Added new method for custom host support with different regions

Author: sunil-lakshman

lib/contentstack/client.rb

@@ -17,7 +17,8 @@ def initialize(api_key, delivery_token, environment, options={})
       raise Contentstack::Error.new("Envirnoment Field is not valid") if environment.class != String
       raise Contentstack::Error.new("Envirnoment Field Should not be Empty") if environment.empty?
       @region = options[:region].nil? ? Contentstack::Region::US : options[:region]
-      @host = options[:host].nil? ? get_default_region_hosts(@region) : options[:host]
+      # @host = options[:host].nil? ? get_default_region_hosts(@region) : options[:host] #removed for not supporting custom host with regions
+      @host = get_host_by_region(@region, options) # Added new method for custom host support with different regions
       @live_preview = !options.key?(:live_preview) ? {} : options[:live_preview]
       @branch = options[:branch].nil? ? "" : options[:branch]
       @proxy_details = options[:proxy].nil? ? "" : options[:proxy]
@@ -80,7 +81,7 @@ def sync(params)
 
     private
     def get_default_region_hosts(region='us')
-      host = "https://cdn.contentstack.io"
+      host = "https://cdn.contentstack.io" #set default host if region is nil
       case region
       when "us"
         host = "https://cdn.contentstack.io"
@@ -93,5 +94,30 @@ def get_default_region_hosts(region='us')
       end
       host
     end
+
+    def get_host_by_region(region, options)
+      if options[:host].nil? && region.present?
+        host = get_default_region_hosts(region)
+      elsif options[:host].present? && region.present?
+        custom_host = options[:host]
+        case region
+        when "us"
+        host = "https://cdn.#{custom_host}"
+        when "eu"
+          host = "https://eu-cdn.#{custom_host}"
+        when "azure-na"
+          host = "https://azure-na-cdn.#{custom_host}"
+        when "azure-eu"
+          host = "https://azure-eu-cdn.#{custom_host}"
+        end
+      elsif options[:host].present? && region.empty?
+        custom_host = options[:host]
+        host = "https://cdn.#{custom_host}"
+      else
+        host = "https://cdn.contentstack.io" #set default host if region and host is empty  
+      end
+      host
+    end
+
   end
 end