/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2018 Yegor Bugayenko
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package org.cactoos.http;

import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;
import java.net.URI;
import org.cactoos.BiFunc;
import org.cactoos.http.io.ReadBytes;
import org.cactoos.io.DeadInput;
import org.cactoos.io.DeadInputStream;
import org.cactoos.text.FormattedText;
import org.cactoos.text.TextOf;
import org.hamcrest.MatcherAssert;
import org.hamcrest.core.IsNot;
import org.junit.Test;
import org.llorllale.cactoos.matchers.Assertion;
import org.llorllale.cactoos.matchers.IsTrue;
import org.llorllale.cactoos.matchers.TextHasString;
import org.mockito.Mockito;
import org.takes.http.FtRemote;
import org.takes.tk.TkText;

/**
 * Test case for {@link HtWire}.
 *
 * @since 0.1
 * @checkstyle JavadocMethodCheck (500 lines)
 * @checkstyle ClassDataAbstractionCouplingCheck (500 lines)
 */
public final class HtWireTest {

    /**
     * Default port for HTTP.
     */
    private static final int HTTP_PORT = 80;

    /**
     * Default port for HTTPS.
     */
    private static final int HTTPS_PORT = 443;

    @Test
    public void guessesCorrectPortForHttp() throws Exception {
        this.checkPorts("http://localhost", HtWireTest.HTTP_PORT);
    }

    @Test
    public void guessesCorrectPortForHttps() throws Exception {
        this.checkPorts("https://localhost", HtWireTest.HTTPS_PORT);
    }

    @Test
    public void guessesCorrectPortForExplicit() throws Exception {
        final int port = 1234;
        this.checkPorts(
            new FormattedText("https://localhost:%d", port).asString(),
            port
        );
    }

    @Test
    public void worksWithProvidedHostNameAndPort() throws IOException {
        new FtRemote(new TkText("Hello")).exec(
            home -> MatcherAssert.assertThat(
                new TextOf(
                    new HtResponse(
                        new HtWire(home.getHost(), home.getPort()),
                        new Get(home)
                    )
                ),
                new TextHasString("HTTP/1.1 200")
            )
        );
    }

    @Test
    @SuppressWarnings("PMD.AvoidCatchingGenericException")
    public void closesSocketOnlyAfterResponseIsClosed() throws Exception {
        new FtRemote(new TkText("Hey")).exec(
            home -> {
                @SuppressWarnings("resource")
                final Socket socket = new Socket(
                    home.getHost(),
                    home.getPort()
                );
                try (InputStream ins = new HtWire(() -> socket).send(
                    new Get(home)
                ).stream()) {
                    new Assertion<>(
                        "must have a response",
                        new TextOf(new ReadBytes(ins)),
                        new TextHasString("HTTP/1.1 200 OK")
                    ).affirm();
                    new Assertion<>(
                        "must keep the socket open until response is closed",
                        socket.isClosed(),
                        new IsNot<>(new IsTrue())
                    ).affirm();
                    // @checkstyle IllegalCatchCheck (1 line)
                } catch (final Exception ex) {
                    throw new IOException(ex);
                }
                new Assertion<>(
                    "must close the socket once input response is closed",
                    socket.isClosed(),
                    new IsTrue()
                ).affirm();
            }
        );
    }

    /**
     * Verify correct port is returned for given URL.
     * @param url URL to check
     * @param port Port number
     * @throws Exception In case of error
     */
    @SuppressWarnings("unchecked")
    private void checkPorts(final String url, final int port)
        throws Exception {
        final BiFunc<String, Integer, Socket> function =
            Mockito.mock(BiFunc.class);
        final Socket socket = this.socket();
        Mockito.when(function.apply(Mockito.any(), Mockito.any()))
            .thenReturn(socket);
        new HtWire(URI.create(url), function)
            .send(new DeadInput());
        Mockito.verify(function).apply(Mockito.any(), Mockito.eq(port));
    }

    /**
     * Create a mock socket.
     * @return A mock socket
     * @throws IOException In case of error
     */
    private Socket socket() throws IOException {
        final Socket socket = Mockito.mock(Socket.class);
        Mockito.when(socket.getInputStream()).thenReturn(new DeadInputStream());
        return socket;
    }
}