/*
 * 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.configuration;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.juick.service.TagService;
import com.juick.service.UserService;
import com.juick.www.HelpService;
import com.juick.www.WebApp;
import org.apache.commons.io.IOUtils;
import org.commonmark.ext.autolink.AutolinkExtension;
import org.commonmark.node.Link;
import org.commonmark.parser.Parser;
import org.commonmark.renderer.html.HtmlRenderer;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.caffeine.CaffeineCacheManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;

import javax.inject.Inject;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.Collections;
import java.util.HashMap;

/**
 * Created by aalexeev on 11/22/16.
 */
@Configuration
@PropertySource("classpath:juick.conf")
@EnableCaching
public class WwwAppConfiguration {
    @Inject
    private UserService userService;
    @Inject
    private TagService tagService;
    @Inject
    private ObjectMapper jsonMapper;

    @Bean
    public WebApp webApp() throws IOException {
        WebApp app = new WebApp();
        String manifestString = IOUtils.toString(getClass().getClassLoader().getResourceAsStream("manifest.json"), StandardCharsets.UTF_8);
        HashMap<String, String> manifest = jsonMapper.readValue(manifestString,
                new TypeReference<HashMap<String, String>>() {});
        app.setScriptsUrl(manifest.get("scripts.js"));
        app.setStyleUrl(manifest.get("style.css"));
        return app;
    }
    @Bean
    public CaffeineCacheManager cacheManager() {
        return new CaffeineCacheManager("help");
    }

    @Bean
    public HelpService helpService() {
        return new HelpService("help");
    }

    @Bean
    public Parser cmParser() {
        return Parser.builder().extensions(Collections.singletonList(AutolinkExtension.create())).build();
    }
    @Bean
    public HtmlRenderer helpRenderer() {
        return HtmlRenderer.builder()
                .attributeProviderFactory(context -> (node, tagName, attributes) -> {
                    if (node instanceof Link) {
                        Link link = (Link) node;
                        if (link.getDestination().startsWith("/")) {
                            String destination = "/" + helpService().getHelpPath() + link.getDestination();
                            link.setDestination(destination);
                            attributes.put("href", destination);
                        }
                    }
                })
                .build();
    }

}