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package com.juick.components.configuration;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;
import com.juick.components.Crosspost;
import com.mitchellbosecke.pebble.PebbleEngine;
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.springframework.beans.factory.config.PlaceholderConfigurerSupport;
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.context.support.PropertySourcesPlaceholderConfigurer;
import org.springframework.core.env.Environment;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.jdbc.core.JdbcTemplate;
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 javax.inject.Inject;
import javax.servlet.ServletContext;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

/**
 * Created by vitalyster on 28.06.2016.
 */
@Configuration
@ComponentScan(basePackages = {"com.juick"})
@PropertySource(value = {"classpath:juick.conf", "file:${user.home}/juick.conf"})
public class CrosspostConfiguration extends WebMvcConfigurationSupport {
    @Inject
    private Environment env;
    @Inject
    private ServletContext servletContext;
    @Inject
    private JdbcTemplate jdbc;

    @Bean
    public static PlaceholderConfigurerSupport propertySourcesPlaceholderConfigurer() {
        PlaceholderConfigurerSupport configurer = new PropertySourcesPlaceholderConfigurer();

        configurer.setFileEncoding("utf-8");
        configurer.setOrder(1);
        return configurer;
    }

    @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())
                .build();
    }

    @Bean
    public ViewResolver viewResolver() {
        PebbleViewResolver viewResolver = new PebbleViewResolver();
        viewResolver.setPrefix("/WEB-INF/templates/");
        viewResolver.setSuffix(".html");
        viewResolver.setPebbleEngine(pebbleEngine());

        return viewResolver;
    }

    @Bean
    public Crosspost crosspost() {
        return new Crosspost(env, service(), jdbc);
    }

    @Bean
    public ExecutorService service() {
        return Executors.newCachedThreadPool();
    }

    @Override
    public RequestMappingHandlerMapping requestMappingHandlerMapping() {
        RequestMappingHandlerMapping mapping = super.requestMappingHandlerMapping();
        mapping.setUseSuffixPatternMatch(false);
        return mapping;
    }

    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.setOrder(0);
        registry.addResourceHandler("/scripts.js").addResourceLocations("/");
        registry.addResourceHandler("/style.css").addResourceLocations("/");
    }

    @Override
    protected void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder()
                .serializationInclusion(JsonInclude.Include.NON_DEFAULT)
                .serializationInclusion(JsonInclude.Include.NON_NULL)
                .serializationInclusion(JsonInclude.Include.NON_ABSENT)
                .serializationInclusion(JsonInclude.Include.NON_EMPTY);

        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter(builder.build());
        converter.getObjectMapper().registerModule(new Jdk8Module());
        converters.add(converter);

        super.configureMessageConverters(converters);
    }
}