package com.ruoyi.common.handler;

import org.apache.ibatis.type.BaseTypeHandler;
import org.apache.ibatis.type.JdbcType;
import org.apache.ibatis.type.MappedTypes;

import java.sql.*;
import java.time.LocalDateTime;

@MappedTypes(LocalDateTime.class)
public class LocalDateTimeTypeHandler extends BaseTypeHandler<LocalDateTime> {

    @Override
    public void setNonNullParameter(PreparedStatement ps, int i,
                                    LocalDateTime parameter, JdbcType jdbcType) throws SQLException {
        ps.setObject(i, parameter);
    }

    @Override
    public LocalDateTime getNullableResult(ResultSet rs, String columnName) throws SQLException {
        Object value = rs.getObject(columnName);
        if (value == null) {
            return null;
        }

        if (value instanceof Timestamp) {
            return ((Timestamp) value).toLocalDateTime();
        } else if (value instanceof LocalDateTime) {
            return (LocalDateTime) value;
        }

        // 特殊处理：如果数据库返回的是字符串
        return LocalDateTime.parse(value.toString());
    }

    @Override
    public LocalDateTime getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
        Object value = rs.getObject(columnIndex);
        if (value == null) {
            return null;
        }

        if (value instanceof Timestamp) {
            return ((Timestamp) value).toLocalDateTime();
        } else if (value instanceof LocalDateTime) {
            return (LocalDateTime) value;
        }

        return LocalDateTime.parse(value.toString());
    }

    @Override
    public LocalDateTime getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
        Object value = cs.getObject(columnIndex);
        if (value == null) {
            return null;
        }

        if (value instanceof Timestamp) {
            return ((Timestamp) value).toLocalDateTime();
        } else if (value instanceof LocalDateTime) {
            return (LocalDateTime) value;
        }

        return LocalDateTime.parse(value.toString());
    }
}