package com.lf.server.service.all;

import com.lf.server.entity.data.DirEntity;
import com.lf.server.entity.data.MetaFileEntity;
import com.lf.server.helper.*;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.support.StandardMultipartHttpServletRequest;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.lang.reflect.Field;
import java.sql.Timestamp;
import java.util.*;

/**
 * 父上传服务
 * @author WWW
 */
@Service
public class BaseUploadService {
    private final static String XLS = ".xls";

    private final static String MDB = ".mdb";

    private final static String GDB = ".gdb";

    private final static String SHP_ZIP = ".shp.zip";

    private final static String GDB_ZIP = ".gdb.zip";

    private final static String ZIP = ".zip";

    @Autowired
    public PathHelper pathHelper;

    public final Log log = LogFactory.getLog(getClass());

    /**
     * 查询目录
     */
    public String selectPath() {
        return pathHelper.getTempPathName();
    }

    /**
     * 上传文件
     */
    public <T> List<MetaFileEntity> uploadData(T t, String path, HttpServletRequest req, HttpServletResponse res) throws Exception {
        StandardMultipartHttpServletRequest request = (StandardMultipartHttpServletRequest) req;
        req.setCharacterEncoding("utf-8");
        res.setContentType("application/json;charset=utf-8");

        if (t != null) {
            setEntity(t, request);
        }

        return getFiles(path, request);
    }

    /**
     * 设置实体类
     */
    private <T> void setEntity(T t, StandardMultipartHttpServletRequest req) {
        Enumeration<String> enumeration = req.getParameterNames();
        while (enumeration.hasMoreElements()) {
            String key = enumeration.nextElement();

            try {
                Field field = t.getClass().getDeclaredField(key);
                field.setAccessible(true);
                String value = req.getParameter(key);

                switch (field.getType().toString()) {
                    case "double":
                        field.set(t, Double.valueOf(value));
                        break;
                    case "long":
                        field.set(t, Long.valueOf(value));
                        break;
                    case "int":
                        field.set(t, Integer.valueOf(value));
                        break;
                    case "class java.sql.Timestamp":
                        field.set(t, Timestamp.valueOf(value));
                        break;
                    //case "class java.lang.String":
                    default:
                        field.set(t, value);
                        break;
                }
            } catch (Exception ex) {
                log.error(ex.getMessage(), ex);
            }
        }
    }

    /**
     * 获取文件
     */
    public List<MetaFileEntity> getFiles(String subPath, StandardMultipartHttpServletRequest req) throws Exception {
        List<MetaFileEntity> list = new ArrayList<>();

        String path = pathHelper.getTempPath(subPath);
        Iterator<String> iterator = req.getFileNames();
        while (iterator.hasNext()) {
            MultipartFile file = req.getFile(iterator.next());
            if (null == file || StringHelper.isEmpty(file.getOriginalFilename())) {
                continue;
            }

            MetaFileEntity mf = new MetaFileEntity();
            mf.setName(file.getOriginalFilename());

            double sizes = FileHelper.sizeToMb(file.getSize());
            mf.setSizes(sizes);
            mf.setPath(path + File.separator + mf.getName());

            file.transferTo(new File(mf.getPath()));
            mf.setGuid(FileHelper.getFileMd5(mf.getPath()));

            list.add(mf);
        }

        return list;
    }

    /**
     * 查询文件
     */
    public List<MetaFileEntity> selectFiles(String subPath, List<String> extList) {
        String root = pathHelper.getConfig().getTempPath() + File.separator + subPath;

        File file = new File(root);
        if (!file.exists() && !file.isDirectory()) {
            return null;
        }
        File[] files = file.listFiles();
        if (null == files || files.length == 0) {
            return null;
        }

        List<MetaFileEntity> list = new ArrayList<>();
        for (File f : files) {
            String fileName = FileHelper.getFileName(f.getPath());
            String extName = FileHelper.getExtension(fileName);
            if (null != extList && !extList.contains(extName)) {
                continue;
            }

            MetaFileEntity mf = new MetaFileEntity();
            mf.setName(fileName);
            mf.setExtName(extName);
            mf.setSizes(FileHelper.sizeToMb(f.length()));
            mf.setPath(subPath + File.separator + fileName);
            // mf.setGuid(FileHelper.getFileMd5(f.getPath()))

            list.add(mf);
        }

        return list;
    }

    /**
     * 删除文件
     */
    public Integer deleteFiles(List<MetaFileEntity> list) {
        String root = pathHelper.getConfig().getTempPath();

        int count = 0;
        for (MetaFileEntity entity : list) {
            if (!StringHelper.isEmpty(entity.getPath())) {
                String file = root + File.separator + entity.getPath();

                File f = new File(file);
                if (f.exists()) {
                    f.delete();
                    count++;
                }
            }
        }

        return count;
    }

    /**
     * 查询映射
     */
    public List<MetaFileEntity> selectMappers(List<MetaFileEntity> metas, DirEntity dir, String epsgCode) {
        List<MetaFileEntity> list = new ArrayList<>();
        for (MetaFileEntity meta : metas) {
            //
        }

        return list;
    }

    /*private List<TabMapperEntity> getMappers(String zipPath, File[] files) {
        String temp = pathHelper.getConfig().getTempPath();

        List<TabMapperEntity> list = new ArrayList<>();
        for (File f : files) {
            String fileName = FileHelper.getFileName(f.getPath());
            if (fileName.contains(XLS)) {
                String path = f.getPath().replace(temp + File.separator, "");
                list.add(new TabMapperEntity(fileName, "xls", null, path));
                continue;
            }
            if (fileName.contains(MDB)) {
                String path = f.getPath().replace(temp + File.separator, "");
                List<String> tabs = MdbHelper.getTabNames(f.getPath());
                for (String tab : tabs) {
                    list.add(new TabMapperEntity(fileName, "mdb", tab, path));
                }
                continue;
            }
            if (fileName.contains(SHP_ZIP)) {
                String subPath = zipPath + File.separator + f.getName().toLowerCase().replace(".zip", "");
                ZipHelper.unzip(f.getPath(), subPath);
                getShpFiles(f.getName(), subPath, list);
                continue;
            }
            if (fileName.contains(GDB_ZIP)) {
                String subPath = zipPath + File.separator + f.getName().toLowerCase().replace(".zip", "");
                ZipHelper.unzip(f.getPath(), subPath);
                getGdbFiles(f.getName(), subPath, list);
                continue;
            }
            if (fileName.contains(ZIP)) {
                // 暂时不实现
            }
        }

        return list;
    }

    private void getShpFiles(String sourceName, String subPath, List<TabMapperEntity> list) {
        List<String> files = new ArrayList<>();
        getShpFiles(subPath, files);

        String root = pathHelper.getConfig().getTempPath() + File.separator;
        for (String file : files) {
            String name = FileHelper.getFileName(file);
            String path = file.replace(root, "");
            list.add(new TabMapperEntity(sourceName, "shp", name, path));
        }
    }

    private void getShpFiles(String shpPath, List<String> list) {
        File file = new File(shpPath);

        File[] files = file.listFiles();
        if (null == files || files.length == 0) {
            return;
        }

        for (File f : files) {
            if (f.isDirectory()) {
                getShpFiles(f.getPath(), list);
                continue;
            }

            if (f.getName().toLowerCase().endsWith(".shp")) {
                list.add(f.getPath());
            }
        }
    }

    private void getGdbFiles(String sourceName, String subPath, List<TabMapperEntity> list) {
        List<String> files = new ArrayList<>();
        getGdbFiles(subPath, files);

        String root = pathHelper.getConfig().getTempPath() + File.separator;
        for (String file : files) {
            String path = file.replace(root, "");
            List<String> tabs = GdbHelper.getTabNames(file);
            for (String tab : tabs) {
                list.add(new TabMapperEntity(sourceName, "gdb", tab, path));
            }
        }
    }

    private void getGdbFiles(String shpPath, List<String> list) {
        File file = new File(shpPath);

        File[] files = file.listFiles();
        if (null == files || files.length == 0) {
            return;
        }

        for (File f : files) {
            if (!f.isDirectory()) {
                continue;
            }

            if (isGdbFile(f)) {
                list.add(f.getPath());
                continue;
            }

            getGdbFiles(f.getPath(), list);
        }
    }*/

    private boolean isGdbFile(File f) {
        if (f.getName().toLowerCase().endsWith(GDB)) {
            File[] files = f.listFiles();
            if (null == files || files.length == 0) {
                return false;
            }

            for (File file : files) {
                if ("gdb".equals(file.getName())) {
                    return true;
                }
            }
        }

        return false;
    }

    /**
     * 获取参数
     * Enumeration<String> headers = req.getHeaderNames();
     * Enumeration<String> attributes = req.getAttributeNames();
     */
    public Map<String, String> getParams(StandardMultipartHttpServletRequest req) {
        Map<String, String> map = new HashMap<String, String>(3);

        Enumeration<String> enumeration = req.getParameterNames();
        while (enumeration.hasMoreElements()) {
            String key = enumeration.nextElement();
            String value = req.getParameter(key);
            map.put(key, value);
        }

        return map;
    }
}