1package messages
2
3import (
4 "fmt"
5 "path/filepath"
6 "strings"
7 "time"
8
9 "github.com/charmbracelet/bubbles/v2/key"
10 "github.com/charmbracelet/bubbles/v2/viewport"
11 tea "github.com/charmbracelet/bubbletea/v2"
12 "github.com/charmbracelet/catwalk/pkg/catwalk"
13 "github.com/charmbracelet/lipgloss/v2"
14 "github.com/charmbracelet/x/ansi"
15 "github.com/charmbracelet/x/exp/ordered"
16 "github.com/google/uuid"
17
18 "github.com/atotto/clipboard"
19 "github.com/charmbracelet/crush/internal/config"
20 "github.com/charmbracelet/crush/internal/message"
21 "github.com/charmbracelet/crush/internal/tui/components/anim"
22 "github.com/charmbracelet/crush/internal/tui/components/core"
23 "github.com/charmbracelet/crush/internal/tui/components/core/layout"
24 "github.com/charmbracelet/crush/internal/tui/exp/list"
25 "github.com/charmbracelet/crush/internal/tui/styles"
26 "github.com/charmbracelet/crush/internal/tui/util"
27)
28
29// CopyKey is the key binding for copying message content to the clipboard.
30var CopyKey = key.NewBinding(key.WithKeys("c", "y", "C", "Y"), key.WithHelp("c/y", "copy"))
31
32// ClearSelectionKey is the key binding for clearing the current selection in the chat interface.
33var ClearSelectionKey = key.NewBinding(key.WithKeys("esc", "alt+esc"), key.WithHelp("esc", "clear selection"))
34
35// MessageCmp defines the interface for message components in the chat interface.
36// It combines standard UI model interfaces with message-specific functionality.
37type MessageCmp interface {
38 util.Model // Basic Bubble util.Model interface
39 layout.Sizeable // Width/height management
40 layout.Focusable // Focus state management
41 GetMessage() message.Message // Access to underlying message data
42 SetMessage(msg message.Message) // Update the message content
43 Spinning() bool // Animation state for loading messages
44 ID() string
45}
46
47// messageCmp implements the MessageCmp interface for displaying chat messages.
48// It handles rendering of user and assistant messages with proper styling,
49// animations, and state management.
50type messageCmp struct {
51 width int // Component width for text wrapping
52 focused bool // Focus state for border styling
53
54 // Core message data and state
55 message message.Message // The underlying message content
56 spinning bool // Whether to show loading animation
57 anim *anim.Anim // Animation component for loading states
58
59 // Thinking viewport for displaying reasoning content
60 thinkingViewport viewport.Model
61}
62
63var focusedMessageBorder = lipgloss.Border{
64 Left: "▌",
65}
66
67// NewMessageCmp creates a new message component with the given message and options
68func NewMessageCmp(msg message.Message) MessageCmp {
69 t := styles.CurrentTheme()
70
71 thinkingViewport := viewport.New()
72 thinkingViewport.SetHeight(1)
73 thinkingViewport.KeyMap = viewport.KeyMap{}
74
75 m := &messageCmp{
76 message: msg,
77 anim: anim.New(anim.Settings{
78 Size: 15,
79 GradColorA: t.Primary,
80 GradColorB: t.Secondary,
81 CycleColors: true,
82 }),
83 thinkingViewport: thinkingViewport,
84 }
85 return m
86}
87
88// Init initializes the message component and starts animations if needed.
89// Returns a command to start the animation for spinning messages.
90func (m *messageCmp) Init() tea.Cmd {
91 m.spinning = m.shouldSpin()
92 return m.anim.Init()
93}
94
95// Update handles incoming messages and updates the component state.
96// Manages animation updates for spinning messages and stops animation when appropriate.
97func (m *messageCmp) Update(msg tea.Msg) (util.Model, tea.Cmd) {
98 switch msg := msg.(type) {
99 case anim.StepMsg:
100 m.spinning = m.shouldSpin()
101 if m.spinning {
102 u, cmd := m.anim.Update(msg)
103 m.anim = u.(*anim.Anim)
104 return m, cmd
105 }
106 case tea.KeyPressMsg:
107 if key.Matches(msg, CopyKey) {
108 return m, tea.Sequence(
109 tea.SetClipboard(m.message.Content().Text),
110 func() tea.Msg {
111 _ = clipboard.WriteAll(m.message.Content().Text)
112 return nil
113 },
114 util.ReportInfo("Message copied to clipboard"),
115 )
116 }
117 }
118 return m, nil
119}
120
121// View renders the message component based on its current state.
122// Returns different views for spinning, user, and assistant messages.
123func (m *messageCmp) View() string {
124 if m.spinning && m.message.ReasoningContent().Thinking == "" {
125 if m.message.IsSummaryMessage {
126 m.anim.SetLabel("Summarizing")
127 }
128 return m.style().PaddingLeft(1).Render(m.anim.View())
129 }
130 if m.message.ID != "" {
131 // this is a user or assistant message
132 switch m.message.Role {
133 case message.User:
134 return m.renderUserMessage()
135 default:
136 return m.renderAssistantMessage()
137 }
138 }
139 return m.style().Render("No message content")
140}
141
142// GetMessage returns the underlying message data
143func (m *messageCmp) GetMessage() message.Message {
144 return m.message
145}
146
147func (m *messageCmp) SetMessage(msg message.Message) {
148 m.message = msg
149}
150
151// textWidth calculates the available width for text content,
152// accounting for borders and padding
153func (m *messageCmp) textWidth() int {
154 return m.width - 2 // take into account the border and/or padding
155}
156
157// style returns the lipgloss style for the message component.
158// Applies different border colors and styles based on message role and focus state.
159func (msg *messageCmp) style() lipgloss.Style {
160 t := styles.CurrentTheme()
161 borderStyle := lipgloss.NormalBorder()
162 if msg.focused {
163 borderStyle = focusedMessageBorder
164 }
165
166 style := t.S().Text
167 if msg.message.Role == message.User {
168 style = style.PaddingLeft(1).BorderLeft(true).BorderStyle(borderStyle).BorderForeground(t.Primary)
169 } else {
170 if msg.focused {
171 style = style.PaddingLeft(1).BorderLeft(true).BorderStyle(borderStyle).BorderForeground(t.GreenDark)
172 } else {
173 style = style.PaddingLeft(2)
174 }
175 }
176 return style
177}
178
179// renderAssistantMessage renders assistant messages with optional footer information.
180// Shows model name, response time, and finish reason when the message is complete.
181func (m *messageCmp) renderAssistantMessage() string {
182 t := styles.CurrentTheme()
183 parts := []string{}
184 content := m.message.Content().String()
185 thinking := m.message.IsThinking()
186 finished := m.message.IsFinished()
187 finishedData := m.message.FinishPart()
188 thinkingContent := ""
189
190 if thinking || strings.TrimSpace(m.message.ReasoningContent().Thinking) != "" {
191 m.anim.SetLabel("Thinking")
192 thinkingContent = m.renderThinkingContent()
193 } else if finished && content == "" && finishedData.Reason == message.FinishReasonEndTurn {
194 content = ""
195 } else if finished && content == "" && finishedData.Reason == message.FinishReasonCanceled {
196 content = "*Canceled*"
197 } else if finished && content == "" && finishedData.Reason == message.FinishReasonError {
198 errTag := t.S().Base.Padding(0, 1).Background(t.Red).Foreground(t.White).Render("ERROR")
199 truncated := ansi.Truncate(finishedData.Message, m.textWidth()-2-lipgloss.Width(errTag), "...")
200 title := fmt.Sprintf("%s %s", errTag, t.S().Base.Foreground(t.FgHalfMuted).Render(truncated))
201 details := t.S().Base.Foreground(t.FgSubtle).Width(m.textWidth() - 2).Render(finishedData.Details)
202 errorContent := fmt.Sprintf("%s\n\n%s", title, details)
203 return m.style().Render(errorContent)
204 }
205
206 if thinkingContent != "" {
207 parts = append(parts, thinkingContent)
208 }
209
210 if content != "" {
211 if thinkingContent != "" {
212 parts = append(parts, "")
213 }
214 parts = append(parts, m.toMarkdown(content))
215 }
216
217 joined := lipgloss.JoinVertical(lipgloss.Left, parts...)
218 return m.style().Render(joined)
219}
220
221// renderUserMessage renders user messages with file attachments. It displays
222// message content and any attached files with appropriate icons.
223func (m *messageCmp) renderUserMessage() string {
224 t := styles.CurrentTheme()
225 parts := []string{
226 m.toMarkdown(m.message.Content().String()),
227 }
228
229 attachmentStyles := t.S().Text.
230 MarginLeft(1).
231 Background(t.BgSubtle)
232
233 attachments := make([]string, len(m.message.BinaryContent()))
234 for i, attachment := range m.message.BinaryContent() {
235 const maxFilenameWidth = 10
236 filename := filepath.Base(attachment.Path)
237 attachments[i] = attachmentStyles.Render(fmt.Sprintf(
238 " %s %s ",
239 styles.DocumentIcon,
240 ansi.Truncate(filename, maxFilenameWidth, "..."),
241 ))
242 }
243
244 if len(attachments) > 0 {
245 parts = append(parts, "", strings.Join(attachments, ""))
246 }
247
248 joined := lipgloss.JoinVertical(lipgloss.Left, parts...)
249 return m.style().Render(joined)
250}
251
252// toMarkdown converts text content to rendered markdown using the configured renderer
253func (m *messageCmp) toMarkdown(content string) string {
254 r := styles.GetMarkdownRenderer(m.textWidth())
255 rendered, _ := r.Render(content)
256 return strings.TrimSuffix(rendered, "\n")
257}
258
259func (m *messageCmp) renderThinkingContent() string {
260 t := styles.CurrentTheme()
261 reasoningContent := m.message.ReasoningContent()
262 if strings.TrimSpace(reasoningContent.Thinking) == "" {
263 return ""
264 }
265
266 width := m.textWidth() - 2
267 width = min(width, 120)
268
269 renderer := styles.GetPlainMarkdownRenderer(width - 1)
270 rendered, err := renderer.Render(reasoningContent.Thinking)
271 if err != nil {
272 lines := strings.Split(reasoningContent.Thinking, "\n")
273 var content strings.Builder
274 lineStyle := t.S().Subtle.Background(t.BgBaseLighter)
275 for i, line := range lines {
276 if line == "" {
277 continue
278 }
279 content.WriteString(lineStyle.Width(width).Render(line))
280 if i < len(lines)-1 {
281 content.WriteString("\n")
282 }
283 }
284 rendered = content.String()
285 }
286
287 fullContent := strings.TrimSpace(rendered)
288 height := ordered.Clamp(lipgloss.Height(fullContent), 1, 10)
289 m.thinkingViewport.SetHeight(height)
290 m.thinkingViewport.SetWidth(m.textWidth())
291 m.thinkingViewport.SetContent(fullContent)
292 m.thinkingViewport.GotoBottom()
293 finishReason := m.message.FinishPart()
294 var footer string
295 if reasoningContent.StartedAt > 0 {
296 duration := m.message.ThinkingDuration()
297 if reasoningContent.FinishedAt > 0 {
298 m.anim.SetLabel("")
299 opts := core.StatusOpts{
300 Title: "Thought for",
301 Description: duration.String(),
302 }
303 if duration.String() != "0s" {
304 footer = t.S().Base.PaddingLeft(1).Render(core.Status(opts, m.textWidth()-1))
305 }
306 } else if finishReason != nil && finishReason.Reason == message.FinishReasonCanceled {
307 footer = t.S().Base.PaddingLeft(1).Render(m.toMarkdown("*Canceled*"))
308 } else {
309 footer = m.anim.View()
310 }
311 }
312 lineStyle := t.S().Subtle.Background(t.BgBaseLighter)
313 return lineStyle.Width(m.textWidth()).Padding(0, 1).Render(m.thinkingViewport.View()) + "\n\n" + footer
314}
315
316// shouldSpin determines whether the message should show a loading animation.
317// Only assistant messages without content that aren't finished should spin.
318func (m *messageCmp) shouldSpin() bool {
319 if m.message.Role != message.Assistant {
320 return false
321 }
322
323 if m.message.IsFinished() {
324 return false
325 }
326
327 if strings.TrimSpace(m.message.Content().Text) != "" {
328 return false
329 }
330 if len(m.message.ToolCalls()) > 0 {
331 return false
332 }
333 return true
334}
335
336// Blur removes focus from the message component
337func (m *messageCmp) Blur() tea.Cmd {
338 m.focused = false
339 return nil
340}
341
342// Focus sets focus on the message component
343func (m *messageCmp) Focus() tea.Cmd {
344 m.focused = true
345 return nil
346}
347
348// IsFocused returns whether the message component is currently focused
349func (m *messageCmp) IsFocused() bool {
350 return m.focused
351}
352
353// Size management methods
354
355// GetSize returns the current dimensions of the message component
356func (m *messageCmp) GetSize() (int, int) {
357 return m.width, 0
358}
359
360// SetSize updates the width of the message component for text wrapping
361func (m *messageCmp) SetSize(width int, height int) tea.Cmd {
362 m.width = ordered.Clamp(width, 1, 120)
363 m.thinkingViewport.SetWidth(m.width - 4)
364 return nil
365}
366
367// Spinning returns whether the message is currently showing a loading animation
368func (m *messageCmp) Spinning() bool {
369 return m.spinning
370}
371
372type AssistantSection interface {
373 list.Item
374 layout.Sizeable
375}
376type assistantSectionModel struct {
377 width int
378 id string
379 message message.Message
380 lastUserMessageTime time.Time
381}
382
383// ID implements AssistantSection.
384func (m *assistantSectionModel) ID() string {
385 return m.id
386}
387
388func NewAssistantSection(message message.Message, lastUserMessageTime time.Time) AssistantSection {
389 return &assistantSectionModel{
390 width: 0,
391 id: uuid.NewString(),
392 message: message,
393 lastUserMessageTime: lastUserMessageTime,
394 }
395}
396
397func (m *assistantSectionModel) Init() tea.Cmd {
398 return nil
399}
400
401func (m *assistantSectionModel) Update(tea.Msg) (util.Model, tea.Cmd) {
402 return m, nil
403}
404
405func (m *assistantSectionModel) View() string {
406 t := styles.CurrentTheme()
407 finishData := m.message.FinishPart()
408 finishTime := time.Unix(finishData.Time, 0)
409 duration := finishTime.Sub(m.lastUserMessageTime)
410 infoMsg := t.S().Subtle.Render(duration.String())
411 icon := t.S().Subtle.Render(styles.ModelIcon)
412 model := config.Get().GetModel(m.message.Provider, m.message.Model)
413 if model == nil {
414 // This means the model is not configured anymore
415 model = &catwalk.Model{
416 Name: "Unknown Model",
417 }
418 }
419 modelFormatted := t.S().Muted.Render(model.Name)
420 assistant := fmt.Sprintf("%s %s %s", icon, modelFormatted, infoMsg)
421 return t.S().Base.PaddingLeft(2).Render(
422 core.Section(assistant, m.width-2),
423 )
424}
425
426func (m *assistantSectionModel) GetSize() (int, int) {
427 return m.width, 1
428}
429
430func (m *assistantSectionModel) SetSize(width int, height int) tea.Cmd {
431 m.width = width
432 return nil
433}
434
435func (m *assistantSectionModel) IsSectionHeader() bool {
436 return true
437}
438
439func (m *messageCmp) ID() string {
440 return m.message.ID
441}