wallet-challange

Starting the web-server:

Creating a your own configuration file app.config.js using app.config.example.js
Executing the following commands:

npm install
npm run build
npm run serve

Creditionals for the default admin user with full access:

A few points about the solution:

esbuild and gulp is used for building workflow;
when initializing the database schema, 4 basic roles are generated, starting from having no access (1) and ending with a role with full access to all endpoints (4);
UUID v4 is used to generate tokens for sessions;
Token HTTP header is used to transmit the session token. Request parameters are accepted in query string format both in URL or in request body.
/wallet/deposit and /wallet/withdraw endpoints use a separate worker-thread queue for all request to increase fault tolerance on heavy transaction load. Also these actions use mysql transactions to execute an atomic sequence of queries to solve concurrency problems