fix: Regional API domain processing

Author: manisha1997

lib/twilio-ruby/base/client_base.rb

@@ -4,8 +4,18 @@ class ClientBase
       # rubocop:disable Style/ClassVars
       @@default_region = 'us1'
       # rubocop:enable Style/ClassVars
-
-      attr_accessor :http_client, :username, :password, :account_sid, :auth_token, :region, :edge, :logger,
+      @@region_mappings = {
+        "au1" => "sydney",
+        "br1" => "sao-paulo",
+        "de1" => "frankfurt",
+        "ie1" => "dublin",
+        "jp1" => "tokyo",
+        "jp2" => "osaka",
+        "sg1" => "singapore",
+        "us1" => "ashburn",
+        "us2" => "umatilla"
+      }
+      attr_accessor :http_client, :username, :password, :account_sid, :auth_token, :region , :logger,
                     :user_agent_extensions, :credentials
 
       # rubocop:disable Metrics/ParameterLists
@@ -14,7 +24,7 @@ def initialize(username = nil, password = nil, account_sid = nil, region = nil,
         @username = username || Twilio.account_sid
         @password = password || Twilio.auth_token
         @region = region || Twilio.region
-        @edge = Twilio.edge
+        @edge = !region.nil? ? @@region_mappings[region] : nil
         @account_sid = account_sid || @username
         @auth_token = @password
         @auth = [@username, @password]
@@ -23,6 +33,16 @@ def initialize(username = nil, password = nil, account_sid = nil, region = nil,
         @user_agent_extensions = user_agent_extensions || []
       end
 
+      def edge=(value)
+        warn "[DEPRECATION] `edge` is deprecated and will be removed in a future version. Use `region` instead."
+        @edge = value
+      end
+
+      def edge
+        warn "[DEPRECATION] `edge` is deprecated and will be removed in a future version. Use `region` instead."
+        @edge
+      end
+
       def credential_provider(credential_provider = nil)
         @credentials = credential_provider
         self