package com.lf.server.service.data;

import com.lf.server.entity.all.BaseEntity;
import com.lf.server.entity.ctrl.TabMapperEntity;
import com.lf.server.entity.data.MetaEntity;
import com.lf.server.helper.*;
import com.lf.server.mapper.all.BasicMapper;
import com.lf.server.mapper.all.GeomBaseMapper;
import com.lf.server.service.all.BaseQueryService;
import com.lf.server.service.all.BaseUploadService;
import org.apache.commons.text.StringEscapeUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.io.File;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;

/**
 * 数据入库
 * @author WWW
 */
@Service
public class DataLoaderService extends BaseUploadService {
    @Autowired
    MetaService metaService;

    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";

    /**
     * 查询映射
     */
    public List<TabMapperEntity> selectMappers(String subPath) {
        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;
        }

        File zipFile = new File(root + "_zip");
        if (!zipFile.exists() || !zipFile.isDirectory()) {
            zipFile.mkdirs();
        }

        return getMappers(zipFile.getPath(), files);
    }

    /**
     * 获取映射
     */
    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;
    }

    /**
     * 获取Shp文件
     */
    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));
        }
    }

    /**
     * 获取Shp文件
     */
    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());
            }
        }
    }

    /**
     * 获取Gdb文件
     */
    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));
            }
        }
    }

    /**
     * 获取Gdb文件
     */
    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;
    }

    /**
     * 插入文件
     */
    public void insertFiles(MetaEntity entity, List<MetaEntity> list, List<TabMapperEntity> tabList) {
        try {
            String temp = pathHelper.getConfig().getTempPath();
            String upload = pathHelper.getUploadFullPath();

            for (MetaEntity mf : list) {
                File file = new File(temp + File.separator + mf.getPath());
                File newFile = new File(upload + File.separator + mf.getGuid());

                String type = getType(mf.getName().toLowerCase());
                if (null == type) {
                    file.delete();
                    continue;
                }

                // 获取表映射
                List<TabMapperEntity> tabs = getTabs(mf, tabList);
                if (tabs.isEmpty()) {
                    file.delete();
                    continue;
                }

                MetaEntity old = metaService.selectByGuid(mf.getGuid());
                String filePath = null == old ? newFile.getPath() : old.getPath();

                int count = 0;
                for (TabMapperEntity tab : tabs) {
                    if (null == tab || StringHelper.isEmpty(tab.getEntity())) {
                        return;
                    }
                    switch (type) {
                        case "shp":
                        case "gdb":
                        case "mdb":
                            insertDb(type, temp, entity, tab);
                            break;
                        // case "xls":
                        default:
                            insertXls(temp, entity, mf, tab);
                            break;
                    }
                    if (0 == tab.getRows()) {
                        continue;
                    }

                    MetaEntity me = createMetaEntity(entity, mf, tab.getTab(), tab.getRows());
                    if (metaService.insert(me) == 0) {
                        continue;
                    }

                    MetaEntity mfe = createMetaFileEntity(me, mf, filePath);
                    if (metaService.insert(mfe) == 0) {
                        metaService.delete(me.getId());
                        continue;
                    }
                    count += tab.getRows();
                }

                if (count == 0 || null != old) {
                    file.delete();
                } else {
                    file.renameTo(newFile);
                }
            }
        } catch (Exception ex) {
            log.error(ex.getMessage(), ex);
        }
    }

    /**
     * 获取 Tabs
     */
    private List<TabMapperEntity> getTabs(MetaEntity mfe, List<TabMapperEntity> tabs) {
        List<TabMapperEntity> list = new ArrayList<>();
        for (TabMapperEntity tab : tabs) {
            if (!tab.getFileName().equals(mfe.getName()) || StringHelper.isEmpty(tab.getEntity())) {
                continue;
            }

            list.add(tab);
        }

        return list;
    }

    /**
     * 获取文件类型
     */
    private String getType(String name) {
        if (name.contains(XLS)) {
            return "xls";
        }
        if (name.contains(MDB)) {
            return "mdb";
        }
        if (name.contains(SHP_ZIP)) {
            return "shp";
        }
        if (name.contains(GDB_ZIP)) {
            return "gdb";
        }

        return null;
    }

    /**
     * 创建元数据实体
     */
    private MetaEntity createMetaEntity(MetaEntity entity, MetaEntity mf, String tab, int rows) {
        MetaEntity me = new MetaEntity();
        me.setDepid(entity.getDepid());
        me.setDirid(entity.getDirid());
        me.setVerid(entity.getVerid());
        me.setType(getType(mf.getName().toLowerCase()));
        me.setName(mf.getName());
        me.setSizes(mf.getSizes());
        me.setBstab(tab);
        me.setBsrows(rows);
        me.setCreateTime(entity.getCreateTime());
        me.setCreateUser(entity.getCreateUser());

        return me;
    }

    /**
     * 创建元数据文件实体
     */
    private MetaEntity createMetaFileEntity(MetaEntity me, MetaEntity entity, String filePath) {
        MetaEntity mfe = new MetaEntity();
        mfe.setName(entity.getName());
        mfe.setMetaid(me.getId());
        mfe.setGuid(entity.getGuid());
        mfe.setSizes(entity.getSizes());
        mfe.setPath(FileHelper.getRelativePath(filePath));
        mfe.setCreateUser(me.getCreateUser());
        mfe.setCreateTime(me.getCreateTime());

        return mfe;
    }

    /**
     * 插入Excel
     */
    private void insertXls(String root, MetaEntity me, MetaEntity mf, TabMapperEntity tab) {
        BasicMapper basicMapper = ClassHelper.getBasicMapper(tab.getEntity());
        if (null == basicMapper) {
            return;
        }

        String tabName = BaseQueryService.getTabName(basicMapper);
        String className = ClassHelper.getClassName(basicMapper);
        Class clazz = ClassHelper.getEntityClass(className);
        if (null == clazz || null == tabName) {
            return;
        }

        List<?> list = ExcelHelper.readExcel(clazz, root + File.separator + mf.getPath());
        if (list.isEmpty()) {
            return;
        }
        setCreateInfo(list, me);

        int rows = 0;
        for (int i = 0, c = list.size(); i < c; i++) {
            rows += basicMapper.insert(list.get(i));
        }
        if (basicMapper instanceof GeomBaseMapper) {
            updateXlsGeom((GeomBaseMapper) basicMapper, list);
        }

        tab.setTab(tabName);
        tab.setRows(rows);
    }

    /**
     * 设置创建信息
     */
    private <T> void setCreateInfo(List<T> list, MetaEntity me) {
        try {
            if (!(list.get(0) instanceof BaseEntity)) {
                return;
            }

            for (T t : list) {
                BaseEntity be = (BaseEntity) t;
                be.setCreateuser(me.getCreateUser());
                be.setCreatetime(me.getCreateTime());
                be.setDirid(me.getDirid());
                be.setDepid(me.getDepid());
                be.setVerid(me.getVerid());
            }
        } catch (Exception ex) {
            log.error(ex.getMessage(), ex);
        }
    }

    /**
     * 设置空间信息
     */
    private <T> void updateXlsGeom(GeomBaseMapper geomBaseMapper, List<T> list) {
        try {
            String tabName = BaseQueryService.getTabName(geomBaseMapper);
            for (T t : list) {
                Field xField = t.getClass().getDeclaredField("x");
                xField.setAccessible(true);
                double x = (double) xField.get(t);

                Field yField = t.getClass().getDeclaredField("y");
                yField.setAccessible(true);
                double y = (double) yField.get(t);

                BaseEntity baseEntity = (BaseEntity) t;
                Integer gid = baseEntity.getGid();

                String wkt = String.format("POINT(%f %f)", x, y);
                geomBaseMapper.updateGeom(tabName, gid, wkt);
            }
        } catch (Exception ex) {
            log.error(ex.getMessage(), ex);
        }
    }

    /**
     * 插入DB
     */
    private void insertDb(String type, String root, MetaEntity me, TabMapperEntity tab) {
        BasicMapper basicMapper = ClassHelper.getBasicMapper(tab.getEntity());
        if (null == basicMapper) {
            return;
        }

        String tabName = BaseQueryService.getTabName(basicMapper);
        String className = ClassHelper.getClassName(basicMapper);
        Class clazz = ClassHelper.getEntityClass(className);
        if (null == clazz || null == tabName) {
            return;
        }

        String filePath = StringEscapeUtils.escapeJava(root + File.separator + tab.getSubPath());
        List<?> list = null;
        switch (type) {
            case "shp":
                list = ShpHelper.readData(clazz, filePath);
                break;
            case "gdb":
                list = GdbHelper.readData(clazz, filePath, tab.getTab());
                break;
            case "mdb":
                list = MdbHelper.readData(clazz, filePath, tab.getTab());
                break;
            default:
                break;
        }
        if (null == list || list.isEmpty()) {
            return;
        }
        setCreateInfo(list, me);

        int rows = basicMapper.insertBatch(list);
        tab.setTab(tabName);
        tab.setRows(rows);
    }

    /**
     * 设置空间信息
     */
    private <T> void updateDbGeom(GeomBaseMapper geomBaseMapper, List<T> list) {
        try {
            String tabName = BaseQueryService.getTabName(geomBaseMapper);
            for (T t : list) {
                BaseEntity baseEntity = (BaseEntity) t;
                Integer gid = baseEntity.getGid();

                Field gField = t.getClass().getDeclaredField("geom");
                gField.setAccessible(true);
                Object obj = gField.get(t);

                if (null != obj) {
                    geomBaseMapper.updateGeom(tabName, gid, (String) obj);
                }
            }
        } catch (Exception ex) {
            log.error(ex.getMessage(), ex);
        }
    }
}