/*
    * 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.shardingsphere.test.it.sql.parser.internal.asserts.statement.rdl.alter.impl;
  
  import lombok.AccessLevel;
  import lombok.NoArgsConstructor;
  import org.apache.shardingsphere.sharding.distsql.segment.table.AutoTableRuleSegment;
  import org.apache.shardingsphere.sharding.distsql.segment.table.TableRuleSegment;
  import org.apache.shardingsphere.sharding.distsql.statement.AlterShardingTableRuleStatement;
  import org.apache.shardingsphere.test.it.sql.parser.internal.asserts.SQLCaseAssertContext;
  import org.apache.shardingsphere.test.it.sql.parser.internal.asserts.segment.distsql.AutoTableRuleAssert;
  import org.apache.shardingsphere.test.it.sql.parser.internal.asserts.segment.distsql.TableRuleAssert;
  import org.apache.shardingsphere.test.it.sql.parser.internal.asserts.statement.ExistingAssert;
  import org.apache.shardingsphere.test.it.sql.parser.internal.cases.parser.jaxb.segment.impl.distsql.ExpectedAutoTableRule;
  import org.apache.shardingsphere.test.it.sql.parser.internal.cases.parser.jaxb.segment.impl.distsql.ExpectedTableRule;
  import org.apache.shardingsphere.test.it.sql.parser.internal.cases.parser.jaxb.SQLParserTestCase;
  import org.apache.shardingsphere.test.it.sql.parser.internal.cases.parser.jaxb.statement.rdl.rule.sharding.AlterShardingAutoTableRuleStatementTestCase;
  import org.apache.shardingsphere.test.it.sql.parser.internal.cases.parser.jaxb.statement.rdl.rule.sharding.AlterShardingTableRuleStatementTestCase;
  
  import java.util.Collection;
  import java.util.List;
  import java.util.stream.Collectors;
  
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  
  /**
   * Alter sharding table rule statement assert.
   */
  @NoArgsConstructor(access = AccessLevel.PRIVATE)
  public final class AlterShardingTableRuleStatementAssert {
      
      /**
       * Assert alter sharding table rule statement is correct with expected parser result.
       *
       * @param assertContext assert context
       * @param actual actual alter sharding table rule statement
       * @param expected expected alter sharding table rule statement test case
       */
      public static void assertIs(final SQLCaseAssertContext assertContext, final AlterShardingTableRuleStatement actual, final SQLParserTestCase expected) {
          if (ExistingAssert.assertIs(assertContext, actual, expected)) {
              if (expected instanceof AlterShardingAutoTableRuleStatementTestCase) {
                  AlterShardingAutoTableRuleStatementTestCase autoTableRuleStatementTestCase = (AlterShardingAutoTableRuleStatementTestCase) expected;
                  Collection<AutoTableRuleSegment> actualAutoTableRules = actual.getRules().stream().map(AutoTableRuleSegment.class::cast).collect(Collectors.toList());
                  assertShardingAutoTableRules(assertContext, actualAutoTableRules, autoTableRuleStatementTestCase.getRules());
              } else {
                  AlterShardingTableRuleStatementTestCase tableRuleStatementTestCase = (AlterShardingTableRuleStatementTestCase) expected;
                  Collection<TableRuleSegment> actualTableRules = actual.getRules().stream().map(TableRuleSegment.class::cast).collect(Collectors.toList());
                  assertShardingTableRules(assertContext, actualTableRules, tableRuleStatementTestCase.getRules());
              }
          }
      }
      
      private static void assertShardingAutoTableRules(final SQLCaseAssertContext assertContext, final Collection<AutoTableRuleSegment> actual, final List<ExpectedAutoTableRule> expected) {
          if (null == expected) {
              assertNull(actual, assertContext.getText("Actual sharding auto table rule should not exist."));
          } else {
              assertNotNull(actual, assertContext.getText("Actual sharding auto table rule should exist."));
              int count = 0;
              for (AutoTableRuleSegment each : actual) {
                  AutoTableRuleAssert.assertIs(assertContext, each, expected.get(count));
                  count++;
              }
          }
      }
      
      private static void assertShardingTableRules(final SQLCaseAssertContext assertContext, final Collection<TableRuleSegment> actual, final List<ExpectedTableRule> expected) {
          if (null == expected) {
              assertNull(actual, assertContext.getText("Actual sharding table rule should not exist."));
          } else {
              assertNotNull(actual, assertContext.getText("Actual sharding table rule should exist."));
              int count = 0;
              for (TableRuleSegment each : actual) {
                  TableRuleAssert.assertIs(assertContext, each, expected.get(count));
                  count++;
              }
          }
      }
  }