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 case commands.ShowMCPPromptArgumentsDialogMsg:
151 dialog := commands.NewMCPPromptArgumentsDialog(msg.PromptID, msg.PromptName)
152 if dialog == nil {
153 util.ReportWarn(fmt.Sprintf("Prompt %s not found", msg.PromptName))
154 return a, nil
155 }
156 return a, util.CmdHandler(
157 dialogs.OpenDialogMsg{
158 Model: dialog,
159 },
160 )
161 // Page change messages
162 case page.PageChangeMsg:
163 return a, a.moveToPage(msg.ID)
164
165 // Status Messages
166 case util.InfoMsg, util.ClearStatusMsg:
167 s, statusCmd := a.status.Update(msg)
168 a.status = s.(status.StatusCmp)
169 cmds = append(cmds, statusCmd)
170 return a, tea.Batch(cmds...)
171
172 // Session
173 case cmpChat.SessionSelectedMsg:
174 a.selectedSessionID = msg.ID
175 case cmpChat.SessionClearedMsg:
176 a.selectedSessionID = ""
177 // Commands
178 case commands.SwitchSessionsMsg:
179 return a, func() tea.Msg {
180 allSessions, _ := a.app.Sessions.List(context.Background())
181 return dialogs.OpenDialogMsg{
182 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
183 }
184 }
185
186 case commands.SwitchModelMsg:
187 return a, util.CmdHandler(
188 dialogs.OpenDialogMsg{
189 Model: models.NewModelDialogCmp(),
190 },
191 )
192 // Compact
193 case commands.CompactMsg:
194 return a, util.CmdHandler(dialogs.OpenDialogMsg{
195 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, msg.SessionID, true),
196 })
197 case commands.QuitMsg:
198 return a, util.CmdHandler(dialogs.OpenDialogMsg{
199 Model: quit.NewQuitDialog(),
200 })
201 case commands.ToggleYoloModeMsg:
202 a.app.Permissions.SetSkipRequests(!a.app.Permissions.SkipRequests())
203 case commands.ToggleHelpMsg:
204 a.status.ToggleFullHelp()
205 a.showingFullHelp = !a.showingFullHelp
206 return a, a.handleWindowResize(a.wWidth, a.wHeight)
207 // Model Switch
208 case models.ModelSelectedMsg:
209 if a.app.CoderAgent.IsBusy() {
210 return a, util.ReportWarn("Agent is busy, please wait...")
211 }
212
213 config.Get().UpdatePreferredModel(msg.ModelType, msg.Model)
214
215 // Update the agent with the new model/provider configuration
216 if err := a.app.UpdateAgentModel(); err != nil {
217 return a, util.ReportError(fmt.Errorf("model changed to %s but failed to update agent: %v", msg.Model.Model, err))
218 }
219
220 modelTypeName := "large"
221 if msg.ModelType == config.SelectedModelTypeSmall {
222 modelTypeName = "small"
223 }
224 return a, util.ReportInfo(fmt.Sprintf("%s model changed to %s", modelTypeName, msg.Model.Model))
225
226 // File Picker
227 case commands.OpenFilePickerMsg:
228 event.FilePickerOpened()
229
230 if a.dialog.ActiveDialogID() == filepicker.FilePickerID {
231 // If the commands dialog is already open, close it
232 return a, util.CmdHandler(dialogs.CloseDialogMsg{})
233 }
234 return a, util.CmdHandler(dialogs.OpenDialogMsg{
235 Model: filepicker.NewFilePickerCmp(a.app.Config().WorkingDir()),
236 })
237 // Permissions
238 case pubsub.Event[permission.PermissionNotification]:
239 item, ok := a.pages[a.currentPage]
240 if !ok {
241 return a, nil
242 }
243
244 // Forward to view.
245 updated, itemCmd := item.Update(msg)
246 if model, ok := updated.(util.Model); ok {
247 a.pages[a.currentPage] = model
248 }
249
250 return a, itemCmd
251 case pubsub.Event[permission.PermissionRequest]:
252 return a, util.CmdHandler(dialogs.OpenDialogMsg{
253 Model: permissions.NewPermissionDialogCmp(msg.Payload, &permissions.Options{
254 DiffMode: config.Get().Options.TUI.DiffMode,
255 }),
256 })
257 case permissions.PermissionResponseMsg:
258 switch msg.Action {
259 case permissions.PermissionAllow:
260 a.app.Permissions.Grant(msg.Permission)
261 case permissions.PermissionAllowForSession:
262 a.app.Permissions.GrantPersistent(msg.Permission)
263 case permissions.PermissionDeny:
264 a.app.Permissions.Deny(msg.Permission)
265 }
266 return a, nil
267 // Agent Events
268 case pubsub.Event[agent.AgentEvent]:
269 payload := msg.Payload
270
271 // Forward agent events to dialogs
272 if a.dialog.HasDialogs() && a.dialog.ActiveDialogID() == compact.CompactDialogID {
273 u, dialogCmd := a.dialog.Update(payload)
274 if model, ok := u.(dialogs.DialogCmp); ok {
275 a.dialog = model
276 }
277
278 cmds = append(cmds, dialogCmd)
279 }
280
281 // Handle auto-compact logic
282 if payload.Done && payload.Type == agent.AgentEventTypeResponse && a.selectedSessionID != "" {
283 // Get current session to check token usage
284 session, err := a.app.Sessions.Get(context.Background(), a.selectedSessionID)
285 if err == nil {
286 model := a.app.CoderAgent.Model()
287 contextWindow := model.ContextWindow
288 tokens := session.CompletionTokens + session.PromptTokens
289 if (tokens >= int64(float64(contextWindow)*0.95)) && !config.Get().Options.DisableAutoSummarize { // Show compact confirmation dialog
290 cmds = append(cmds, util.CmdHandler(dialogs.OpenDialogMsg{
291 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, a.selectedSessionID, false),
292 }))
293 }
294 }
295 }
296
297 return a, tea.Batch(cmds...)
298 case splash.OnboardingCompleteMsg:
299 item, ok := a.pages[a.currentPage]
300 if !ok {
301 return a, nil
302 }
303
304 a.isConfigured = config.HasInitialDataConfig()
305 updated, pageCmd := item.Update(msg)
306 if model, ok := updated.(util.Model); ok {
307 a.pages[a.currentPage] = model
308 }
309
310 cmds = append(cmds, pageCmd)
311 return a, tea.Batch(cmds...)
312
313 case tea.KeyPressMsg:
314 return a, a.handleKeyPressMsg(msg)
315
316 case tea.MouseWheelMsg:
317 if a.dialog.HasDialogs() {
318 u, dialogCmd := a.dialog.Update(msg)
319 a.dialog = u.(dialogs.DialogCmp)
320 cmds = append(cmds, dialogCmd)
321 } else {
322 item, ok := a.pages[a.currentPage]
323 if !ok {
324 return a, nil
325 }
326
327 updated, pageCmd := item.Update(msg)
328 if model, ok := updated.(util.Model); ok {
329 a.pages[a.currentPage] = model
330 }
331
332 cmds = append(cmds, pageCmd)
333 }
334 return a, tea.Batch(cmds...)
335 case tea.PasteMsg:
336 if a.dialog.HasDialogs() {
337 u, dialogCmd := a.dialog.Update(msg)
338 if model, ok := u.(dialogs.DialogCmp); ok {
339 a.dialog = model
340 }
341
342 cmds = append(cmds, dialogCmd)
343 } else {
344 item, ok := a.pages[a.currentPage]
345 if !ok {
346 return a, nil
347 }
348
349 updated, pageCmd := item.Update(msg)
350 if model, ok := updated.(util.Model); ok {
351 a.pages[a.currentPage] = model
352 }
353
354 cmds = append(cmds, pageCmd)
355 }
356 return a, tea.Batch(cmds...)
357 }
358 s, _ := a.status.Update(msg)
359 a.status = s.(status.StatusCmp)
360
361 item, ok := a.pages[a.currentPage]
362 if !ok {
363 return a, nil
364 }
365
366 updated, cmd := item.Update(msg)
367 if model, ok := updated.(util.Model); ok {
368 a.pages[a.currentPage] = model
369 }
370
371 if a.dialog.HasDialogs() {
372 u, dialogCmd := a.dialog.Update(msg)
373 if model, ok := u.(dialogs.DialogCmp); ok {
374 a.dialog = model
375 }
376
377 cmds = append(cmds, dialogCmd)
378 }
379 cmds = append(cmds, cmd)
380 return a, tea.Batch(cmds...)
381}
382
383// handleWindowResize processes window resize events and updates all components.
384func (a *appModel) handleWindowResize(width, height int) tea.Cmd {
385 var cmds []tea.Cmd
386
387 // TODO: clean up these magic numbers.
388 if a.showingFullHelp {
389 height -= 5
390 } else {
391 height -= 2
392 }
393
394 a.width, a.height = width, height
395 // Update status bar
396 s, cmd := a.status.Update(tea.WindowSizeMsg{Width: width, Height: height})
397 if model, ok := s.(status.StatusCmp); ok {
398 a.status = model
399 }
400 cmds = append(cmds, cmd)
401
402 // Update the current view.
403 for p, page := range a.pages {
404 updated, pageCmd := page.Update(tea.WindowSizeMsg{Width: width, Height: height})
405 if model, ok := updated.(util.Model); ok {
406 a.pages[p] = model
407 }
408
409 cmds = append(cmds, pageCmd)
410 }
411
412 // Update the dialogs
413 dialog, cmd := a.dialog.Update(tea.WindowSizeMsg{Width: width, Height: height})
414 if model, ok := dialog.(dialogs.DialogCmp); ok {
415 a.dialog = model
416 }
417
418 cmds = append(cmds, cmd)
419
420 return tea.Batch(cmds...)
421}
422
423// handleKeyPressMsg processes keyboard input and routes to appropriate handlers.
424func (a *appModel) handleKeyPressMsg(msg tea.KeyPressMsg) tea.Cmd {
425 // Check this first as the user should be able to quit no matter what.
426 if key.Matches(msg, a.keyMap.Quit) {
427 if a.dialog.ActiveDialogID() == quit.QuitDialogID {
428 return tea.Quit
429 }
430 return util.CmdHandler(dialogs.OpenDialogMsg{
431 Model: quit.NewQuitDialog(),
432 })
433 }
434
435 if a.completions.Open() {
436 // completions
437 keyMap := a.completions.KeyMap()
438 switch {
439 case key.Matches(msg, keyMap.Up), key.Matches(msg, keyMap.Down),
440 key.Matches(msg, keyMap.Select), key.Matches(msg, keyMap.Cancel),
441 key.Matches(msg, keyMap.UpInsert), key.Matches(msg, keyMap.DownInsert):
442 u, cmd := a.completions.Update(msg)
443 a.completions = u.(completions.Completions)
444 return cmd
445 }
446 }
447 if a.dialog.HasDialogs() {
448 u, dialogCmd := a.dialog.Update(msg)
449 a.dialog = u.(dialogs.DialogCmp)
450 return dialogCmd
451 }
452 switch {
453 // help
454 case key.Matches(msg, a.keyMap.Help):
455 a.status.ToggleFullHelp()
456 a.showingFullHelp = !a.showingFullHelp
457 return a.handleWindowResize(a.wWidth, a.wHeight)
458 // dialogs
459 case key.Matches(msg, a.keyMap.Commands):
460 // if the app is not configured show no commands
461 if !a.isConfigured {
462 return nil
463 }
464 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
465 return util.CmdHandler(dialogs.CloseDialogMsg{})
466 }
467 if a.dialog.HasDialogs() {
468 return nil
469 }
470 return util.CmdHandler(dialogs.OpenDialogMsg{
471 Model: commands.NewCommandDialog(a.selectedSessionID),
472 })
473 case key.Matches(msg, a.keyMap.Sessions):
474 // if the app is not configured show no sessions
475 if !a.isConfigured {
476 return nil
477 }
478 if a.dialog.ActiveDialogID() == sessions.SessionsDialogID {
479 return util.CmdHandler(dialogs.CloseDialogMsg{})
480 }
481 if a.dialog.HasDialogs() && a.dialog.ActiveDialogID() != commands.CommandsDialogID {
482 return nil
483 }
484 var cmds []tea.Cmd
485 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
486 // If the commands dialog is open, close it first
487 cmds = append(cmds, util.CmdHandler(dialogs.CloseDialogMsg{}))
488 }
489 cmds = append(cmds,
490 func() tea.Msg {
491 allSessions, _ := a.app.Sessions.List(context.Background())
492 return dialogs.OpenDialogMsg{
493 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
494 }
495 },
496 )
497 return tea.Sequence(cmds...)
498 case key.Matches(msg, a.keyMap.Suspend):
499 if a.app.CoderAgent != nil && a.app.CoderAgent.IsBusy() {
500 return util.ReportWarn("Agent is busy, please wait...")
501 }
502 return tea.Suspend
503 default:
504 item, ok := a.pages[a.currentPage]
505 if !ok {
506 return nil
507 }
508
509 updated, cmd := item.Update(msg)
510 if model, ok := updated.(util.Model); ok {
511 a.pages[a.currentPage] = model
512 }
513 return cmd
514 }
515}
516
517// moveToPage handles navigation between different pages in the application.
518func (a *appModel) moveToPage(pageID page.PageID) tea.Cmd {
519 if a.app.CoderAgent.IsBusy() {
520 // TODO: maybe remove this : For now we don't move to any page if the agent is busy
521 return util.ReportWarn("Agent is busy, please wait...")
522 }
523
524 var cmds []tea.Cmd
525 if _, ok := a.loadedPages[pageID]; !ok {
526 cmd := a.pages[pageID].Init()
527 cmds = append(cmds, cmd)
528 a.loadedPages[pageID] = true
529 }
530 a.previousPage = a.currentPage
531 a.currentPage = pageID
532 if sizable, ok := a.pages[a.currentPage].(layout.Sizeable); ok {
533 cmd := sizable.SetSize(a.width, a.height)
534 cmds = append(cmds, cmd)
535 }
536
537 return tea.Batch(cmds...)
538}
539
540// View renders the complete application interface including pages, dialogs, and overlays.
541func (a *appModel) View() tea.View {
542 var view tea.View
543 t := styles.CurrentTheme()
544 view.BackgroundColor = t.BgBase
545 if a.wWidth < 25 || a.wHeight < 15 {
546 view.Layer = lipgloss.NewCanvas(
547 lipgloss.NewLayer(
548 t.S().Base.Width(a.wWidth).Height(a.wHeight).
549 Align(lipgloss.Center, lipgloss.Center).
550 Render(
551 t.S().Base.
552 Padding(1, 4).
553 Foreground(t.White).
554 BorderStyle(lipgloss.RoundedBorder()).
555 BorderForeground(t.Primary).
556 Render("Window too small!"),
557 ),
558 ),
559 )
560 return view
561 }
562
563 page := a.pages[a.currentPage]
564 if withHelp, ok := page.(core.KeyMapHelp); ok {
565 a.status.SetKeyMap(withHelp.Help())
566 }
567 pageView := page.View()
568 components := []string{
569 pageView,
570 }
571 components = append(components, a.status.View())
572
573 appView := lipgloss.JoinVertical(lipgloss.Top, components...)
574 layers := []*lipgloss.Layer{
575 lipgloss.NewLayer(appView),
576 }
577 if a.dialog.HasDialogs() {
578 layers = append(
579 layers,
580 a.dialog.GetLayers()...,
581 )
582 }
583
584 var cursor *tea.Cursor
585 if v, ok := page.(util.Cursor); ok {
586 cursor = v.Cursor()
587 // Hide the cursor if it's positioned outside the textarea
588 statusHeight := a.height - strings.Count(pageView, "\n") + 1
589 if cursor != nil && cursor.Y+statusHeight+chat.EditorHeight-2 <= a.height { // 2 for the top and bottom app padding
590 cursor = nil
591 }
592 }
593 activeView := a.dialog.ActiveModel()
594 if activeView != nil {
595 cursor = nil // Reset cursor if a dialog is active unless it implements util.Cursor
596 if v, ok := activeView.(util.Cursor); ok {
597 cursor = v.Cursor()
598 }
599 }
600
601 if a.completions.Open() && cursor != nil {
602 cmp := a.completions.View()
603 x, y := a.completions.Position()
604 layers = append(
605 layers,
606 lipgloss.NewLayer(cmp).X(x).Y(y),
607 )
608 }
609
610 canvas := lipgloss.NewCanvas(
611 layers...,
612 )
613
614 view.Layer = canvas
615 view.Cursor = cursor
616 view.ProgressBar = tea.NewProgressBar(tea.ProgressBarNone, 0)
617 if a.app.CoderAgent.IsBusy() {
618 // use a random percentage to prevent the ghostty from hiding it after
619 // a timeout.
620 view.ProgressBar = tea.NewProgressBar(tea.ProgressBarIndeterminate, rand.Intn(100))
621 }
622 return view
623}
624
625// New creates and initializes a new TUI application model.
626func New(app *app.App) tea.Model {
627 chatPage := chat.New(app)
628 keyMap := DefaultKeyMap()
629 keyMap.pageBindings = chatPage.Bindings()
630
631 model := &appModel{
632 currentPage: chat.ChatPageID,
633 app: app,
634 status: status.NewStatusCmp(),
635 loadedPages: make(map[page.PageID]bool),
636 keyMap: keyMap,
637
638 pages: map[page.PageID]util.Model{
639 chat.ChatPageID: chatPage,
640 },
641
642 dialog: dialogs.NewDialogCmp(),
643 completions: completions.New(),
644 }
645
646 return model
647}