/*
 * Copyright (C) 2008-2017, Juick
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.juick.www;

import com.gargoylesoftware.htmlunit.Page;
import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.css.StyleElement;
import com.gargoylesoftware.htmlunit.html.DomElement;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
import com.juick.Message;
import com.juick.Tag;
import com.juick.User;
import com.juick.configuration.MockDataConfiguration;
import com.juick.server.configuration.BaseWebConfiguration;
import com.juick.service.MessagesService;
import com.juick.service.UserService;
import com.juick.test.util.MockUtils;
import com.juick.util.MessageUtils;
import com.juick.www.configuration.SapeConfiguration;
import com.juick.www.configuration.WwwAppConfiguration;
import com.juick.www.configuration.WwwServletConfiguration;
import com.mitchellbosecke.pebble.PebbleEngine;
import com.mitchellbosecke.pebble.error.PebbleException;
import com.mitchellbosecke.pebble.template.PebbleTemplate;
import org.apache.commons.text.StringEscapeUtils;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
import org.springframework.test.web.servlet.htmlunit.MockMvcWebClientBuilder;
import org.springframework.web.context.WebApplicationContext;

import javax.inject.Inject;
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import java.util.stream.StreamSupport;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.startsWith;
import static org.mockito.Mockito.when;

/**
 * Created by vitalyster on 12.01.2017.
 */
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextConfiguration
public class WebAppTests {
    @Configuration
    @Import(value = {
            BaseWebConfiguration.class, WwwServletConfiguration.class, WwwAppConfiguration.class, SapeConfiguration.class,
            MockDataConfiguration.class
    })
    static class Config {}

    @Inject
    private WebApplicationContext wac;
    @Inject
    private WebApp webApp;

    private WebClient webClient;

    @Inject
    UserService userService;
    @Inject
    MessagesService messagesService;

    @Inject
    PebbleEngine pebbleEngine;

    @Before
    public void setup() {
        webClient = MockMvcWebClientBuilder.webAppContextSetup(this.wac).build();
        webClient.getOptions().setJavaScriptEnabled(false);
    }

    @Test
    public void postWithoutTagsShouldNotHaveAsteriskInTitle() throws Exception {
        String ugnichName = "ugnich";
        String ugnichPassword = "MyPassw0rd!";
        String msgText = "Привет, я - Угнич";
        String hash = "12345678";

        User user = MockUtils.mockUser(1, ugnichName, ugnichPassword);
        Message msg = MockUtils.mockMessage(1, user, msgText);

        when(userService.getUIDbyName(ugnichName))
                .thenReturn(1);
        when(userService.getUserByName(ugnichName))
                .thenReturn(user);
        when(userService.getUserByUID(1))
                .thenReturn(Optional.of(user));
        when(userService.getFullyUserByName(ugnichName))
                .thenReturn(user);
        when(messagesService.getMyFeed(1, 0))
                .thenReturn(Collections.singletonList(1));
        when(messagesService.getMessages(Collections.singletonList(1)))
                .thenReturn(Collections.singletonList(msg));
        when(userService.getUIDbyHash(hash))
                .thenReturn(1);
        when(messagesService.getMessageAuthor(1)).thenReturn(user);
        when(messagesService.canViewThread(1, 0)).thenReturn(true);
        when(messagesService.getMessage(1)).thenReturn(msg);
        HtmlPage threadPage = webClient.getPage("http://localhost:8080/ugnich/1");
        assertThat(threadPage.getTitleText(), equalTo("ugnich:"));
    }
    @Test
    public void bannedUserBlogandPostShouldReturn404() throws IOException {
        String userName = "isilmine";
        String userPassword = "secret";
        String msgText = "автор этого поста был забанен";
        String hash = "12345678";

        User user = MockUtils.mockUser(2, userName, userPassword);
        user.setBanned(true);
        Message msg = MockUtils.mockMessage(2, user, msgText);

        when(userService.getUIDbyName(userName))
                .thenReturn(2);
        when(userService.getUserByName(userName))
                .thenReturn(user);
        when(userService.getUserByUID(2))
                .thenReturn(Optional.of(user));
        when(userService.getFullyUserByName(userName))
                .thenReturn(user);
        when(messagesService.getMyFeed(2, 0))
                .thenReturn(Collections.singletonList(2));
        when(messagesService.getMessages(Collections.singletonList(2)))
                .thenReturn(Collections.singletonList(msg));
        when(userService.getUIDbyHash(hash))
                .thenReturn(1);
        when(messagesService.getMessageAuthor(2)).thenReturn(user);
        when(messagesService.canViewThread(2, 0)).thenReturn(true);
        when(messagesService.getMessage(2)).thenReturn(msg);
        webClient.getOptions().setThrowExceptionOnFailingStatusCode(false);
        Page blogPage = webClient.getPage("http://localhost:8080/isilmine");
        Page threadPage = webClient.getPage("http://localhost:8080/isilmine/2");
        assertThat(blogPage.getWebResponse().getStatusCode(), equalTo(404));
        assertThat(threadPage.getWebResponse().getStatusCode(), equalTo(404));
    }
    @Test
    public void repliesTree() throws IOException {
        User ugnich = MockUtils.mockUser(1, "ugnich", "secret");
        User freefd = MockUtils.mockUser(3, "freefd", "secret");
        Message hello = MockUtils.mockMessage(1, ugnich, null);
        List<Message> replies = IntStream.range(1, 15).mapToObj(i ->
                MockUtils.mockReply(hello.getMid(), i, freefd, i-1, null )).collect(Collectors.toList());

        when(userService.getUIDbyName("ugnich")).thenReturn(1);
        when(userService.getUIDbyName("freefd")).thenReturn(3);
        when(userService.getUserByName("ugnich")).thenReturn(ugnich);
        when(userService.getUserByName("freefd")).thenReturn(freefd);

        when(messagesService.canViewThread(1, 0)).thenReturn(true);
        when(messagesService.getMessage(1)).thenReturn(hello);
        when(messagesService.getReplies(1)).thenReturn(replies);

        HtmlPage threadPage = webClient.getPage("http://localhost:8080/ugnich/1");
        assertThat(threadPage.getWebResponse().getStatusCode(), equalTo(200));
        Long visibleItems = StreamSupport.stream(threadPage.getHtmlElementById("replies")
                .getChildElements().spliterator(), false).filter(e -> {
            StyleElement display = e.getStyleElement("display");
            return display == null || !display.getValue().equals("none");
        }).count();
        assertThat(visibleItems, equalTo(1L));
    }
    @Test
    public void correctTagsEscaping() throws PebbleException, IOException {
        PebbleTemplate template = pebbleEngine.getTemplate("views/test");
        Writer writer = new StringWriter();
        template.evaluate(writer,
                Collections.singletonMap("tagsList",
                        Collections.singletonList(StringEscapeUtils.escapeHtml4(new Tag(">_<").getName()))));
        String output = writer.toString().trim();
        assertThat(output, equalTo("<a href=\"/ugnich/?tag=%26gt%3B_%26lt%3B\">&gt;_&lt;</a>"));
    }

    public DomElement fetchMeta(String url, String name) throws IOException {
        HtmlPage threadPage = webClient.getPage(url);
        DomElement emptyMeta = new DomElement("", "meta", null, null);
        return threadPage.getElementsByTagName("meta").stream()
                .filter(t -> t.getAttribute("name").equals(name)).findFirst().orElse(emptyMeta);
    }
    @Test
    public void testTwitterCards() throws Exception {
        String ugnichName = "ugnich";
        String ugnichPassword = "MyPassw0rd!";
        String msgText = "Привет, я - Угнич";
        String hash = "12345678";

        User user = MockUtils.mockUser(1, ugnichName, ugnichPassword);
        Message msg = MockUtils.mockMessage(1, user, msgText);

        when(userService.getUIDbyName(ugnichName))
                .thenReturn(1);
        when(userService.getUserByName(ugnichName))
                .thenReturn(user);
        when(userService.getUserByUID(1))
                .thenReturn(Optional.of(user));
        when(userService.getFullyUserByName(ugnichName))
                .thenReturn(user);
        when(messagesService.getMyFeed(1, 0))
                .thenReturn(Collections.singletonList(1));
        when(messagesService.getMessages(Collections.singletonList(1)))
                .thenReturn(Collections.singletonList(msg));
        when(userService.getUIDbyHash(hash))
                .thenReturn(1);
        when(messagesService.getMessageAuthor(1)).thenReturn(user);
        when(messagesService.canViewThread(1, 0)).thenReturn(true);
        when(messagesService.getMessage(1)).thenReturn(msg);

        assertThat(fetchMeta("http://localhost:8080/ugnich/1", "twitter:card")
                .getAttribute("content"), equalTo("summary"));
        msg.setAttachmentType("png");
        assertThat(fetchMeta("http://localhost:8080/ugnich/1", "twitter:card")
                .getAttribute("content"), equalTo("summary_large_image"));
        assertThat(fetchMeta("http://localhost:8080/ugnich/1", "og:description")
                .getAttribute("content"),
                startsWith(StringEscapeUtils.escapeHtml4(MessageUtils.getMessageHashTags(msg))));

    }
}