Fix SQL query in `/api/v1/directory` (#28412)

app/models/account.rb

@@ -112,7 +112,7 @@ class Account < ApplicationRecord
   scope :matches_domain, ->(value) { where(arel_table[:domain].matches("%#{value}%")) }
   scope :without_unapproved, -> { left_outer_joins(:user).remote.or(left_outer_joins(:user).merge(User.approved.confirmed)) }
   scope :searchable, -> { without_unapproved.without_suspended.where(moved_to_account_id: nil) }
-  scope :discoverable, -> { searchable.without_silenced.where(discoverable: true).left_outer_joins(:account_stat) }
+  scope :discoverable, -> { searchable.without_silenced.where(discoverable: true).joins(:account_stat) }
   scope :followable_by, ->(account) { joins(arel_table.join(Follow.arel_table, Arel::Nodes::OuterJoin).on(arel_table[:id].eq(Follow.arel_table[:target_account_id]).and(Follow.arel_table[:account_id].eq(account.id))).join_sources).where(Follow.arel_table[:id].eq(nil)).joins(arel_table.join(FollowRequest.arel_table, Arel::Nodes::OuterJoin).on(arel_table[:id].eq(FollowRequest.arel_table[:target_account_id]).and(FollowRequest.arel_table[:account_id].eq(account.id))).join_sources).where(FollowRequest.arel_table[:id].eq(nil)) }
   scope :by_recent_status, -> { includes(:account_stat).merge(AccountStat.order('last_status_at DESC NULLS LAST')).references(:account_stat) }
   scope :by_recent_sign_in, -> { order(Arel.sql('users.current_sign_in_at DESC NULLS LAST')) }

spec/requests/api/v1/directories_spec.rb

@@ -0,0 +1,139 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe 'Directories API' do
+  let(:user)    { Fabricate(:user, confirmed_at: nil) }
+  let(:token)   { Fabricate(:accessible_access_token, resource_owner_id: user.id, scopes: scopes) }
+  let(:scopes)  { 'read:follows' }
+  let(:headers) { { 'Authorization' => "Bearer #{token.token}" } }
+
+  describe 'GET /api/v1/directories' do
+    context 'with no params' do
+      before do
+        local_unconfirmed_account = Fabricate(
+          :account,
+          domain: nil,
+          user: Fabricate(:user, confirmed_at: nil, approved: true),
+          username: 'local_unconfirmed'
+        )
+        local_unconfirmed_account.create_account_stat!
+
+        local_unapproved_account = Fabricate(
+          :account,
+          domain: nil,
+          user: Fabricate(:user, confirmed_at: 10.days.ago),
+          username: 'local_unapproved'
+        )
+        local_unapproved_account.create_account_stat!
+        local_unapproved_account.user.update(approved: false)
+
+        local_undiscoverable_account = Fabricate(
+          :account,
+          domain: nil,
+          user: Fabricate(:user, confirmed_at: 10.days.ago, approved: true),
+          discoverable: false,
+          username: 'local_undiscoverable'
+        )
+        local_undiscoverable_account.create_account_stat!
+
+        excluded_from_timeline_account = Fabricate(
+          :account,
+          domain: 'host.example',
+          discoverable: true,
+          username: 'remote_excluded_from_timeline'
+        )
+        excluded_from_timeline_account.create_account_stat!
+        Fabricate(:block, account: user.account, target_account: excluded_from_timeline_account)
+
+        domain_blocked_account = Fabricate(
+          :account,
+          domain: 'test.example',
+          discoverable: true,
+          username: 'remote_domain_blocked'
+        )
+        domain_blocked_account.create_account_stat!
+        Fabricate(:account_domain_block, account: user.account, domain: 'test.example')
+
+        local_discoverable_account.create_account_stat!
+        eligible_remote_account.create_account_stat!
+      end
+
+      let(:local_discoverable_account) do
+        Fabricate(
+          :account,
+          domain: nil,
+          user: Fabricate(:user, confirmed_at: 10.days.ago, approved: true),
+          discoverable: true,
+          username: 'local_discoverable'
+        )
+      end
+
+      let(:eligible_remote_account) do
+        Fabricate(
+          :account,
+          domain: 'host.example',
+          discoverable: true,
+          username: 'eligible_remote'
+        )
+      end
+
+      it 'returns the local discoverable account and the remote discoverable account' do
+        get '/api/v1/directory', headers: headers
+
+        expect(response).to have_http_status(200)
+        expect(body_as_json.size).to eq(2)
+        expect(body_as_json.pluck(:id)).to contain_exactly(eligible_remote_account.id.to_s, local_discoverable_account.id.to_s)
+      end
+    end
+
+    context 'when asking for local accounts only' do
+      let(:user) { Fabricate(:user, confirmed_at: 10.days.ago, approved: true) }
+      let(:local_account) { Fabricate(:account, domain: nil, user: user) }
+      let(:remote_account) { Fabricate(:account, domain: 'host.example') }
+
+      before do
+        local_account.create_account_stat!
+        remote_account.create_account_stat!
+      end
+
+      it 'returns only the local accounts' do
+        get '/api/v1/directory', headers: headers, params: { local: '1' }
+
+        expect(response).to have_http_status(200)
+        expect(body_as_json.size).to eq(1)
+        expect(body_as_json.first[:id]).to include(local_account.id.to_s)
+        expect(response.body).to_not include(remote_account.id.to_s)
+      end
+    end
+
+    context 'when ordered by active' do
+      it 'returns accounts in order of most recent status activity' do
+        old_stat = Fabricate(:account_stat, last_status_at: 1.day.ago)
+        new_stat = Fabricate(:account_stat, last_status_at: 1.minute.ago)
+
+        get '/api/v1/directory', headers: headers, params: { order: 'active' }
+
+        expect(response).to have_http_status(200)
+        expect(body_as_json.size).to eq(2)
+        expect(body_as_json.first[:id]).to include(new_stat.account_id.to_s)
+        expect(body_as_json.second[:id]).to include(old_stat.account_id.to_s)
+      end
+    end
+
+    context 'when ordered by new' do
+      it 'returns accounts in order of creation' do
+        account_old = Fabricate(:account_stat).account
+        travel_to 10.seconds.from_now
+        account_new = Fabricate(:account_stat).account
+
+        get '/api/v1/directory', headers: headers, params: { order: 'new' }
+
+        expect(response).to have_http_status(200)
+        expect(body_as_json.size).to eq(2)
+        expect(body_as_json.first[:id]).to include(account_new.id.to_s)
+        expect(body_as_json.second[:id]).to include(account_old.id.to_s)
+      end
+    end
+  end
+end