Stripe payment integration within existing Shopify website

Developer should cover the following points during the process of integration of Stripe. 1. Authentication & Capture: Customer checks out from Shopify store front. Card is saved but not charged. Card is charged when perimeters are met. 2. Save Card on file: In-case of damages or non return card is saved and can be charged any amount at a later time 3. Connect: Vendor is paid out at specified time for specified amount automatically.