feat: Implement updating the done levels

frontend/src/components/app.tsx

@@ -195,6 +195,22 @@ export default class Application extends React.Component<IProps> {
         });
     }
 
+    introDontShowAgain = (): void => {
+        // NOTE: This is not a promise, as we do not care about any response
+        //       being sent, since we don't need to update any client-side
+        //       state.
+        fetch(`${BACKEND_URL}/api/user/showWelcome`, {
+            headers: new Headers({
+                "Content-Type": "application/json",
+                "Token": this.props.user.sessionToken,
+            }),
+            method: "POST",
+            body: JSON.stringify({
+                state: false,
+            }),
+        });
+    }
+
     // TODO: Type?
     getDashboard = (): Promise<any> => {
         return new Promise((res, rej) => {
@@ -216,6 +232,16 @@ export default class Application extends React.Component<IProps> {
         });
     }
 
+    updateDoneLevels = (id: string): void => {
+        fetch(`${BACKEND_URL}/api/user/level/${id}`, {
+            headers: new Headers({
+                "Content-Type": "application/json",
+                "Token": this.props.user.sessionToken,
+            }),
+            method: "POST",
+        });
+    }
+
     login = (username: string, password: string): Promise<IUser | IResponse> => {
         return new Promise((res, rej) => {
             fetch(`${BACKEND_URL}/api/login`, {
@@ -282,7 +308,8 @@ export default class Application extends React.Component<IProps> {
                         isAuth={this.isAuthenticated}
                         path="/welcome"
                         component={() => {
-                            return <WelcomePage />
+                            return <WelcomePage
+                                dontShowAgain={this.introDontShowAgain} />
                         }} />
                     <AuthRoute
                         isAuth={this.isAuthenticated}
@@ -297,7 +324,7 @@ export default class Application extends React.Component<IProps> {
                                 return <LevelPage
                                     id={match.params.id}
                                     levelVocab={this.getLevelVocab}
-                                    drawerButtonState={this.drawerButtonState}
+                                    updateDoneLevels={this.updateDoneLevels}
                                     setLastReview={this.setLastReview} />;
                             } else {
                                 return <Redirect to="/login" />;