package wspp;

import base.Named;
import base.Selector;
import java.util.Comparator;
import java.util.Map;
import java.util.function.IntFunction;
import java.util.stream.IntStream;

/**
 * @author Georgiy Korneev (kgeorgiy@kgeorgiy.info)
 */
public final class WsppTest {

    // === Base
    private static final Named<Comparator<Map.Entry<String, Integer>>> INPUT =
        Named.of("", Comparator.comparingInt(e -> 0));
    private static final Named<IntFunction<IntStream>> ALL = Named.of(
        "",
        size -> IntStream.range(0, size)
    );
    private static final Named<WsppTester.Extractor<Object>> WSPP = Named.of(
        "",
        (r, l, L, g, G) -> g
    );
    private static final Named<String> NONE = Named.of("", "");

    // === 3637
    private static final Named<Comparator<Map.Entry<String, Integer>>> LENGTH =
        Named.of(
            "",
            Map.Entry.comparingByKey(Comparator.comparingInt(String::length))
        );
    private static final Named<IntFunction<IntStream>> LAST = Named.of(
        "Last",
        size -> IntStream.of(size - 1)
    );
    private static final Named<String> JAVA = Named.of("", "XHB7TmR9JF8=");

    // === 3839
    private static final Named<IntFunction<IntStream>> MIDDLE = Named.of(
        "Middle",
        size -> IntStream.of(size / 2)
    );

    // === 3435
    public static final WsppTester.Extractor<String> POSITION = (
        r,
        l,
        L,
        g,
        G
    ) -> r + ":" + (G - g + 1);

    // === Common
    public static final Selector SELECTOR = new Selector(WsppTester.class)
        .variant("Base", WsppTester.variant(INPUT, ALL, WSPP, NONE))
        .variant("3637", WsppTester.variant(LENGTH, LAST, WSPP, JAVA))
        .variant("3839", WsppTester.variant(LENGTH, MIDDLE, WSPP, JAVA))
        .variant(
            "3435",
            WsppTester.variant(
                LENGTH,
                ALL,
                Named.of("Position", POSITION),
                JAVA
            )
        )
        .variant(
            "3233",
            WsppTester.variant(INPUT, ALL, Named.of("Pos", POSITION), JAVA)
        )
        .variant("4142", WsppTester.variant(LENGTH, LAST, WSPP, JAVA))
        .variant(
            "4749",
            WsppTester.variant(
                LENGTH,
                ALL,
                Named.of("Position", POSITION),
                JAVA
            )
        );

    private WsppTest() {}

    public static void main(final String... args) {
        SELECTOR.main(args);
    }
}