Write an chat Messenger App for Android, iOS

Hello, I need a Messenger Application based on Telegram APIs ([login to view URL]) translated based on my local language following features: 1- Support Full push notification trough OneSignal or other push notification platforms 2- Full UI based on right-to-left language (I will responsible for word translation) 3- All Standard Telegram app features plus classified feature for conversations 4- Support to add some channels by default Documents: 1- Source codes for Android source: "[login to view URL]" Or [login to view URL] 2-Source codes for iOS source: [login to view URL] or [login to view URL] 3- Source codes for Desktop: [login to view URL] Deliverable: 1- I need the source codes : we can negotiate for long term support & update 2- Publish on the apple and google developer accounts Thankyou