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.SessionClearedMsg:
138 a.selectedSessionID = ""
139 // Commands
140 case commands.SwitchSessionsMsg:
141 return a, func() tea.Msg {
142 allSessions, _ := a.app.Sessions.List(context.Background())
143 return dialogs.OpenDialogMsg{
144 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
145 }
146 }
147
148 case commands.SwitchModelMsg:
149 return a, util.CmdHandler(
150 dialogs.OpenDialogMsg{
151 Model: models.NewModelDialogCmp(),
152 },
153 )
154 // Compact
155 case commands.CompactMsg:
156 return a, util.CmdHandler(dialogs.OpenDialogMsg{
157 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, msg.SessionID, true),
158 })
159
160 // Model Switch
161 case models.ModelSelectedMsg:
162 config.Get().UpdatePreferredModel(msg.ModelType, msg.Model)
163
164 // Update the agent with the new model/provider configuration
165 if err := a.app.UpdateAgentModel(); err != nil {
166 return a, util.ReportError(fmt.Errorf("model changed to %s but failed to update agent: %v", msg.Model.Model, err))
167 }
168
169 modelTypeName := "large"
170 if msg.ModelType == config.SelectedModelTypeSmall {
171 modelTypeName = "small"
172 }
173 return a, util.ReportInfo(fmt.Sprintf("%s model changed to %s", modelTypeName, msg.Model.Model))
174
175 // File Picker
176 case chat.OpenFilePickerMsg:
177 if a.dialog.ActiveDialogID() == filepicker.FilePickerID {
178 // If the commands dialog is already open, close it
179 return a, util.CmdHandler(dialogs.CloseDialogMsg{})
180 }
181 return a, util.CmdHandler(dialogs.OpenDialogMsg{
182 Model: filepicker.NewFilePickerCmp(a.app.Config().WorkingDir()),
183 })
184 // Permissions
185 case pubsub.Event[permission.PermissionRequest]:
186 return a, util.CmdHandler(dialogs.OpenDialogMsg{
187 Model: permissions.NewPermissionDialogCmp(msg.Payload),
188 })
189 case permissions.PermissionResponseMsg:
190 switch msg.Action {
191 case permissions.PermissionAllow:
192 a.app.Permissions.Grant(msg.Permission)
193 case permissions.PermissionAllowForSession:
194 a.app.Permissions.GrantPersistent(msg.Permission)
195 case permissions.PermissionDeny:
196 a.app.Permissions.Deny(msg.Permission)
197 }
198 return a, nil
199 // Agent Events
200 case pubsub.Event[agent.AgentEvent]:
201 payload := msg.Payload
202
203 // Forward agent events to dialogs
204 if a.dialog.HasDialogs() && a.dialog.ActiveDialogID() == compact.CompactDialogID {
205 u, dialogCmd := a.dialog.Update(payload)
206 a.dialog = u.(dialogs.DialogCmp)
207 cmds = append(cmds, dialogCmd)
208 }
209
210 // Handle auto-compact logic
211 if payload.Done && payload.Type == agent.AgentEventTypeResponse && a.selectedSessionID != "" {
212 // Get current session to check token usage
213 session, err := a.app.Sessions.Get(context.Background(), a.selectedSessionID)
214 if err == nil {
215 model := a.app.CoderAgent.Model()
216 contextWindow := model.ContextWindow
217 tokens := session.CompletionTokens + session.PromptTokens
218 if (tokens >= int64(float64(contextWindow)*0.95)) && !config.Get().Options.DisableAutoSummarize { // Show compact confirmation dialog
219 cmds = append(cmds, util.CmdHandler(dialogs.OpenDialogMsg{
220 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, a.selectedSessionID, false),
221 }))
222 }
223 }
224 }
225
226 return a, tea.Batch(cmds...)
227 // Key Press Messages
228 case tea.KeyPressMsg:
229 return a, a.handleKeyPressMsg(msg)
230 }
231 s, _ := a.status.Update(msg)
232 a.status = s.(status.StatusCmp)
233 updated, cmd := a.pages[a.currentPage].Update(msg)
234 a.pages[a.currentPage] = updated.(util.Model)
235 if a.dialog.HasDialogs() {
236 u, dialogCmd := a.dialog.Update(msg)
237 a.dialog = u.(dialogs.DialogCmp)
238 cmds = append(cmds, dialogCmd)
239 }
240 cmds = append(cmds, cmd)
241 return a, tea.Batch(cmds...)
242}
243
244// handleWindowResize processes window resize events and updates all components.
245func (a *appModel) handleWindowResize(width, height int) tea.Cmd {
246 var cmds []tea.Cmd
247 a.wWidth, a.wHeight = width, height
248 if a.showingFullHelp {
249 height -= 5
250 } else {
251 height -= 2
252 }
253 a.width, a.height = width, height
254 // Update status bar
255 s, cmd := a.status.Update(tea.WindowSizeMsg{Width: width, Height: height})
256 a.status = s.(status.StatusCmp)
257 cmds = append(cmds, cmd)
258
259 // Update the current page
260 for p, page := range a.pages {
261 updated, pageCmd := page.Update(tea.WindowSizeMsg{Width: width, Height: height})
262 a.pages[p] = updated.(util.Model)
263 cmds = append(cmds, pageCmd)
264 }
265
266 // Update the dialogs
267 dialog, cmd := a.dialog.Update(tea.WindowSizeMsg{Width: width, Height: height})
268 a.dialog = dialog.(dialogs.DialogCmp)
269 cmds = append(cmds, cmd)
270
271 return tea.Batch(cmds...)
272}
273
274// handleKeyPressMsg processes keyboard input and routes to appropriate handlers.
275func (a *appModel) handleKeyPressMsg(msg tea.KeyPressMsg) tea.Cmd {
276 switch {
277 // completions
278 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Up):
279 u, cmd := a.completions.Update(msg)
280 a.completions = u.(completions.Completions)
281 return cmd
282
283 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Down):
284 u, cmd := a.completions.Update(msg)
285 a.completions = u.(completions.Completions)
286 return cmd
287 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Select):
288 u, cmd := a.completions.Update(msg)
289 a.completions = u.(completions.Completions)
290 return cmd
291 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Cancel):
292 u, cmd := a.completions.Update(msg)
293 a.completions = u.(completions.Completions)
294 return cmd
295 // help
296 case key.Matches(msg, a.keyMap.Help):
297 a.status.ToggleFullHelp()
298 a.showingFullHelp = !a.showingFullHelp
299 return a.handleWindowResize(a.wWidth, a.wHeight)
300 // dialogs
301 case key.Matches(msg, a.keyMap.Quit):
302 if a.dialog.ActiveDialogID() == quit.QuitDialogID {
303 return tea.Quit
304 }
305 return util.CmdHandler(dialogs.OpenDialogMsg{
306 Model: quit.NewQuitDialog(),
307 })
308
309 case key.Matches(msg, a.keyMap.Commands):
310 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
311 return util.CmdHandler(dialogs.CloseDialogMsg{})
312 }
313 if a.dialog.HasDialogs() {
314 return nil
315 }
316 return util.CmdHandler(dialogs.OpenDialogMsg{
317 Model: commands.NewCommandDialog(a.selectedSessionID),
318 })
319 case key.Matches(msg, a.keyMap.Sessions):
320 if a.dialog.ActiveDialogID() == sessions.SessionsDialogID {
321 return util.CmdHandler(dialogs.CloseDialogMsg{})
322 }
323 if a.dialog.HasDialogs() && a.dialog.ActiveDialogID() != commands.CommandsDialogID {
324 return nil
325 }
326 var cmds []tea.Cmd
327 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
328 // If the commands dialog is open, close it first
329 cmds = append(cmds, util.CmdHandler(dialogs.CloseDialogMsg{}))
330 }
331 cmds = append(cmds,
332 func() tea.Msg {
333 allSessions, _ := a.app.Sessions.List(context.Background())
334 return dialogs.OpenDialogMsg{
335 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
336 }
337 },
338 )
339 return tea.Sequence(cmds...)
340 default:
341 if a.dialog.HasDialogs() {
342 u, dialogCmd := a.dialog.Update(msg)
343 a.dialog = u.(dialogs.DialogCmp)
344 return dialogCmd
345 } else {
346 updated, cmd := a.pages[a.currentPage].Update(msg)
347 a.pages[a.currentPage] = updated.(util.Model)
348 return cmd
349 }
350 }
351}
352
353// moveToPage handles navigation between different pages in the application.
354func (a *appModel) moveToPage(pageID page.PageID) tea.Cmd {
355 if a.app.CoderAgent.IsBusy() {
356 // TODO: maybe remove this : For now we don't move to any page if the agent is busy
357 return util.ReportWarn("Agent is busy, please wait...")
358 }
359
360 var cmds []tea.Cmd
361 if _, ok := a.loadedPages[pageID]; !ok {
362 cmd := a.pages[pageID].Init()
363 cmds = append(cmds, cmd)
364 a.loadedPages[pageID] = true
365 }
366 a.previousPage = a.currentPage
367 a.currentPage = pageID
368 if sizable, ok := a.pages[a.currentPage].(layout.Sizeable); ok {
369 cmd := sizable.SetSize(a.width, a.height)
370 cmds = append(cmds, cmd)
371 }
372
373 return tea.Batch(cmds...)
374}
375
376// View renders the complete application interface including pages, dialogs, and overlays.
377func (a *appModel) View() tea.View {
378 page := a.pages[a.currentPage]
379 if withHelp, ok := page.(core.KeyMapHelp); ok {
380 a.status.SetKeyMap(withHelp.Help())
381 }
382 pageView := page.View()
383 components := []string{
384 pageView,
385 }
386 components = append(components, a.status.View())
387
388 appView := lipgloss.JoinVertical(lipgloss.Top, components...)
389 layers := []*lipgloss.Layer{
390 lipgloss.NewLayer(appView),
391 }
392 if a.dialog.HasDialogs() {
393 layers = append(
394 layers,
395 a.dialog.GetLayers()...,
396 )
397 }
398
399 var cursor *tea.Cursor
400 if v, ok := page.(util.Cursor); ok {
401 cursor = v.Cursor()
402 }
403 activeView := a.dialog.ActiveModel()
404 if activeView != nil {
405 cursor = nil // Reset cursor if a dialog is active unless it implements util.Cursor
406 if v, ok := activeView.(util.Cursor); ok {
407 cursor = v.Cursor()
408 }
409 }
410
411 if a.completions.Open() && cursor != nil {
412 cmp := a.completions.View()
413 x, y := a.completions.Position()
414 layers = append(
415 layers,
416 lipgloss.NewLayer(cmp).X(x).Y(y),
417 )
418 }
419
420 canvas := lipgloss.NewCanvas(
421 layers...,
422 )
423
424 var view tea.View
425 t := styles.CurrentTheme()
426 view.Layer = canvas
427 view.BackgroundColor = t.BgBase
428 view.Cursor = cursor
429 return view
430}
431
432// New creates and initializes a new TUI application model.
433func New(app *app.App) tea.Model {
434 chatPage := chat.New(app)
435 keyMap := DefaultKeyMap()
436 keyMap.pageBindings = chatPage.Bindings()
437
438 model := &appModel{
439 currentPage: chat.ChatPageID,
440 app: app,
441 status: status.NewStatusCmp(),
442 loadedPages: make(map[page.PageID]bool),
443 keyMap: keyMap,
444
445 pages: map[page.PageID]util.Model{
446 chat.ChatPageID: chatPage,
447 },
448
449 dialog: dialogs.NewDialogCmp(),
450 completions: completions.New(),
451 }
452
453 return model
454}