package com.evilcorp.imagine;

import java.util.Objects;


public class Image {
    private final String name;
    private final int size;
    private final double hue;

    private Image(String name, int size, double hue) {
        Objects.requireNonNull(name);
        if (size <= 0) {
            throw new IllegalStateException();
        }
        this.name = name;
        this.size = size;
        this.hue = hue;
    }

    public String name() {
        return name;
    }

    public int size() {
        return size;
    }

    public double hue() {
        return hue;
    }

    public static Image download(String url) {
        var parts = url.split("/");
        var name = parts[parts.length - 1];
        var size = Math.abs(name.hashCode()) % 1_000_000;
        var hue = Math.abs(name.hashCode() % 255) / 255.0;
        System.out.println("Downloading image from " + url + " will take " + size % 10 + " seconds");
        try {
            Thread.sleep((size % 10) * 1000);
        } catch (InterruptedException e) {
            // not a good idea but it makes things easier
            throw new RuntimeException(e);
        }
        return new Image(name, size, hue);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof Image)) return false;

        Image image = (Image) o;

        if (size != image.size) return false;
        if (Double.compare(image.hue, hue) != 0) return false;
        return name.equals(image.name);
    }

    @Override
    public int hashCode() {
        int result;
        long temp;
        result = name.hashCode();
        result = 31 * result + size;
        temp = Double.doubleToLongBits(hue);
        result = 31 * result + (int) (temp ^ (temp >>> 32));
        return result;
    }
}