package com.ekexiu.console.system.service;

import com.ekexiu.console.system.dao.DiscoverBannerDao;
import com.ekexiu.console.system.po.DiscoverBanner;
import com.ekexiu.console.system.vo.ConsoleAuthUser;
import freemarker.cache.TemplateLoader;
import freemarker.template.Configuration;
import freemarker.template.Template;
import freemarker.template.TemplateException;
import freemarker.template.TemplateExceptionHandler;
import org.jfw.apt.annotation.Autowrie;
import org.jfw.apt.annotation.DefaultValue;
import org.jfw.apt.annotation.Nullable;
import org.jfw.apt.web.annotation.LoginUser;
import org.jfw.apt.web.annotation.Path;
import org.jfw.apt.web.annotation.operate.Get;
import org.jfw.apt.web.annotation.operate.Post;
import org.jfw.apt.web.annotation.param.JdbcConn;
import org.jfw.apt.web.annotation.param.PathVar;
import org.jfw.apt.web.annotation.param.RequestParam;
import org.jfw.util.ConstData;
import org.jfw.util.DateUtil;
import org.jfw.util.PageQueryResult;

import java.io.*;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by TT on 2017/8/25.
 */
@Path("/disBanner")
public class DiscoverBannerService {

    private File source;
    private Configuration cfg = new Configuration(Configuration.VERSION_2_3_26);

    @Autowrie
    private DiscoverBannerDao discoverBannerDao;
    @Autowrie
    private ImageService imageService;

    public DiscoverBannerDao getDiscoverBannerDao() {
        return discoverBannerDao;
    }

    public void setDiscoverBannerDao(DiscoverBannerDao discoverBannerDao) {
        this.discoverBannerDao = discoverBannerDao;
    }

    public File getSource() {
        return source;
    }

    public void setSource(File source) {
        this.source = source;
        try {
            this.cfg.setDirectoryForTemplateLoading(source);
        } catch (IOException e) {
            this.source = null;
            this.cfg.setTemplateLoader(new TemplateLoader() {
                @Override
                public Reader getReader(Object templateSource, String encoding) throws IOException {
                    StringReader reader = new StringReader("TemplateService'source is invalid dir,so "+templateSource.toString()+" can't read");
                    return reader;
                }

                @Override
                public long getLastModified(Object templateSource) {
                    return 0;
                }

                @Override
                public Object findTemplateSource(String name) throws IOException {
                    return name;
                }

                @Override
                public void closeTemplateSource(Object templateSource) throws IOException {
                }
            });
        }
        cfg.setTemplateExceptionHandler(TemplateExceptionHandler.RETHROW_HANDLER);
    }

    public void genCnt(String templateName,File dest,Map<String,Object> root) throws IOException, TemplateException {
        if(dest.exists()){
            if(!dest.delete()){
                throw new IOException("delete file["+dest.getAbsolutePath()+"] error");
            }
        }
        Template template = this.cfg.getTemplate(templateName,"UTF-8");
        OutputStream out = new FileOutputStream(dest);
        try {
            template.process(root, new OutputStreamWriter(out, ConstData.UTF8));
            out.flush();
        } finally {
            out.close();
        }
    }

    @Path
    @Post
    public void insert(@JdbcConn(true) Connection con,@RequestParam(excludeFields = {"createTime", "modifyTime", "id"}) DiscoverBanner discoverBanner,@Nullable String fn) throws SQLException, IOException {
        long id = this.discoverBannerDao.insert(con, discoverBanner);
        this.imageService.saveBannerImage(id, fn);

    }

    @Path("/id/{id}")
    @Get
    public DiscoverBanner query(@JdbcConn Connection con,@PathVar long id)throws SQLException {
        return this.discoverBannerDao.query(con, id);
    }

    @Path("/update")
    @Post
    public void update(@JdbcConn(true) Connection con, DiscoverBanner banner,@Nullable String fn) throws SQLException, IOException {
        this.discoverBannerDao.update(con, banner);
        this.imageService.saveBannerImage(banner.getId(), fn);
    }

    @Path("/pq")
    @Get
    public PageQueryResult<DiscoverBanner> pageQuery(@JdbcConn Connection con, @Nullable String title, @DefaultValue("1") int pageNo, @DefaultValue("10") int pageSize) throws SQLException {
        return this.discoverBannerDao.query(con,title,pageNo,pageSize);
    }

    @Path("/putOn")
    @Post
    public void putOn(@JdbcConn(true) Connection con, Long[] ids, @LoginUser ConsoleAuthUser user) throws SQLException {

        this.setSource(new File("D:/tmp/banner"));
        ArrayList<Banner> banners = new ArrayList<>();
        for (int i=0;i<5;i++) {
            DiscoverBanner discoverBanner = this.discoverBannerDao.query(con, ids[i]);
            discoverBanner.setBeginTime(DateUtil.formatDateTime(System.currentTimeMillis()));
            discoverBanner.setModifier(user.getId());
            this.discoverBannerDao.update(con, discoverBanner);
            Banner b = new Banner();
            b.setId(discoverBanner.getArticleId());
            b.setImage("image"+i);
            b.setBanner(discoverBanner.getBanner());
            b.setTitle(discoverBanner.getTitle());
            banners.add(b);
        }
        Map<String, Object> root = new HashMap<String, Object>();
        root.put("banner", banners);
        try {
            this.genCnt("slideTab.html",new File("D:/tmp/banner/generate.html"),root);
            this.genCnt("appfound.html",new File("D:/tmp/banner/generateApp.html"),root);
        } catch (IOException | TemplateException e) {
            e.printStackTrace();
        }
    }


    public static class Banner{
        private String id;
        private String image;
        private String title;
        private int banner;

        public String getId() {
            return id;
        }

        public void setId(String id) {
            this.id = id;
        }

        public String getImage() {
            return image;
        }

        public void setImage(String image) {
            this.image = image;
        }

        public String getTitle() {
            return title;
        }

        public void setTitle(String title) {
            this.title = title;
        }

        public int getBanner() {
            return banner;
        }

        public void setBanner(int banner) {
            this.banner = banner;
        }
    }
    
}