Add custom domains (#314)

app/workflows/add_custom_domain_workflow.rb

@@ -0,0 +1,48 @@
+class AddCustomDomainWorkflow
+  include HTTParty
+
+  attr_accessor :new_custom_domain, :current_custom_domain
+
+  def initialize(new_custom_domain: "", current_custom_domain: "")
+    @new_custom_domain = new_custom_domain
+    @current_custom_domain = current_custom_domain
+  end
+
+  def make_request(method, domain)
+    return unless method == "POST" || method == "DELETE"
+
+    HTTParty.send(
+      method.downcase,
+      ENV["ASTUTO_CNAME_API_URL"],
+      headers: {
+        "api_key" => ENV["ASTUTO_CNAME_API_KEY"],
+        "Accept" => "application/json",
+      },
+      query: { "domain" => domain.downcase }
+    )
+  end
+
+  def run
+    return true unless Rails.application.multi_tenancy?
+    return true if @new_custom_domain == @current_custom_domain
+    return true if Tenant.exists?(custom_domain: @new_custom_domain)
+    
+    begin
+      # Add new custom domain...
+      if @new_custom_domain.present?
+        response = make_request("POST", @new_custom_domain)
+
+        return false unless response.success?
+      end
+
+      # ... and remove the current one
+      if @current_custom_domain.present?
+        make_request("DELETE", @current_custom_domain)
+      end
+
+      return true
+    rescue => e
+      return false
+    end
+  end
+end