Feature: Support file type messages on widget and dashboard (#659)

- Adds support for file upload

Co-authored-by: Pranav Raj Sreepuram <pranavrajs@gmail.com>
Co-authored-by: Sojan <sojan@pepalo.com>

app/controllers/api/v1/widget/messages_controller.rb

@@ -10,12 +10,8 @@ class Api::V1::Widget::MessagesController < Api::V1::Widget::BaseController
 
   def create
     @message = conversation.messages.new(message_params)
+    build_attachment
     @message.save!
-    if params[:message][:attachment].present?
-      @message.attachment = Attachment.new(account_id: @message.account_id)
-      @message.attachment.file.attach(params[:message][:attachment][:file])
-    end
-    render json: @message
   end
 
   def update
@@ -28,6 +24,16 @@ class Api::V1::Widget::MessagesController < Api::V1::Widget::BaseController
 
   private
 
+  def build_attachment
+    return if params[:message][:attachment].blank?
+
+    @message.attachment = Attachment.new(
+      account_id: @message.account_id,
+      file_type: helpers.file_type(params[:message][:attachment][:file]&.content_type)
+    )
+    @message.attachment.file.attach(params[:message][:attachment][:file])
+  end
+
   def set_conversation
     @conversation = ::Conversation.create!(conversation_params) if conversation.nil?
   end