Note if the user is already following the target when authorizing follow (#6325)

app/views/authorize_follows/_post_follow_actions.html.haml

@@ -0,0 +1,4 @@
+.post-follow-actions
+  %div= link_to t('authorize_follow.post_follow.web'), web_url("accounts/#{@account.id}"), class: 'button button--block'
+  %div= link_to t('authorize_follow.post_follow.return'), TagManager.instance.url_for(@account), class: 'button button--block'
+  %div= t('authorize_follow.post_follow.close')

app/views/authorize_follows/show.html.haml

@@ -5,7 +5,13 @@
   .follow-prompt
     = render 'card', account: @account
 
-  - unless current_account.following?(@account)
+  - if current_account.following?(@account)
+    .flash-message
+      %strong
+        = t('authorize_follow.already_following')
+    = render 'post_follow_actions'
+
+  - else
     = form_tag authorize_follow_path, method: :post, class: 'simple_form' do
       = hidden_field_tag :acct, @account.acct
       = button_tag t('authorize_follow.follow'), type: :submit

app/views/authorize_follows/success.html.haml

@@ -10,7 +10,4 @@
 
     = render 'card', account: @account
 
-  .post-follow-actions
-    %div= link_to t('authorize_follow.post_follow.web'), web_url("accounts/#{@account.id}"), class: 'button button--block'
-    %div= link_to t('authorize_follow.post_follow.return'), TagManager.instance.url_for(@account), class: 'button button--block'
-    %div= t('authorize_follow.post_follow.close')
+  = render 'post_follow_actions'

config/locales/en.yml

@@ -382,6 +382,7 @@ en:
     security: Security
     set_new_password: Set new password
   authorize_follow:
+    already_following: You are already following this account
     error: Unfortunately, there was an error looking up the remote account
     follow: Follow
     follow_request: 'You have sent a follow request to:'

config/locales/ja.yml

@@ -382,6 +382,7 @@ ja:
     security: セキュリティ
     set_new_password: 新しいパスワード
   authorize_follow:
+    already_following: あなたは既にこのアカウントをフォローしています
     error: 残念ながら、リモートアカウント情報の取得中にエラーが発生しました
     follow: フォロー
     follow_request: 'あなたは以下のアカウントにフォローリクエストを送信しました:'