package com.ots.project.tool.gen.service;
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import com.alibaba.fastjson.JSON;
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import com.alibaba.fastjson.JSONObject;
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import com.ots.common.constant.Constants;
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import com.ots.common.constant.GenConstants;
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import com.ots.common.exception.BusinessException;
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import com.ots.common.utils.StringUtils;
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import com.ots.common.utils.security.ShiroUtils;
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import com.ots.common.utils.text.Convert;
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import com.ots.project.tool.gen.domain.GenTable;
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import com.ots.project.tool.gen.domain.GenTableColumn;
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import com.ots.project.tool.gen.mapper.GenTableColumnMapper;
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import com.ots.project.tool.gen.mapper.GenTableMapper;
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import com.ots.project.tool.gen.util.GenUtils;
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import com.ots.project.tool.gen.util.VelocityInitializer;
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import com.ots.project.tool.gen.util.VelocityUtils;
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import org.apache.commons.io.IOUtils;
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import org.apache.velocity.Template;
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import org.apache.velocity.VelocityContext;
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import org.apache.velocity.app.Velocity;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.StringWriter;
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import java.util.LinkedHashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipOutputStream;
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@Service
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public class GenTableServiceImpl implements IGenTableService {
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private static final Logger log = LoggerFactory.getLogger(GenTableServiceImpl.class);
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@Autowired
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private GenTableMapper genTableMapper;
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@Autowired
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private GenTableColumnMapper genTableColumnMapper;
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@Override
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public GenTable selectGenTableById(Long id) {
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GenTable genTable = genTableMapper.selectGenTableById(id);
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setTableFromOptions(genTable);
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return genTable;
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}
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@Override
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public List<GenTable> selectGenTableList(GenTable genTable) {
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return genTableMapper.selectGenTableList(genTable);
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}
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public List<GenTable> selectDbTableList(GenTable genTable) {
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return genTableMapper.selectDbTableList(genTable);
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}
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public List<GenTable> selectDbTableListByNames(String[] tableNames) {
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return genTableMapper.selectDbTableListByNames(tableNames);
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}
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@Override
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@Transactional
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public void updateGenTable(GenTable genTable) {
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String options = JSON.toJSONString(genTable.getParams());
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genTable.setOptions(options);
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int row = genTableMapper.updateGenTable(genTable);
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if (row > 0) {
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for (GenTableColumn cenTableColumn : genTable.getColumns()) {
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genTableColumnMapper.updateGenTableColumn(cenTableColumn);
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}
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}
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}
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@Override
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@Transactional
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public void deleteGenTableByIds(String ids) {
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genTableMapper.deleteGenTableByIds(Convert.toLongArray(ids));
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genTableColumnMapper.deleteGenTableColumnByIds(Convert.toLongArray(ids));
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}
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@Override
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@Transactional
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public void importGenTable(List<GenTable> tableList) {
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String operName = ShiroUtils.getLoginName();
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for (GenTable table : tableList) {
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try {
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String tableName = table.getTableName();
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GenUtils.initTable(table, operName);
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int row = genTableMapper.insertGenTable(table);
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if (row > 0) {
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List<GenTableColumn> genTableColumns = genTableColumnMapper.selectDbTableColumnsByName(tableName);
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for (GenTableColumn column : genTableColumns) {
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GenUtils.initColumnField(column, table);
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genTableColumnMapper.insertGenTableColumn(column);
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}
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}
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} catch (Exception e) {
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log.error("表名 " + table.getTableName() + " 导入失败：", e);
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}
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}
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}
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public Map<String, String> previewCode(Long tableId) {
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Map<String, String> dataMap = new LinkedHashMap<>();
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GenTable table = genTableMapper.selectGenTableById(tableId);
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List<GenTableColumn> columns = table.getColumns();
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setPkColumn(table, columns);
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VelocityInitializer.initVelocity();
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VelocityContext context = VelocityUtils.prepareContext(table);
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List<String> templates = VelocityUtils.getTemplateList(table.getTplCategory());
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for (String template : templates) {
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StringWriter sw = new StringWriter();
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Template tpl = Velocity.getTemplate(template, Constants.UTF8);
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tpl.merge(context, sw);
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dataMap.put(template, sw.toString());
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}
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return dataMap;
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}
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@Override
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public byte[] generatorCode(String tableName) {
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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ZipOutputStream zip = new ZipOutputStream(outputStream);
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generatorCode(tableName, zip);
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IOUtils.closeQuietly(zip);
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return outputStream.toByteArray();
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}
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@Override
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public byte[] generatorCode(String[] tableNames) {
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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ZipOutputStream zip = new ZipOutputStream(outputStream);
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for (String tableName : tableNames) {
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generatorCode(tableName, zip);
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}
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IOUtils.closeQuietly(zip);
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return outputStream.toByteArray();
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}
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private void generatorCode(String tableName, ZipOutputStream zip) {
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GenTable table = genTableMapper.selectGenTableByName(tableName);
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List<GenTableColumn> columns = table.getColumns();
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setPkColumn(table, columns);
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VelocityInitializer.initVelocity();
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VelocityContext context = VelocityUtils.prepareContext(table);
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List<String> templates = VelocityUtils.getTemplateList(table.getTplCategory());
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for (String template : templates) {
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StringWriter sw = new StringWriter();
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Template tpl = Velocity.getTemplate(template, Constants.UTF8);
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tpl.merge(context, sw);
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try {
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zip.putNextEntry(new ZipEntry(VelocityUtils.getFileName(template, table)));
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IOUtils.write(sw.toString(), zip, Constants.UTF8);
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IOUtils.closeQuietly(sw);
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zip.closeEntry();
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} catch (IOException e) {
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log.error("渲染模板失败，表名：" + table.getTableName(), e);
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}
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}
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}
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public void validateEdit(GenTable genTable) {
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if (GenConstants.TPL_TREE.equals(genTable.getTplCategory())) {
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String options = JSON.toJSONString(genTable.getParams());
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JSONObject paramsObj = JSONObject.parseObject(options);
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if (StringUtils.isEmpty(paramsObj.getString(GenConstants.TREE_CODE))) {
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throw new BusinessException("树编码字段不能为空");
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} else if (StringUtils.isEmpty(paramsObj.getString(GenConstants.TREE_PARENT_CODE))) {
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throw new BusinessException("树父编码字段不能为空");
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} else if (StringUtils.isEmpty(paramsObj.getString(GenConstants.TREE_NAME))) {
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throw new BusinessException("树名称字段不能为空");
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}
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}
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}
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public void setPkColumn(GenTable table, List<GenTableColumn> columns) {
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for (GenTableColumn column : columns) {
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if (column.isPk()) {
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table.setPkColumn(column);
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break;
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}
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}
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}
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public void setTableFromOptions(GenTable genTable) {
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JSONObject paramsObj = JSONObject.parseObject(genTable.getOptions());
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if (StringUtils.isNotNull(paramsObj)) {
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String treeCode = paramsObj.getString(GenConstants.TREE_CODE);
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String treeParentCode = paramsObj.getString(GenConstants.TREE_PARENT_CODE);
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String treeName = paramsObj.getString(GenConstants.TREE_NAME);
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genTable.setTreeCode(treeCode);
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genTable.setTreeParentCode(treeParentCode);
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genTable.setTreeName(treeName);
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}
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}
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}
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