Implement follow/unfollow accounts

Implemented basic follow/unfollow functionality. Probably needs
some styling, definitely needs other controls.

app/Http/Controllers/AccountController.php

@@ -16,11 +16,55 @@ class AccountController extends Controller
             ->token($user->token)
             ->get('/accounts/' . $account_id);
 
+        if (session()->has('relationship'))
+        {
+            // The user is coming here after peforming an action on an account,
+            // in which case we don't need to re-query the relationship.
+
+            $relationship = session('relationship');
+        }
+        else
+        {
+            // If the relationship hasn't been returned from performing an action,
+            // we need to query for it.
+
+            $relationships = Mastodon::domain(env('MASTODON_DOMAIN'))
+                ->token($user->token)
+                ->get('/accounts/relationships', ['id' => $account_id]);
+
+            $relationship = $relationships[0];
+        }
+
         $vars = [
             'account' => $account,
-            'mastodon_domain' => explode('//', env('MASTODON_DOMAIN'))[1]
+            'mastodon_domain' => explode('//', env('MASTODON_DOMAIN'))[1],
+            'relationship' => $relationship
         ];
 
         return view('account', $vars);
     }
+
+    public function follow_account(Request $request, string $account_id)
+    {
+        $user = session('user');
+
+        $relationship = Mastodon::domain(env('MASTODON_DOMAIN'))
+            ->token($user->token)
+            ->post('/accounts/' . $account_id . '/follow');
+
+        return redirect()->route('account', ['account_id' => $account_id])
+            ->with('relationship', $relationship);
+    }
+
+    public function unfollow_account(Request $request, string $account_id)
+    {
+        $user = session('user');
+
+        $relationship = Mastodon::domain(env('MASTODON_DOMAIN'))
+            ->token($user->token)
+            ->post('/accounts/' . $account_id . '/unfollow');
+
+        return redirect()->route('account', ['account_id' => $account_id])
+            ->with('relationship', $relationship);
+    }
 }

resources/views/account.blade.php

@@ -29,6 +29,17 @@
                 </a>
             </span>
             {!! $account['note'] !!}
+            <div>
+                @if ($relationship['following'])
+                    <a href="{{ route('unfollow', ['account_id' => $account['id']]) }}">
+                        Unfollow
+                    </a>
+                @else
+                    <a href="{{ route('follow', ['account_id' => $account['id']]) }}">
+                        Follow
+                    </a>
+                @endif
+            </div>
         </div>
     </body>
 </html>

routes/web.php

@@ -63,6 +63,14 @@ Route::get('/account/{account_id}', 'AccountController@view_account')
     ->name('account')
     ->middleware('authorize');
 
+Route::get('/account/{account_id}/follow', 'AccountController@follow_account')
+    ->name('follow')
+    ->middleware('authorize');
+
+Route::get('/account/{account_id}/unfollow', 'AccountController@unfollow_account')
+    ->name('unfollow')
+    ->middleware('authorize');
+
 Route::get('/login', 'LoginController@login')
     ->name('login');