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/layout"
17 "github.com/charmbracelet/crush/internal/tui/components/core/status"
18 "github.com/charmbracelet/crush/internal/tui/components/dialogs"
19 "github.com/charmbracelet/crush/internal/tui/components/dialogs/commands"
20 "github.com/charmbracelet/crush/internal/tui/components/dialogs/compact"
21 "github.com/charmbracelet/crush/internal/tui/components/dialogs/filepicker"
22 initDialog "github.com/charmbracelet/crush/internal/tui/components/dialogs/init"
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 // Check if we should show the init dialog
69 cmds = append(cmds, func() tea.Msg {
70 shouldShow, err := config.ProjectNeedsInitialization()
71 if err != nil {
72 return util.InfoMsg{
73 Type: util.InfoTypeError,
74 Msg: "Failed to check init status: " + err.Error(),
75 }
76 }
77 if shouldShow {
78 return dialogs.OpenDialogMsg{
79 Model: initDialog.NewInitDialogCmp(),
80 }
81 }
82 return nil
83 })
84
85 // Enable mouse support.
86 cmds = append(cmds, tea.EnableMouseAllMotion)
87
88 return tea.Batch(cmds...)
89}
90
91// Update handles incoming messages and updates the application state.
92func (a *appModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
93 var cmds []tea.Cmd
94 var cmd tea.Cmd
95
96 switch msg := msg.(type) {
97 case tea.KeyboardEnhancementsMsg:
98 return a, nil
99 case tea.WindowSizeMsg:
100 return a, a.handleWindowResize(msg.Width, msg.Height)
101
102 // Completions messages
103 case completions.OpenCompletionsMsg, completions.FilterCompletionsMsg, completions.CloseCompletionsMsg:
104 u, completionCmd := a.completions.Update(msg)
105 a.completions = u.(completions.Completions)
106 return a, completionCmd
107
108 // Dialog messages
109 case dialogs.OpenDialogMsg, dialogs.CloseDialogMsg:
110 u, dialogCmd := a.dialog.Update(msg)
111 a.dialog = u.(dialogs.DialogCmp)
112 return a, 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.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(),
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 -= 4
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 // if the quit dialog is already open, close the app
304 return tea.Quit
305 }
306 return util.CmdHandler(dialogs.OpenDialogMsg{
307 Model: quit.NewQuitDialog(),
308 })
309
310 case key.Matches(msg, a.keyMap.Commands):
311 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
312 // If the commands dialog is already open, close it
313 return util.CmdHandler(dialogs.CloseDialogMsg{})
314 }
315 return util.CmdHandler(dialogs.OpenDialogMsg{
316 Model: commands.NewCommandDialog(a.selectedSessionID),
317 })
318 case key.Matches(msg, a.keyMap.Sessions):
319 if a.dialog.ActiveDialogID() == sessions.SessionsDialogID {
320 // If the sessions dialog is already open, close it
321 return util.CmdHandler(dialogs.CloseDialogMsg{})
322 }
323 var cmds []tea.Cmd
324 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
325 // If the commands dialog is open, close it first
326 cmds = append(cmds, util.CmdHandler(dialogs.CloseDialogMsg{}))
327 }
328 cmds = append(cmds,
329 func() tea.Msg {
330 allSessions, _ := a.app.Sessions.List(context.Background())
331 return dialogs.OpenDialogMsg{
332 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
333 }
334 },
335 )
336 return tea.Sequence(cmds...)
337 default:
338 if a.dialog.HasDialogs() {
339 u, dialogCmd := a.dialog.Update(msg)
340 a.dialog = u.(dialogs.DialogCmp)
341 return dialogCmd
342 } else {
343 updated, cmd := a.pages[a.currentPage].Update(msg)
344 a.pages[a.currentPage] = updated.(util.Model)
345 return cmd
346 }
347 }
348}
349
350// moveToPage handles navigation between different pages in the application.
351func (a *appModel) moveToPage(pageID page.PageID) tea.Cmd {
352 if a.app.CoderAgent.IsBusy() {
353 // TODO: maybe remove this : For now we don't move to any page if the agent is busy
354 return util.ReportWarn("Agent is busy, please wait...")
355 }
356
357 var cmds []tea.Cmd
358 if _, ok := a.loadedPages[pageID]; !ok {
359 cmd := a.pages[pageID].Init()
360 cmds = append(cmds, cmd)
361 a.loadedPages[pageID] = true
362 }
363 a.previousPage = a.currentPage
364 a.currentPage = pageID
365 if sizable, ok := a.pages[a.currentPage].(layout.Sizeable); ok {
366 cmd := sizable.SetSize(a.width, a.height)
367 cmds = append(cmds, cmd)
368 }
369
370 return tea.Batch(cmds...)
371}
372
373// View renders the complete application interface including pages, dialogs, and overlays.
374func (a *appModel) View() tea.View {
375 page := a.pages[a.currentPage]
376 if withHelp, ok := page.(layout.Help); ok {
377 a.keyMap.pageBindings = withHelp.Bindings()
378 }
379 a.status.SetKeyMap(a.keyMap)
380 pageView := page.View()
381 components := []string{
382 pageView,
383 }
384 components = append(components, a.status.View())
385
386 appView := lipgloss.JoinVertical(lipgloss.Top, components...)
387 layers := []*lipgloss.Layer{
388 lipgloss.NewLayer(appView),
389 }
390 if a.dialog.HasDialogs() {
391 layers = append(
392 layers,
393 a.dialog.GetLayers()...,
394 )
395 }
396
397 var cursor *tea.Cursor
398 if v, ok := page.(util.Cursor); ok {
399 cursor = v.Cursor()
400 }
401 activeView := a.dialog.ActiveModel()
402 if activeView != nil {
403 cursor = nil // Reset cursor if a dialog is active unless it implements util.Cursor
404 if v, ok := activeView.(util.Cursor); ok {
405 cursor = v.Cursor()
406 }
407 }
408
409 if a.completions.Open() && cursor != nil {
410 cmp := a.completions.View()
411 x, y := a.completions.Position()
412 layers = append(
413 layers,
414 lipgloss.NewLayer(cmp).X(x).Y(y),
415 )
416 }
417
418 canvas := lipgloss.NewCanvas(
419 layers...,
420 )
421
422 var view tea.View
423 t := styles.CurrentTheme()
424 view.Layer = canvas
425 view.BackgroundColor = t.BgBase
426 view.Cursor = cursor
427 return view
428}
429
430// New creates and initializes a new TUI application model.
431func New(app *app.App) tea.Model {
432 chatPage := chat.NewChatPage(app)
433 keyMap := DefaultKeyMap()
434 keyMap.pageBindings = chatPage.Bindings()
435
436 model := &appModel{
437 currentPage: chat.ChatPageID,
438 app: app,
439 status: status.NewStatusCmp(keyMap),
440 loadedPages: make(map[page.PageID]bool),
441 keyMap: keyMap,
442
443 pages: map[page.PageID]util.Model{
444 chat.ChatPageID: chatPage,
445 },
446
447 dialog: dialogs.NewDialogCmp(),
448 completions: completions.New(),
449 }
450
451 return model
452}