users: handle getting new user if old one is gone

frontend/src/api.js

@@ -4,8 +4,8 @@ export default {
     getMoods(userInfo) {
         return axios.get("/v1/moods", {
             headers: {
-                'X-user-id': userInfo ? userInfo.ID : null,
-                'X-user-validation': userInfo ? userInfo.Validation : null
+                'X-user-id': userInfo.ID,
+                'X-user-validation': userInfo.Validation
             }
         })
     },
@@ -18,6 +18,14 @@ export default {
         })
     },
     getNewUser() {
-        return axios.get("/v1/register/code")
+        return axios.get("/v1/user/code")
+    },
+    getUserInfo(userInfo) {
+        return axios.get("/v1/user/info", {
+            headers: {
+                'X-user-id': userInfo.ID,
+                'X-user-validation': userInfo.Validation
+            }
+        })
     }
 }

frontend/src/components/UserInfo.vue

@@ -24,6 +24,10 @@
                         });
                 } else {
                     this.$store.commit('setUser', userInfo);
+                    this.$store.dispatch('getUserInfo', userInfo)
+                        .catch(() => {
+                            this.logOut();
+                        })
                 }
             },
             logOut: function () {

frontend/src/store.js

@@ -8,7 +8,7 @@ Vue.use(Vuex);
 const store = new Vuex.Store({
     state: {
         errs: [],
-        userInfo: null,
+        userInfo: {ID: "", Validation: ""},
         moods: [],
     },
     actions: {
@@ -24,6 +24,12 @@ const store = new Vuex.Store({
                     commit('setUser', resp.data);
                 })
         },
+        getUserInfo({state}, userInfo) {
+            if (userInfo)
+                return api.getUserInfo(userInfo)
+            else
+                return api.getUserInfo(state.userInfo)
+        },
         setMood({state}, mood) {
             return api.setMood(state.userInfo, mood)
         },

serve.go

@@ -187,6 +187,9 @@ func (s *server) NewUserID() (UserID, error) {
 
 func (s *server) FromStr(uid, verification string) (UserID, error) {
 	id := UserID{db: s.db}
+	if uid == "" || verification == "" {
+		return id, fmt.Errorf("user ID and verification not given.")
+	}
 	idInt, err := s.h.DecodeInt64WithError(uid)
 	if err != nil {
 		return id, err
@@ -289,6 +292,30 @@ func (s *server) getMoods(w http.ResponseWriter, r *http.Request) {
 	fmt.Fprintf(w, "%s", string(resp))
 }
 
+func (s *server) checkUser(w http.ResponseWriter, r *http.Request) {
+	uid := r.Header.Get("X-user-id")
+	verify := r.Header.Get("X-user-validation")
+	log.Debug().
+		Str("uid", uid).
+		Str("verify", verify).
+		Msg("checkUser")
+	user, err := s.FromStr(uid, verify)
+	if err != nil {
+		log.Error().Err(err).Msg("user not known")
+		w.WriteHeader(http.StatusUnauthorized)
+		fmt.Fprint(w, "User not known")
+		return
+	}
+	j, err := json.Marshal(user)
+	if err != nil {
+		w.WriteHeader(500)
+		log.Error().Err(err).Msg("could not marshal user")
+		fmt.Fprintf(w, "%s", err)
+		return
+	}
+	w.Write(j)
+}
+
 func (s *server) handleMood(w http.ResponseWriter, r *http.Request) {
 	uid := r.Header.Get("X-user-id")
 	verify := r.Header.Get("X-user-validation")
@@ -364,7 +391,8 @@ func (s *server) routeSetup() *mux.Router {
 	api := r.PathPrefix("/v1/").Subrouter()
 	api.HandleFunc("/moods", s.getMoods).Methods("GET")
 	api.HandleFunc("/moods", s.handleMood).Methods("POST")
-	api.HandleFunc("/register/code", s.handlerRegisterCode).Methods("GET")
+	api.HandleFunc("/user/code", s.handlerRegisterCode).Methods("GET")
+	api.HandleFunc("/user/info", s.checkUser).Methods("GET")
 	r.PathPrefix("/").HandlerFunc(s.indexHandler("/index.html"))
 	return r
 }