Xamrin Mobile application (Product request)with maps interaction

For example (medicine)
- Customer will choose from Products categories(medicine)
- Then will write the name of medicine or attach picture or doctor prescription.
- The request will be displayed for all pharmcies subscribed in my mobile app
- Pharmcy which has this medicine in stock will accept the request and show customer the
- Pharmcy name
- Price
- Phone number
- Location.
- Custmer will see the pharmcies who accepted his request on the map.
- Finally will choose one of pharmcies who accepted his request.
- Customer can choose delivery as an option.
- Customer Can pay for both medicine and delivery cost.
Note:
Customer and pharmcies should already subscribed in my mobile app so app should be desined for customer and pharmcies registration.
pharmcy registratin should include location to appear when accept the request .