1package chat
2
3import (
4 "context"
5 "encoding/json"
6 "fmt"
7 "path/filepath"
8 "strings"
9 "time"
10
11 "github.com/charmbracelet/lipgloss/v2"
12 "github.com/charmbracelet/x/ansi"
13 "github.com/opencode-ai/opencode/internal/config"
14 "github.com/opencode-ai/opencode/internal/diff"
15 "github.com/opencode-ai/opencode/internal/llm/agent"
16 "github.com/opencode-ai/opencode/internal/llm/models"
17 "github.com/opencode-ai/opencode/internal/llm/tools"
18 "github.com/opencode-ai/opencode/internal/message"
19 "github.com/opencode-ai/opencode/internal/tui/styles"
20 "github.com/opencode-ai/opencode/internal/tui/theme"
21)
22
23type uiMessageType int
24
25const (
26 userMessageType uiMessageType = iota
27 assistantMessageType
28 toolMessageType
29
30 maxResultHeight = 10
31)
32
33type uiMessage struct {
34 ID string
35 messageType uiMessageType
36 position int
37 height int
38 content string
39}
40
41func toMarkdown(content string, focused bool, width int) string {
42 r := styles.GetMarkdownRenderer(width)
43 rendered, _ := r.Render(content)
44 return rendered
45}
46
47func renderMessage(msg string, isUser bool, isFocused bool, width int, info ...string) string {
48 t := theme.CurrentTheme()
49
50 style := styles.BaseStyle().
51 Width(width - 1).
52 BorderLeft(true).
53 Foreground(t.TextMuted()).
54 BorderForeground(t.Primary()).
55 BorderStyle(lipgloss.ThickBorder())
56
57 if isUser {
58 style = style.BorderForeground(t.Secondary())
59 }
60
61 // Apply markdown formatting and handle background color
62 parts := []string{
63 toMarkdown(msg, isFocused, width),
64 }
65
66 // Remove newline at the end
67 parts[0] = strings.TrimSuffix(parts[0], "\n")
68 if len(info) > 0 {
69 parts = append(parts, info...)
70 }
71
72 rendered := style.Render(
73 lipgloss.JoinVertical(
74 lipgloss.Left,
75 parts...,
76 ),
77 )
78
79 return rendered
80}
81
82func renderUserMessage(msg message.Message, isFocused bool, width int, position int) uiMessage {
83 var styledAttachments []string
84 t := theme.CurrentTheme()
85 attachmentStyles := styles.BaseStyle().
86 MarginLeft(1).
87 Background(t.TextMuted()).
88 Foreground(t.Text())
89 for _, attachment := range msg.BinaryContent() {
90 file := filepath.Base(attachment.Path)
91 var filename string
92 if len(file) > 10 {
93 filename = fmt.Sprintf(" %s %s...", styles.DocumentIcon, file[0:7])
94 } else {
95 filename = fmt.Sprintf(" %s %s", styles.DocumentIcon, file)
96 }
97 styledAttachments = append(styledAttachments, attachmentStyles.Render(filename))
98 }
99 content := ""
100 if len(styledAttachments) > 0 {
101 attachmentContent := styles.BaseStyle().Width(width).Render(lipgloss.JoinHorizontal(lipgloss.Left, styledAttachments...))
102 content = renderMessage(msg.Content().String(), true, isFocused, width, attachmentContent)
103 } else {
104 content = renderMessage(msg.Content().String(), true, isFocused, width)
105 }
106 userMsg := uiMessage{
107 ID: msg.ID,
108 messageType: userMessageType,
109 position: position,
110 height: lipgloss.Height(content),
111 content: content,
112 }
113 return userMsg
114}
115
116// Returns multiple uiMessages because of the tool calls
117func renderAssistantMessage(
118 msg message.Message,
119 msgIndex int,
120 allMessages []message.Message, // we need this to get tool results and the user message
121 messagesService message.Service, // We need this to get the task tool messages
122 focusedUIMessageId string,
123 isSummary bool,
124 width int,
125 position int,
126) []uiMessage {
127 messages := []uiMessage{}
128 content := msg.Content().String()
129 thinking := msg.IsThinking()
130 thinkingContent := msg.ReasoningContent().Thinking
131 finished := msg.IsFinished()
132 finishData := msg.FinishPart()
133 info := []string{}
134
135 t := theme.CurrentTheme()
136 baseStyle := styles.BaseStyle()
137
138 // Add finish info if available
139 if finished {
140 switch finishData.Reason {
141 case message.FinishReasonEndTurn:
142 took := formatTimestampDiff(msg.CreatedAt, finishData.Time)
143 info = append(info, baseStyle.
144 Width(width-1).
145 Foreground(t.TextMuted()).
146 Render(fmt.Sprintf(" %s (%s)", models.SupportedModels[msg.Model].Name, took)),
147 )
148 case message.FinishReasonCanceled:
149 info = append(info, baseStyle.
150 Width(width-1).
151 Foreground(t.TextMuted()).
152 Render(fmt.Sprintf(" %s (%s)", models.SupportedModels[msg.Model].Name, "canceled")),
153 )
154 case message.FinishReasonError:
155 info = append(info, baseStyle.
156 Width(width-1).
157 Foreground(t.TextMuted()).
158 Render(fmt.Sprintf(" %s (%s)", models.SupportedModels[msg.Model].Name, "error")),
159 )
160 case message.FinishReasonPermissionDenied:
161 info = append(info, baseStyle.
162 Width(width-1).
163 Foreground(t.TextMuted()).
164 Render(fmt.Sprintf(" %s (%s)", models.SupportedModels[msg.Model].Name, "permission denied")),
165 )
166 }
167 }
168 if content != "" || (finished && finishData.Reason == message.FinishReasonEndTurn) {
169 if content == "" {
170 content = "*Finished without output*"
171 }
172 if isSummary {
173 info = append(info, baseStyle.Width(width-1).Foreground(t.TextMuted()).Render(" (summary)"))
174 }
175
176 content = renderMessage(content, false, true, width, info...)
177 messages = append(messages, uiMessage{
178 ID: msg.ID,
179 messageType: assistantMessageType,
180 position: position,
181 height: lipgloss.Height(content),
182 content: content,
183 })
184 position += messages[0].height
185 position++ // for the space
186 } else if thinking && thinkingContent != "" {
187 // Render the thinking content
188 content = renderMessage(thinkingContent, false, msg.ID == focusedUIMessageId, width)
189 }
190
191 for i, toolCall := range msg.ToolCalls() {
192 toolCallContent := renderToolMessage(
193 toolCall,
194 allMessages,
195 messagesService,
196 focusedUIMessageId,
197 false,
198 width,
199 i+1,
200 )
201 messages = append(messages, toolCallContent)
202 position += toolCallContent.height
203 position++ // for the space
204 }
205 return messages
206}
207
208func findToolResponse(toolCallID string, futureMessages []message.Message) *message.ToolResult {
209 for _, msg := range futureMessages {
210 for _, result := range msg.ToolResults() {
211 if result.ToolCallID == toolCallID {
212 return &result
213 }
214 }
215 }
216 return nil
217}
218
219func toolName(name string) string {
220 switch name {
221 case agent.AgentToolName:
222 return "Task"
223 case tools.BashToolName:
224 return "Bash"
225 case tools.EditToolName:
226 return "Edit"
227 case tools.FetchToolName:
228 return "Fetch"
229 case tools.GlobToolName:
230 return "Glob"
231 case tools.GrepToolName:
232 return "Grep"
233 case tools.LSToolName:
234 return "List"
235 case tools.SourcegraphToolName:
236 return "Sourcegraph"
237 case tools.ViewToolName:
238 return "View"
239 case tools.WriteToolName:
240 return "Write"
241 case tools.PatchToolName:
242 return "Patch"
243 }
244 return name
245}
246
247func getToolAction(name string) string {
248 switch name {
249 case agent.AgentToolName:
250 return "Preparing prompt..."
251 case tools.BashToolName:
252 return "Building command..."
253 case tools.EditToolName:
254 return "Preparing edit..."
255 case tools.FetchToolName:
256 return "Writing fetch..."
257 case tools.GlobToolName:
258 return "Finding files..."
259 case tools.GrepToolName:
260 return "Searching content..."
261 case tools.LSToolName:
262 return "Listing directory..."
263 case tools.SourcegraphToolName:
264 return "Searching code..."
265 case tools.ViewToolName:
266 return "Reading file..."
267 case tools.WriteToolName:
268 return "Preparing write..."
269 case tools.PatchToolName:
270 return "Preparing patch..."
271 }
272 return "Working..."
273}
274
275// renders params, params[0] (params[1]=params[2] ....)
276func renderParams(paramsWidth int, params ...string) string {
277 if len(params) == 0 {
278 return ""
279 }
280 mainParam := params[0]
281 if len(mainParam) > paramsWidth {
282 mainParam = mainParam[:paramsWidth-3] + "..."
283 }
284
285 if len(params) == 1 {
286 return mainParam
287 }
288 otherParams := params[1:]
289 // create pairs of key/value
290 // if odd number of params, the last one is a key without value
291 if len(otherParams)%2 != 0 {
292 otherParams = append(otherParams, "")
293 }
294 parts := make([]string, 0, len(otherParams)/2)
295 for i := 0; i < len(otherParams); i += 2 {
296 key := otherParams[i]
297 value := otherParams[i+1]
298 if value == "" {
299 continue
300 }
301 parts = append(parts, fmt.Sprintf("%s=%s", key, value))
302 }
303
304 partsRendered := strings.Join(parts, ", ")
305 remainingWidth := paramsWidth - lipgloss.Width(partsRendered) - 5 // for the space
306 if remainingWidth < 30 {
307 // No space for the params, just show the main
308 return mainParam
309 }
310
311 if len(parts) > 0 {
312 mainParam = fmt.Sprintf("%s (%s)", mainParam, strings.Join(parts, ", "))
313 }
314
315 return ansi.Truncate(mainParam, paramsWidth, "...")
316}
317
318func removeWorkingDirPrefix(path string) string {
319 wd := config.WorkingDirectory()
320 if strings.HasPrefix(path, wd) {
321 path = strings.TrimPrefix(path, wd)
322 }
323 if strings.HasPrefix(path, "/") {
324 path = strings.TrimPrefix(path, "/")
325 }
326 if strings.HasPrefix(path, "./") {
327 path = strings.TrimPrefix(path, "./")
328 }
329 if strings.HasPrefix(path, "../") {
330 path = strings.TrimPrefix(path, "../")
331 }
332 return path
333}
334
335func renderToolParams(paramWidth int, toolCall message.ToolCall) string {
336 params := ""
337 switch toolCall.Name {
338 case agent.AgentToolName:
339 var params agent.AgentParams
340 json.Unmarshal([]byte(toolCall.Input), ¶ms)
341 prompt := strings.ReplaceAll(params.Prompt, "\n", " ")
342 return renderParams(paramWidth, prompt)
343 case tools.BashToolName:
344 var params tools.BashParams
345 json.Unmarshal([]byte(toolCall.Input), ¶ms)
346 command := strings.ReplaceAll(params.Command, "\n", " ")
347 return renderParams(paramWidth, command)
348 case tools.EditToolName:
349 var params tools.EditParams
350 json.Unmarshal([]byte(toolCall.Input), ¶ms)
351 filePath := removeWorkingDirPrefix(params.FilePath)
352 return renderParams(paramWidth, filePath)
353 case tools.FetchToolName:
354 var params tools.FetchParams
355 json.Unmarshal([]byte(toolCall.Input), ¶ms)
356 url := params.URL
357 toolParams := []string{
358 url,
359 }
360 if params.Format != "" {
361 toolParams = append(toolParams, "format", params.Format)
362 }
363 if params.Timeout != 0 {
364 toolParams = append(toolParams, "timeout", (time.Duration(params.Timeout) * time.Second).String())
365 }
366 return renderParams(paramWidth, toolParams...)
367 case tools.GlobToolName:
368 var params tools.GlobParams
369 json.Unmarshal([]byte(toolCall.Input), ¶ms)
370 pattern := params.Pattern
371 toolParams := []string{
372 pattern,
373 }
374 if params.Path != "" {
375 toolParams = append(toolParams, "path", params.Path)
376 }
377 return renderParams(paramWidth, toolParams...)
378 case tools.GrepToolName:
379 var params tools.GrepParams
380 json.Unmarshal([]byte(toolCall.Input), ¶ms)
381 pattern := params.Pattern
382 toolParams := []string{
383 pattern,
384 }
385 if params.Path != "" {
386 toolParams = append(toolParams, "path", params.Path)
387 }
388 if params.Include != "" {
389 toolParams = append(toolParams, "include", params.Include)
390 }
391 if params.LiteralText {
392 toolParams = append(toolParams, "literal", "true")
393 }
394 return renderParams(paramWidth, toolParams...)
395 case tools.LSToolName:
396 var params tools.LSParams
397 json.Unmarshal([]byte(toolCall.Input), ¶ms)
398 path := params.Path
399 if path == "" {
400 path = "."
401 }
402 return renderParams(paramWidth, path)
403 case tools.SourcegraphToolName:
404 var params tools.SourcegraphParams
405 json.Unmarshal([]byte(toolCall.Input), ¶ms)
406 return renderParams(paramWidth, params.Query)
407 case tools.ViewToolName:
408 var params tools.ViewParams
409 json.Unmarshal([]byte(toolCall.Input), ¶ms)
410 filePath := removeWorkingDirPrefix(params.FilePath)
411 toolParams := []string{
412 filePath,
413 }
414 if params.Limit != 0 {
415 toolParams = append(toolParams, "limit", fmt.Sprintf("%d", params.Limit))
416 }
417 if params.Offset != 0 {
418 toolParams = append(toolParams, "offset", fmt.Sprintf("%d", params.Offset))
419 }
420 return renderParams(paramWidth, toolParams...)
421 case tools.WriteToolName:
422 var params tools.WriteParams
423 json.Unmarshal([]byte(toolCall.Input), ¶ms)
424 filePath := removeWorkingDirPrefix(params.FilePath)
425 return renderParams(paramWidth, filePath)
426 default:
427 input := strings.ReplaceAll(toolCall.Input, "\n", " ")
428 params = renderParams(paramWidth, input)
429 }
430 return params
431}
432
433func truncateHeight(content string, height int) string {
434 lines := strings.Split(content, "\n")
435 if len(lines) > height {
436 return strings.Join(lines[:height], "\n")
437 }
438 return content
439}
440
441func renderToolResponse(toolCall message.ToolCall, response message.ToolResult, width int) string {
442 t := theme.CurrentTheme()
443 baseStyle := styles.BaseStyle()
444
445 if response.IsError {
446 errContent := fmt.Sprintf("Error: %s", strings.ReplaceAll(response.Content, "\n", " "))
447 errContent = ansi.Truncate(errContent, width-1, "...")
448 return baseStyle.
449 Width(width).
450 Foreground(t.Error()).
451 Render(errContent)
452 }
453
454 resultContent := truncateHeight(response.Content, maxResultHeight)
455 switch toolCall.Name {
456 case agent.AgentToolName:
457 return toMarkdown(resultContent, false, width)
458 case tools.BashToolName:
459 resultContent = fmt.Sprintf("```bash\n%s\n```", resultContent)
460 return toMarkdown(resultContent, true, width)
461 case tools.EditToolName:
462 metadata := tools.EditResponseMetadata{}
463 json.Unmarshal([]byte(response.Metadata), &metadata)
464 truncDiff := truncateHeight(metadata.Diff, maxResultHeight)
465 formattedDiff, _ := diff.FormatDiff(truncDiff, diff.WithTotalWidth(width))
466 return formattedDiff
467 case tools.FetchToolName:
468 var params tools.FetchParams
469 json.Unmarshal([]byte(toolCall.Input), ¶ms)
470 mdFormat := "markdown"
471 switch params.Format {
472 case "text":
473 mdFormat = "text"
474 case "html":
475 mdFormat = "html"
476 }
477 resultContent = fmt.Sprintf("```%s\n%s\n```", mdFormat, resultContent)
478 return toMarkdown(resultContent, true, width)
479 case tools.GlobToolName:
480 return baseStyle.Width(width).Foreground(t.TextMuted()).Render(resultContent)
481 case tools.GrepToolName:
482 return baseStyle.Width(width).Foreground(t.TextMuted()).Render(resultContent)
483 case tools.LSToolName:
484 return baseStyle.Width(width).Foreground(t.TextMuted()).Render(resultContent)
485 case tools.SourcegraphToolName:
486 return baseStyle.Width(width).Foreground(t.TextMuted()).Render(resultContent)
487 case tools.ViewToolName:
488 metadata := tools.ViewResponseMetadata{}
489 json.Unmarshal([]byte(response.Metadata), &metadata)
490 ext := filepath.Ext(metadata.FilePath)
491 if ext == "" {
492 ext = ""
493 } else {
494 ext = strings.ToLower(ext[1:])
495 }
496 resultContent = fmt.Sprintf("```%s\n%s\n```", ext, truncateHeight(metadata.Content, maxResultHeight))
497 return toMarkdown(resultContent, true, width)
498 case tools.WriteToolName:
499 params := tools.WriteParams{}
500 json.Unmarshal([]byte(toolCall.Input), ¶ms)
501 metadata := tools.WriteResponseMetadata{}
502 json.Unmarshal([]byte(response.Metadata), &metadata)
503 ext := filepath.Ext(params.FilePath)
504 if ext == "" {
505 ext = ""
506 } else {
507 ext = strings.ToLower(ext[1:])
508 }
509 resultContent = fmt.Sprintf("```%s\n%s\n```", ext, truncateHeight(params.Content, maxResultHeight))
510 return toMarkdown(resultContent, true, width)
511 default:
512 resultContent = fmt.Sprintf("```text\n%s\n```", resultContent)
513 return toMarkdown(resultContent, true, width)
514 }
515}
516
517func renderToolMessage(
518 toolCall message.ToolCall,
519 allMessages []message.Message,
520 messagesService message.Service,
521 focusedUIMessageId string,
522 nested bool,
523 width int,
524 position int,
525) uiMessage {
526 if nested {
527 width = width - 3
528 }
529
530 t := theme.CurrentTheme()
531 baseStyle := styles.BaseStyle()
532
533 style := baseStyle.
534 Width(width - 1).
535 BorderLeft(true).
536 BorderStyle(lipgloss.ThickBorder()).
537 PaddingLeft(1).
538 BorderForeground(t.TextMuted())
539
540 response := findToolResponse(toolCall.ID, allMessages)
541 toolNameText := baseStyle.Foreground(t.TextMuted()).
542 Render(fmt.Sprintf("%s: ", toolName(toolCall.Name)))
543
544 if !toolCall.Finished {
545 // Get a brief description of what the tool is doing
546 toolAction := getToolAction(toolCall.Name)
547
548 progressText := baseStyle.
549 Width(width - 2 - lipgloss.Width(toolNameText)).
550 Foreground(t.TextMuted()).
551 Render(fmt.Sprintf("%s", toolAction))
552
553 content := style.Render(lipgloss.JoinHorizontal(lipgloss.Left, toolNameText, progressText))
554 toolMsg := uiMessage{
555 messageType: toolMessageType,
556 position: position,
557 height: lipgloss.Height(content),
558 content: content,
559 }
560 return toolMsg
561 }
562
563 params := renderToolParams(width-2-lipgloss.Width(toolNameText), toolCall)
564 responseContent := ""
565 if response != nil {
566 responseContent = renderToolResponse(toolCall, *response, width-2)
567 responseContent = strings.TrimSuffix(responseContent, "\n")
568 } else {
569 responseContent = baseStyle.
570 Italic(true).
571 Width(width - 2).
572 Foreground(t.TextMuted()).
573 Render("Waiting for response...")
574 }
575
576 parts := []string{}
577 if !nested {
578 formattedParams := baseStyle.
579 Width(width - 2 - lipgloss.Width(toolNameText)).
580 Foreground(t.TextMuted()).
581 Render(params)
582
583 parts = append(parts, lipgloss.JoinHorizontal(lipgloss.Left, toolNameText, formattedParams))
584 } else {
585 prefix := baseStyle.
586 Foreground(t.TextMuted()).
587 Render(" └ ")
588 formattedParams := baseStyle.
589 Width(width - 2 - lipgloss.Width(toolNameText)).
590 Foreground(t.TextMuted()).
591 Render(params)
592 parts = append(parts, lipgloss.JoinHorizontal(lipgloss.Left, prefix, toolNameText, formattedParams))
593 }
594
595 if toolCall.Name == agent.AgentToolName {
596 taskMessages, _ := messagesService.List(context.Background(), toolCall.ID)
597 toolCalls := []message.ToolCall{}
598 for _, v := range taskMessages {
599 toolCalls = append(toolCalls, v.ToolCalls()...)
600 }
601 for _, call := range toolCalls {
602 rendered := renderToolMessage(call, []message.Message{}, messagesService, focusedUIMessageId, true, width, 0)
603 parts = append(parts, rendered.content)
604 }
605 }
606 if responseContent != "" && !nested {
607 parts = append(parts, responseContent)
608 }
609
610 content := style.Render(
611 lipgloss.JoinVertical(
612 lipgloss.Left,
613 parts...,
614 ),
615 )
616 if nested {
617 content = lipgloss.JoinVertical(
618 lipgloss.Left,
619 parts...,
620 )
621 }
622 toolMsg := uiMessage{
623 messageType: toolMessageType,
624 position: position,
625 height: lipgloss.Height(content),
626 content: content,
627 }
628 return toolMsg
629}
630
631// Helper function to format the time difference between two Unix timestamps
632func formatTimestampDiff(start, end int64) string {
633 diffSeconds := float64(end-start) / 1000.0 // Convert to seconds
634 if diffSeconds < 1 {
635 return fmt.Sprintf("%dms", int(diffSeconds*1000))
636 }
637 if diffSeconds < 60 {
638 return fmt.Sprintf("%.1fs", diffSeconds)
639 }
640 return fmt.Sprintf("%.1fm", diffSeconds/60)
641}