package profile;

import java.util.Objects;

// --- Core Interfaces & Abstractions (Interface Segregation) --- //
sealed interface Logger permits ConsoleLogger {
    void log(String message);
}

interface Debuggable {
    Logger logger();
    default void debug(String message) {
        logger().log("[DEBUG] " + message);
    }
}

// --- Concrete Implementation (Dependency Inversion) --- //
final class ConsoleLogger implements Logger {
    @Override
    public void log(String message) {
        System.out.println(message);
    }
}

// --- Domain Layer (Single Responsibility Principle) --- //
record Education(String bachelors, String masters, String specialization) {}

// --- Application Layer (Abstraction, Inheritance, Encapsulation) --- //
abstract sealed class Engineer permits SoftwareEngineer {
    protected abstract String introduce();
}

// --- High-Level Module (Open/Closed Principle + DI) --- //
final class SoftwareEngineer extends Engineer implements Debuggable {
    private final String name;
    private final String passion;
    private final String location;
    private final Education education;
    private final Logger logger;

    public SoftwareEngineer(String name, String passion, String location, Education education, Logger logger) {
        this.name = Objects.requireNonNull(name);
        this.passion = Objects.requireNonNull(passion);
        this.location = Objects.requireNonNull(location);
        this.education = Objects.requireNonNull(education);
        this.logger = Objects.requireNonNull(logger);
        debug("SoftwareEngineer instance initialized.");
    }

    @Override
    public Logger logger() {
        return logger;
    }

    @Override
    public String introduce() {
        debug("Generating introduction...");
        return String.format(
            "Hi there, I'm %s!\n" +
            "Passionate about %s and solving real-world problems.\n" +
            "Based in %s.\n" +
            "I hold a Bachelor's in %s.\n" +
            "Currently pursuing a Master's in %s, specializing in %s.",
            name,
            passion,
            location,
            education.bachelors(),
            education.masters(),
            education.specialization()
        );
    }
}

// --- Composition Root (Dependency Injection, Separation of Concerns) --- //
public class WhoAmI {
    public static void main(String[] args) {
        Logger logger = new ConsoleLogger();
        Education education = new Education(
            "Computer Science",
            "Data Science",
            "Machine Learning & Embedded Intelligence"
        );

        SoftwareEngineer husain = new SoftwareEngineer(
            "Husain",
            "building smart software & embedded systems",
            "Texas",
            education,
            logger
        );

        System.out.println(husain.introduce());
    }
}