Fix: Login with email and add option to disable some external auth provider

app/controllers/login_controller.rb

@@ -16,9 +16,14 @@ def index
 
   # logs in a user
   def create
+    if params[:user][:username] =~ /\A[^@\s]+@[^@\s]+\z/ #this is a regular expression to check if the input is an email or not
+      username = LinkedData::Client::Models::User.find_by_email(params[:user][:username]).first.username
+    else
+      username = params[:user][:username]
+    end
     @errors = validate(params[:user])
     if @errors.size < 1
-      logged_in_user = LinkedData::Client::Models::User.authenticate(params[:user][:username], params[:user][:password])
+      logged_in_user = LinkedData::Client::Models::User.authenticate(username, params[:user][:password])
       if logged_in_user && !logged_in_user.errors
         login(logged_in_user)
         redirect = "/"

app/views/login/index.html.haml

@@ -23,8 +23,8 @@
     %div.d-flex.justify-content-center.flew-wrap
       - omniauth_providers_info.each do |provider, config|
         = button_to  "/auth/#{config[:name] || config[:strategy] || provider}",
-                    class: 'btn btn-lg', style:'width: 70px', title: "Login with #{provider.to_s.humanize}", 'data-turbo': false do
+                    class: 'btn btn-lg',disabled: !config[:enable] ,style:'width: 70px', title: "Login with #{provider.to_s.humanize}", 'data-turbo': false do; 
           - if config[:icon]
             = inline_svg config[:icon]
-          - else
+          - else 
             = provider.to_s.humanize