1package agent
2
3import (
4 "context"
5 _ "embed"
6 "errors"
7 "fmt"
8 "log/slog"
9 "strings"
10 "sync"
11 "time"
12
13 "charm.land/fantasy"
14 "charm.land/fantasy/providers/anthropic"
15 "charm.land/fantasy/providers/openai"
16 "github.com/charmbracelet/catwalk/pkg/catwalk"
17 "github.com/charmbracelet/crush/internal/agent/tools"
18 "github.com/charmbracelet/crush/internal/config"
19 "github.com/charmbracelet/crush/internal/csync"
20 "github.com/charmbracelet/crush/internal/message"
21 "github.com/charmbracelet/crush/internal/permission"
22 "github.com/charmbracelet/crush/internal/session"
23)
24
25//go:embed templates/title.md
26var titlePrompt []byte
27
28//go:embed templates/summary.md
29var summaryPrompt []byte
30
31type SessionAgentCall struct {
32 SessionID string
33 Prompt string
34 ProviderOptions fantasy.ProviderOptions
35 Attachments []message.Attachment
36 MaxOutputTokens int64
37 Temperature *float64
38 TopP *float64
39 TopK *int64
40 FrequencyPenalty *float64
41 PresencePenalty *float64
42}
43
44type SessionAgent interface {
45 Run(context.Context, SessionAgentCall) (*fantasy.AgentResult, error)
46 SetModels(large Model, small Model)
47 SetTools(tools []fantasy.AgentTool)
48 Cancel(sessionID string)
49 CancelAll()
50 IsSessionBusy(sessionID string) bool
51 IsBusy() bool
52 QueuedPrompts(sessionID string) int
53 ClearQueue(sessionID string)
54 Summarize(context.Context, string, fantasy.ProviderOptions) error
55 Model() Model
56}
57
58type Model struct {
59 Model fantasy.LanguageModel
60 CatwalkCfg catwalk.Model
61 ModelCfg config.SelectedModel
62}
63
64type sessionAgent struct {
65 largeModel Model
66 smallModel Model
67 systemPrompt string
68 tools []fantasy.AgentTool
69 sessions session.Service
70 messages message.Service
71 disableAutoSummarize bool
72
73 messageQueue *csync.Map[string, []SessionAgentCall]
74 activeRequests *csync.Map[string, context.CancelFunc]
75}
76
77type SessionAgentOptions struct {
78 LargeModel Model
79 SmallModel Model
80 SystemPrompt string
81 DisableAutoSummarize bool
82 Sessions session.Service
83 Messages message.Service
84 Tools []fantasy.AgentTool
85}
86
87func NewSessionAgent(
88 opts SessionAgentOptions,
89) SessionAgent {
90 return &sessionAgent{
91 largeModel: opts.LargeModel,
92 smallModel: opts.SmallModel,
93 systemPrompt: opts.SystemPrompt,
94 sessions: opts.Sessions,
95 messages: opts.Messages,
96 disableAutoSummarize: opts.DisableAutoSummarize,
97 tools: opts.Tools,
98 messageQueue: csync.NewMap[string, []SessionAgentCall](),
99 activeRequests: csync.NewMap[string, context.CancelFunc](),
100 }
101}
102
103func (a *sessionAgent) Run(ctx context.Context, call SessionAgentCall) (*fantasy.AgentResult, error) {
104 if call.Prompt == "" {
105 return nil, ErrEmptyPrompt
106 }
107 if call.SessionID == "" {
108 return nil, ErrSessionMissing
109 }
110
111 // Queue the message if busy
112 if a.IsSessionBusy(call.SessionID) {
113 existing, ok := a.messageQueue.Get(call.SessionID)
114 if !ok {
115 existing = []SessionAgentCall{}
116 }
117 existing = append(existing, call)
118 a.messageQueue.Set(call.SessionID, existing)
119 return nil, nil
120 }
121
122 if len(a.tools) > 0 {
123 // add anthropic caching to the last tool
124 a.tools[len(a.tools)-1].SetProviderOptions(a.getCacheControlOptions())
125 }
126
127 agent := fantasy.NewAgent(
128 a.largeModel.Model,
129 fantasy.WithSystemPrompt(a.systemPrompt),
130 fantasy.WithTools(a.tools...),
131 )
132
133 sessionLock := sync.Mutex{}
134 currentSession, err := a.sessions.Get(ctx, call.SessionID)
135 if err != nil {
136 return nil, fmt.Errorf("failed to get session: %w", err)
137 }
138
139 msgs, err := a.getSessionMessages(ctx, currentSession)
140 if err != nil {
141 return nil, fmt.Errorf("failed to get session messages: %w", err)
142 }
143
144 var wg sync.WaitGroup
145 // Generate title if first message
146 if len(msgs) == 0 {
147 wg.Go(func() {
148 sessionLock.Lock()
149 a.generateTitle(ctx, ¤tSession, call.Prompt)
150 sessionLock.Unlock()
151 })
152 }
153
154 // Add the user message to the session
155 _, err = a.createUserMessage(ctx, call)
156 if err != nil {
157 return nil, err
158 }
159
160 // add the session to the context
161 ctx = context.WithValue(ctx, tools.SessionIDContextKey, call.SessionID)
162
163 genCtx, cancel := context.WithCancel(ctx)
164 a.activeRequests.Set(call.SessionID, cancel)
165
166 defer cancel()
167 defer a.activeRequests.Del(call.SessionID)
168
169 history, files := a.preparePrompt(msgs, call.Attachments...)
170
171 var currentAssistant *message.Message
172 var shouldSummarize bool
173 result, err := agent.Stream(genCtx, fantasy.AgentStreamCall{
174 Prompt: call.Prompt,
175 Files: files,
176 Messages: history,
177 ProviderOptions: call.ProviderOptions,
178 MaxOutputTokens: &call.MaxOutputTokens,
179 TopP: call.TopP,
180 Temperature: call.Temperature,
181 PresencePenalty: call.PresencePenalty,
182 TopK: call.TopK,
183 FrequencyPenalty: call.FrequencyPenalty,
184 // Before each step create the new assistant message
185 PrepareStep: func(callContext context.Context, options fantasy.PrepareStepFunctionOptions) (_ context.Context, prepared fantasy.PrepareStepResult, err error) {
186 prepared.Messages = options.Messages
187 // reset all cached items
188 for i := range prepared.Messages {
189 prepared.Messages[i].ProviderOptions = nil
190 }
191
192 queuedCalls, _ := a.messageQueue.Get(call.SessionID)
193 a.messageQueue.Del(call.SessionID)
194 for _, queued := range queuedCalls {
195 userMessage, createErr := a.createUserMessage(callContext, queued)
196 if createErr != nil {
197 return callContext, prepared, createErr
198 }
199 prepared.Messages = append(prepared.Messages, userMessage.ToAIMessage()...)
200 }
201
202 lastSystemRoleInx := 0
203 systemMessageUpdated := false
204 for i, msg := range prepared.Messages {
205 // only add cache control to the last message
206 if msg.Role == fantasy.MessageRoleSystem {
207 lastSystemRoleInx = i
208 } else if !systemMessageUpdated {
209 prepared.Messages[lastSystemRoleInx].ProviderOptions = a.getCacheControlOptions()
210 systemMessageUpdated = true
211 }
212 // than add cache control to the last 2 messages
213 if i > len(prepared.Messages)-3 {
214 prepared.Messages[i].ProviderOptions = a.getCacheControlOptions()
215 }
216 }
217
218 var assistantMsg message.Message
219 assistantMsg, err = a.messages.Create(callContext, call.SessionID, message.CreateMessageParams{
220 Role: message.Assistant,
221 Parts: []message.ContentPart{},
222 Model: a.largeModel.ModelCfg.Model,
223 Provider: a.largeModel.ModelCfg.Provider,
224 })
225 if err != nil {
226 return callContext, prepared, err
227 }
228 callContext = context.WithValue(callContext, tools.MessageIDContextKey, assistantMsg.ID)
229 currentAssistant = &assistantMsg
230 return callContext, prepared, err
231 },
232 OnReasoningDelta: func(id string, text string) error {
233 currentAssistant.AppendReasoningContent(text)
234 return a.messages.Update(genCtx, *currentAssistant)
235 },
236 OnReasoningEnd: func(id string, reasoning fantasy.ReasoningContent) error {
237 // handle anthropic signature
238 if anthropicData, ok := reasoning.ProviderMetadata[anthropic.Name]; ok {
239 if reasoning, ok := anthropicData.(*anthropic.ReasoningOptionMetadata); ok {
240 currentAssistant.AppendReasoningSignature(reasoning.Signature)
241 }
242 }
243 if openaiData, ok := reasoning.ProviderMetadata[openai.Name]; ok {
244 if reasoning, ok := openaiData.(*openai.ResponsesReasoningMetadata); ok {
245 currentAssistant.SetReasoningResponsesData(reasoning)
246 }
247 }
248 currentAssistant.FinishThinking()
249 return a.messages.Update(genCtx, *currentAssistant)
250 },
251 OnTextDelta: func(id string, text string) error {
252 currentAssistant.AppendContent(text)
253 return a.messages.Update(genCtx, *currentAssistant)
254 },
255 OnToolInputStart: func(id string, toolName string) error {
256 toolCall := message.ToolCall{
257 ID: id,
258 Name: toolName,
259 ProviderExecuted: false,
260 Finished: false,
261 }
262 currentAssistant.AddToolCall(toolCall)
263 return a.messages.Update(genCtx, *currentAssistant)
264 },
265 OnRetry: func(err *fantasy.APICallError, delay time.Duration) {
266 // TODO: implement
267 },
268 OnToolCall: func(tc fantasy.ToolCallContent) error {
269 toolCall := message.ToolCall{
270 ID: tc.ToolCallID,
271 Name: tc.ToolName,
272 Input: tc.Input,
273 ProviderExecuted: false,
274 Finished: true,
275 }
276 currentAssistant.AddToolCall(toolCall)
277 return a.messages.Update(genCtx, *currentAssistant)
278 },
279 OnToolResult: func(result fantasy.ToolResultContent) error {
280 var resultContent string
281 isError := false
282 switch result.Result.GetType() {
283 case fantasy.ToolResultContentTypeText:
284 r, ok := fantasy.AsToolResultOutputType[fantasy.ToolResultOutputContentText](result.Result)
285 if ok {
286 resultContent = r.Text
287 }
288 case fantasy.ToolResultContentTypeError:
289 r, ok := fantasy.AsToolResultOutputType[fantasy.ToolResultOutputContentError](result.Result)
290 if ok {
291 isError = true
292 resultContent = r.Error.Error()
293 }
294 case fantasy.ToolResultContentTypeMedia:
295 // TODO: handle this message type
296 }
297 toolResult := message.ToolResult{
298 ToolCallID: result.ToolCallID,
299 Name: result.ToolName,
300 Content: resultContent,
301 IsError: isError,
302 Metadata: result.ClientMetadata,
303 }
304 _, createMsgErr := a.messages.Create(genCtx, currentAssistant.SessionID, message.CreateMessageParams{
305 Role: message.Tool,
306 Parts: []message.ContentPart{
307 toolResult,
308 },
309 })
310 if createMsgErr != nil {
311 return createMsgErr
312 }
313 return nil
314 },
315 OnStepFinish: func(stepResult fantasy.StepResult) error {
316 finishReason := message.FinishReasonUnknown
317 switch stepResult.FinishReason {
318 case fantasy.FinishReasonLength:
319 finishReason = message.FinishReasonMaxTokens
320 case fantasy.FinishReasonStop:
321 finishReason = message.FinishReasonEndTurn
322 case fantasy.FinishReasonToolCalls:
323 finishReason = message.FinishReasonToolUse
324 }
325 currentAssistant.AddFinish(finishReason, "", "")
326 a.updateSessionUsage(a.largeModel, ¤tSession, stepResult.Usage)
327 sessionLock.Lock()
328 _, sessionErr := a.sessions.Save(genCtx, currentSession)
329 sessionLock.Unlock()
330 if sessionErr != nil {
331 return sessionErr
332 }
333 return a.messages.Update(genCtx, *currentAssistant)
334 },
335 StopWhen: []fantasy.StopCondition{
336 func(_ []fantasy.StepResult) bool {
337 contextWindow := a.largeModel.CatwalkCfg.ContextWindow
338 tokens := currentSession.CompletionTokens + currentSession.PromptTokens
339 percentage := (float64(tokens) / float64(contextWindow)) * 100
340 if (percentage > 80) && !a.disableAutoSummarize {
341 shouldSummarize = true
342 return true
343 }
344 return false
345 },
346 },
347 })
348 if err != nil {
349 isCancelErr := errors.Is(err, context.Canceled)
350 isPermissionErr := errors.Is(err, permission.ErrorPermissionDenied)
351 if currentAssistant == nil {
352 return result, err
353 }
354 // Ensure we finish thinking on error to close the reasoning state
355 currentAssistant.FinishThinking()
356 toolCalls := currentAssistant.ToolCalls()
357 // INFO: we use the parent context here because the genCtx has been cancelled
358 msgs, createErr := a.messages.List(ctx, currentAssistant.SessionID)
359 if createErr != nil {
360 return nil, createErr
361 }
362 for _, tc := range toolCalls {
363 if !tc.Finished {
364 tc.Finished = true
365 tc.Input = "{}"
366 currentAssistant.AddToolCall(tc)
367 updateErr := a.messages.Update(ctx, *currentAssistant)
368 if updateErr != nil {
369 return nil, updateErr
370 }
371 }
372
373 found := false
374 for _, msg := range msgs {
375 if msg.Role == message.Tool {
376 for _, tr := range msg.ToolResults() {
377 if tr.ToolCallID == tc.ID {
378 found = true
379 break
380 }
381 }
382 }
383 if found {
384 break
385 }
386 }
387 if found {
388 continue
389 }
390 content := "There was an error while executing the tool"
391 if isCancelErr {
392 content = "Tool execution canceled by user"
393 } else if isPermissionErr {
394 content = "Permission denied"
395 }
396 toolResult := message.ToolResult{
397 ToolCallID: tc.ID,
398 Name: tc.Name,
399 Content: content,
400 IsError: true,
401 }
402 _, createErr = a.messages.Create(context.Background(), currentAssistant.SessionID, message.CreateMessageParams{
403 Role: message.Tool,
404 Parts: []message.ContentPart{
405 toolResult,
406 },
407 })
408 if createErr != nil {
409 return nil, createErr
410 }
411 }
412 if isCancelErr {
413 currentAssistant.AddFinish(message.FinishReasonCanceled, "Request cancelled", "")
414 } else if isPermissionErr {
415 currentAssistant.AddFinish(message.FinishReasonPermissionDenied, "Permission denied", "")
416 } else {
417 currentAssistant.AddFinish(message.FinishReasonError, "API Error", err.Error())
418 }
419 // INFO: we use the parent context here because the genCtx has been cancelled
420 updateErr := a.messages.Update(ctx, *currentAssistant)
421 if updateErr != nil {
422 return nil, updateErr
423 }
424 return nil, err
425 }
426 wg.Wait()
427
428 if shouldSummarize {
429 a.activeRequests.Del(call.SessionID)
430 if summarizeErr := a.Summarize(genCtx, call.SessionID, call.ProviderOptions); summarizeErr != nil {
431 return nil, summarizeErr
432 }
433 }
434
435 // release active request before processing queued messages
436 a.activeRequests.Del(call.SessionID)
437 cancel()
438
439 queuedMessages, ok := a.messageQueue.Get(call.SessionID)
440 if !ok || len(queuedMessages) == 0 {
441 return result, err
442 }
443 // there are queued messages restart the loop
444 firstQueuedMessage := queuedMessages[0]
445 a.messageQueue.Set(call.SessionID, queuedMessages[1:])
446 return a.Run(ctx, firstQueuedMessage)
447}
448
449func (a *sessionAgent) Summarize(ctx context.Context, sessionID string, opts fantasy.ProviderOptions) error {
450 if a.IsSessionBusy(sessionID) {
451 return ErrSessionBusy
452 }
453
454 currentSession, err := a.sessions.Get(ctx, sessionID)
455 if err != nil {
456 return fmt.Errorf("failed to get session: %w", err)
457 }
458 msgs, err := a.getSessionMessages(ctx, currentSession)
459 if err != nil {
460 return err
461 }
462 if len(msgs) == 0 {
463 // nothing to summarize
464 return nil
465 }
466
467 aiMsgs, _ := a.preparePrompt(msgs)
468
469 genCtx, cancel := context.WithCancel(ctx)
470 a.activeRequests.Set(sessionID, cancel)
471 defer a.activeRequests.Del(sessionID)
472 defer cancel()
473
474 agent := fantasy.NewAgent(a.largeModel.Model,
475 fantasy.WithSystemPrompt(string(summaryPrompt)),
476 )
477 summaryMessage, err := a.messages.Create(ctx, sessionID, message.CreateMessageParams{
478 Role: message.Assistant,
479 Model: a.largeModel.Model.Model(),
480 Provider: a.largeModel.Model.Provider(),
481 IsSummaryMessage: true,
482 })
483 if err != nil {
484 return err
485 }
486
487 resp, err := agent.Stream(genCtx, fantasy.AgentStreamCall{
488 Prompt: "Provide a detailed summary of our conversation above.",
489 Messages: aiMsgs,
490 ProviderOptions: opts,
491 OnReasoningDelta: func(id string, text string) error {
492 summaryMessage.AppendReasoningContent(text)
493 return a.messages.Update(genCtx, summaryMessage)
494 },
495 OnReasoningEnd: func(id string, reasoning fantasy.ReasoningContent) error {
496 // handle anthropic signature
497 if anthropicData, ok := reasoning.ProviderMetadata["anthropic"]; ok {
498 if signature, ok := anthropicData.(*anthropic.ReasoningOptionMetadata); ok && signature.Signature != "" {
499 summaryMessage.AppendReasoningSignature(signature.Signature)
500 }
501 }
502 summaryMessage.FinishThinking()
503 return a.messages.Update(genCtx, summaryMessage)
504 },
505 OnTextDelta: func(id, text string) error {
506 summaryMessage.AppendContent(text)
507 return a.messages.Update(genCtx, summaryMessage)
508 },
509 })
510 if err != nil {
511 isCancelErr := errors.Is(err, context.Canceled)
512 if isCancelErr {
513 // User cancelled summarize we need to remove the summary message
514 deleteErr := a.messages.Delete(ctx, summaryMessage.ID)
515 return deleteErr
516 }
517 return err
518 }
519
520 summaryMessage.AddFinish(message.FinishReasonEndTurn, "", "")
521 err = a.messages.Update(genCtx, summaryMessage)
522 if err != nil {
523 return err
524 }
525
526 a.updateSessionUsage(a.largeModel, ¤tSession, resp.TotalUsage)
527
528 // just in case get just the last usage
529 usage := resp.Response.Usage
530 currentSession.SummaryMessageID = summaryMessage.ID
531 currentSession.CompletionTokens = usage.OutputTokens
532 currentSession.PromptTokens = 0
533 _, err = a.sessions.Save(genCtx, currentSession)
534 return err
535}
536
537func (a *sessionAgent) getCacheControlOptions() fantasy.ProviderOptions {
538 return fantasy.ProviderOptions{
539 anthropic.Name: &anthropic.ProviderCacheControlOptions{
540 CacheControl: anthropic.CacheControl{Type: "ephemeral"},
541 },
542 }
543}
544
545func (a *sessionAgent) createUserMessage(ctx context.Context, call SessionAgentCall) (message.Message, error) {
546 var attachmentParts []message.ContentPart
547 for _, attachment := range call.Attachments {
548 attachmentParts = append(attachmentParts, message.BinaryContent{Path: attachment.FilePath, MIMEType: attachment.MimeType, Data: attachment.Content})
549 }
550 parts := []message.ContentPart{message.TextContent{Text: call.Prompt}}
551 parts = append(parts, attachmentParts...)
552 msg, err := a.messages.Create(ctx, call.SessionID, message.CreateMessageParams{
553 Role: message.User,
554 Parts: parts,
555 })
556 if err != nil {
557 return message.Message{}, fmt.Errorf("failed to create user message: %w", err)
558 }
559 return msg, nil
560}
561
562func (a *sessionAgent) preparePrompt(msgs []message.Message, attachments ...message.Attachment) ([]fantasy.Message, []fantasy.FilePart) {
563 var history []fantasy.Message
564 for _, m := range msgs {
565 if len(m.Parts) == 0 {
566 continue
567 }
568 // Assistant message without content or tool calls (cancelled before it returned anything)
569 if m.Role == message.Assistant && len(m.ToolCalls()) == 0 && m.Content().Text == "" && m.ReasoningContent().String() == "" {
570 continue
571 }
572 history = append(history, m.ToAIMessage()...)
573 }
574
575 var files []fantasy.FilePart
576 for _, attachment := range attachments {
577 files = append(files, fantasy.FilePart{
578 Filename: attachment.FileName,
579 Data: attachment.Content,
580 MediaType: attachment.MimeType,
581 })
582 }
583
584 return history, files
585}
586
587func (a *sessionAgent) getSessionMessages(ctx context.Context, session session.Session) ([]message.Message, error) {
588 msgs, err := a.messages.List(ctx, session.ID)
589 if err != nil {
590 return nil, fmt.Errorf("failed to list messages: %w", err)
591 }
592
593 if session.SummaryMessageID != "" {
594 summaryMsgInex := -1
595 for i, msg := range msgs {
596 if msg.ID == session.SummaryMessageID {
597 summaryMsgInex = i
598 break
599 }
600 }
601 if summaryMsgInex != -1 {
602 msgs = msgs[summaryMsgInex:]
603 msgs[0].Role = message.User
604 }
605 }
606 return msgs, nil
607}
608
609func (a *sessionAgent) generateTitle(ctx context.Context, session *session.Session, prompt string) {
610 if prompt == "" {
611 return
612 }
613
614 var maxOutput int64 = 40
615 if a.smallModel.CatwalkCfg.CanReason {
616 maxOutput = a.smallModel.CatwalkCfg.DefaultMaxTokens
617 }
618
619 agent := fantasy.NewAgent(a.smallModel.Model,
620 fantasy.WithSystemPrompt(string(titlePrompt)+"\n /no_think"),
621 fantasy.WithMaxOutputTokens(maxOutput),
622 )
623
624 resp, err := agent.Stream(ctx, fantasy.AgentStreamCall{
625 Prompt: fmt.Sprintf("Generate a concise title for the following content:\n\n%s\n <think>\n\n</think>", prompt),
626 })
627 if err != nil {
628 slog.Error("error generating title", "err", err)
629 return
630 }
631
632 title := resp.Response.Content.Text()
633
634 title = strings.ReplaceAll(title, "\n", " ")
635
636 // remove thinking tags if present
637 if idx := strings.Index(title, "</think>"); idx > 0 {
638 title = title[idx+len("</think>"):]
639 }
640
641 title = strings.TrimSpace(title)
642 if title == "" {
643 slog.Warn("failed to generate title", "warn", "empty title")
644 return
645 }
646
647 session.Title = title
648 a.updateSessionUsage(a.smallModel, session, resp.TotalUsage)
649 _, saveErr := a.sessions.Save(ctx, *session)
650 if saveErr != nil {
651 slog.Error("failed to save session title & usage", "error", saveErr)
652 return
653 }
654}
655
656func (a *sessionAgent) updateSessionUsage(model Model, session *session.Session, usage fantasy.Usage) {
657 modelConfig := model.CatwalkCfg
658 cost := modelConfig.CostPer1MInCached/1e6*float64(usage.CacheCreationTokens) +
659 modelConfig.CostPer1MOutCached/1e6*float64(usage.CacheReadTokens) +
660 modelConfig.CostPer1MIn/1e6*float64(usage.InputTokens) +
661 modelConfig.CostPer1MOut/1e6*float64(usage.OutputTokens)
662 session.Cost += cost
663 session.CompletionTokens = usage.OutputTokens + usage.CacheReadTokens
664 session.PromptTokens = usage.InputTokens + usage.CacheCreationTokens
665}
666
667func (a *sessionAgent) Cancel(sessionID string) {
668 // Cancel regular requests
669 if cancel, ok := a.activeRequests.Take(sessionID); ok && cancel != nil {
670 slog.Info("Request cancellation initiated", "session_id", sessionID)
671 cancel()
672 }
673
674 // Also check for summarize requests
675 if cancel, ok := a.activeRequests.Take(sessionID + "-summarize"); ok && cancel != nil {
676 slog.Info("Summarize cancellation initiated", "session_id", sessionID)
677 cancel()
678 }
679
680 if a.QueuedPrompts(sessionID) > 0 {
681 slog.Info("Clearing queued prompts", "session_id", sessionID)
682 a.messageQueue.Del(sessionID)
683 }
684}
685
686func (a *sessionAgent) ClearQueue(sessionID string) {
687 if a.QueuedPrompts(sessionID) > 0 {
688 slog.Info("Clearing queued prompts", "session_id", sessionID)
689 a.messageQueue.Del(sessionID)
690 }
691}
692
693func (a *sessionAgent) CancelAll() {
694 if !a.IsBusy() {
695 return
696 }
697 for key := range a.activeRequests.Seq2() {
698 a.Cancel(key) // key is sessionID
699 }
700
701 timeout := time.After(5 * time.Second)
702 for a.IsBusy() {
703 select {
704 case <-timeout:
705 return
706 default:
707 time.Sleep(200 * time.Millisecond)
708 }
709 }
710}
711
712func (a *sessionAgent) IsBusy() bool {
713 var busy bool
714 for cancelFunc := range a.activeRequests.Seq() {
715 if cancelFunc != nil {
716 busy = true
717 break
718 }
719 }
720 return busy
721}
722
723func (a *sessionAgent) IsSessionBusy(sessionID string) bool {
724 _, busy := a.activeRequests.Get(sessionID)
725 return busy
726}
727
728func (a *sessionAgent) QueuedPrompts(sessionID string) int {
729 l, ok := a.messageQueue.Get(sessionID)
730 if !ok {
731 return 0
732 }
733 return len(l)
734}
735
736func (a *sessionAgent) SetModels(large Model, small Model) {
737 a.largeModel = large
738 a.smallModel = small
739}
740
741func (a *sessionAgent) SetTools(tools []fantasy.AgentTool) {
742 a.tools = tools
743}
744
745func (a *sessionAgent) Model() Model {
746 return a.largeModel
747}