Minha.cc business logic - Firebase Functions

Overall project structure:

/ repositories
|-- cart.ts: responsible for cart model on firestore database
|-- transaction.ts: responsible for transaction model on firestore database
|-- transactionType.ts: responsible for transaction type model on firestore database
/ services
|-- transaction.ts: has two public methods that should be called by app clients:
     createEmpty: that will create an empty transaction;
     save: that will persist the transaction on database, also will orchestrate other business rules
/ index.ts: will expose all callable endpoints

Endpoints:

• createUser:
  • creates the user on Firebase Auth;
  • creates account on Firestore database;
  • copies global transaction types to the user.
• createEmptyTransaction: persists an empty transaction on Firestore each time that user clicks on +;
• saveTransaction:
  • persist the updated transaction on Firestore;
  • updates the user cart.
• removeTransaction:
  • remove the transaction from Firestore;
  • updates the user cart.

Environment:

• Firebase Functions
• Firebase Firestore

Deploy:

firebase deploy --only functions