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 config.Get().UpdatePreferredModel(msg.ModelType, msg.Model)
184
185 // Update the agent with the new model/provider configuration
186 if err := a.app.UpdateAgentModel(); err != nil {
187 return a, util.ReportError(fmt.Errorf("model changed to %s but failed to update agent: %v", msg.Model.Model, err))
188 }
189
190 modelTypeName := "large"
191 if msg.ModelType == config.SelectedModelTypeSmall {
192 modelTypeName = "small"
193 }
194 return a, util.ReportInfo(fmt.Sprintf("%s model changed to %s", modelTypeName, msg.Model.Model))
195
196 // File Picker
197 case commands.OpenFilePickerMsg:
198 if a.dialog.ActiveDialogID() == filepicker.FilePickerID {
199 // If the commands dialog is already open, close it
200 return a, util.CmdHandler(dialogs.CloseDialogMsg{})
201 }
202 return a, util.CmdHandler(dialogs.OpenDialogMsg{
203 Model: filepicker.NewFilePickerCmp(a.app.Config().WorkingDir()),
204 })
205 // Permissions
206 case pubsub.Event[permission.PermissionNotification]:
207 // forward to page
208 updated, cmd := a.pages[a.currentPage].Update(msg)
209 a.pages[a.currentPage] = updated.(util.Model)
210 return a, cmd
211 case pubsub.Event[permission.PermissionRequest]:
212 return a, util.CmdHandler(dialogs.OpenDialogMsg{
213 Model: permissions.NewPermissionDialogCmp(msg.Payload),
214 })
215 case permissions.PermissionResponseMsg:
216 switch msg.Action {
217 case permissions.PermissionAllow:
218 a.app.Permissions.Grant(msg.Permission)
219 case permissions.PermissionAllowForSession:
220 a.app.Permissions.GrantPersistent(msg.Permission)
221 case permissions.PermissionDeny:
222 a.app.Permissions.Deny(msg.Permission)
223 }
224 return a, nil
225 // Agent Events
226 case pubsub.Event[agent.AgentEvent]:
227 payload := msg.Payload
228
229 // Forward agent events to dialogs
230 if a.dialog.HasDialogs() && a.dialog.ActiveDialogID() == compact.CompactDialogID {
231 u, dialogCmd := a.dialog.Update(payload)
232 a.dialog = u.(dialogs.DialogCmp)
233 cmds = append(cmds, dialogCmd)
234 }
235
236 // Handle auto-compact logic
237 if payload.Done && payload.Type == agent.AgentEventTypeResponse && a.selectedSessionID != "" {
238 // Get current session to check token usage
239 session, err := a.app.Sessions.Get(context.Background(), a.selectedSessionID)
240 if err == nil {
241 model := a.app.CoderAgent.Model()
242 contextWindow := model.ContextWindow
243 tokens := session.CompletionTokens + session.PromptTokens
244 if (tokens >= int64(float64(contextWindow)*0.95)) && !config.Get().Options.DisableAutoSummarize { // Show compact confirmation dialog
245 cmds = append(cmds, util.CmdHandler(dialogs.OpenDialogMsg{
246 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, a.selectedSessionID, false),
247 }))
248 }
249 }
250 }
251
252 return a, tea.Batch(cmds...)
253 case splash.OnboardingCompleteMsg:
254 a.isConfigured = config.HasInitialDataConfig()
255 updated, pageCmd := a.pages[a.currentPage].Update(msg)
256 a.pages[a.currentPage] = updated.(util.Model)
257 cmds = append(cmds, pageCmd)
258 return a, tea.Batch(cmds...)
259 // Key Press Messages
260 case tea.KeyPressMsg:
261 return a, a.handleKeyPressMsg(msg)
262
263 case tea.MouseWheelMsg:
264 if !a.dialog.HasDialogs() {
265 updated, pageCmd := a.pages[a.currentPage].Update(msg)
266 a.pages[a.currentPage] = updated.(util.Model)
267 cmds = append(cmds, pageCmd)
268 }
269 return a, tea.Batch(cmds...)
270 case tea.PasteMsg:
271 if a.dialog.HasDialogs() {
272 u, dialogCmd := a.dialog.Update(msg)
273 a.dialog = u.(dialogs.DialogCmp)
274 cmds = append(cmds, dialogCmd)
275 } else {
276 updated, pageCmd := a.pages[a.currentPage].Update(msg)
277 a.pages[a.currentPage] = updated.(util.Model)
278 cmds = append(cmds, pageCmd)
279 }
280 return a, tea.Batch(cmds...)
281 }
282 s, _ := a.status.Update(msg)
283 a.status = s.(status.StatusCmp)
284 updated, cmd := a.pages[a.currentPage].Update(msg)
285 a.pages[a.currentPage] = updated.(util.Model)
286 if a.dialog.HasDialogs() {
287 u, dialogCmd := a.dialog.Update(msg)
288 a.dialog = u.(dialogs.DialogCmp)
289 cmds = append(cmds, dialogCmd)
290 }
291 cmds = append(cmds, cmd)
292 return a, tea.Batch(cmds...)
293}
294
295// handleWindowResize processes window resize events and updates all components.
296func (a *appModel) handleWindowResize(width, height int) tea.Cmd {
297 var cmds []tea.Cmd
298 if a.showingFullHelp {
299 height -= 5
300 } else {
301 height -= 2
302 }
303 a.width, a.height = width, height
304 // Update status bar
305 s, cmd := a.status.Update(tea.WindowSizeMsg{Width: width, Height: height})
306 a.status = s.(status.StatusCmp)
307 cmds = append(cmds, cmd)
308
309 // Update the current page
310 for p, page := range a.pages {
311 updated, pageCmd := page.Update(tea.WindowSizeMsg{Width: width, Height: height})
312 a.pages[p] = updated.(util.Model)
313 cmds = append(cmds, pageCmd)
314 }
315
316 // Update the dialogs
317 dialog, cmd := a.dialog.Update(tea.WindowSizeMsg{Width: width, Height: height})
318 a.dialog = dialog.(dialogs.DialogCmp)
319 cmds = append(cmds, cmd)
320
321 return tea.Batch(cmds...)
322}
323
324// handleKeyPressMsg processes keyboard input and routes to appropriate handlers.
325func (a *appModel) handleKeyPressMsg(msg tea.KeyPressMsg) tea.Cmd {
326 if a.completions.Open() {
327 // completions
328 keyMap := a.completions.KeyMap()
329 switch {
330 case key.Matches(msg, keyMap.Up), key.Matches(msg, keyMap.Down),
331 key.Matches(msg, keyMap.Select), key.Matches(msg, keyMap.Cancel),
332 key.Matches(msg, keyMap.UpInsert), key.Matches(msg, keyMap.DownInsert):
333 u, cmd := a.completions.Update(msg)
334 a.completions = u.(completions.Completions)
335 return cmd
336 }
337 }
338 switch {
339 // help
340 case key.Matches(msg, a.keyMap.Help):
341 a.status.ToggleFullHelp()
342 a.showingFullHelp = !a.showingFullHelp
343 return a.handleWindowResize(a.wWidth, a.wHeight)
344 // dialogs
345 case key.Matches(msg, a.keyMap.Quit):
346 if a.dialog.ActiveDialogID() == quit.QuitDialogID {
347 return tea.Quit
348 }
349 return util.CmdHandler(dialogs.OpenDialogMsg{
350 Model: quit.NewQuitDialog(),
351 })
352
353 case key.Matches(msg, a.keyMap.Commands):
354 // if the app is not configured show no commands
355 if !a.isConfigured {
356 return nil
357 }
358 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
359 return util.CmdHandler(dialogs.CloseDialogMsg{})
360 }
361 if a.dialog.HasDialogs() {
362 return nil
363 }
364 return util.CmdHandler(dialogs.OpenDialogMsg{
365 Model: commands.NewCommandDialog(a.selectedSessionID),
366 })
367 case key.Matches(msg, a.keyMap.Sessions):
368 // if the app is not configured show no sessions
369 if !a.isConfigured {
370 return nil
371 }
372 if a.dialog.ActiveDialogID() == sessions.SessionsDialogID {
373 return util.CmdHandler(dialogs.CloseDialogMsg{})
374 }
375 if a.dialog.HasDialogs() && a.dialog.ActiveDialogID() != commands.CommandsDialogID {
376 return nil
377 }
378 var cmds []tea.Cmd
379 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
380 // If the commands dialog is open, close it first
381 cmds = append(cmds, util.CmdHandler(dialogs.CloseDialogMsg{}))
382 }
383 cmds = append(cmds,
384 func() tea.Msg {
385 allSessions, _ := a.app.Sessions.List(context.Background())
386 return dialogs.OpenDialogMsg{
387 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
388 }
389 },
390 )
391 return tea.Sequence(cmds...)
392 case key.Matches(msg, a.keyMap.Suspend):
393 if a.app.CoderAgent.IsBusy() {
394 return util.ReportWarn("Agent is busy, please wait...")
395 }
396 return tea.Suspend
397 default:
398 if a.dialog.HasDialogs() {
399 u, dialogCmd := a.dialog.Update(msg)
400 a.dialog = u.(dialogs.DialogCmp)
401 return dialogCmd
402 } else {
403 updated, cmd := a.pages[a.currentPage].Update(msg)
404 a.pages[a.currentPage] = updated.(util.Model)
405 return cmd
406 }
407 }
408}
409
410// moveToPage handles navigation between different pages in the application.
411func (a *appModel) moveToPage(pageID page.PageID) tea.Cmd {
412 if a.app.CoderAgent.IsBusy() {
413 // TODO: maybe remove this : For now we don't move to any page if the agent is busy
414 return util.ReportWarn("Agent is busy, please wait...")
415 }
416
417 var cmds []tea.Cmd
418 if _, ok := a.loadedPages[pageID]; !ok {
419 cmd := a.pages[pageID].Init()
420 cmds = append(cmds, cmd)
421 a.loadedPages[pageID] = true
422 }
423 a.previousPage = a.currentPage
424 a.currentPage = pageID
425 if sizable, ok := a.pages[a.currentPage].(layout.Sizeable); ok {
426 cmd := sizable.SetSize(a.width, a.height)
427 cmds = append(cmds, cmd)
428 }
429
430 return tea.Batch(cmds...)
431}
432
433// View renders the complete application interface including pages, dialogs, and overlays.
434func (a *appModel) View() tea.View {
435 var view tea.View
436 t := styles.CurrentTheme()
437 view.BackgroundColor = t.BgBase
438 if a.wWidth < 25 || a.wHeight < 15 {
439 view.Layer = lipgloss.NewCanvas(
440 lipgloss.NewLayer(
441 t.S().Base.Width(a.wWidth).Height(a.wHeight).
442 Align(lipgloss.Center, lipgloss.Center).
443 Render(
444 t.S().Base.
445 Padding(1, 4).
446 Foreground(t.White).
447 BorderStyle(lipgloss.RoundedBorder()).
448 BorderForeground(t.Primary).
449 Render("Window too small!"),
450 ),
451 ),
452 )
453 return view
454 }
455
456 page := a.pages[a.currentPage]
457 if withHelp, ok := page.(core.KeyMapHelp); ok {
458 a.status.SetKeyMap(withHelp.Help())
459 }
460 pageView := page.View()
461 components := []string{
462 pageView,
463 }
464 components = append(components, a.status.View())
465
466 appView := lipgloss.JoinVertical(lipgloss.Top, components...)
467 layers := []*lipgloss.Layer{
468 lipgloss.NewLayer(appView),
469 }
470 if a.dialog.HasDialogs() {
471 layers = append(
472 layers,
473 a.dialog.GetLayers()...,
474 )
475 }
476
477 var cursor *tea.Cursor
478 if v, ok := page.(util.Cursor); ok {
479 cursor = v.Cursor()
480 // Hide the cursor if it's positioned outside the textarea
481 statusHeight := a.height - strings.Count(pageView, "\n") + 1
482 if cursor != nil && cursor.Y+statusHeight+chat.EditorHeight-2 <= a.height { // 2 for the top and bottom app padding
483 cursor = nil
484 }
485 }
486 activeView := a.dialog.ActiveModel()
487 if activeView != nil {
488 cursor = nil // Reset cursor if a dialog is active unless it implements util.Cursor
489 if v, ok := activeView.(util.Cursor); ok {
490 cursor = v.Cursor()
491 }
492 }
493
494 if a.completions.Open() && cursor != nil {
495 cmp := a.completions.View()
496 x, y := a.completions.Position()
497 layers = append(
498 layers,
499 lipgloss.NewLayer(cmp).X(x).Y(y),
500 )
501 }
502
503 canvas := lipgloss.NewCanvas(
504 layers...,
505 )
506
507 view.Layer = canvas
508 view.Cursor = cursor
509 return view
510}
511
512// New creates and initializes a new TUI application model.
513func New(app *app.App) tea.Model {
514 chatPage := chat.New(app)
515 keyMap := DefaultKeyMap()
516 keyMap.pageBindings = chatPage.Bindings()
517
518 model := &appModel{
519 currentPage: chat.ChatPageID,
520 app: app,
521 status: status.NewStatusCmp(),
522 loadedPages: make(map[page.PageID]bool),
523 keyMap: keyMap,
524
525 pages: map[page.PageID]util.Model{
526 chat.ChatPageID: chatPage,
527 },
528
529 dialog: dialogs.NewDialogCmp(),
530 completions: completions.New(),
531 }
532
533 return model
534}