97 lines
2.8 KiB
Go
97 lines
2.8 KiB
Go
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package teachingassets
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import (
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"errors"
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"fmt"
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"strings"
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"sync/atomic"
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"time"
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"tutor/internal/ontology"
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"tutor/internal/workflows"
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)
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type Service struct {
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store Store
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ontology *ontology.Service
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imageModelKey string
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ids atomic.Uint64
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}
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func NewService(store Store, ontology *ontology.Service, imageModelKey string) *Service {
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return &Service{
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store: store,
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ontology: ontology,
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imageModelKey: imageModelKey,
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}
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}
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func (s *Service) GeneratePrompt(input GenerateInput) (PromptCandidate, error) {
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if strings.TrimSpace(input.ConceptID) == "" {
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return PromptCandidate{}, errors.New("concept_id is required")
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}
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assetType := input.AssetType
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if assetType == "" {
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assetType = workflows.AssetDiagram
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}
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concept, err := s.findConcept(input.ConceptID)
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if err != nil {
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return PromptCandidate{}, err
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}
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if len(concept.Evidence) == 0 {
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return PromptCandidate{}, errors.New("concept has no source evidence")
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}
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prompt := PromptCandidate{
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ID: s.nextID("asset-prompt"),
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Concept: concept.Concept,
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AssetType: assetType,
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Prompt: buildPrompt(concept.Concept, assetType),
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SourceEvidence: append([]workflows.EvidenceRef(nil), concept.Evidence...),
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ModelKey: s.imageModelKey,
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RequiresModelIDVerification: true,
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ReviewState: ReviewCandidate,
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CreatedAt: time.Now().UTC(),
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}
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return s.store.SavePrompt(prompt)
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}
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func (s *Service) Snapshot() Snapshot {
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return s.store.Snapshot()
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}
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func (s *Service) findConcept(id string) (ontology.ConceptCandidate, error) {
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if s.ontology == nil {
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return ontology.ConceptCandidate{}, errors.New("ontology not configured")
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}
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snapshot := s.ontology.Snapshot()
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for _, concept := range snapshot.Concepts {
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if concept.Concept.ID == id {
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return concept, nil
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}
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}
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return ontology.ConceptCandidate{}, errors.New("concept not found")
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}
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func buildPrompt(concept workflows.ConceptRef, assetType workflows.AssetType) string {
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switch assetType {
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case workflows.AssetLessonSlice:
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return "Create a concise slide-like lesson slice explaining " + concept.Label +
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" for a backend developer interview, with one example and one pitfall."
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case workflows.AssetWorksheet:
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return "Create a worksheet for practicing " + concept.Label +
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" with short prompts, answer space, and a rubric."
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case workflows.AssetInterviewCard:
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return "Create an interview explanation card for " + concept.Label +
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" with definition, production tradeoff, and follow-up question."
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default:
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return "Create a clear technical diagram explaining " + concept.Label +
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" for a backend developer interview, grounded in the provided source evidence."
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}
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}
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func (s *Service) nextID(prefix string) string {
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return fmt.Sprintf("%s-%d", prefix, s.ids.Add(1))
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}
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