src/main/java/design/persistence/PersonalDatabase.java


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package design.persistence;

import design.model.Golfer;

import java.io.IOException;

public interface PersonalDatabase {
    PersonalDatabase INSTANCE = new JSONPersonalDatabase("data/personaldb.json");

    Golfer[] getGolfers();

    Golfer getGolfer(String name);

    void addGolfer(Golfer golfer) throws IOException;

    void removeGolfer(Golfer golfer) throws IOException;

    void updateGolfer(Golfer golfer) throws IOException;

    default Golfer loadOrCreateGolfer(String username, String fullNameIfNew, String pwIfNew) throws IOException {
        Golfer g = getGolfer(username);
        if (g != null)
            return g;
        g = new Golfer(fullNameIfNew, username, pwIfNew);
        addGolfer(g);
        return g;
    }
}