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
174 // Model Switch
175 case models.ModelSelectedMsg:
176 config.Get().UpdatePreferredModel(msg.ModelType, msg.Model)
177
178 // Update the agent with the new model/provider configuration
179 if err := a.app.UpdateAgentModel(); err != nil {
180 return a, util.ReportError(fmt.Errorf("model changed to %s but failed to update agent: %v", msg.Model.Model, err))
181 }
182
183 modelTypeName := "large"
184 if msg.ModelType == config.SelectedModelTypeSmall {
185 modelTypeName = "small"
186 }
187 return a, util.ReportInfo(fmt.Sprintf("%s model changed to %s", modelTypeName, msg.Model.Model))
188
189 // File Picker
190 case chat.OpenFilePickerMsg:
191 if a.dialog.ActiveDialogID() == filepicker.FilePickerID {
192 // If the commands dialog is already open, close it
193 return a, util.CmdHandler(dialogs.CloseDialogMsg{})
194 }
195 return a, util.CmdHandler(dialogs.OpenDialogMsg{
196 Model: filepicker.NewFilePickerCmp(a.app.Config().WorkingDir()),
197 })
198 // Permissions
199 case pubsub.Event[permission.PermissionRequest]:
200 return a, util.CmdHandler(dialogs.OpenDialogMsg{
201 Model: permissions.NewPermissionDialogCmp(msg.Payload),
202 })
203 case permissions.PermissionResponseMsg:
204 switch msg.Action {
205 case permissions.PermissionAllow:
206 a.app.Permissions.Grant(msg.Permission)
207 case permissions.PermissionAllowForSession:
208 a.app.Permissions.GrantPersistent(msg.Permission)
209 case permissions.PermissionDeny:
210 a.app.Permissions.Deny(msg.Permission)
211 }
212 return a, nil
213 // Agent Events
214 case pubsub.Event[agent.AgentEvent]:
215 payload := msg.Payload
216
217 // Forward agent events to dialogs
218 if a.dialog.HasDialogs() && a.dialog.ActiveDialogID() == compact.CompactDialogID {
219 u, dialogCmd := a.dialog.Update(payload)
220 a.dialog = u.(dialogs.DialogCmp)
221 cmds = append(cmds, dialogCmd)
222 }
223
224 // Handle auto-compact logic
225 if payload.Done && payload.Type == agent.AgentEventTypeResponse && a.selectedSessionID != "" {
226 // Get current session to check token usage
227 session, err := a.app.Sessions.Get(context.Background(), a.selectedSessionID)
228 if err == nil {
229 model := a.app.CoderAgent.Model()
230 contextWindow := model.ContextWindow
231 tokens := session.CompletionTokens + session.PromptTokens
232 if (tokens >= int64(float64(contextWindow)*0.95)) && !config.Get().Options.DisableAutoSummarize { // Show compact confirmation dialog
233 cmds = append(cmds, util.CmdHandler(dialogs.OpenDialogMsg{
234 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, a.selectedSessionID, false),
235 }))
236 }
237 }
238 }
239
240 return a, tea.Batch(cmds...)
241 case splash.OnboardingCompleteMsg:
242 a.isConfigured = config.HasInitialDataConfig()
243 updated, pageCmd := a.pages[a.currentPage].Update(msg)
244 a.pages[a.currentPage] = updated.(util.Model)
245 cmds = append(cmds, pageCmd)
246 return a, tea.Batch(cmds...)
247 // Key Press Messages
248 case tea.KeyPressMsg:
249 return a, a.handleKeyPressMsg(msg)
250
251 case tea.PasteMsg:
252 if a.dialog.HasDialogs() {
253 u, dialogCmd := a.dialog.Update(msg)
254 a.dialog = u.(dialogs.DialogCmp)
255 cmds = append(cmds, dialogCmd)
256 } else {
257 updated, pageCmd := a.pages[a.currentPage].Update(msg)
258 a.pages[a.currentPage] = updated.(util.Model)
259 cmds = append(cmds, pageCmd)
260 }
261 return a, tea.Batch(cmds...)
262 }
263 s, _ := a.status.Update(msg)
264 a.status = s.(status.StatusCmp)
265 updated, cmd := a.pages[a.currentPage].Update(msg)
266 a.pages[a.currentPage] = updated.(util.Model)
267 if a.dialog.HasDialogs() {
268 u, dialogCmd := a.dialog.Update(msg)
269 a.dialog = u.(dialogs.DialogCmp)
270 cmds = append(cmds, dialogCmd)
271 }
272 cmds = append(cmds, cmd)
273 return a, tea.Batch(cmds...)
274}
275
276// handleWindowResize processes window resize events and updates all components.
277func (a *appModel) handleWindowResize(width, height int) tea.Cmd {
278 var cmds []tea.Cmd
279 if a.showingFullHelp {
280 height -= 5
281 } else {
282 height -= 2
283 }
284 a.width, a.height = width, height
285 // Update status bar
286 s, cmd := a.status.Update(tea.WindowSizeMsg{Width: width, Height: height})
287 a.status = s.(status.StatusCmp)
288 cmds = append(cmds, cmd)
289
290 // Update the current page
291 for p, page := range a.pages {
292 updated, pageCmd := page.Update(tea.WindowSizeMsg{Width: width, Height: height})
293 a.pages[p] = updated.(util.Model)
294 cmds = append(cmds, pageCmd)
295 }
296
297 // Update the dialogs
298 dialog, cmd := a.dialog.Update(tea.WindowSizeMsg{Width: width, Height: height})
299 a.dialog = dialog.(dialogs.DialogCmp)
300 cmds = append(cmds, cmd)
301
302 return tea.Batch(cmds...)
303}
304
305// handleKeyPressMsg processes keyboard input and routes to appropriate handlers.
306func (a *appModel) handleKeyPressMsg(msg tea.KeyPressMsg) tea.Cmd {
307 if a.completions.Open() {
308 // completions
309 keyMap := a.completions.KeyMap()
310 switch {
311 case key.Matches(msg, keyMap.Up), key.Matches(msg, keyMap.Down),
312 key.Matches(msg, keyMap.Select), key.Matches(msg, keyMap.Cancel),
313 key.Matches(msg, keyMap.UpInsert), key.Matches(msg, keyMap.DownInsert):
314 u, cmd := a.completions.Update(msg)
315 a.completions = u.(completions.Completions)
316 return cmd
317 }
318 }
319 switch {
320 // help
321 case key.Matches(msg, a.keyMap.Help):
322 a.status.ToggleFullHelp()
323 a.showingFullHelp = !a.showingFullHelp
324 return a.handleWindowResize(a.wWidth, a.wHeight)
325 // dialogs
326 case key.Matches(msg, a.keyMap.Quit):
327 if a.dialog.ActiveDialogID() == quit.QuitDialogID {
328 return tea.Quit
329 }
330 return util.CmdHandler(dialogs.OpenDialogMsg{
331 Model: quit.NewQuitDialog(),
332 })
333
334 case key.Matches(msg, a.keyMap.Commands):
335 // if the app is not configured show no commands
336 if !a.isConfigured {
337 return nil
338 }
339 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
340 return util.CmdHandler(dialogs.CloseDialogMsg{})
341 }
342 if a.dialog.HasDialogs() {
343 return nil
344 }
345 return util.CmdHandler(dialogs.OpenDialogMsg{
346 Model: commands.NewCommandDialog(a.selectedSessionID),
347 })
348 case key.Matches(msg, a.keyMap.Sessions):
349 // if the app is not configured show no sessions
350 if !a.isConfigured {
351 return nil
352 }
353 if a.dialog.ActiveDialogID() == sessions.SessionsDialogID {
354 return util.CmdHandler(dialogs.CloseDialogMsg{})
355 }
356 if a.dialog.HasDialogs() && a.dialog.ActiveDialogID() != commands.CommandsDialogID {
357 return nil
358 }
359 var cmds []tea.Cmd
360 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
361 // If the commands dialog is open, close it first
362 cmds = append(cmds, util.CmdHandler(dialogs.CloseDialogMsg{}))
363 }
364 cmds = append(cmds,
365 func() tea.Msg {
366 allSessions, _ := a.app.Sessions.List(context.Background())
367 return dialogs.OpenDialogMsg{
368 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
369 }
370 },
371 )
372 return tea.Sequence(cmds...)
373 default:
374 if a.dialog.HasDialogs() {
375 u, dialogCmd := a.dialog.Update(msg)
376 a.dialog = u.(dialogs.DialogCmp)
377 return dialogCmd
378 } else {
379 updated, cmd := a.pages[a.currentPage].Update(msg)
380 a.pages[a.currentPage] = updated.(util.Model)
381 return cmd
382 }
383 }
384}
385
386// moveToPage handles navigation between different pages in the application.
387func (a *appModel) moveToPage(pageID page.PageID) tea.Cmd {
388 if a.app.CoderAgent.IsBusy() {
389 // TODO: maybe remove this : For now we don't move to any page if the agent is busy
390 return util.ReportWarn("Agent is busy, please wait...")
391 }
392
393 var cmds []tea.Cmd
394 if _, ok := a.loadedPages[pageID]; !ok {
395 cmd := a.pages[pageID].Init()
396 cmds = append(cmds, cmd)
397 a.loadedPages[pageID] = true
398 }
399 a.previousPage = a.currentPage
400 a.currentPage = pageID
401 if sizable, ok := a.pages[a.currentPage].(layout.Sizeable); ok {
402 cmd := sizable.SetSize(a.width, a.height)
403 cmds = append(cmds, cmd)
404 }
405
406 return tea.Batch(cmds...)
407}
408
409// View renders the complete application interface including pages, dialogs, and overlays.
410func (a *appModel) View() tea.View {
411 var view tea.View
412 t := styles.CurrentTheme()
413 view.BackgroundColor = t.BgBase
414 if a.wWidth < 25 || a.wHeight < 15 {
415 view.Layer = lipgloss.NewCanvas(
416 lipgloss.NewLayer(
417 t.S().Base.Width(a.wWidth).Height(a.wHeight).
418 Align(lipgloss.Center, lipgloss.Center).
419 Render(
420 t.S().Base.
421 Padding(1, 4).
422 Foreground(t.White).
423 BorderStyle(lipgloss.RoundedBorder()).
424 BorderForeground(t.Primary).
425 Render("Window too small!"),
426 ),
427 ),
428 )
429 return view
430 }
431
432 page := a.pages[a.currentPage]
433 if withHelp, ok := page.(core.KeyMapHelp); ok {
434 a.status.SetKeyMap(withHelp.Help())
435 }
436 pageView := page.View()
437 components := []string{
438 pageView,
439 }
440 components = append(components, a.status.View())
441
442 appView := lipgloss.JoinVertical(lipgloss.Top, components...)
443 layers := []*lipgloss.Layer{
444 lipgloss.NewLayer(appView),
445 }
446 if a.dialog.HasDialogs() {
447 layers = append(
448 layers,
449 a.dialog.GetLayers()...,
450 )
451 }
452
453 var cursor *tea.Cursor
454 if v, ok := page.(util.Cursor); ok {
455 cursor = v.Cursor()
456 // Hide the cursor if it's positioned outside the textarea
457 statusHeight := a.height - strings.Count(pageView, "\n") + 1
458 if cursor != nil && cursor.Y+statusHeight+chat.EditorHeight-2 <= a.height { // 2 for the top and bottom app padding
459 cursor = nil
460 }
461 }
462 activeView := a.dialog.ActiveModel()
463 if activeView != nil {
464 cursor = nil // Reset cursor if a dialog is active unless it implements util.Cursor
465 if v, ok := activeView.(util.Cursor); ok {
466 cursor = v.Cursor()
467 }
468 }
469
470 if a.completions.Open() && cursor != nil {
471 cmp := a.completions.View()
472 x, y := a.completions.Position()
473 layers = append(
474 layers,
475 lipgloss.NewLayer(cmp).X(x).Y(y),
476 )
477 }
478
479 canvas := lipgloss.NewCanvas(
480 layers...,
481 )
482
483 view.Layer = canvas
484 view.Cursor = cursor
485 return view
486}
487
488// New creates and initializes a new TUI application model.
489func New(app *app.App) tea.Model {
490 chatPage := chat.New(app)
491 keyMap := DefaultKeyMap()
492 keyMap.pageBindings = chatPage.Bindings()
493
494 model := &appModel{
495 currentPage: chat.ChatPageID,
496 app: app,
497 status: status.NewStatusCmp(),
498 loadedPages: make(map[page.PageID]bool),
499 keyMap: keyMap,
500
501 pages: map[page.PageID]util.Model{
502 chat.ChatPageID: chatPage,
503 },
504
505 dialog: dialogs.NewDialogCmp(),
506 completions: completions.New(),
507 }
508
509 return model
510}