Enable bookmarking posts

Due to #22, this is definitely broken on Pixelfed instances, though it
may or may not otherwise work on Mastodon. Further investigation is
needed to determine why this issue persists

src/components/posts/post-action-bar.js

@@ -44,19 +44,16 @@ const PostActionBarJsx = (props) => {
     return (
         <View style = { styles.flexContainer }>
             <PostActionJsx
-                field = "favourited"
                 pack = { icons.heart }
                 active = { props.favourited }
                 onPress = { props.onFavourite } />
 
             <PostActionJsx
-                field = "reblogged"
                 pack = { icons.reblog }
                 active = { props.reblogged }
                 onPress = { props.onReblog }/>
 
             <PostActionJsx
-                field = "bookmarked"
                 pack = { icons.bookmark }
                 last = { true }
                 active = { props.bookmarked }

src/components/posts/post.js

@@ -137,7 +137,7 @@ export const RawPostJsx = (props) => {
             <PostActionBarJsx
                 favourited = { props.data.favourited }
                 reblogged = { props.data.reblogged }
-                bookmarked = { false }
+                bookmarked = { props.data.bookmarked }
                 onFavourite = { props.onFavourite }
                 onReblog = { props.onReblog }
                 onBookmark = { props.onBookmark } />
@@ -250,6 +250,29 @@ export const PostByDataJsx = (props) => {
         });
     };
 
+    const _handleBookmark = async () => {
+        let newStatus;
+
+        if (!state.data.bookmarked) {
+            newStatus = await requests.bookmarkStatus(
+                state.instance,
+                state.data.id,
+                state.accessToken
+            );
+        } else {
+            newStatus = await requests.unbookmarkStatus(
+                state.instance,
+                state.data.id,
+                state.accessToken
+            );
+        }
+        console.warn(newStatus.bookmarked);
+
+        setState({...state,
+            data: newStatus,
+        });
+    };
+
     return (
         <View>
             { state.loaded ?
@@ -258,6 +281,7 @@ export const PostByDataJsx = (props) => {
                     dimensions = { state.dimensions }
                     onFavourite = { _handleFavourite }
                     onReblog = { _handleReblog }
+                    onBookmark = { _handleBookmark }
                     navigation = { props.navigation }/>
                 : <View></View> }
         </View>

src/requests.js

@@ -116,6 +116,17 @@ export async function unreblogStatus(domain, id, token) {
     const resp = await post(`https://${domain}/api/v1/statuses/${id}/unreblog`, token);
     return resp.json();
 }
+
+export async function bookmarkStatus(domain, id, token) {
+    const resp = await post(`https://${domain}/api/v1/statuses/${id}/bookmark`, token);
+    return resp.json();
+}
+
+export async function unbookmarkStatus(domain, id, token) {
+    const resp = await post(`https://${domain}/api/v1/statuses/${id}/unbookmark`, token);
+    return resp.json();
+}
+
 export async function fetchFollowing(domain, id, token) {
     const resp = await get(`https://${domain}/api/v1/accounts/${id}/following`, token);
     return resp.json();