package com.glxp.api.config;

import com.baomidou.mybatisplus.core.enums.SqlMethod;
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.metadata.TableInfoHelper;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.core.toolkit.sql.SqlScriptUtils;
import lombok.Setter;
import lombok.experimental.Accessors;
import org.apache.ibatis.executor.keygen.KeyGenerator;
import org.apache.ibatis.executor.keygen.NoKeyGenerator;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.SqlSource;

import java.util.List;
import java.util.function.Predicate;

/**
 * 替换数据实现类
 * 替换数据，如果中已经存在相同的记录，则覆盖旧数据
 */
public class ReplaceBatch extends AbstractMethod {
    /**
     * mapper 对应的方法名
     */
    private static final String MAPPER_METHOD = "replaceBatch";

    /**
     * 字段筛选条件
     */
    @Setter
    @Accessors(chain = true)
    private Predicate<TableFieldInfo> predicate;

    @Override
    public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?> modelClass, TableInfo tableInfo) {
        KeyGenerator keyGenerator = new NoKeyGenerator();
        CustomerSqlMethod sqlMethod = CustomerSqlMethod.REPLACE_ONE;
        List<TableFieldInfo> fieldList = tableInfo.getFieldList();

//        String columnScript = SqlScriptUtils.convertTrim(tableInfo.getAllInsertSqlColumnMaybeIf(null),
//                LEFT_BRACKET, RIGHT_BRACKET, null, COMMA);
        String insertSqlColumn = tableInfo.getKeyInsertSqlColumn(true, true) +
                this.filterTableFieldInfo(fieldList, predicate, TableFieldInfo::getInsertSqlColumn, EMPTY);
        String columnScript = LEFT_BRACKET + insertSqlColumn.substring(0, insertSqlColumn.length() - 1) + RIGHT_BRACKET;
        String insertSqlProperty = tableInfo.getKeyInsertSqlProperty(true, ENTITY_DOT, true) +
                this.filterTableFieldInfo(fieldList, predicate, i -> i.getInsertSqlProperty(ENTITY_DOT), EMPTY);
        insertSqlProperty = LEFT_BRACKET + insertSqlProperty.substring(0, insertSqlProperty.length() - 1) + RIGHT_BRACKET;
        String valuesScript = SqlScriptUtils.convertForeach(insertSqlProperty, "list", null, ENTITY, COMMA);
        String keyProperty = null;
        String keyColumn = null;
        // 表包含主键处理逻辑,如果不包含主键当普通字段处理
        if (StringUtils.isNotBlank(tableInfo.getKeyProperty())) {
            if (null != tableInfo.getKeySequence()) {
                keyGenerator = TableInfoHelper.genKeyGenerator(sqlMethod.getMethod(), tableInfo, builderAssistant);
                keyProperty = tableInfo.getKeyProperty();
                keyColumn = tableInfo.getKeyColumn();
            }
        }
        String sql = String.format(sqlMethod.getSql(), tableInfo.getTableName(), columnScript, valuesScript);
        SqlSource sqlSource = languageDriver.createSqlSource(configuration, sql, modelClass);
        return this.addInsertMappedStatement(mapperClass, modelClass, MAPPER_METHOD, sqlSource, keyGenerator, keyProperty, keyColumn);
    }

    @Override
    public String getMethod(SqlMethod sqlMethod) {
        // 自定义 mapper 方法名
        return MAPPER_METHOD;
    }
}