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/*
 * 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.mitchellbosecke.pebble.PebbleEngine;
import com.mitchellbosecke.pebble.extension.FormatterExtension;
import com.mitchellbosecke.pebble.loader.Loader;
import com.mitchellbosecke.pebble.loader.ServletLoader;
import com.mitchellbosecke.pebble.spring4.PebbleViewResolver;
import com.mitchellbosecke.pebble.spring4.extension.SpringExtension;
import org.apache.commons.codec.CharEncoding;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.http.CacheControl;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;
import org.springframework.web.servlet.resource.PathResourceResolver;

import javax.inject.Inject;
import javax.servlet.ServletContext;
import java.util.concurrent.TimeUnit;

/**
 * Created by vitalyster on 28.06.2016.
 */
@Configuration
@ComponentScan(basePackages = {"com.juick.www.controllers"})
@PropertySource("classpath:juick.conf")
public class WwwServletConfiguration extends WebMvcConfigurationSupport {

    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.setOrder(0);
        registry.addResourceHandler(
                "/scripts*.js*",
                "/style*.css*",
                "/*.png",
                "/favicon.ico")
                .addResourceLocations("classpath:/")
                .setCacheControl(CacheControl.maxAge(30, TimeUnit.DAYS).mustRevalidate().cachePublic())
                .resourceChain(true)
                .addResolver(new PathResourceResolver());

        registry.addResourceHandler("/static/**")
                .addResourceLocations("/static/")
                .setCacheControl(CacheControl.maxAge(30, TimeUnit.DAYS).mustRevalidate().cachePublic());
    }

    @Override
    public RequestMappingHandlerMapping requestMappingHandlerMapping() {
        RequestMappingHandlerMapping result = super.requestMappingHandlerMapping();

        result.setOrder(1);

        return result;
    }

    @Inject
    private ServletContext servletContext;

    @Bean
    public Loader templateLoader(){
        return new ServletLoader(servletContext);
    }

    @Bean
    public SpringExtension springExtension() {
        return new SpringExtension();
    }

    @Bean
    public PebbleEngine pebbleEngine() {
        return new PebbleEngine.Builder()
                .loader(this.templateLoader())
                .extension(springExtension())
                .extension(new FormatterExtension())
                .strictVariables(true)
                .build();
    }

    @Bean
    public ViewResolver viewResolver() {
        PebbleViewResolver viewResolver = new PebbleViewResolver();
        viewResolver.setPrefix("/WEB-INF/");
        viewResolver.setSuffix(".html");
        viewResolver.setPebbleEngine(pebbleEngine());
        viewResolver.setCharacterEncoding(CharEncoding.UTF_8);
        return viewResolver;
    }
}