1package tui
2
3import (
4 "context"
5 "fmt"
6
7 "github.com/charmbracelet/bubbles/v2/key"
8 tea "github.com/charmbracelet/bubbletea/v2"
9 "github.com/charmbracelet/crush/internal/app"
10 "github.com/charmbracelet/crush/internal/config"
11 "github.com/charmbracelet/crush/internal/llm/agent"
12 "github.com/charmbracelet/crush/internal/logging"
13 "github.com/charmbracelet/crush/internal/permission"
14 "github.com/charmbracelet/crush/internal/pubsub"
15 cmpChat "github.com/charmbracelet/crush/internal/tui/components/chat"
16 "github.com/charmbracelet/crush/internal/tui/components/completions"
17 "github.com/charmbracelet/crush/internal/tui/components/core/layout"
18 "github.com/charmbracelet/crush/internal/tui/components/core/status"
19 "github.com/charmbracelet/crush/internal/tui/components/dialogs"
20 "github.com/charmbracelet/crush/internal/tui/components/dialogs/commands"
21 "github.com/charmbracelet/crush/internal/tui/components/dialogs/compact"
22 "github.com/charmbracelet/crush/internal/tui/components/dialogs/filepicker"
23 initDialog "github.com/charmbracelet/crush/internal/tui/components/dialogs/init"
24 "github.com/charmbracelet/crush/internal/tui/components/dialogs/models"
25 "github.com/charmbracelet/crush/internal/tui/components/dialogs/permissions"
26 "github.com/charmbracelet/crush/internal/tui/components/dialogs/quit"
27 "github.com/charmbracelet/crush/internal/tui/components/dialogs/sessions"
28 "github.com/charmbracelet/crush/internal/tui/page"
29 "github.com/charmbracelet/crush/internal/tui/page/chat"
30 "github.com/charmbracelet/crush/internal/tui/page/logs"
31 "github.com/charmbracelet/crush/internal/tui/styles"
32 "github.com/charmbracelet/crush/internal/tui/util"
33 "github.com/charmbracelet/lipgloss/v2"
34)
35
36// appModel represents the main application model that manages pages, dialogs, and UI state.
37type appModel struct {
38 wWidth, wHeight int // Window dimensions
39 width, height int
40 keyMap KeyMap
41
42 currentPage page.PageID
43 previousPage page.PageID
44 pages map[page.PageID]util.Model
45 loadedPages map[page.PageID]bool
46
47 // Status
48 status status.StatusCmp
49 showingFullHelp bool
50
51 app *app.App
52
53 dialog dialogs.DialogCmp
54 completions completions.Completions
55
56 // Chat Page Specific
57 selectedSessionID string // The ID of the currently selected session
58}
59
60// Init initializes the application model and returns initial commands.
61func (a appModel) Init() tea.Cmd {
62 var cmds []tea.Cmd
63 cmd := a.pages[a.currentPage].Init()
64 cmds = append(cmds, cmd)
65 a.loadedPages[a.currentPage] = true
66
67 cmd = a.status.Init()
68 cmds = append(cmds, cmd)
69
70 // Check if we should show the init dialog
71 cmds = append(cmds, func() tea.Msg {
72 shouldShow, err := config.ProjectNeedsInitialization()
73 if err != nil {
74 return util.InfoMsg{
75 Type: util.InfoTypeError,
76 Msg: "Failed to check init status: " + err.Error(),
77 }
78 }
79 if shouldShow {
80 return dialogs.OpenDialogMsg{
81 Model: initDialog.NewInitDialogCmp(),
82 }
83 }
84 return nil
85 })
86
87 // Enable mouse support.
88 cmds = append(cmds, tea.EnableMouseAllMotion)
89
90 return tea.Batch(cmds...)
91}
92
93// Update handles incoming messages and updates the application state.
94func (a *appModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
95 var cmds []tea.Cmd
96 var cmd tea.Cmd
97
98 switch msg := msg.(type) {
99 case tea.KeyboardEnhancementsMsg:
100 return a, nil
101 case tea.WindowSizeMsg:
102 return a, a.handleWindowResize(msg.Width, msg.Height)
103
104 // Completions messages
105 case completions.OpenCompletionsMsg, completions.FilterCompletionsMsg, completions.CloseCompletionsMsg:
106 u, completionCmd := a.completions.Update(msg)
107 a.completions = u.(completions.Completions)
108 return a, completionCmd
109
110 // Dialog messages
111 case dialogs.OpenDialogMsg, dialogs.CloseDialogMsg:
112 u, dialogCmd := a.dialog.Update(msg)
113 a.dialog = u.(dialogs.DialogCmp)
114 return a, dialogCmd
115 case commands.ShowArgumentsDialogMsg:
116 return a, util.CmdHandler(
117 dialogs.OpenDialogMsg{
118 Model: commands.NewCommandArgumentsDialog(
119 msg.CommandID,
120 msg.Content,
121 msg.ArgNames,
122 ),
123 },
124 )
125 // Page change messages
126 case page.PageChangeMsg:
127 return a, a.moveToPage(msg.ID)
128
129 // Status Messages
130 case util.InfoMsg, util.ClearStatusMsg:
131 s, statusCmd := a.status.Update(msg)
132 a.status = s.(status.StatusCmp)
133 cmds = append(cmds, statusCmd)
134 return a, tea.Batch(cmds...)
135
136 // Session
137 case cmpChat.SessionSelectedMsg:
138 a.selectedSessionID = msg.ID
139 case cmpChat.SessionClearedMsg:
140 a.selectedSessionID = ""
141 // Logs
142 case pubsub.Event[logging.LogMessage]:
143 // Send to the status component
144 s, statusCmd := a.status.Update(msg)
145 a.status = s.(status.StatusCmp)
146 cmds = append(cmds, statusCmd)
147
148 // If the current page is logs, update the logs view
149 if a.currentPage == logs.LogsPage {
150 updated, pageCmd := a.pages[a.currentPage].Update(msg)
151 a.pages[a.currentPage] = updated.(util.Model)
152 cmds = append(cmds, pageCmd)
153 }
154 return a, tea.Batch(cmds...)
155 // Commands
156 case commands.SwitchSessionsMsg:
157 return a, func() tea.Msg {
158 allSessions, _ := a.app.Sessions.List(context.Background())
159 return dialogs.OpenDialogMsg{
160 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
161 }
162 }
163
164 case commands.SwitchModelMsg:
165 return a, util.CmdHandler(
166 dialogs.OpenDialogMsg{
167 Model: models.NewModelDialogCmp(),
168 },
169 )
170 // Compact
171 case commands.CompactMsg:
172 return a, util.CmdHandler(dialogs.OpenDialogMsg{
173 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, msg.SessionID, true),
174 })
175
176 // Model Switch
177 case models.ModelSelectedMsg:
178 config.UpdatePreferredModel(msg.ModelType, msg.Model)
179
180 // Update the agent with the new model/provider configuration
181 if err := a.app.UpdateAgentModel(); err != nil {
182 logging.ErrorPersist(fmt.Sprintf("Failed to update agent model: %v", err))
183 return a, util.ReportError(fmt.Errorf("model changed to %s but failed to update agent: %v", msg.Model.ModelID, err))
184 }
185
186 modelTypeName := "large"
187 if msg.ModelType == config.SmallModel {
188 modelTypeName = "small"
189 }
190 return a, util.ReportInfo(fmt.Sprintf("%s model changed to %s", modelTypeName, msg.Model.ModelID))
191
192 // File Picker
193 case chat.OpenFilePickerMsg:
194 if a.dialog.ActiveDialogID() == filepicker.FilePickerID {
195 // If the commands dialog is already open, close it
196 return a, util.CmdHandler(dialogs.CloseDialogMsg{})
197 }
198 return a, util.CmdHandler(dialogs.OpenDialogMsg{
199 Model: filepicker.NewFilePickerCmp(),
200 })
201 // Permissions
202 case pubsub.Event[permission.PermissionRequest]:
203 return a, util.CmdHandler(dialogs.OpenDialogMsg{
204 Model: permissions.NewPermissionDialogCmp(msg.Payload),
205 })
206 case permissions.PermissionResponseMsg:
207 switch msg.Action {
208 case permissions.PermissionAllow:
209 a.app.Permissions.Grant(msg.Permission)
210 case permissions.PermissionAllowForSession:
211 a.app.Permissions.GrantPersistent(msg.Permission)
212 case permissions.PermissionDeny:
213 a.app.Permissions.Deny(msg.Permission)
214 }
215 return a, nil
216 // Agent Events
217 case pubsub.Event[agent.AgentEvent]:
218 payload := msg.Payload
219
220 // Forward agent events to dialogs
221 if a.dialog.HasDialogs() && a.dialog.ActiveDialogID() == compact.CompactDialogID {
222 u, dialogCmd := a.dialog.Update(payload)
223 a.dialog = u.(dialogs.DialogCmp)
224 cmds = append(cmds, dialogCmd)
225 }
226
227 // Handle auto-compact logic
228 if payload.Done && payload.Type == agent.AgentEventTypeResponse && a.selectedSessionID != "" {
229 // Get current session to check token usage
230 session, err := a.app.Sessions.Get(context.Background(), a.selectedSessionID)
231 if err == nil {
232 model := a.app.CoderAgent.Model()
233 contextWindow := model.ContextWindow
234 usedTokens := session.CompletionTokens + session.PromptTokens
235 remainingTokens := contextWindow - usedTokens
236
237 // Get effective max tokens for this agent (considering overrides)
238 maxTokens := a.app.CoderAgent.EffectiveMaxTokens()
239
240 // Apply 10% margin to max tokens
241 maxTokensWithMargin := int64(float64(maxTokens) * 1.1)
242
243 // Trigger auto-summarize if remaining tokens < max tokens + 10% margin
244 // Also ensure we have a reasonable minimum threshold to avoid too-frequent summaries
245 minThreshold := int64(1000) // Minimum 1000 tokens remaining before triggering
246 if maxTokensWithMargin < minThreshold {
247 maxTokensWithMargin = minThreshold
248 }
249
250 if remainingTokens < maxTokensWithMargin && !config.Get().Options.DisableAutoSummarize {
251 // Show compact confirmation dialog
252 cmds = append(cmds, util.CmdHandler(dialogs.OpenDialogMsg{
253 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, a.selectedSessionID, false),
254 }))
255 }
256 }
257 }
258
259 return a, tea.Batch(cmds...)
260 // Key Press Messages
261 case tea.KeyPressMsg:
262 return a, a.handleKeyPressMsg(msg)
263 }
264 s, _ := a.status.Update(msg)
265 a.status = s.(status.StatusCmp)
266 updated, cmd := a.pages[a.currentPage].Update(msg)
267 a.pages[a.currentPage] = updated.(util.Model)
268 if a.dialog.HasDialogs() {
269 u, dialogCmd := a.dialog.Update(msg)
270 a.dialog = u.(dialogs.DialogCmp)
271 cmds = append(cmds, dialogCmd)
272 }
273 cmds = append(cmds, cmd)
274 return a, tea.Batch(cmds...)
275}
276
277// handleWindowResize processes window resize events and updates all components.
278func (a *appModel) handleWindowResize(width, height int) tea.Cmd {
279 var cmds []tea.Cmd
280 a.wWidth, a.wHeight = width, height
281 if a.showingFullHelp {
282 height -= 4
283 } else {
284 height -= 2
285 }
286 a.width, a.height = width, height
287 // Update status bar
288 s, cmd := a.status.Update(tea.WindowSizeMsg{Width: width, Height: height})
289 a.status = s.(status.StatusCmp)
290 cmds = append(cmds, cmd)
291
292 // Update the current page
293 for p, page := range a.pages {
294 updated, pageCmd := page.Update(tea.WindowSizeMsg{Width: width, Height: height})
295 a.pages[p] = updated.(util.Model)
296 cmds = append(cmds, pageCmd)
297 }
298
299 // Update the dialogs
300 dialog, cmd := a.dialog.Update(tea.WindowSizeMsg{Width: width, Height: height})
301 a.dialog = dialog.(dialogs.DialogCmp)
302 cmds = append(cmds, cmd)
303
304 return tea.Batch(cmds...)
305}
306
307// handleKeyPressMsg processes keyboard input and routes to appropriate handlers.
308func (a *appModel) handleKeyPressMsg(msg tea.KeyPressMsg) tea.Cmd {
309 switch {
310 // completions
311 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Up):
312 u, cmd := a.completions.Update(msg)
313 a.completions = u.(completions.Completions)
314 return cmd
315
316 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Down):
317 u, cmd := a.completions.Update(msg)
318 a.completions = u.(completions.Completions)
319 return cmd
320 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Select):
321 u, cmd := a.completions.Update(msg)
322 a.completions = u.(completions.Completions)
323 return cmd
324 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Cancel):
325 u, cmd := a.completions.Update(msg)
326 a.completions = u.(completions.Completions)
327 return cmd
328 // help
329 case key.Matches(msg, a.keyMap.Help):
330 a.status.ToggleFullHelp()
331 a.showingFullHelp = !a.showingFullHelp
332 return a.handleWindowResize(a.wWidth, a.wHeight)
333 // dialogs
334 case key.Matches(msg, a.keyMap.Quit):
335 if a.dialog.ActiveDialogID() == quit.QuitDialogID {
336 // if the quit dialog is already open, close the app
337 return tea.Quit
338 }
339 return util.CmdHandler(dialogs.OpenDialogMsg{
340 Model: quit.NewQuitDialog(),
341 })
342
343 case key.Matches(msg, a.keyMap.Commands):
344 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
345 // If the commands dialog is already open, close it
346 return util.CmdHandler(dialogs.CloseDialogMsg{})
347 }
348 return util.CmdHandler(dialogs.OpenDialogMsg{
349 Model: commands.NewCommandDialog(a.selectedSessionID),
350 })
351 case key.Matches(msg, a.keyMap.Sessions):
352 if a.dialog.ActiveDialogID() == sessions.SessionsDialogID {
353 // If the sessions dialog is already open, close it
354 return util.CmdHandler(dialogs.CloseDialogMsg{})
355 }
356 var cmds []tea.Cmd
357 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
358 // If the commands dialog is open, close it first
359 cmds = append(cmds, util.CmdHandler(dialogs.CloseDialogMsg{}))
360 }
361 cmds = append(cmds,
362 func() tea.Msg {
363 allSessions, _ := a.app.Sessions.List(context.Background())
364 return dialogs.OpenDialogMsg{
365 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
366 }
367 },
368 )
369 return tea.Sequence(cmds...)
370 // Page navigation
371 case key.Matches(msg, a.keyMap.Logs):
372 return a.moveToPage(logs.LogsPage)
373
374 default:
375 if a.dialog.HasDialogs() {
376 u, dialogCmd := a.dialog.Update(msg)
377 a.dialog = u.(dialogs.DialogCmp)
378 return dialogCmd
379 } else {
380 updated, cmd := a.pages[a.currentPage].Update(msg)
381 a.pages[a.currentPage] = updated.(util.Model)
382 return cmd
383 }
384 }
385}
386
387// moveToPage handles navigation between different pages in the application.
388func (a *appModel) moveToPage(pageID page.PageID) tea.Cmd {
389 if a.app.CoderAgent.IsBusy() {
390 // TODO: maybe remove this : For now we don't move to any page if the agent is busy
391 return util.ReportWarn("Agent is busy, please wait...")
392 }
393
394 var cmds []tea.Cmd
395 if _, ok := a.loadedPages[pageID]; !ok {
396 cmd := a.pages[pageID].Init()
397 cmds = append(cmds, cmd)
398 a.loadedPages[pageID] = true
399 }
400 a.previousPage = a.currentPage
401 a.currentPage = pageID
402 if sizable, ok := a.pages[a.currentPage].(layout.Sizeable); ok {
403 cmd := sizable.SetSize(a.width, a.height)
404 cmds = append(cmds, cmd)
405 }
406
407 return tea.Batch(cmds...)
408}
409
410// View renders the complete application interface including pages, dialogs, and overlays.
411func (a *appModel) View() tea.View {
412 page := a.pages[a.currentPage]
413 if withHelp, ok := page.(layout.Help); ok {
414 a.keyMap.pageBindings = withHelp.Bindings()
415 }
416 a.status.SetKeyMap(a.keyMap)
417 pageView := page.View()
418 components := []string{
419 pageView,
420 }
421 components = append(components, a.status.View())
422
423 appView := lipgloss.JoinVertical(lipgloss.Top, components...)
424 layers := []*lipgloss.Layer{
425 lipgloss.NewLayer(appView),
426 }
427 if a.dialog.HasDialogs() {
428 layers = append(
429 layers,
430 a.dialog.GetLayers()...,
431 )
432 }
433
434 var cursor *tea.Cursor
435 if v, ok := page.(util.Cursor); ok {
436 cursor = v.Cursor()
437 }
438 activeView := a.dialog.ActiveModel()
439 if activeView != nil {
440 cursor = nil // Reset cursor if a dialog is active unless it implements util.Cursor
441 if v, ok := activeView.(util.Cursor); ok {
442 cursor = v.Cursor()
443 }
444 }
445
446 if a.completions.Open() && cursor != nil {
447 cmp := a.completions.View()
448 x, y := a.completions.Position()
449 layers = append(
450 layers,
451 lipgloss.NewLayer(cmp).X(x).Y(y),
452 )
453 }
454
455 canvas := lipgloss.NewCanvas(
456 layers...,
457 )
458
459 var view tea.View
460 t := styles.CurrentTheme()
461 view.Layer = canvas
462 view.BackgroundColor = t.BgBase
463 view.Cursor = cursor
464 return view
465}
466
467// New creates and initializes a new TUI application model.
468func New(app *app.App) tea.Model {
469 chatPage := chat.NewChatPage(app)
470 keyMap := DefaultKeyMap()
471 keyMap.pageBindings = chatPage.Bindings()
472
473 model := &appModel{
474 currentPage: chat.ChatPageID,
475 app: app,
476 status: status.NewStatusCmp(keyMap),
477 loadedPages: make(map[page.PageID]bool),
478 keyMap: keyMap,
479
480 pages: map[page.PageID]util.Model{
481 chat.ChatPageID: chatPage,
482 logs.LogsPage: logs.NewLogsPage(),
483 },
484
485 dialog: dialogs.NewDialogCmp(),
486 completions: completions.New(),
487 }
488
489 return model
490}