[Feature] Email collect message hooks (#331)

- Add email collect hook on creating conversation
- Merge contact if it already exist

app/controllers/widgets_controller.rb

@@ -4,66 +4,47 @@ class WidgetsController < ActionController::Base
   before_action :set_contact
   before_action :build_contact
 
+  def index
+    render
+  end
+
   private
 
-  def set_contact
-    return if cookie_params[:source_id].nil?
-
-    contact_inbox = ::ContactInbox.find_by(
-      inbox_id: @web_widget.inbox.id,
-      source_id: cookie_params[:source_id]
-    )
-
-    @contact = contact_inbox ? contact_inbox.contact : nil
-  end
-
-  def set_token
-    @token = conversation_token
-  end
-
   def set_web_widget
     @web_widget = ::Channel::WebWidget.find_by!(website_token: permitted_params[:website_token])
   end
 
+  def set_token
+    @token = permitted_params[:cw_conversation]
+    @auth_token_params = if @token.present?
+                           ::Widget::TokenService.new(token: @token).decode_token
+                         else
+                           {}
+                         end
+  end
+
+  def set_contact
+    return if @auth_token_params[:source_id].nil?
+
+    contact_inbox = ::ContactInbox.find_by(
+      inbox_id: @web_widget.inbox.id,
+      source_id: @auth_token_params[:source_id]
+    )
+
+    @contact = contact_inbox ? contact_inbox.contact : nil
+  end
+
   def build_contact
     return if @contact.present?
 
     contact_inbox = @web_widget.create_contact_inbox
     @contact = contact_inbox.contact
 
-    payload = {
-      source_id: contact_inbox.source_id,
-      contact_id: @contact.id,
-      inbox_id: @web_widget.inbox.id
-    }
-    @token = JWT.encode payload, secret_key, 'HS256'
-  end
-
-  def cookie_params
-    return @cookie_params if @cookie_params.present?
-
-    if conversation_token.present?
-      begin
-        @cookie_params = JWT.decode(
-          conversation_token, secret_key, true, algorithm: 'HS256'
-        ).first.symbolize_keys
-      rescue StandardError
-        @cookie_params = {}
-      end
-      return @cookie_params
-    end
-    {}
-  end
-
-  def conversation_token
-    permitted_params[:cw_conversation]
+    payload = { source_id: contact_inbox.source_id, inbox_id: @web_widget.inbox.id }
+    @token = ::Widget::TokenService.new(payload: payload).generate_token
   end
 
   def permitted_params
     params.permit(:website_token, :cw_conversation)
   end
-
-  def secret_key
-    Rails.application.secrets.secret_key_base
-  end
 end