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