Feature: Website SDK (#653)

Add SDK functions

Co-authored-by: Sojan <sojan@pepalo.com>

app/models/contact.rb

@@ -5,6 +5,7 @@
 #  id                    :integer          not null, primary key
 #  additional_attributes :jsonb
 #  email                 :string
+#  identifier            :string
 #  name                  :string
 #  phone_number          :string
 #  pubsub_token          :string
@@ -14,8 +15,10 @@
 #
 # Indexes
 #
-#  index_contacts_on_account_id    (account_id)
-#  index_contacts_on_pubsub_token  (pubsub_token) UNIQUE
+#  index_contacts_on_account_id         (account_id)
+#  index_contacts_on_pubsub_token       (pubsub_token) UNIQUE
+#  uniq_email_per_account_contact       (email,account_id) UNIQUE
+#  uniq_identifier_per_account_contact  (identifier,account_id) UNIQUE
 #
 
 class Contact < ApplicationRecord
@@ -23,6 +26,8 @@ class Contact < ApplicationRecord
   include Avatarable
   include AvailabilityStatusable
   validates :account_id, presence: true
+  validates :email, allow_blank: true, uniqueness: { scope: [:account_id], case_sensitive: false }
+  validates :identifier, allow_blank: true, uniqueness: { scope: [:account_id] }
 
   belongs_to :account
   has_many :conversations, dependent: :destroy
@@ -30,6 +35,8 @@ class Contact < ApplicationRecord
   has_many :inboxes, through: :contact_inboxes
   has_many :messages, dependent: :destroy
 
+  before_validation :downcase_email
+
   def get_source_id(inbox_id)
     contact_inboxes.find_by!(inbox_id: inbox_id).source_id
   end
@@ -49,4 +56,8 @@ class Contact < ApplicationRecord
       name: name
     }
   end
+
+  def downcase_email
+    email.downcase! if email.present?
+  end
 end