fix api nil reference error

go.mod

@@ -6,6 +6,7 @@ require (
 	github.com/Nerzal/gocloak/v13 v13.9.0
 	github.com/coreos/go-oidc v2.2.1+incompatible
 	github.com/golang-jwt/jwt/v5 v5.0.0
+	github.com/google/jsonapi v1.0.0
 	github.com/google/uuid v1.3.0
 	github.com/gorilla/mux v1.8.0
 	github.com/mattn/go-sqlite3 v1.14.19
@@ -26,7 +27,6 @@ require (
 	github.com/go-resty/resty/v2 v2.7.0 // indirect
 	github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
-	github.com/google/jsonapi v1.0.0 // indirect
 	github.com/googleapis/enterprise-certificate-proxy v0.2.1 // indirect
 	github.com/googleapis/gax-go/v2 v2.7.0 // indirect
 	github.com/kr/text v0.2.0 // indirect

pkg/pizza/server_api.go

@@ -125,10 +125,13 @@ func (s *Server) HandleAPIGetFriday(token *jwt.Token, claims *TokenClaims, w htt
 		friday := &api.Friday{
 			ID:        id,
 			StartTime: f.Date,
-			Details:   *f.Details,
 			Guests:    nil,
 		}
 
+		if f.Details != nil {
+			friday.Details = *f.Details
+		}
+
 		// not part of invited group
 		if f.Group != nil && !claims.InGroup(*f.Group) {
 			// if this friday was specifically requested, the response needs to be 404