Enable logging out by revoking the access token

src/components/pages/profile/settings.js

@@ -13,6 +13,7 @@ import {
 import AsyncStorage from "@react-native-async-storage/async-storage";
 
 import { withoutHTML } from "src/interface/rendering";
+import * as requests from "src/requests";
 
 import { ScreenWithBackBarJsx } from "src/components/navigation/navigators";
 
@@ -46,12 +47,68 @@ const SettingsJsx = (props) => {
         // Use Context to get this stuff eventually
         profile: TEST_PROFILE,
         newProfile: TEST_PROFILE,
+        loaded: false,
     });
 
     const fields = state.newProfile.fields;
 
+    const _handleLogout = async () => {
+        await requests.postForm(
+            `https://${state.instance}/oauth/revoke`,
+            {
+                client_id: state.appObject.client_id,
+                client_secret: state.appObject.client_secret,
+                token: state.token.access_token,
+            }
+        );
+
+        await AsyncStorage.multiRemove([
+                "@user_profile",
+                "@user_notifications",
+                "@user_instance",
+                "@user_token",
+        ]);
+
+        props.navigation.navigate("Authenticate");
+    };
+
+    useEffect(() => {
+        AsyncStorage
+            .multiGet([
+                "@user_profile",
+                "@user_instance",
+                "@user_token",
+                "@app_object",
+            ])
+            .then(([profilePair, instancePair, tokenPair, appPair]) =>
+                [
+                    JSON.parse(profilePair[1]),
+                    instancePair[1],
+                    JSON.parse(tokenPair[1]),
+                    JSON.parse(appPair[1]),
+                ]
+            )
+            .then(([profile, instance, token, appObject]) => {
+                let newProfile = profile;
+                newProfile.fields = newProfile.fields == null
+                    ? []
+                    : newProfile.fields;
+
+                setState({...state,
+                    profile: profile,
+                    newProfile: newProfile,
+                    instance: instance,
+                    appObject: appObject,
+                    token: token,
+                    loaded: true,
+                })
+            });
+    }, []);
+
     return (
-        <ScreenWithBackBarJsx navigation = { props.navigation }>
+        <>
+            { state.loaded
+                ? <ScreenWithBackBarJsx navigation = { props.navigation }>
                     <View style = { styles.avatar.container }>
                         <Image
                             source = { { uri: state.profile.avatar } }
@@ -207,15 +264,7 @@ const SettingsJsx = (props) => {
                         </TouchableOpacity>
                         <TouchableOpacity
                               style = { styles.button.container }
-                      onPress = {
-                        () => {
-                            AsyncStorage.multiRemove(
-                                ["@user_profile", "@user_notifications"]
-                            ).then(() => {
-                                props.navigation.navigate("Authenticate");
-                            });
-                        }
-                      }>
+                              onPress = { _handleLogout }>
                             <Text style = {
                                     [ styles.button.text, styles.button.warning ]
                                   }>
@@ -224,6 +273,9 @@ const SettingsJsx = (props) => {
                         </TouchableOpacity>
                     </View>
                 </ScreenWithBackBarJsx>
+                : <></>
+            }
+        </>
     );
 };