package com.terra.coal.extend;

import com.baomidou.mybatisplus.core.injector.AbstractMethod;
import com.baomidou.mybatisplus.core.metadata.TableFieldInfo;
import com.baomidou.mybatisplus.core.metadata.TableInfo;
import com.baomidou.mybatisplus.core.toolkit.sql.SqlScriptUtils;
import com.terra.coal.entity.StaticData;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.SqlSource;

/**
 * UpdateBatchMethod
 * @author WWW
 */
@SuppressWarnings("ALL")
public class UpdateBatchMethod extends AbstractMethod {
    @Override
    public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?> modelClass, TableInfo tableInfo) {
        String sql = "<script>\n<foreach collection=\"list\" item=\"item\" separator=\";\">\nupdate %s %s where %s=#{%s} %s\n</foreach>\n</script>";
        String additional = tableInfo.isWithVersion() ? tableInfo.getVersionFieldInfo().getVersionOli("item", "item.") : "" + tableInfo.getLogicDeleteSql(true, true);
        //String setSql = sqlSet(tableInfo.isWithLogicDelete(), false, tableInfo, false, "item", "item.");
        String setSql = getSqlSet(tableInfo.isWithLogicDelete(), false, tableInfo, false, "item", "item.");
        String sqlResult = String.format(sql, tableInfo.getTableName(), setSql, tableInfo.getKeyColumn(), "item." + tableInfo.getKeyProperty(), additional);

        // update %s %s where %s=#{%s} %s
        // update tab set a=#{a} where gid=1

        SqlSource sqlSource = languageDriver.createSqlSource(configuration, sqlResult, modelClass);

        return this.addUpdateMappedStatement(mapperClass, modelClass, "updateBatch", sqlSource);
    }

    private String getSqlSet(boolean logic, boolean ew, TableInfo table, boolean judgeAliasNull, final String alias, final String prefix) {
        // String sqlScript = table.getAllSqlSet(logic, prefix);
        String sqlScript = getSqlSet(table);
        if (judgeAliasNull) {
            sqlScript = SqlScriptUtils.convertIf(sqlScript, String.format("%s != null", alias), true);
        }
        if (ew) {
            sqlScript = sqlScript + "\n";
            sqlScript = sqlScript + this.convertIfEwParam("ew.sqlSet", false);
        }

        sqlScript = SqlScriptUtils.convertSet(sqlScript);

        return sqlScript;
    }

    private String getSqlSet(TableInfo tableInfo) {
        StringBuilder sb = new StringBuilder();
        for (TableFieldInfo f : tableInfo.getFieldList()) {
            if (StaticData.UPDATE_EXCLUDE_FIELDS.contains(f.getProperty())) {
                continue;
            }
            if ("geom".equals(f.getProperty())) {
                sb.append("<if test=\"item['geom'] != null\">geom=${item.geom},</if>\n");
                continue;
            }

            sb.append(String.format("<if test=\"item['%s'] != null\">%s=#{item.%s},</if>\n", f.getProperty(), f.getColumn(), f.getProperty()));
        }
        sb.deleteCharAt(sb.length() - 1);

        return sb.toString();
    }
}