Add some 404s

back/store.go

@@ -12,6 +12,8 @@ import (
 	"github.com/rickb777/date"
 )
 
+var ErrNotFound = errors.New("not found")
+
 type GenString func(length int) (string, error)
 
 type Store struct {
@@ -211,8 +213,7 @@ func (s *Store) GetEventMetadata(ctx context.Context, query GetEventMetadataQuer
 		return GetEventMetadataResult{}, err
 	}
 	if !found {
-		// TODO return a constant or a specific error type for Not Found
-		return GetEventMetadataResult{}, errors.New("not found")
+		return GetEventMetadataResult{}, ErrNotFound
 	}
 	return result, nil
 }
@@ -246,7 +247,7 @@ func (s *Store) GetEventResponseSummary(ctx context.Context, query GetEventRespo
 		return GetEventResponseSummaryResult{}, err
 	}
 	if !found {
-		return GetEventResponseSummaryResult{}, errors.New("event not found")
+		return GetEventResponseSummaryResult{}, ErrNotFound
 	}
 
 	var result GetEventResponseSummaryResult
@@ -351,8 +352,7 @@ func (s *Store) GetEventResponse(ctx context.Context, query GetEventResponseQuer
 		return GetEventResponseResult{}, err
 	}
 	if !found {
-		// TODO return a constant or typed error
-		return GetEventResponseResult{}, errors.New("not found")
+		return GetEventResponseResult{}, ErrNotFound
 	}
 
 	result.DateHours = make(map[date.Date]map[int]struct{})