/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.kylin.junit;

import static org.apache.kylin.common.persistence.metadata.jdbc.JdbcUtil.datasourceParameters;
import static org.apache.kylin.common.util.TestUtils.getTestConfig;

import java.lang.reflect.Method;

import org.apache.commons.dbcp2.BasicDataSourceFactory;
import org.junit.jupiter.api.extension.AfterEachCallback;
import org.junit.jupiter.api.extension.BeforeEachCallback;
import org.junit.jupiter.api.extension.ExtensionContext;
import org.junit.jupiter.api.extension.ParameterContext;
import org.junit.jupiter.api.extension.ParameterResolutionException;
import org.junit.jupiter.api.extension.ParameterResolver;
import org.springframework.jdbc.core.JdbcTemplate;

import lombok.SneakyThrows;
import lombok.val;

public class JdbcMetadataExtension implements BeforeEachCallback, AfterEachCallback, ParameterResolver {

    @Override
    public void beforeEach(ExtensionContext context) throws Exception {
        getTestConfig().setMetadataUrl(getTableName(context)
                + "@jdbc,driverClassName=org.h2.Driver,url=jdbc:h2:mem:db_default;DB_CLOSE_DELAY=-1;MODE=MySQL,username=sa,password=");
    }

    @Override
    public void afterEach(ExtensionContext context) throws Exception {
        val jdbcTemplate = getJdbcTemplate();
        jdbcTemplate.batchUpdate("DROP ALL OBJECTS");
    }

    @Override
    public boolean supportsParameter(ParameterContext parameterContext, ExtensionContext extensionContext)
            throws ParameterResolutionException {
        return parameterContext.getParameter().getType() == JdbcInfo.class;
    }

    @SneakyThrows
    @Override
    public Object resolveParameter(ParameterContext parameterContext, ExtensionContext extensionContext)
            throws ParameterResolutionException {
        val result = new JdbcInfo();
        result.setJdbcTemplate(getJdbcTemplate());
        result.setTableName(getTableName(extensionContext));
        return result;
    }

    private String getTableName(ExtensionContext context) {
        return "test_" + context.getTestMethod().map(Method::getName).orElse("") + "_"
                + context.getDisplayName().replaceAll("[|]|\\W", "_");
    }

    private JdbcTemplate getJdbcTemplate() throws Exception {
        val url = getTestConfig().getMetadataUrl();
        val props = datasourceParameters(url);
        val dataSource = BasicDataSourceFactory.createDataSource(props);
        return new JdbcTemplate(dataSource);
    }

}
