ai-agent/internal/ai/runtime/service.go

package runtime

import (
	"context"
	"encoding/json"
	"strings"

	"cs-agent/internal/ai/runtime/internal/engine"
	"cs-agent/internal/ai/runtime/registry"
	"cs-agent/internal/ai/runtime/tools"
	"cs-agent/internal/ai/skills"
	"cs-agent/internal/models"
)

var Service = newService()

func newService() *service {
	return &service{
		runtime: engine.NewService(),
		registry: registry.NewRegistry(
			tools.NewCreateTicketConfirmTool(),
		),
	}
}

type service struct {
	runtime  *engine.Service
	registry *registry.Registry
}

func (s *service) Run(ctx context.Context, req Request) (*Summary, error) {
	selectedSkill, skillReason, skillTrace, skillErr := s.selectSkill(ctx, req)
	req.SelectedSkill = selectedSkill
	req.SkillRouteReason = skillReason
	req.SkillRouteTrace = skillTrace
	if req.SelectedSkill != nil {
		req.SelectedSkill = cloneSkillDefinition(req.SelectedSkill)
	}
	if err := s.prepareToolsForRun(&req); err != nil {
		return nil, err
	}
	summary, err := s.runtime.Run(ctx, engine.Request{
		Conversation:     req.Conversation,
		UserMessage:      req.UserMessage,
		AIAgent:          req.AIAgent,
		AIConfig:         req.AIConfig,
		SelectedSkill:    req.SelectedSkill,
		SkillRouteReason: req.SkillRouteReason,
		SkillRouteTrace:  req.SkillRouteTrace,
		CheckPointID:     req.CheckPointID,
		ExtraTools:       req.ExtraTools,
		ExtraToolCodes:   req.ExtraToolCodes,
	})
	if err != nil {
		ret := toSummary(summary)
		if ret != nil && skillErr != nil && strings.TrimSpace(ret.PlanReason) == "" {
			ret.PlanReason = "skill_failed_fallback_runtime"
		}
		return ret, err
	}
	ret := toSummary(summary)
	if ret != nil && skillErr != nil && strings.TrimSpace(ret.PlanReason) == "" {
		ret.PlanReason = "skill_failed_fallback_runtime"
	}
	return ret, nil
}

func (s *service) Resume(ctx context.Context, req ResumeRequest) (*Summary, error) {
	if err := s.prepareToolsForResume(&req); err != nil {
		return nil, err
	}
	summary, err := s.runtime.Resume(ctx, engine.ResumeRequest{
		Conversation:   req.Conversation,
		AIAgent:        req.AIAgent,
		AIConfig:       req.AIConfig,
		CheckPointID:   req.CheckPointID,
		ResumeData:     req.ResumeData,
		ExtraTools:     req.ExtraTools,
		ExtraToolCodes: req.ExtraToolCodes,
	})
	if err != nil {
		return toSummary(summary), err
	}
	return toSummary(summary), nil
}

func (s *service) prepareToolsForRun(req *Request) error {
	if req == nil || len(req.ExtraTools) > 0 || len(req.ExtraToolCodes) > 0 || s.registry == nil {
		return nil
	}
	toolSet, err := s.registry.Resolve(registry.Context{
		Conversation: req.Conversation,
		AIAgent:      req.AIAgent,
		AIConfig:     req.AIConfig,
		UserMessage:  req.UserMessage,
	})
	if err != nil {
		return err
	}
	req.ExtraTools = toolSet.Tools
	req.ExtraToolCodes = toolSet.ToolCodes
	return nil
}

func (s *service) prepareToolsForResume(req *ResumeRequest) error {
	if req == nil || len(req.ExtraTools) > 0 || len(req.ExtraToolCodes) > 0 || s.registry == nil {
		return nil
	}
	toolSet, err := s.registry.Resolve(registry.Context{
		Conversation: req.Conversation,
		AIAgent:      req.AIAgent,
		AIConfig:     req.AIConfig,
	})
	if err != nil {
		return err
	}
	req.ExtraTools = toolSet.Tools
	req.ExtraToolCodes = toolSet.ToolCodes
	return nil
}

func toSummary(summary *engine.Summary) *Summary {
	if summary == nil {
		return nil
	}
	ret := &Summary{
		RunID:                 summary.RunID,
		Status:                summary.Status,
		ReplyText:             summary.ReplyText,
		PlannedSkillCode:      strings.TrimSpace(summary.SelectedSkillCode),
		PlannedSkillName:      strings.TrimSpace(summary.SelectedSkillName),
		PlanReason:            strings.TrimSpace(summary.SkillRouteReason),
		SkillRouteTrace:       strings.TrimSpace(summary.SkillRouteTrace),
		SkillAllowedToolCodes: append([]string(nil), summary.SkillAllowedToolCodes...),
		ModelName:             summary.ModelName,
		PromptTokens:          summary.PromptTokens,
		CompletionTokens:      summary.CompletionTokens,
		HistoryMessageCount:   summary.HistoryMessageCount,
		RetrieverCount:        summary.RetrieverCount,
		ToolCallCount:         summary.ToolCallCount,
		ToolCodes:             append([]string(nil), summary.ToolCodes...),
		InvokedToolCodes:      append([]string(nil), summary.InvokedToolCodes...),
		CheckPointID:          summary.CheckPointID,
		Interrupted:           summary.Interrupted,
		TraceData:             summary.TraceData,
		ErrorMessage:          summary.ErrorMessage,
	}
	if len(summary.Interrupts) > 0 {
		ret.Interrupts = make([]InterruptContextSummary, 0, len(summary.Interrupts))
		for _, item := range summary.Interrupts {
			ret.Interrupts = append(ret.Interrupts, InterruptContextSummary{
				Type:        item.Type,
				ID:          item.ID,
				InfoPreview: item.InfoPreview,
			})
		}
	}
	return ret
}

func (s *service) selectSkill(ctx context.Context, req Request) (*models.SkillDefinition, string, string, error) {
	if req.AIAgent == nil || req.AIConfig == nil || req.UserMessage == nil || req.Conversation == nil {
		return nil, "", "", nil
	}
	result, err := skills.Select(ctx, skills.RuntimeContext{
		AIAgentID:       req.AIAgent.ID,
		UserMessage:     strings.TrimSpace(req.UserMessage.Content),
		ConversationID:  req.Conversation.ID,
		ManualSkillCode: strings.TrimSpace(req.ManualSkillCode),
	})
	if err != nil {
		return nil, "", "", err
	}
	if result == nil || result.Plan == nil || result.Plan.Skill == nil {
		traceData := marshalSkillRouteTrace(result)
		reason := ""
		if result != nil && result.Plan != nil {
			reason = strings.TrimSpace(result.Plan.MatchReason)
		}
		return nil, reason, traceData, nil
	}
	return result.Plan.Skill, strings.TrimSpace(result.Plan.MatchReason), marshalSkillRouteTrace(result), nil
}

func marshalSkillRouteTrace(result *skills.ExecutionResult) string {
	if result == nil || result.Plan == nil || result.Plan.RouteTrace == nil {
		return ""
	}
	buf, err := json.Marshal(result.Plan.RouteTrace)
	if err != nil {
		return ""
	}
	return string(buf)
}

func cloneSkillDefinition(item *models.SkillDefinition) *models.SkillDefinition {
	if item == nil {
		return nil
	}
	clone := *item
	return &clone
}