package com.ruoyi.generator.service; 
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import java.io.ByteArrayOutputStream; 
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import java.io.File; 
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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.function.Function; 
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import java.util.stream.Collectors; 
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import java.util.zip.ZipEntry; 
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import java.util.zip.ZipOutputStream; 
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import org.apache.commons.io.FileUtils; 
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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 com.alibaba.fastjson2.JSON; 
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import com.alibaba.fastjson2.JSONObject; 
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import com.ruoyi.common.constant.Constants; 
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import com.ruoyi.common.constant.GenConstants; 
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import com.ruoyi.common.core.text.CharsetKit; 
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import com.ruoyi.common.exception.ServiceException; 
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import com.ruoyi.common.utils.SecurityUtils; 
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import com.ruoyi.common.utils.StringUtils; 
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import com.ruoyi.generator.domain.GenTable; 
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import com.ruoyi.generator.domain.GenTableColumn; 
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import com.ruoyi.generator.mapper.GenTableColumnMapper; 
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import com.ruoyi.generator.mapper.GenTableMapper; 
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import com.ruoyi.generator.util.GenUtils; 
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import com.ruoyi.generator.util.VelocityInitializer; 
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import com.ruoyi.generator.util.VelocityUtils; 
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/** 
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 * 业务 服务层实现 
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 *  
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 * @author ruoyi 
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 */ 
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@Service 
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public class GenTableServiceImpl implements IGenTableService 
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{ 
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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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    /** 
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     * 查询业务信息 
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     *  
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     * @param id 业务ID 
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     * @return 业务信息 
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     */ 
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    @Override 
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    public GenTable selectGenTableById(Long id) 
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    { 
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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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    /** 
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     * 查询业务列表 
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     *  
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     * @param genTable 业务信息 
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     * @return 业务集合 
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     */ 
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    @Override 
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    public List<GenTable> selectGenTableList(GenTable genTable) 
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    { 
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        return genTableMapper.selectGenTableList(genTable); 
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    } 
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    /** 
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     * 查询据库列表 
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     *  
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     * @param genTable 业务信息 
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     * @return 数据库表集合 
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     */ 
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    @Override 
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    public List<GenTable> selectDbTableList(GenTable genTable) 
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    { 
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        return genTableMapper.selectDbTableList(genTable); 
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    } 
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    /** 
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     * 查询据库列表 
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     *  
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     * @param tableNames 表名称组 
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     * @return 数据库表集合 
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     */ 
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    @Override 
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    public List<GenTable> selectDbTableListByNames(String[] tableNames) 
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    { 
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        return genTableMapper.selectDbTableListByNames(tableNames); 
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    } 
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    /** 
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     * 查询所有表信息 
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     *  
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     * @return 表信息集合 
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     */ 
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    @Override 
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    public List<GenTable> selectGenTableAll() 
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    { 
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        return genTableMapper.selectGenTableAll(); 
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    } 
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    /** 
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     * 修改业务 
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     *  
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     * @param genTable 业务信息 
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     * @return 结果 
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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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    { 
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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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        { 
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            for (GenTableColumn cenTableColumn : genTable.getColumns()) 
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            { 
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                genTableColumnMapper.updateGenTableColumn(cenTableColumn); 
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            } 
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        } 
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    } 
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    /** 
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     * 删除业务对象 
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     *  
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     * @param tableIds 需要删除的数据ID 
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     * @return 结果 
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     */ 
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    @Override 
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    @Transactional 
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    public void deleteGenTableByIds(Long[] tableIds) 
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    { 
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        genTableMapper.deleteGenTableByIds(tableIds); 
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        genTableColumnMapper.deleteGenTableColumnByIds(tableIds); 
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    } 
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    /** 
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     * 导入表结构 
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     *  
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     * @param tableList 导入表列表 
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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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    { 
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        String operName = SecurityUtils.getUsername(); 
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        try 
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        { 
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            for (GenTable table : tableList) 
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            { 
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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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                { 
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                    // 保存列信息 
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                    List<GenTableColumn> genTableColumns = genTableColumnMapper.selectDbTableColumnsByName(tableName); 
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                    for (GenTableColumn column : genTableColumns) 
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                    { 
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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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            } 
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        } 
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        catch (Exception e) 
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        { 
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            throw new ServiceException("导入失败:" + e.getMessage()); 
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        } 
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    } 
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    /** 
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     * 预览代码 
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     *  
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     * @param tableId 表编号 
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     * @return 预览数据列表 
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     */ 
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    @Override 
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    public Map<String, String> previewCode(Long tableId) 
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    { 
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        Map<String, String> dataMap = new LinkedHashMap<>(); 
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        // 查询表信息 
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        GenTable table = genTableMapper.selectGenTableById(tableId); 
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        // 设置主子表信息 
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        setSubTable(table); 
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        // 设置主键列信息 
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        setPkColumn(table); 
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        VelocityInitializer.initVelocity(); 
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        VelocityContext context = VelocityUtils.prepareContext(table); 
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        // 获取模板列表 
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        List<String> templates = VelocityUtils.getTemplateList(table.getTplCategory()); 
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        for (String template : templates) 
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        { 
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            // 渲染模板 
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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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    /** 
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     * 生成代码(下载方式) 
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     *  
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     * @param tableName 表名称 
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     * @return 数据 
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     */ 
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    @Override 
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    public byte[] downloadCode(String tableName) 
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    { 
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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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    /** 
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     * 生成代码(自定义路径) 
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     *  
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     * @param tableName 表名称 
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     */ 
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    @Override 
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    public void generatorCode(String tableName) 
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    { 
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        // 查询表信息 
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        GenTable table = genTableMapper.selectGenTableByName(tableName); 
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        // 设置主子表信息 
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        setSubTable(table); 
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        // 设置主键列信息 
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        setPkColumn(table); 
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        VelocityInitializer.initVelocity(); 
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        VelocityContext context = VelocityUtils.prepareContext(table); 
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        // 获取模板列表 
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        List<String> templates = VelocityUtils.getTemplateList(table.getTplCategory()); 
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        for (String template : templates) 
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        { 
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            if (!StringUtils.containsAny(template, "sql.vm", "api.js.vm", "index.vue.vm", "index-tree.vue.vm")) 
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            { 
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                // 渲染模板 
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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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                { 
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                    String path = getGenPath(table, template); 
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                    FileUtils.writeStringToFile(new File(path), sw.toString(), CharsetKit.UTF_8); 
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                } 
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                catch (IOException e) 
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                { 
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                    throw new ServiceException("渲染模板失败,表名:" + table.getTableName()); 
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                } 
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            } 
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        } 
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    } 
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    /** 
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     * 同步数据库 
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     *  
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     * @param tableName 表名称 
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     */ 
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    @Override 
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    @Transactional 
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    public void synchDb(String tableName) 
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    { 
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        GenTable table = genTableMapper.selectGenTableByName(tableName); 
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        List<GenTableColumn> tableColumns = table.getColumns(); 
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        Map<String, GenTableColumn> tableColumnMap = tableColumns.stream().collect(Collectors.toMap(GenTableColumn::getColumnName, Function.identity())); 
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        List<GenTableColumn> dbTableColumns = genTableColumnMapper.selectDbTableColumnsByName(tableName); 
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        if (StringUtils.isEmpty(dbTableColumns)) 
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        { 
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            throw new ServiceException("同步数据失败,原表结构不存在"); 
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        } 
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        List<String> dbTableColumnNames = dbTableColumns.stream().map(GenTableColumn::getColumnName).collect(Collectors.toList()); 
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        dbTableColumns.forEach(column -> { 
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            GenUtils.initColumnField(column, table); 
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            if (tableColumnMap.containsKey(column.getColumnName())) 
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            { 
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                GenTableColumn prevColumn = tableColumnMap.get(column.getColumnName()); 
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                column.setColumnId(prevColumn.getColumnId()); 
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                if (column.isList()) 
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                { 
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                    // 如果是列表,继续保留查询方式/字典类型选项 
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                    column.setDictType(prevColumn.getDictType()); 
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                    column.setQueryType(prevColumn.getQueryType()); 
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                } 
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                if (StringUtils.isNotEmpty(prevColumn.getIsRequired()) && !column.isPk() 
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                        && (column.isInsert() || column.isEdit()) 
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                        && ((column.isUsableColumn()) || (!column.isSuperColumn()))) 
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                { 
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                    // 如果是(新增/修改&非主键/非忽略及父属性),继续保留必填/显示类型选项 
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                    column.setIsRequired(prevColumn.getIsRequired()); 
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                    column.setHtmlType(prevColumn.getHtmlType()); 
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                } 
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                genTableColumnMapper.updateGenTableColumn(column); 
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            } 
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            else 
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            { 
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                genTableColumnMapper.insertGenTableColumn(column); 
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            } 
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        }); 
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        List<GenTableColumn> delColumns = tableColumns.stream().filter(column -> !dbTableColumnNames.contains(column.getColumnName())).collect(Collectors.toList()); 
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        if (StringUtils.isNotEmpty(delColumns)) 
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        { 
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            genTableColumnMapper.deleteGenTableColumns(delColumns); 
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        } 
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    } 
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    /** 
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     * 批量生成代码(下载方式) 
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     *  
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     * @param tableNames 表数组 
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     * @return 数据 
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     */ 
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    @Override 
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    public byte[] downloadCode(String[] tableNames) 
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    { 
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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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        { 
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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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    /** 
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     * 查询表信息并生成代码 
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     */ 
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    private void generatorCode(String tableName, ZipOutputStream zip) 
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    { 
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        // 查询表信息 
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        GenTable table = genTableMapper.selectGenTableByName(tableName); 
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        // 设置主子表信息 
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        setSubTable(table); 
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        // 设置主键列信息 
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        setPkColumn(table); 
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        VelocityInitializer.initVelocity(); 
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        VelocityContext context = VelocityUtils.prepareContext(table); 
 | 
  
 | 
        // 获取模板列表 
 | 
        List<String> templates = VelocityUtils.getTemplateList(table.getTplCategory()); 
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        for (String template : templates) 
 | 
        { 
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            // 渲染模板 
 | 
            StringWriter sw = new StringWriter(); 
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            Template tpl = Velocity.getTemplate(template, Constants.UTF8); 
 | 
            tpl.merge(context, sw); 
 | 
            try 
 | 
            { 
 | 
                // 添加到zip 
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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.flush(); 
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                zip.closeEntry(); 
 | 
            } 
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            catch (IOException e) 
 | 
            { 
 | 
                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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     * 修改保存参数校验 
 | 
     *  
 | 
     * @param genTable 业务信息 
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     */ 
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    @Override 
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    public void validateEdit(GenTable genTable) 
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    { 
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        if (GenConstants.TPL_TREE.equals(genTable.getTplCategory())) 
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        { 
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            String options = JSON.toJSONString(genTable.getParams()); 
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            JSONObject paramsObj = JSON.parseObject(options); 
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            if (StringUtils.isEmpty(paramsObj.getString(GenConstants.TREE_CODE))) 
 | 
            { 
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                throw new ServiceException("树编码字段不能为空"); 
 | 
            } 
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            else if (StringUtils.isEmpty(paramsObj.getString(GenConstants.TREE_PARENT_CODE))) 
 | 
            { 
 | 
                throw new ServiceException("树父编码字段不能为空"); 
 | 
            } 
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            else if (StringUtils.isEmpty(paramsObj.getString(GenConstants.TREE_NAME))) 
 | 
            { 
 | 
                throw new ServiceException("树名称字段不能为空"); 
 | 
            } 
 | 
            else if (GenConstants.TPL_SUB.equals(genTable.getTplCategory())) 
 | 
            { 
 | 
                if (StringUtils.isEmpty(genTable.getSubTableName())) 
 | 
                { 
 | 
                    throw new ServiceException("关联子表的表名不能为空"); 
 | 
                } 
 | 
                else if (StringUtils.isEmpty(genTable.getSubTableFkName())) 
 | 
                { 
 | 
                    throw new ServiceException("子表关联的外键名不能为空"); 
 | 
                } 
 | 
            } 
 | 
        } 
 | 
    } 
 | 
  
 | 
    /** 
 | 
     * 设置主键列信息 
 | 
     *  
 | 
     * @param table 业务表信息 
 | 
     */ 
 | 
    public void setPkColumn(GenTable table) 
 | 
    { 
 | 
        for (GenTableColumn column : table.getColumns()) 
 | 
        { 
 | 
            if (column.isPk()) 
 | 
            { 
 | 
                table.setPkColumn(column); 
 | 
                break; 
 | 
            } 
 | 
        } 
 | 
        if (StringUtils.isNull(table.getPkColumn())) 
 | 
        { 
 | 
            table.setPkColumn(table.getColumns().get(0)); 
 | 
        } 
 | 
        if (GenConstants.TPL_SUB.equals(table.getTplCategory())) 
 | 
        { 
 | 
            for (GenTableColumn column : table.getSubTable().getColumns()) 
 | 
            { 
 | 
                if (column.isPk()) 
 | 
                { 
 | 
                    table.getSubTable().setPkColumn(column); 
 | 
                    break; 
 | 
                } 
 | 
            } 
 | 
            if (StringUtils.isNull(table.getSubTable().getPkColumn())) 
 | 
            { 
 | 
                table.getSubTable().setPkColumn(table.getSubTable().getColumns().get(0)); 
 | 
            } 
 | 
        } 
 | 
    } 
 | 
  
 | 
    /** 
 | 
     * 设置主子表信息 
 | 
     *  
 | 
     * @param table 业务表信息 
 | 
     */ 
 | 
    public void setSubTable(GenTable table) 
 | 
    { 
 | 
        String subTableName = table.getSubTableName(); 
 | 
        if (StringUtils.isNotEmpty(subTableName)) 
 | 
        { 
 | 
            table.setSubTable(genTableMapper.selectGenTableByName(subTableName)); 
 | 
        } 
 | 
    } 
 | 
  
 | 
    /** 
 | 
     * 设置代码生成其他选项值 
 | 
     *  
 | 
     * @param genTable 设置后的生成对象 
 | 
     */ 
 | 
    public void setTableFromOptions(GenTable genTable) 
 | 
    { 
 | 
        JSONObject paramsObj = JSON.parseObject(genTable.getOptions()); 
 | 
        if (StringUtils.isNotNull(paramsObj)) 
 | 
        { 
 | 
            String treeCode = paramsObj.getString(GenConstants.TREE_CODE); 
 | 
            String treeParentCode = paramsObj.getString(GenConstants.TREE_PARENT_CODE); 
 | 
            String treeName = paramsObj.getString(GenConstants.TREE_NAME); 
 | 
            String parentMenuId = paramsObj.getString(GenConstants.PARENT_MENU_ID); 
 | 
            String parentMenuName = paramsObj.getString(GenConstants.PARENT_MENU_NAME); 
 | 
  
 | 
            genTable.setTreeCode(treeCode); 
 | 
            genTable.setTreeParentCode(treeParentCode); 
 | 
            genTable.setTreeName(treeName); 
 | 
            genTable.setParentMenuId(parentMenuId); 
 | 
            genTable.setParentMenuName(parentMenuName); 
 | 
        } 
 | 
    } 
 | 
  
 | 
    /** 
 | 
     * 获取代码生成地址 
 | 
     *  
 | 
     * @param table 业务表信息 
 | 
     * @param template 模板文件路径 
 | 
     * @return 生成地址 
 | 
     */ 
 | 
    public static String getGenPath(GenTable table, String template) 
 | 
    { 
 | 
        String genPath = table.getGenPath(); 
 | 
        if (StringUtils.equals(genPath, "/")) 
 | 
        { 
 | 
            return System.getProperty("user.dir") + File.separator + "src" + File.separator + VelocityUtils.getFileName(template, table); 
 | 
        } 
 | 
        return genPath + File.separator + VelocityUtils.getFileName(template, table); 
 | 
    } 
 | 
} 
 |