Add backend foundation and config-driven workbench

backend/internal/service/result_service.go

@@ -0,0 +1,94 @@
+package service
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+
+	"cmr-backend/internal/apperr"
+	"cmr-backend/internal/store/postgres"
+)
+
+type ResultService struct {
+	store *postgres.Store
+}
+
+type SessionResultView struct {
+	Session EntrySessionSummary  `json:"session"`
+	Result  ResultSummaryPayload `json:"result"`
+}
+
+type ResultSummaryPayload struct {
+	Status            string         `json:"status"`
+	FinalDurationSec  *int           `json:"finalDurationSec,omitempty"`
+	FinalScore        *int           `json:"finalScore,omitempty"`
+	CompletedControls *int           `json:"completedControls,omitempty"`
+	TotalControls     *int           `json:"totalControls,omitempty"`
+	DistanceMeters    *float64       `json:"distanceMeters,omitempty"`
+	AverageSpeedKmh   *float64       `json:"averageSpeedKmh,omitempty"`
+	MaxHeartRateBpm   *int           `json:"maxHeartRateBpm,omitempty"`
+	Summary           map[string]any `json:"summary,omitempty"`
+}
+
+func NewResultService(store *postgres.Store) *ResultService {
+	return &ResultService{store: store}
+}
+
+func (s *ResultService) GetSessionResult(ctx context.Context, sessionPublicID, userID string) (*SessionResultView, error) {
+	record, err := s.store.GetSessionResultByPublicID(ctx, sessionPublicID)
+	if err != nil {
+		return nil, err
+	}
+	if record == nil {
+		return nil, apperr.New(http.StatusNotFound, "session_not_found", "session not found")
+	}
+	if userID != "" && record.UserID != userID {
+		return nil, apperr.New(http.StatusForbidden, "session_forbidden", "session does not belong to current user")
+	}
+	return buildSessionResultView(record), nil
+}
+
+func (s *ResultService) ListMyResults(ctx context.Context, userID string, limit int) ([]SessionResultView, error) {
+	if userID == "" {
+		return nil, apperr.New(http.StatusUnauthorized, "unauthorized", "user is required")
+	}
+
+	records, err := s.store.ListSessionResultsByUserID(ctx, userID, limit)
+	if err != nil {
+		return nil, err
+	}
+
+	results := make([]SessionResultView, 0, len(records))
+	for i := range records {
+		results = append(results, *buildSessionResultView(&records[i]))
+	}
+	return results, nil
+}
+
+func buildSessionResultView(record *postgres.SessionResultRecord) *SessionResultView {
+	view := &SessionResultView{
+		Session: buildEntrySessionSummary(&record.Session),
+		Result: ResultSummaryPayload{
+			Status: record.Status,
+		},
+	}
+
+	if record.Result != nil {
+		view.Result.Status = record.Result.ResultStatus
+		view.Result.FinalDurationSec = record.Result.FinalDurationSec
+		view.Result.FinalScore = record.Result.FinalScore
+		view.Result.CompletedControls = record.Result.CompletedControls
+		view.Result.TotalControls = record.Result.TotalControls
+		view.Result.DistanceMeters = record.Result.DistanceMeters
+		view.Result.AverageSpeedKmh = record.Result.AverageSpeedKmh
+		view.Result.MaxHeartRateBpm = record.Result.MaxHeartRateBpm
+		if record.Result.SummaryJSON != "" {
+			summary := map[string]any{}
+			if err := json.Unmarshal([]byte(record.Result.SummaryJSON), &summary); err == nil && len(summary) > 0 {
+				view.Result.Summary = summary
+			}
+		}
+	}
+
+	return view
+}