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