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 "github.com/charmbracelet/crush/internal/tui/components/dialogs/models"
23 "github.com/charmbracelet/crush/internal/tui/components/dialogs/permissions"
24 "github.com/charmbracelet/crush/internal/tui/components/dialogs/quit"
25 "github.com/charmbracelet/crush/internal/tui/components/dialogs/sessions"
26 "github.com/charmbracelet/crush/internal/tui/page"
27 "github.com/charmbracelet/crush/internal/tui/page/chat"
28 "github.com/charmbracelet/crush/internal/tui/styles"
29 "github.com/charmbracelet/crush/internal/tui/util"
30 "github.com/charmbracelet/lipgloss/v2"
31)
32
33// appModel represents the main application model that manages pages, dialogs, and UI state.
34type appModel struct {
35 wWidth, wHeight int // Window dimensions
36 width, height int
37 keyMap KeyMap
38
39 currentPage page.PageID
40 previousPage page.PageID
41 pages map[page.PageID]util.Model
42 loadedPages map[page.PageID]bool
43
44 // Status
45 status status.StatusCmp
46 showingFullHelp bool
47
48 app *app.App
49
50 dialog dialogs.DialogCmp
51 completions completions.Completions
52
53 // Chat Page Specific
54 selectedSessionID string // The ID of the currently selected session
55}
56
57// Init initializes the application model and returns initial commands.
58func (a appModel) Init() tea.Cmd {
59 var cmds []tea.Cmd
60 cmd := a.pages[a.currentPage].Init()
61 cmds = append(cmds, cmd)
62 a.loadedPages[a.currentPage] = true
63
64 cmd = a.status.Init()
65 cmds = append(cmds, cmd)
66
67 return tea.Batch(cmds...)
68}
69
70// Update handles incoming messages and updates the application state.
71func (a *appModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
72 var cmds []tea.Cmd
73 var cmd tea.Cmd
74
75 switch msg := msg.(type) {
76 case tea.KeyboardEnhancementsMsg:
77 return a, nil
78 case tea.WindowSizeMsg:
79 return a, a.handleWindowResize(msg.Width, msg.Height)
80
81 // Completions messages
82 case completions.OpenCompletionsMsg, completions.FilterCompletionsMsg, completions.CloseCompletionsMsg:
83 u, completionCmd := a.completions.Update(msg)
84 a.completions = u.(completions.Completions)
85 return a, completionCmd
86
87 // Dialog messages
88 case dialogs.OpenDialogMsg, dialogs.CloseDialogMsg:
89 u, dialogCmd := a.dialog.Update(msg)
90 a.dialog = u.(dialogs.DialogCmp)
91 return a, dialogCmd
92 case commands.ShowArgumentsDialogMsg:
93 return a, util.CmdHandler(
94 dialogs.OpenDialogMsg{
95 Model: commands.NewCommandArgumentsDialog(
96 msg.CommandID,
97 msg.Content,
98 msg.ArgNames,
99 ),
100 },
101 )
102 // Page change messages
103 case page.PageChangeMsg:
104 return a, a.moveToPage(msg.ID)
105
106 // Status Messages
107 case util.InfoMsg, util.ClearStatusMsg:
108 s, statusCmd := a.status.Update(msg)
109 a.status = s.(status.StatusCmp)
110 cmds = append(cmds, statusCmd)
111 return a, tea.Batch(cmds...)
112
113 // Session
114 case cmpChat.SessionSelectedMsg:
115 a.selectedSessionID = msg.ID
116 case cmpChat.SessionClearedMsg:
117 a.selectedSessionID = ""
118 // Commands
119 case commands.SwitchSessionsMsg:
120 return a, func() tea.Msg {
121 allSessions, _ := a.app.Sessions.List(context.Background())
122 return dialogs.OpenDialogMsg{
123 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
124 }
125 }
126
127 case commands.SwitchModelMsg:
128 return a, util.CmdHandler(
129 dialogs.OpenDialogMsg{
130 Model: models.NewModelDialogCmp(),
131 },
132 )
133 // Compact
134 case commands.CompactMsg:
135 return a, util.CmdHandler(dialogs.OpenDialogMsg{
136 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, msg.SessionID, true),
137 })
138
139 // Model Switch
140 case models.ModelSelectedMsg:
141 config.Get().UpdatePreferredModel(msg.ModelType, msg.Model)
142
143 // Update the agent with the new model/provider configuration
144 if err := a.app.UpdateAgentModel(); err != nil {
145 return a, util.ReportError(fmt.Errorf("model changed to %s but failed to update agent: %v", msg.Model.Model, err))
146 }
147
148 modelTypeName := "large"
149 if msg.ModelType == config.SelectedModelTypeSmall {
150 modelTypeName = "small"
151 }
152 return a, util.ReportInfo(fmt.Sprintf("%s model changed to %s", modelTypeName, msg.Model.Model))
153
154 // File Picker
155 case chat.OpenFilePickerMsg:
156 if a.dialog.ActiveDialogID() == filepicker.FilePickerID {
157 // If the commands dialog is already open, close it
158 return a, util.CmdHandler(dialogs.CloseDialogMsg{})
159 }
160 return a, util.CmdHandler(dialogs.OpenDialogMsg{
161 Model: filepicker.NewFilePickerCmp(),
162 })
163 // Permissions
164 case pubsub.Event[permission.PermissionRequest]:
165 return a, util.CmdHandler(dialogs.OpenDialogMsg{
166 Model: permissions.NewPermissionDialogCmp(msg.Payload),
167 })
168 case permissions.PermissionResponseMsg:
169 switch msg.Action {
170 case permissions.PermissionAllow:
171 a.app.Permissions.Grant(msg.Permission)
172 case permissions.PermissionAllowForSession:
173 a.app.Permissions.GrantPersistent(msg.Permission)
174 case permissions.PermissionDeny:
175 a.app.Permissions.Deny(msg.Permission)
176 }
177 return a, nil
178 // Agent Events
179 case pubsub.Event[agent.AgentEvent]:
180 payload := msg.Payload
181
182 // Forward agent events to dialogs
183 if a.dialog.HasDialogs() && a.dialog.ActiveDialogID() == compact.CompactDialogID {
184 u, dialogCmd := a.dialog.Update(payload)
185 a.dialog = u.(dialogs.DialogCmp)
186 cmds = append(cmds, dialogCmd)
187 }
188
189 // Handle auto-compact logic
190 if payload.Done && payload.Type == agent.AgentEventTypeResponse && a.selectedSessionID != "" {
191 // Get current session to check token usage
192 session, err := a.app.Sessions.Get(context.Background(), a.selectedSessionID)
193 if err == nil {
194 model := a.app.CoderAgent.Model()
195 contextWindow := model.ContextWindow
196 tokens := session.CompletionTokens + session.PromptTokens
197 if (tokens >= int64(float64(contextWindow)*0.95)) && !config.Get().Options.DisableAutoSummarize { // Show compact confirmation dialog
198 cmds = append(cmds, util.CmdHandler(dialogs.OpenDialogMsg{
199 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, a.selectedSessionID, false),
200 }))
201 }
202 }
203 }
204
205 return a, tea.Batch(cmds...)
206 // Key Press Messages
207 case tea.KeyPressMsg:
208 return a, a.handleKeyPressMsg(msg)
209 }
210 s, _ := a.status.Update(msg)
211 a.status = s.(status.StatusCmp)
212 updated, cmd := a.pages[a.currentPage].Update(msg)
213 a.pages[a.currentPage] = updated.(util.Model)
214 if a.dialog.HasDialogs() {
215 u, dialogCmd := a.dialog.Update(msg)
216 a.dialog = u.(dialogs.DialogCmp)
217 cmds = append(cmds, dialogCmd)
218 }
219 cmds = append(cmds, cmd)
220 return a, tea.Batch(cmds...)
221}
222
223// handleWindowResize processes window resize events and updates all components.
224func (a *appModel) handleWindowResize(width, height int) tea.Cmd {
225 var cmds []tea.Cmd
226 a.wWidth, a.wHeight = width, height
227 if a.showingFullHelp {
228 height -= 4
229 } else {
230 height -= 2
231 }
232 a.width, a.height = width, height
233 // Update status bar
234 s, cmd := a.status.Update(tea.WindowSizeMsg{Width: width, Height: height})
235 a.status = s.(status.StatusCmp)
236 cmds = append(cmds, cmd)
237
238 // Update the current page
239 for p, page := range a.pages {
240 updated, pageCmd := page.Update(tea.WindowSizeMsg{Width: width, Height: height})
241 a.pages[p] = updated.(util.Model)
242 cmds = append(cmds, pageCmd)
243 }
244
245 // Update the dialogs
246 dialog, cmd := a.dialog.Update(tea.WindowSizeMsg{Width: width, Height: height})
247 a.dialog = dialog.(dialogs.DialogCmp)
248 cmds = append(cmds, cmd)
249
250 return tea.Batch(cmds...)
251}
252
253// handleKeyPressMsg processes keyboard input and routes to appropriate handlers.
254func (a *appModel) handleKeyPressMsg(msg tea.KeyPressMsg) tea.Cmd {
255 switch {
256 // completions
257 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Up):
258 u, cmd := a.completions.Update(msg)
259 a.completions = u.(completions.Completions)
260 return cmd
261
262 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Down):
263 u, cmd := a.completions.Update(msg)
264 a.completions = u.(completions.Completions)
265 return cmd
266 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Select):
267 u, cmd := a.completions.Update(msg)
268 a.completions = u.(completions.Completions)
269 return cmd
270 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Cancel):
271 u, cmd := a.completions.Update(msg)
272 a.completions = u.(completions.Completions)
273 return cmd
274 // help
275 case key.Matches(msg, a.keyMap.Help):
276 a.status.ToggleFullHelp()
277 a.showingFullHelp = !a.showingFullHelp
278 return a.handleWindowResize(a.wWidth, a.wHeight)
279 // dialogs
280 case key.Matches(msg, a.keyMap.Quit):
281 if a.dialog.ActiveDialogID() == quit.QuitDialogID {
282 // if the quit dialog is already open, close the app
283 return tea.Quit
284 }
285 return util.CmdHandler(dialogs.OpenDialogMsg{
286 Model: quit.NewQuitDialog(),
287 })
288
289 case key.Matches(msg, a.keyMap.Commands):
290 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
291 // If the commands dialog is already open, close it
292 return util.CmdHandler(dialogs.CloseDialogMsg{})
293 }
294 return util.CmdHandler(dialogs.OpenDialogMsg{
295 Model: commands.NewCommandDialog(a.selectedSessionID),
296 })
297 case key.Matches(msg, a.keyMap.Sessions):
298 if a.dialog.ActiveDialogID() == sessions.SessionsDialogID {
299 // If the sessions dialog is already open, close it
300 return util.CmdHandler(dialogs.CloseDialogMsg{})
301 }
302 var cmds []tea.Cmd
303 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
304 // If the commands dialog is open, close it first
305 cmds = append(cmds, util.CmdHandler(dialogs.CloseDialogMsg{}))
306 }
307 cmds = append(cmds,
308 func() tea.Msg {
309 allSessions, _ := a.app.Sessions.List(context.Background())
310 return dialogs.OpenDialogMsg{
311 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
312 }
313 },
314 )
315 return tea.Sequence(cmds...)
316 default:
317 if a.dialog.HasDialogs() {
318 u, dialogCmd := a.dialog.Update(msg)
319 a.dialog = u.(dialogs.DialogCmp)
320 return dialogCmd
321 } else {
322 updated, cmd := a.pages[a.currentPage].Update(msg)
323 a.pages[a.currentPage] = updated.(util.Model)
324 return cmd
325 }
326 }
327}
328
329// moveToPage handles navigation between different pages in the application.
330func (a *appModel) moveToPage(pageID page.PageID) tea.Cmd {
331 if a.app.CoderAgent.IsBusy() {
332 // TODO: maybe remove this : For now we don't move to any page if the agent is busy
333 return util.ReportWarn("Agent is busy, please wait...")
334 }
335
336 var cmds []tea.Cmd
337 if _, ok := a.loadedPages[pageID]; !ok {
338 cmd := a.pages[pageID].Init()
339 cmds = append(cmds, cmd)
340 a.loadedPages[pageID] = true
341 }
342 a.previousPage = a.currentPage
343 a.currentPage = pageID
344 if sizable, ok := a.pages[a.currentPage].(layout.Sizeable); ok {
345 cmd := sizable.SetSize(a.width, a.height)
346 cmds = append(cmds, cmd)
347 }
348
349 return tea.Batch(cmds...)
350}
351
352// View renders the complete application interface including pages, dialogs, and overlays.
353func (a *appModel) View() tea.View {
354 page := a.pages[a.currentPage]
355 if withHelp, ok := page.(layout.Help); ok {
356 a.keyMap.pageBindings = withHelp.Bindings()
357 }
358 a.status.SetKeyMap(a.keyMap)
359 pageView := page.View()
360 components := []string{
361 pageView.String(),
362 }
363 components = append(components, a.status.View().String())
364
365 appView := lipgloss.JoinVertical(lipgloss.Top, components...)
366 layers := []*lipgloss.Layer{
367 lipgloss.NewLayer(appView),
368 }
369 if a.dialog.HasDialogs() {
370 layers = append(
371 layers,
372 a.dialog.GetLayers()...,
373 )
374 }
375
376 cursor := pageView.Cursor()
377 activeView := a.dialog.ActiveView()
378 if activeView != nil {
379 cursor = activeView.Cursor()
380 }
381
382 if a.completions.Open() && cursor != nil {
383 cmp := a.completions.View().String()
384 x, y := a.completions.Position()
385 layers = append(
386 layers,
387 lipgloss.NewLayer(cmp).X(x).Y(y),
388 )
389 }
390
391 canvas := lipgloss.NewCanvas(
392 layers...,
393 )
394
395 t := styles.CurrentTheme()
396 view := tea.NewView(canvas.Render())
397 view.SetBackgroundColor(t.BgBase)
398 view.SetCursor(cursor)
399 return view
400}
401
402// New creates and initializes a new TUI application model.
403func New(app *app.App) tea.Model {
404 chatPage := chat.New(app)
405 keyMap := DefaultKeyMap()
406 keyMap.pageBindings = chatPage.Bindings()
407
408 model := &appModel{
409 currentPage: chat.ChatPageID,
410 app: app,
411 status: status.NewStatusCmp(keyMap),
412 loadedPages: make(map[page.PageID]bool),
413 keyMap: keyMap,
414
415 pages: map[page.PageID]util.Model{
416 chat.ChatPageID: chatPage,
417 },
418
419 dialog: dialogs.NewDialogCmp(),
420 completions: completions.New(),
421 }
422
423 return model
424}