Adding common followers API, fixing fallback query again

app/controllers/api/v1/accounts_controller.rb

@@ -14,15 +14,23 @@ class Api::V1::AccountsController < ApiController
   end
 
   def following
-    @following = @account.following
+    @accounts = @account.following
+    render action: :index
   end
 
   def followers
-    @followers = @account.followers
+    @accounts = @account.followers
+    render action: :index
+  end
+
+  def common_followers
+    @accounts = @account.common_followers_with(current_user.account)
+    render action: :index
   end
 
   def suggestions
     @accounts = FollowSuggestion.get(current_user.account_id)
+    render action: :index
   end
 
   def statuses

app/models/account.rb

@@ -122,6 +122,15 @@ class Account < ApplicationRecord
     username
   end
 
+  def common_followers_with(other_account)
+    results  = Neography::Rest.new.execute_query('MATCH (a {account_id: {a_id}})-[:follows]->(b)-[:follows]->(c {account_id: {c_id}}) RETURN b.account_id', a_id: id, c_id: other_account.id)
+    ids      = results['data'].map(&:first)
+    accounts = self.where(id: ids).with_counters.map { |a| [a.id, a] }.to_h
+    ids.map { |id| accounts[id] }.compact
+  rescue Neography::NeographyError, Excon::Error::Socket
+    []
+  end
+
   def self.find_local!(username)
     find_remote!(username, nil)
   end

app/models/follow_suggestion.rb

@@ -36,11 +36,7 @@ END
       neo = Neography::Rest.new
 
       query = <<END
-OPTIONAL MATCH (a {account_id: {id}})
-WITH a
 MATCH (b)
-WHERE b <> a
-AND NOT (a)-[:follows]->(b)
 RETURN b.account_id
 ORDER BY b.nodeRank DESC
 LIMIT {limit}

app/views/api/v1/accounts/followers.rabl

@@ -1,2 +0,0 @@
-collection @followers
-extends('api/v1/accounts/show')

app/views/api/v1/accounts/following.rabl

@@ -1,2 +0,0 @@
-collection @following
-extends('api/v1/accounts/show')

app/views/api/v1/accounts/index.rabl

@@ -0,0 +1,2 @@
+collection @accounts
+extends 'api/v1/accounts/show'

app/views/api/v1/accounts/statuses.rabl

@@ -1,2 +1,2 @@
 collection @statuses
-extends('api/v1/statuses/show')
+extends 'api/v1/statuses/show'

app/views/api/v1/accounts/suggestions.rabl

@@ -1,2 +0,0 @@
-collection @accounts
-extends('api/v1/accounts/show')

config/routes.rb

@@ -82,6 +82,7 @@ Rails.application.routes.draw do
           get :statuses
           get :followers
           get :following
+          get :common_followers
 
           post :follow
           post :unfollow