app.CoderAgent.Model()
279 contextWindow := model.ContextWindow
280 tokens := session.CompletionTokens + session.PromptTokens
281 if (tokens >= int64(float64(contextWindow)*0.95)) && !config.Get().Options.DisableAutoSummarize { // Show compact confirmation dialog
282 cmds = append(cmds, util.CmdHandler(dialogs.OpenDialogMsg{
283 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, a.selectedSessionID, false),
284 }))
285 }
286 }
287 }
288
289 return a, tea.Batch(cmds...)
290 case splash.OnboardingCompleteMsg:
291 item, ok := a.pages[a.currentPage]
292 if !ok {
293 return a, nil
294 }
295
296 a.isConfigured = config.HasInitialDataConfig()
297 updated, pageCmd := item.Update(msg)
298 if model, ok := updated.(util.Model); ok {
299 a.pages[a.currentPage] = model
300 }
301
302 cmds = append(cmds, pageCmd)
303 return a, tea.Batch(cmds...)
304
305 case tea.KeyPressMsg:
306 return a, a.handleKeyPressMsg(msg)
307
308 case tea.MouseWheelMsg:
309 if a.dialog.HasDialogs() {
310 u, dialogCmd := a.dialog.Update(msg)
311 a.dialog = u.(dialogs.DialogCmp)
312 cmds = append(cmds, dialogCmd)
313 } else {
314 item, ok := a.pages[a.currentPage]
315 if !ok {
316 return a, nil
317 }
318
319 updated, pageCmd := item.Update(msg)
320 if model, ok := updated.(util.Model); ok {
321 a.pages[a.currentPage] = model
322 }
323
324 cmds = append(cmds, pageCmd)
325 }
326 return a, tea.Batch(cmds...)
327 case tea.PasteMsg:
328 if a.dialog.HasDialogs() {
329 u, dialogCmd := a.dialog.Update(msg)
330 if model, ok := u.(dialogs.DialogCmp); ok {
331 a.dialog = model
332 }
333
334 cmds = append(cmds, dialogCmd)
335 } else {
336 item, ok := a.pages[a.currentPage]
337 if !ok {
338 return a, nil
339 }
340
341 updated, pageCmd := item.Update(msg)
342 if model, ok := updated.(util.Model); ok {
343 a.pages[a.currentPage] = model
344 }
345
346 cmds = append(cmds, pageCmd)
347 }
348 return a, tea.Batch(cmds...)
349 }
350 s, _ := a.status.Update(msg)
351 a.status = s.(status.StatusCmp)
352
353 item, ok := a.pages[a.currentPage]
354 if !ok {
355 return a, nil
356 }
357
358 updated, cmd := item.Update(msg)
359 if model, ok := updated.(util.Model); ok {
360 a.pages[a.currentPage] = model
361 }
362
363 if a.dialog.HasDialogs() {
364 u, dialogCmd := a.dialog.Update(msg)
365 if model, ok := u.(dialogs.DialogCmp); ok {
366 a.dialog = model
367 }
368
369 cmds = append(cmds, dialogCmd)
370 }
371 cmds = append(cmds, cmd)
372 return a, tea.Batch(cmds...)
373}
374
375// handleWindowResize processes window resize events and updates all components.
376func (a *appModel) handleWindowResize(width, height int) tea.Cmd {
377 var cmds []tea.Cmd
378
379 // TODO: clean up these magic numbers.
380 if a.showingFullHelp {
381 height -= 5
382 } else {
383 height -= 2
384 }
385
386 a.width, a.height = width, height
387 // Update status bar
388 s, cmd := a.status.Update(tea.WindowSizeMsg{Width: width, Height: height})
389 if model, ok := s.(status.StatusCmp); ok {
390 a.status = model
391 }
392 cmds = append(cmds, cmd)
393
394 // Update the current view.
395 for p, page := range a.pages {
396 updated, pageCmd := page.Update(tea.WindowSizeMsg{Width: width, Height: height})
397 if model, ok := updated.(util.Model); ok {
398 a.pages[p] = model
399 }
400
401 cmds = append(cmds, pageCmd)
402 }
403
404 // Update the dialogs
405 dialog, cmd := a.dialog.Update(tea.WindowSizeMsg{Width: width, Height: height})
406 if model, ok := dialog.(dialogs.DialogCmp); ok {
407 a.dialog = model
408 }
409
410 cmds = append(cmds, cmd)
411
412 return tea.Batch(cmds...)
413}
414
415// handleKeyPressMsg processes keyboard input and routes to appropriate handlers.
416func (a *appModel) handleKeyPressMsg(msg tea.KeyPressMsg) tea.Cmd {
417 // Check this first as the user should be able to quit no matter what.
418 if key.Matches(msg, a.keyMap.Quit) {
419 if a.dialog.ActiveDialogID() == quit.QuitDialogID {
420 return tea.Quit
421 }
422 return util.CmdHandler(dialogs.OpenDialogMsg{
423 Model: quit.NewQuitDialog(),
424 })
425 }
426
427 if a.completions.Open() {
428 // completions
429 keyMap := a.completions.KeyMap()
430 switch {
431 case key.Matches(msg, keyMap.Up), key.Matches(msg, keyMap.Down),
432 key.Matches(msg, keyMap.Select), key.Matches(msg, keyMap.Cancel),
433 key.Matches(msg, keyMap.UpInsert), key.Matches(msg, keyMap.DownInsert):
434 u, cmd := a.completions.Update(msg)
435 a.completions = u.(completions.Completions)
436 return cmd
437 }
438 }
439 if a.dialog.HasDialogs() {
440 u, dialogCmd := a.dialog.Update(msg)
441 a.dialog = u.(dialogs.DialogCmp)
442 return dialogCmd
443 }
444 switch {
445 // help
446 case key.Matches(msg, a.keyMap.Help):
447 a.status.ToggleFullHelp()
448 a.showingFullHelp = !a.showingFullHelp
449 return a.handleWindowResize(a.wWidth, a.wHeight)
450 // dialogs
451 case key.Matches(msg, a.keyMap.Commands):
452 // if the app is not configured show no commands
453 if !a.isConfigured {
454 return nil
455 }
456 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
457 return util.CmdHandler(dialogs.CloseDialogMsg{})
458 }
459 if a.dialog.HasDialogs() {
460 return nil
461 }
462 return util.CmdHandler(dialogs.OpenDialogMsg{
463 Model: commands.NewCommandDialog(a.selectedSessionID),
464 })
465 case key.Matches(msg, a.keyMap.Models):
466 // if the app is not configured show no commands
467 if !a.isConfigured {
468 return nil
469 }
470 if a.dialog.ActiveDialogID() == models.ModelsDialogID {
471 return util.CmdHandler(dialogs.CloseDialogMsg{})
472 }
473 if a.dialog.HasDialogs() {
474 return nil
475 }
476 return util.CmdHandler(dialogs.OpenDialogMsg{
477 Model: models.NewModelDialogCmp(),
478 })
479
480 case key.Matches(msg, a.keyMap.Sessions):
481 // if the app is not configured show no sessions
482 if !a.isConfigured {
483 return nil
484 }
485 if a.dialog.ActiveDialogID() == sessions.SessionsDialogID {
486 return util.CmdHandler(dialogs.CloseDialogMsg{})
487 }
488 if a.dialog.HasDialogs() && a.dialog.ActiveDialogID() != commands.CommandsDialogID {
489 return nil
490 }
491 var cmds []tea.Cmd
492 cmds = append(cmds,
493 func() tea.Msg {
494 allSessions, _ := a.app.Sessions.List(context.Background())
495 return dialogs.OpenDialogMsg{
496 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
497 }
498 },
499 )
500 return tea.Sequence(cmds...)
501 case key.Matches(msg, a.keyMap.Suspend):
502 if a.app.CoderAgent != nil && a.app.CoderAgent.IsBusy() {
503 return util.ReportWarn("Agent is busy, please wait...")
504 }
505 return tea.Suspend
506 default:
507 item, ok := a.pages[a.currentPage]
508 if !ok {
509 return nil
510 }
511
512 updated, cmd := item.Update(msg)
513 if model, ok := updated.(util.Model); ok {
514 a.pages[a.currentPage] = model
515 }
516 return cmd
517 }
518}
519
520// moveToPage handles navigation between different pages in the application.
521func (a *appModel) moveToPage(pageID page.PageID) tea.Cmd {
522 if a.app.CoderAgent.IsBusy() {
523 // TODO: maybe remove this : For now we don't move to any page if the agent is busy
524 return util.ReportWarn("Agent is busy, please wait...")
525 }
526
527 var cmds []tea.Cmd
528 if _, ok := a.loadedPages[pageID]; !ok {
529 cmd := a.pages[pageID].Init()
530 cmds = append(cmds, cmd)
531 a.loadedPages[pageID] = true
532 }
533 a.previousPage = a.currentPage
534 a.currentPage = pageID
535 if sizable, ok := a.pages[a.currentPage].(layout.Sizeable); ok {
536 cmd := sizable.SetSize(a.width, a.height)
537 cmds = append(cmds, cmd)
538 }
539
540 return tea.Batch(cmds...)
541}
542
543// View renders the complete application interface including pages, dialogs, and overlays.
544func (a *appModel) View() tea.View {
545 var view tea.View
546 t := styles.CurrentTheme()
547 view.BackgroundColor = t.BgBase
548 if a.wWidth < 25 || a.wHeight < 15 {
549 view.Layer = lipgloss.NewCanvas(
550 lipgloss.NewLayer(
551 t.S().Base.Width(a.wWidth).Height(a.wHeight).
552 Align(lipgloss.Center, lipgloss.Center).
553 Render(
554 t.S().Base.
555 Padding(1, 4).
556 Foreground(t.White).
557 BorderStyle(lipgloss.RoundedBorder()).
558 BorderForeground(t.Primary).
559 Render("Window too small!"),
560 ),
561 ),
562 )
563 return view
564 }
565
566 page := a.pages[a.currentPage]
567 if withHelp, ok := page.(core.KeyMapHelp); ok {
568 a.status.SetKeyMap(withHelp.Help())
569 }
570 pageView := page.View()
571 components := []string{
572 pageView,
573 }
574 components = append(components, a.status.View())
575
576 appView := lipgloss.JoinVertical(lipgloss.Top, components...)
577 layers := []*lipgloss.Layer{
578 lipgloss.NewLayer(appView),
579 }
580 if a.dialog.HasDialogs() {
581 layers = append(
582 layers,
583 a.dialog.GetLayers()...,
584 )
585 }
586
587 var cursor *tea.Cursor
588 if v, ok := page.(util.Cursor); ok {
589 cursor = v.Cursor()
590 // Hide the cursor if it's positioned outside the textarea
591 statusHeight := a.height - strings.Count(pageView, "\n") + 1
592 if cursor != nil && cursor.Y+statusHeight+chat.EditorHeight-2 <= a.height { // 2 for the top and bottom app padding
593 cursor = nil
594 }
595 }
596 activeView := a.dialog.ActiveModel()
597 if activeView != nil {
598 cursor = nil // Reset cursor if a dialog is active unless it implements util.Cursor
599 if v, ok := activeView.(util.Cursor); ok {
600 cursor = v.Cursor()
601 }
602 }
603
604 if a.completions.Open() && cursor != nil {
605 cmp := a.completions.View()
606 x, y := a.completions.Position()
607 layers = append(
608 layers,
609 lipgloss.NewLayer(cmp).X(x).Y(y),
610 )
611 }
612
613 canvas := lipgloss.NewCanvas(
614 layers...,
615 )
616
617 view.Layer = canvas
618 view.Cursor = cursor
619 if a.app != nil && a.app.CoderAgent != nil && a.app.CoderAgent.IsBusy() {
620 // HACK: use a random percentage to prevent ghostty from hiding it
621 // after a timeout.
622 view.ProgressBar = tea.NewProgressBar(tea.ProgressBarIndeterminate, rand.Intn(100))
623 }
624 return view
625}
626
627// New creates and initializes a new TUI application model.
628func New(app *app.App) tea.Model {
629 chatPage := chat.New(app)
630 keyMap := DefaultKeyMap()
631 keyMap.pageBindings = chatPage.Bindings()
632
633 model := &appModel{
634 currentPage: chat.ChatPageID,
635 app: app,
636 status: status.NewStatusCmp(),
637 loadedPages: make(map[page.PageID]bool),
638 keyMap: keyMap,
639
640 pages: map[page.PageID]util.Model{
641 chat.ChatPageID: chatPage,
642 },
643
644 dialog: dialogs.NewDialogCmp(),
645 completions: completions.New(),
646 }
647
648 return model
649}