package com.lf.server.service.data;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
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.entity.data.MetaFileEntity;
import com.lf.server.helper.ClassHelper;
import com.lf.server.helper.ExcelHelper;
import com.lf.server.helper.FileHelper;
import com.lf.server.mapper.all.GeomBaseMapper;
import com.lf.server.service.all.BaseQueryService;
import com.lf.server.service.all.BaseUploadService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

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

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

    @Autowired
    MetaFileService metaFileService;

    private final static String XLS = ".xls";

    private final static String MDB = ".mdb";

    private final static String SHP = ".shp";

    private final static String GDB = ".gdb";

    /**
     * 插入文件
     */
    public int insertFiles(MetaEntity entity, List<MetaFileEntity> list, List<TabMapperEntity> tabs) {
        int count = 0;
        try {
            String temp = pathHelper.getConfig().getTempPath();
            String root = pathHelper.getUploadFullPath();

            for (MetaFileEntity mf : list) {
                String filePath = getFilePath(temp, root, mf);
                if (null == filePath) {
                    continue;
                }

                // 元数据
                MetaEntity me = createMetaEntity(entity, mf);
                if (metaService.insert(me) < 1) {
                    continue;
                }

                // 元数据文件
                MetaFileEntity mfe = createMetaFileEntity(me, mf, filePath);
                if (metaFileService.insert(mfe) < 1) {
                    continue;
                }

                // 入库
                if (null != me.getType() && insertDb(me, mfe, tabs) > 0) {
                    count++;
                }
            }
        } catch (Exception ex) {
            log.error(ex.getMessage(), ex);
        }

        return count;
    }

    /**
     * 获取文件路径
     */
    private String getFilePath(String temp, String root, MetaFileEntity mf) {
        // 移动文件
        File file = new File(temp + File.separator + mf.getPath());
        File newFile = new File(root + File.separator + mf.getGuid());

        // 文件类型
        String metaType = getType(mf.getName().toLowerCase());
        if (null == metaType) {
            file.delete();
            return null;
        }

        MetaFileEntity old = metaFileService.selectByGuid(mf.getGuid());

        String filePath = null;
        if (null == old) {
            filePath = newFile.getPath();
            file.renameTo(newFile);
        } else {
            filePath = old.getPath();
            file.delete();
        }

        return filePath;
    }

    /**
     * 创建元数据实体
     */
    private MetaEntity createMetaEntity(MetaEntity entity, MetaFileEntity mf) {
        MetaEntity me = new MetaEntity();
        me.setDepid(entity.getDepid());
        me.setDirid(entity.getDirid());
        me.setVerid(entity.getVerid());
        me.setType(getType(mf.getName().toLowerCase()));
        me.setGather(entity.getGather());
        me.setBatch(entity.getBatch());
        me.setDescr(entity.getDescr());
        me.setName(mf.getName());
        me.setSizes(mf.getSizes());
        me.setCreateTime(entity.getCreateTime());
        me.setCreateUser(entity.getCreateUser());

        return me;
    }

    /**
     * 创建元数据文件实体
     */
    private MetaFileEntity createMetaFileEntity(MetaEntity me, MetaFileEntity entity, String filePath) {
        MetaFileEntity mfe = new MetaFileEntity();
        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;
    }

    /**
     * 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)) {
            return "shp";
        }
        if (name.contains(GDB)) {
            return "gdb";
        }

        return null;
    }

    /**
     * 插入数据库
     */
    private Integer insertDb(MetaEntity me, MetaFileEntity mfe, List<TabMapperEntity> tabs) {
        String root = pathHelper.getConfig().getUploadPath();
        switch (me.getType()) {
            case "xls":
                return insertXls(root, mfe, tabs);
            case "mdb":
                return insertMdb(root, mfe, tabs);
            case "shp":
                return insertShp(root, mfe, tabs);
            case "gdb":
                return insertGdb(root, mfe, tabs);
            default:
                return 0;
        }
    }

    /**
     * 插入Excel
     */
    private Integer insertXls(String root, MetaFileEntity mfe, List<TabMapperEntity> tabs) {
        TabMapperEntity tab = getTabEntity(mfe, tabs);
        if (null == tab) {
            return 0;
        }

        BaseMapper baseMapper = ClassHelper.getBasicMapper(tab.getEntity());
        if (null == baseMapper) {
            return 0;
        }

        String className = ClassHelper.getClassName(baseMapper);
        Class clazz = ClassHelper.getEntityClass(className);
        if (null == clazz) {
            return 0;
        }

        List<?> list = ExcelHelper.readExcel(clazz, root + File.separator + mfe.getPath());
        if (null == list || list.isEmpty()) {
            return 0;
        }

        setCreateInfo(list, mfe);

        int rows = 0;
        for (int i = 0, c = list.size(); i < c; i++) {
            rows += baseMapper.insert(list.get(i));
        }

        if (baseMapper instanceof GeomBaseMapper) {
            GeomBaseMapper geomBaseMapper = (GeomBaseMapper) baseMapper;
            updateGeom(geomBaseMapper, list);
        }

        return rows;
    }

    /**
     * 设置创建信息
     */
    @SuppressWarnings("AlibabaRemoveCommentedCode")
    private <T> void setCreateInfo(List<T> list, MetaFileEntity mfe) {
        try {
            for (T t : list) {
                Field cuField = t.getClass().getDeclaredField("createuser");
                cuField.setAccessible(true);
                cuField.set(t, mfe.getCreateUser());

                Field ctField = t.getClass().getDeclaredField("createtime");
                ctField.setAccessible(true);
                ctField.set(t, mfe.getCreateTime());
            }
        } catch (Exception ex) {
            log.error(ex.getMessage(), ex);
        }
    }

    /**
     * 设置空间信息
     */
    private <T> void updateGeom(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MDB
     */
    private Integer insertMdb(String root, MetaFileEntity mfe, List<TabMapperEntity> tabs) {

        return 0;
    }

    /**
     * 插入SHP
     */
    private Integer insertShp(String root, MetaFileEntity mfe, List<TabMapperEntity> tabs) {

        return 0;
    }

    /**
     * 插入GDB
     */
    private Integer insertGdb(String root, MetaFileEntity mfe, List<TabMapperEntity> tabs) {

        return 0;
    }

    /**
     * 获取表映射实体类
     */
    private TabMapperEntity getTabEntity(MetaFileEntity mfe, List<TabMapperEntity> tabs) {
        for (TabMapperEntity tab : tabs) {
            if (tab.getFileName().equals(mfe.getName())) {
                return tab;
            }
        }

        return null;
    }
}