CheckPassword checks if the password is correct.

HashedPassword return the bcrypt hash of the password.

IsSupportCurrency checks if currency is supported.

LoadConfig loads config from file.

RandomCurrency generates a random currency code.

RandomEmail generates a random email.

RandomHashedPassword generates a random hashed password.

RandomInt generates a random integer between min and max.

RandomMoney generates a random amount of money.

RandomOwner generates a random owner name.

RandomString generates a random string of length n.

Config is the configuration for the application.