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