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
275func renderToolParams(paramWidth int, toolCall message.ToolCall) string {
276 params := ""
277 switch toolCall.Name {
278 case agent.AgentToolName:
279 var params agent.AgentParams
280 json.Unmarshal([]byte(toolCall.Input), ¶ms)
281 prompt := strings.ReplaceAll(params.Prompt, "\n", " ")
282 return renderParams(paramWidth, prompt)
283 case tools.BashToolName:
284 var params tools.BashParams
285 json.Unmarshal([]byte(toolCall.Input), ¶ms)
286 command := strings.ReplaceAll(params.Command, "\n", " ")
287 return renderParams(paramWidth, command)
288 case tools.EditToolName:
289 var params tools.EditParams
290 json.Unmarshal([]byte(toolCall.Input), ¶ms)
291 filePath := removeWorkingDirPrefix(params.FilePath)
292 return renderParams(paramWidth, filePath)
293 case tools.FetchToolName:
294 var params tools.FetchParams
295 json.Unmarshal([]byte(toolCall.Input), ¶ms)
296 url := params.URL
297 toolParams := []string{
298 url,
299 }
300 if params.Format != "" {
301 toolParams = append(toolParams, "format", params.Format)
302 }
303 if params.Timeout != 0 {
304 toolParams = append(toolParams, "timeout", (time.Duration(params.Timeout) * time.Second).String())
305 }
306 return renderParams(paramWidth, toolParams...)
307 case tools.GlobToolName:
308 var params tools.GlobParams
309 json.Unmarshal([]byte(toolCall.Input), ¶ms)
310 pattern := params.Pattern
311 toolParams := []string{
312 pattern,
313 }
314 if params.Path != "" {
315 toolParams = append(toolParams, "path", params.Path)
316 }
317 return renderParams(paramWidth, toolParams...)
318 case tools.GrepToolName:
319 var params tools.GrepParams
320 json.Unmarshal([]byte(toolCall.Input), ¶ms)
321 pattern := params.Pattern
322 toolParams := []string{
323 pattern,
324 }
325 if params.Path != "" {
326 toolParams = append(toolParams, "path", params.Path)
327 }
328 if params.Include != "" {
329 toolParams = append(toolParams, "include", params.Include)
330 }
331 if params.LiteralText {
332 toolParams = append(toolParams, "literal", "true")
333 }
334 return renderParams(paramWidth, toolParams...)
335 case tools.LSToolName:
336 var params tools.LSParams
337 json.Unmarshal([]byte(toolCall.Input), ¶ms)
338 path := params.Path
339 if path == "" {
340 path = "."
341 }
342 return renderParams(paramWidth, path)
343 case tools.SourcegraphToolName:
344 var params tools.SourcegraphParams
345 json.Unmarshal([]byte(toolCall.Input), ¶ms)
346 return renderParams(paramWidth, params.Query)
347 case tools.ViewToolName:
348 var params tools.ViewParams
349 json.Unmarshal([]byte(toolCall.Input), ¶ms)
350 filePath := removeWorkingDirPrefix(params.FilePath)
351 toolParams := []string{
352 filePath,
353 }
354 if params.Limit != 0 {
355 toolParams = append(toolParams, "limit", fmt.Sprintf("%d", params.Limit))
356 }
357 if params.Offset != 0 {
358 toolParams = append(toolParams, "offset", fmt.Sprintf("%d", params.Offset))
359 }
360 return renderParams(paramWidth, toolParams...)
361 case tools.WriteToolName:
362 var params tools.WriteParams
363 json.Unmarshal([]byte(toolCall.Input), ¶ms)
364 filePath := removeWorkingDirPrefix(params.FilePath)
365 return renderParams(paramWidth, filePath)
366 default:
367 input := strings.ReplaceAll(toolCall.Input, "\n", " ")
368 params = renderParams(paramWidth, input)
369 }
370 return params
371}
372
373func renderToolResponse(toolCall message.ToolCall, response message.ToolResult, width int) string {
374 t := theme.CurrentTheme()
375 baseStyle := styles.BaseStyle()
376
377 if response.IsError {
378 errContent := fmt.Sprintf("Error: %s", strings.ReplaceAll(response.Content, "\n", " "))
379 errContent = ansi.Truncate(errContent, width-1, "...")
380 return baseStyle.
381 Width(width).
382 Foreground(t.Error()).
383 Render(errContent)
384 }
385
386 resultContent := truncateHeight(response.Content, maxResultHeight)
387 switch toolCall.Name {
388 case agent.AgentToolName:
389 return toMarkdown(resultContent, false, width)
390 case tools.BashToolName:
391 resultContent = fmt.Sprintf("```bash\n%s\n```", resultContent)
392 return toMarkdown(resultContent, true, width)
393 case tools.EditToolName:
394 metadata := tools.EditResponseMetadata{}
395 json.Unmarshal([]byte(response.Metadata), &metadata)
396 truncDiff := truncateHeight(metadata.Diff, maxResultHeight)
397 formattedDiff, _ := diff.FormatDiff(truncDiff, diff.WithTotalWidth(width))
398 return formattedDiff
399 case tools.FetchToolName:
400 var params tools.FetchParams
401 json.Unmarshal([]byte(toolCall.Input), ¶ms)
402 mdFormat := "markdown"
403 switch params.Format {
404 case "text":
405 mdFormat = "text"
406 case "html":
407 mdFormat = "html"
408 }
409 resultContent = fmt.Sprintf("```%s\n%s\n```", mdFormat, resultContent)
410 return toMarkdown(resultContent, true, width)
411 case tools.GlobToolName:
412 return baseStyle.Width(width).Foreground(t.TextMuted()).Render(resultContent)
413 case tools.GrepToolName:
414 return baseStyle.Width(width).Foreground(t.TextMuted()).Render(resultContent)
415 case tools.LSToolName:
416 return baseStyle.Width(width).Foreground(t.TextMuted()).Render(resultContent)
417 case tools.SourcegraphToolName:
418 return baseStyle.Width(width).Foreground(t.TextMuted()).Render(resultContent)
419 case tools.ViewToolName:
420 metadata := tools.ViewResponseMetadata{}
421 json.Unmarshal([]byte(response.Metadata), &metadata)
422 ext := filepath.Ext(metadata.FilePath)
423 if ext == "" {
424 ext = ""
425 } else {
426 ext = strings.ToLower(ext[1:])
427 }
428 resultContent = fmt.Sprintf("```%s\n%s\n```", ext, truncateHeight(metadata.Content, maxResultHeight))
429 return toMarkdown(resultContent, true, width)
430 case tools.WriteToolName:
431 params := tools.WriteParams{}
432 json.Unmarshal([]byte(toolCall.Input), ¶ms)
433 metadata := tools.WriteResponseMetadata{}
434 json.Unmarshal([]byte(response.Metadata), &metadata)
435 ext := filepath.Ext(params.FilePath)
436 if ext == "" {
437 ext = ""
438 } else {
439 ext = strings.ToLower(ext[1:])
440 }
441 resultContent = fmt.Sprintf("```%s\n%s\n```", ext, truncateHeight(params.Content, maxResultHeight))
442 return toMarkdown(resultContent, true, width)
443 default:
444 resultContent = fmt.Sprintf("```text\n%s\n```", resultContent)
445 return toMarkdown(resultContent, true, width)
446 }
447}
448
449func renderToolMessage(
450 toolCall message.ToolCall,
451 allMessages []message.Message,
452 messagesService message.Service,
453 focusedUIMessageId string,
454 nested bool,
455 width int,
456 position int,
457) uiMessage {
458 if nested {
459 width = width - 3
460 }
461
462 t := theme.CurrentTheme()
463 baseStyle := styles.BaseStyle()
464
465 style := baseStyle.
466 Width(width - 1).
467 BorderLeft(true).
468 BorderStyle(lipgloss.ThickBorder()).
469 PaddingLeft(1).
470 BorderForeground(t.TextMuted())
471
472 response := findToolResponse(toolCall.ID, allMessages)
473 toolNameText := baseStyle.Foreground(t.TextMuted()).
474 Render(fmt.Sprintf("%s: ", toolName(toolCall.Name)))
475
476 if !toolCall.Finished {
477 // Get a brief description of what the tool is doing
478 toolAction := getToolAction(toolCall.Name)
479
480 progressText := baseStyle.
481 Width(width - 2 - lipgloss.Width(toolNameText)).
482 Foreground(t.TextMuted()).
483 Render(fmt.Sprintf("%s", toolAction))
484
485 content := style.Render(lipgloss.JoinHorizontal(lipgloss.Left, toolNameText, progressText))
486 toolMsg := uiMessage{
487 messageType: toolMessageType,
488 position: position,
489 height: lipgloss.Height(content),
490 content: content,
491 }
492 return toolMsg
493 }
494
495 params := renderToolParams(width-2-lipgloss.Width(toolNameText), toolCall)
496 responseContent := ""
497 if response != nil {
498 responseContent = renderToolResponse(toolCall, *response, width-2)
499 responseContent = strings.TrimSuffix(responseContent, "\n")
500 } else {
501 responseContent = baseStyle.
502 Italic(true).
503 Width(width - 2).
504 Foreground(t.TextMuted()).
505 Render("Waiting for response...")
506 }
507
508 parts := []string{}
509 if !nested {
510 formattedParams := baseStyle.
511 Width(width - 2 - lipgloss.Width(toolNameText)).
512 Foreground(t.TextMuted()).
513 Render(params)
514
515 parts = append(parts, lipgloss.JoinHorizontal(lipgloss.Left, toolNameText, formattedParams))
516 } else {
517 prefix := baseStyle.
518 Foreground(t.TextMuted()).
519 Render(" └ ")
520 formattedParams := baseStyle.
521 Width(width - 2 - lipgloss.Width(toolNameText)).
522 Foreground(t.TextMuted()).
523 Render(params)
524 parts = append(parts, lipgloss.JoinHorizontal(lipgloss.Left, prefix, toolNameText, formattedParams))
525 }
526
527 if toolCall.Name == agent.AgentToolName {
528 taskMessages, _ := messagesService.List(context.Background(), toolCall.ID)
529 toolCalls := []message.ToolCall{}
530 for _, v := range taskMessages {
531 toolCalls = append(toolCalls, v.ToolCalls()...)
532 }
533 for _, call := range toolCalls {
534 rendered := renderToolMessage(call, []message.Message{}, messagesService, focusedUIMessageId, true, width, 0)
535 parts = append(parts, rendered.content)
536 }
537 }
538 if responseContent != "" && !nested {
539 parts = append(parts, responseContent)
540 }
541
542 content := style.Render(
543 lipgloss.JoinVertical(
544 lipgloss.Left,
545 parts...,
546 ),
547 )
548 if nested {
549 content = lipgloss.JoinVertical(
550 lipgloss.Left,
551 parts...,
552 )
553 }
554 toolMsg := uiMessage{
555 messageType: toolMessageType,
556 position: position,
557 height: lipgloss.Height(content),
558 content: content,
559 }
560 return toolMsg
561}
562
563func removeWorkingDirPrefix(path string) string {
564 wd := config.WorkingDirectory()
565 path = strings.TrimPrefix(path, wd)
566 return path
567}
568
569func truncateHeight(content string, height int) string {
570 lines := strings.Split(content, "\n")
571 if len(lines) > height {
572 return strings.Join(lines[:height], "\n")
573 }
574 return content
575}
576
577func renderParams(paramsWidth int, params ...string) string {
578 if len(params) == 0 {
579 return ""
580 }
581 mainParam := params[0]
582 if len(mainParam) > paramsWidth {
583 mainParam = mainParam[:paramsWidth-3] + "..."
584 }
585
586 if len(params) == 1 {
587 return mainParam
588 }
589 otherParams := params[1:]
590 // create pairs of key/value
591 // if odd number of params, the last one is a key without value
592 if len(otherParams)%2 != 0 {
593 otherParams = append(otherParams, "")
594 }
595 parts := make([]string, 0, len(otherParams)/2)
596 for i := 0; i < len(otherParams); i += 2 {
597 key := otherParams[i]
598 value := otherParams[i+1]
599 if value == "" {
600 continue
601 }
602 parts = append(parts, fmt.Sprintf("%s=%s", key, value))
603 }
604
605 partsRendered := strings.Join(parts, ", ")
606 remainingWidth := paramsWidth - lipgloss.Width(partsRendered) - 3 // count for " ()"
607 if remainingWidth < 30 {
608 // No space for the params, just show the main
609 return mainParam
610 }
611
612 if len(parts) > 0 {
613 mainParam = fmt.Sprintf("%s (%s)", mainParam, strings.Join(parts, ", "))
614 }
615
616 return ansi.Truncate(mainParam, paramsWidth, "...")
617}
618
619// Helper function to format the time difference between two Unix timestamps
620func formatTimestampDiff(start, end int64) string {
621 diffSeconds := float64(end-start) / 1000.0 // Convert to seconds
622 if diffSeconds < 1 {
623 return fmt.Sprintf("%dms", int(diffSeconds*1000))
624 }
625 if diffSeconds < 60 {
626 return fmt.Sprintf("%.1fs", diffSeconds)
627 }
628 return fmt.Sprintf("%.1fm", diffSeconds/60)
629}