[deploy] Limit Response Template Count for Users (#7890)

app/models/response_template.rb

@@ -24,10 +24,20 @@ class ResponseTemplate < ApplicationRecord
             inclusion: { in: EMAIL_CONTENT_TYPES, message: EMAIL_VALIDATION_MSG },
             if: -> { type_of&.include?("email") }
   validate :user_nil_only_for_user_nil_types
+  validate :template_count
+
+  private
 
   def user_nil_only_for_user_nil_types
     return unless user_id.present? && USER_NIL_TYPE_OF_TYPES.include?(type_of)
 
     errors.add(:type_of, USER_NIL_TYPE_OF_MSG)
   end
+
+  def template_count
+    return unless user
+    return if user.trusted || user.response_templates.count <= 30
+
+    errors.add(:user, "Response template limit of 30 per user has been reached")
+  end
 end

spec/models/response_template_spec.rb

@@ -27,4 +27,22 @@ RSpec.describe ResponseTemplate, type: :model do
       end
     end
   end
+
+  describe "user validation" do
+    it "validates the number of templates for a normal user" do
+      user = create(:user)
+      create_list(:response_template, 30, user_id: user.id)
+      invalid_template = create(:response_template, user_id: user.id)
+
+      expect(invalid_template).not_to be_valid
+      expect(invalid_template.errors.full_messages.join).to include("limit of 30 per user has been reached")
+    end
+
+    it "allows trusted users to have unlimited templates" do
+      user = create(:user, :trusted)
+      create_list(:response_template, 31, user_id: user.id)
+
+      expect(user.response_templates.all?(&:valid?)).to be(true)
+    end
+  end
 end