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 cmds = append(cmds, tea.EnableMouseAllMotion)
68
69 return tea.Batch(cmds...)
70}
71
72// Update handles incoming messages and updates the application state.
73func (a *appModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
74 var cmds []tea.Cmd
75 var cmd tea.Cmd
76
77 switch msg := msg.(type) {
78 case tea.KeyboardEnhancementsMsg:
79 return a, nil
80 case tea.WindowSizeMsg:
81 return a, a.handleWindowResize(msg.Width, msg.Height)
82
83 // Completions messages
84 case completions.OpenCompletionsMsg, completions.FilterCompletionsMsg, completions.CloseCompletionsMsg:
85 u, completionCmd := a.completions.Update(msg)
86 a.completions = u.(completions.Completions)
87 return a, completionCmd
88
89 // Dialog messages
90 case dialogs.OpenDialogMsg, dialogs.CloseDialogMsg:
91 u, dialogCmd := a.dialog.Update(msg)
92 a.dialog = u.(dialogs.DialogCmp)
93 return a, dialogCmd
94 case commands.ShowArgumentsDialogMsg:
95 return a, util.CmdHandler(
96 dialogs.OpenDialogMsg{
97 Model: commands.NewCommandArgumentsDialog(
98 msg.CommandID,
99 msg.Content,
100 msg.ArgNames,
101 ),
102 },
103 )
104 // Page change messages
105 case page.PageChangeMsg:
106 return a, a.moveToPage(msg.ID)
107
108 // Status Messages
109 case util.InfoMsg, util.ClearStatusMsg:
110 s, statusCmd := a.status.Update(msg)
111 a.status = s.(status.StatusCmp)
112 cmds = append(cmds, statusCmd)
113 return a, tea.Batch(cmds...)
114
115 // Session
116 case cmpChat.SessionSelectedMsg:
117 a.selectedSessionID = msg.ID
118 case cmpChat.SessionClearedMsg:
119 a.selectedSessionID = ""
120 // Commands
121 case commands.SwitchSessionsMsg:
122 return a, func() tea.Msg {
123 allSessions, _ := a.app.Sessions.List(context.Background())
124 return dialogs.OpenDialogMsg{
125 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
126 }
127 }
128
129 case commands.SwitchModelMsg:
130 return a, util.CmdHandler(
131 dialogs.OpenDialogMsg{
132 Model: models.NewModelDialogCmp(),
133 },
134 )
135 // Compact
136 case commands.CompactMsg:
137 return a, util.CmdHandler(dialogs.OpenDialogMsg{
138 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, msg.SessionID, true),
139 })
140
141 // Model Switch
142 case models.ModelSelectedMsg:
143 config.Get().UpdatePreferredModel(msg.ModelType, msg.Model)
144
145 // Update the agent with the new model/provider configuration
146 if err := a.app.UpdateAgentModel(); err != nil {
147 return a, util.ReportError(fmt.Errorf("model changed to %s but failed to update agent: %v", msg.Model.Model, err))
148 }
149
150 modelTypeName := "large"
151 if msg.ModelType == config.SelectedModelTypeSmall {
152 modelTypeName = "small"
153 }
154 return a, util.ReportInfo(fmt.Sprintf("%s model changed to %s", modelTypeName, msg.Model.Model))
155
156 // File Picker
157 case chat.OpenFilePickerMsg:
158 if a.dialog.ActiveDialogID() == filepicker.FilePickerID {
159 // If the commands dialog is already open, close it
160 return a, util.CmdHandler(dialogs.CloseDialogMsg{})
161 }
162 return a, util.CmdHandler(dialogs.OpenDialogMsg{
163 Model: filepicker.NewFilePickerCmp(),
164 })
165 // Permissions
166 case pubsub.Event[permission.PermissionRequest]:
167 return a, util.CmdHandler(dialogs.OpenDialogMsg{
168 Model: permissions.NewPermissionDialogCmp(msg.Payload),
169 })
170 case permissions.PermissionResponseMsg:
171 switch msg.Action {
172 case permissions.PermissionAllow:
173 a.app.Permissions.Grant(msg.Permission)
174 case permissions.PermissionAllowForSession:
175 a.app.Permissions.GrantPersistent(msg.Permission)
176 case permissions.PermissionDeny:
177 a.app.Permissions.Deny(msg.Permission)
178 }
179 return a, nil
180 // Agent Events
181 case pubsub.Event[agent.AgentEvent]:
182 payload := msg.Payload
183
184 // Forward agent events to dialogs
185 if a.dialog.HasDialogs() && a.dialog.ActiveDialogID() == compact.CompactDialogID {
186 u, dialogCmd := a.dialog.Update(payload)
187 a.dialog = u.(dialogs.DialogCmp)
188 cmds = append(cmds, dialogCmd)
189 }
190
191 // Handle auto-compact logic
192 if payload.Done && payload.Type == agent.AgentEventTypeResponse && a.selectedSessionID != "" {
193 // Get current session to check token usage
194 session, err := a.app.Sessions.Get(context.Background(), a.selectedSessionID)
195 if err == nil {
196 model := a.app.CoderAgent.Model()
197 contextWindow := model.ContextWindow
198 tokens := session.CompletionTokens + session.PromptTokens
199 if (tokens >= int64(float64(contextWindow)*0.95)) && !config.Get().Options.DisableAutoSummarize { // Show compact confirmation dialog
200 cmds = append(cmds, util.CmdHandler(dialogs.OpenDialogMsg{
201 Model: compact.NewCompactDialogCmp(a.app.CoderAgent, a.selectedSessionID, false),
202 }))
203 }
204 }
205 }
206
207 return a, tea.Batch(cmds...)
208 // Key Press Messages
209 case tea.KeyPressMsg:
210 return a, a.handleKeyPressMsg(msg)
211 }
212 s, _ := a.status.Update(msg)
213 a.status = s.(status.StatusCmp)
214 updated, cmd := a.pages[a.currentPage].Update(msg)
215 a.pages[a.currentPage] = updated.(util.Model)
216 if a.dialog.HasDialogs() {
217 u, dialogCmd := a.dialog.Update(msg)
218 a.dialog = u.(dialogs.DialogCmp)
219 cmds = append(cmds, dialogCmd)
220 }
221 cmds = append(cmds, cmd)
222 return a, tea.Batch(cmds...)
223}
224
225// handleWindowResize processes window resize events and updates all components.
226func (a *appModel) handleWindowResize(width, height int) tea.Cmd {
227 var cmds []tea.Cmd
228 a.wWidth, a.wHeight = width, height
229 if a.showingFullHelp {
230 height -= 4
231 } else {
232 height -= 2
233 }
234 a.width, a.height = width, height
235 // Update status bar
236 s, cmd := a.status.Update(tea.WindowSizeMsg{Width: width, Height: height})
237 a.status = s.(status.StatusCmp)
238 cmds = append(cmds, cmd)
239
240 // Update the current page
241 for p, page := range a.pages {
242 updated, pageCmd := page.Update(tea.WindowSizeMsg{Width: width, Height: height})
243 a.pages[p] = updated.(util.Model)
244 cmds = append(cmds, pageCmd)
245 }
246
247 // Update the dialogs
248 dialog, cmd := a.dialog.Update(tea.WindowSizeMsg{Width: width, Height: height})
249 a.dialog = dialog.(dialogs.DialogCmp)
250 cmds = append(cmds, cmd)
251
252 return tea.Batch(cmds...)
253}
254
255// handleKeyPressMsg processes keyboard input and routes to appropriate handlers.
256func (a *appModel) handleKeyPressMsg(msg tea.KeyPressMsg) tea.Cmd {
257 switch {
258 // completions
259 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Up):
260 u, cmd := a.completions.Update(msg)
261 a.completions = u.(completions.Completions)
262 return cmd
263
264 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Down):
265 u, cmd := a.completions.Update(msg)
266 a.completions = u.(completions.Completions)
267 return cmd
268 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Select):
269 u, cmd := a.completions.Update(msg)
270 a.completions = u.(completions.Completions)
271 return cmd
272 case a.completions.Open() && key.Matches(msg, a.completions.KeyMap().Cancel):
273 u, cmd := a.completions.Update(msg)
274 a.completions = u.(completions.Completions)
275 return cmd
276 // help
277 case key.Matches(msg, a.keyMap.Help):
278 a.status.ToggleFullHelp()
279 a.showingFullHelp = !a.showingFullHelp
280 return a.handleWindowResize(a.wWidth, a.wHeight)
281 // dialogs
282 case key.Matches(msg, a.keyMap.Quit):
283 if a.dialog.ActiveDialogID() == quit.QuitDialogID {
284 // if the quit dialog is already open, close the app
285 return tea.Quit
286 }
287 return util.CmdHandler(dialogs.OpenDialogMsg{
288 Model: quit.NewQuitDialog(),
289 })
290
291 case key.Matches(msg, a.keyMap.Commands):
292 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
293 // If the commands dialog is already open, close it
294 return util.CmdHandler(dialogs.CloseDialogMsg{})
295 }
296 return util.CmdHandler(dialogs.OpenDialogMsg{
297 Model: commands.NewCommandDialog(a.selectedSessionID),
298 })
299 case key.Matches(msg, a.keyMap.Sessions):
300 if a.dialog.ActiveDialogID() == sessions.SessionsDialogID {
301 // If the sessions dialog is already open, close it
302 return util.CmdHandler(dialogs.CloseDialogMsg{})
303 }
304 var cmds []tea.Cmd
305 if a.dialog.ActiveDialogID() == commands.CommandsDialogID {
306 // If the commands dialog is open, close it first
307 cmds = append(cmds, util.CmdHandler(dialogs.CloseDialogMsg{}))
308 }
309 cmds = append(cmds,
310 func() tea.Msg {
311 allSessions, _ := a.app.Sessions.List(context.Background())
312 return dialogs.OpenDialogMsg{
313 Model: sessions.NewSessionDialogCmp(allSessions, a.selectedSessionID),
314 }
315 },
316 )
317 return tea.Sequence(cmds...)
318 default:
319 if a.dialog.HasDialogs() {
320 u, dialogCmd := a.dialog.Update(msg)
321 a.dialog = u.(dialogs.DialogCmp)
322 return dialogCmd
323 } else {
324 updated, cmd := a.pages[a.currentPage].Update(msg)
325 a.pages[a.currentPage] = updated.(util.Model)
326 return cmd
327 }
328 }
329}
330
331// moveToPage handles navigation between different pages in the application.
332func (a *appModel) moveToPage(pageID page.PageID) tea.Cmd {
333 if a.app.CoderAgent.IsBusy() {
334 // TODO: maybe remove this : For now we don't move to any page if the agent is busy
335 return util.ReportWarn("Agent is busy, please wait...")
336 }
337
338 var cmds []tea.Cmd
339 if _, ok := a.loadedPages[pageID]; !ok {
340 cmd := a.pages[pageID].Init()
341 cmds = append(cmds, cmd)
342 a.loadedPages[pageID] = true
343 }
344 a.previousPage = a.currentPage
345 a.currentPage = pageID
346 if sizable, ok := a.pages[a.currentPage].(layout.Sizeable); ok {
347 cmd := sizable.SetSize(a.width, a.height)
348 cmds = append(cmds, cmd)
349 }
350
351 return tea.Batch(cmds...)
352}
353
354// View renders the complete application interface including pages, dialogs, and overlays.
355func (a *appModel) View() tea.View {
356 page := a.pages[a.currentPage]
357 if withHelp, ok := page.(layout.Help); ok {
358 a.keyMap.pageBindings = withHelp.Bindings()
359 }
360 a.status.SetKeyMap(a.keyMap)
361 pageView := page.View()
362 components := []string{
363 pageView,
364 }
365 components = append(components, a.status.View())
366
367 appView := lipgloss.JoinVertical(lipgloss.Top, components...)
368 layers := []*lipgloss.Layer{
369 lipgloss.NewLayer(appView),
370 }
371 if a.dialog.HasDialogs() {
372 layers = append(
373 layers,
374 a.dialog.GetLayers()...,
375 )
376 }
377
378 var cursor *tea.Cursor
379 if v, ok := page.(util.Cursor); ok {
380 cursor = v.Cursor()
381 }
382 activeView := a.dialog.ActiveModel()
383 if activeView != nil {
384 cursor = nil // Reset cursor if a dialog is active unless it implements util.Cursor
385 if v, ok := activeView.(util.Cursor); ok {
386 cursor = v.Cursor()
387 }
388 }
389
390 if a.completions.Open() && cursor != nil {
391 cmp := a.completions.View()
392 x, y := a.completions.Position()
393 layers = append(
394 layers,
395 lipgloss.NewLayer(cmp).X(x).Y(y),
396 )
397 }
398
399 canvas := lipgloss.NewCanvas(
400 layers...,
401 )
402
403 var view tea.View
404 t := styles.CurrentTheme()
405 view.Layer = canvas
406 view.BackgroundColor = t.BgBase
407 view.Cursor = cursor
408 return view
409}
410
411// New creates and initializes a new TUI application model.
412func New(app *app.App) tea.Model {
413 chatPage := chat.New(app)
414 keyMap := DefaultKeyMap()
415 keyMap.pageBindings = chatPage.Bindings()
416
417 model := &appModel{
418 currentPage: chat.ChatPageID,
419 app: app,
420 status: status.NewStatusCmp(keyMap),
421 loadedPages: make(map[page.PageID]bool),
422 keyMap: keyMap,
423
424 pages: map[page.PageID]util.Model{
425 chat.ChatPageID: chatPage,
426 },
427
428 dialog: dialogs.NewDialogCmp(),
429 completions: completions.New(),
430 }
431
432 return model
433}