/*
    * 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.infra.binder.segment.expression;
  
  import lombok.AccessLevel;
  import lombok.NoArgsConstructor;
  import org.apache.shardingsphere.infra.binder.enums.SegmentType;
  import org.apache.shardingsphere.infra.binder.segment.expression.impl.BinaryOperationExpressionBinder;
  import org.apache.shardingsphere.infra.binder.segment.expression.impl.ColumnSegmentBinder;
  import org.apache.shardingsphere.infra.binder.segment.expression.impl.ExistsSubqueryExpressionBinder;
  import org.apache.shardingsphere.infra.binder.segment.expression.impl.FunctionExpressionSegmentBinder;
  import org.apache.shardingsphere.infra.binder.segment.expression.impl.InExpressionBinder;
  import org.apache.shardingsphere.infra.binder.segment.expression.impl.NotExpressionBinder;
  import org.apache.shardingsphere.infra.binder.segment.expression.impl.SubqueryExpressionSegmentBinder;
  import org.apache.shardingsphere.infra.binder.segment.from.TableSegmentBinderContext;
  import org.apache.shardingsphere.infra.binder.statement.SQLStatementBinderContext;
  import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.column.ColumnSegment;
  import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.expr.BinaryOperationExpression;
  import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.expr.ExistsSubqueryExpression;
  import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.expr.ExpressionSegment;
  import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.expr.FunctionSegment;
  import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.expr.InExpression;
  import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.expr.NotExpression;
  import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.expr.subquery.SubqueryExpressionSegment;
  
  import java.util.LinkedHashMap;
  import java.util.Map;
  
  /**
   * Expression segment binder.
   */
  @NoArgsConstructor(access = AccessLevel.PRIVATE)
  public final class ExpressionSegmentBinder {
      
      /**
       * Bind expression segment with metadata.
       *
       * @param segment expression segment
       * @param parentSegmentType parent segment type
       * @param statementBinderContext statement binder context
       * @param tableBinderContexts table binder contexts
       * @param outerTableBinderContexts outer table binder contexts
       * @return bounded expression segment
       */
      public static ExpressionSegment bind(final ExpressionSegment segment, final SegmentType parentSegmentType, final SQLStatementBinderContext statementBinderContext,
                                           final Map<String, TableSegmentBinderContext> tableBinderContexts, final Map<String, TableSegmentBinderContext> outerTableBinderContexts) {
          if (segment instanceof BinaryOperationExpression) {
              return BinaryOperationExpressionBinder.bind((BinaryOperationExpression) segment, parentSegmentType, statementBinderContext, tableBinderContexts, outerTableBinderContexts);
          }
          if (segment instanceof ExistsSubqueryExpression) {
              return ExistsSubqueryExpressionBinder.bind((ExistsSubqueryExpression) segment, statementBinderContext, tableBinderContexts);
          }
          if (segment instanceof SubqueryExpressionSegment) {
              Map<String, TableSegmentBinderContext> newOuterTableBinderContexts = new LinkedHashMap<>();
              newOuterTableBinderContexts.putAll(outerTableBinderContexts);
              newOuterTableBinderContexts.putAll(tableBinderContexts);
              return SubqueryExpressionSegmentBinder.bind((SubqueryExpressionSegment) segment, statementBinderContext, newOuterTableBinderContexts);
          }
          if (segment instanceof InExpression) {
              return InExpressionBinder.bind((InExpression) segment, parentSegmentType, statementBinderContext, tableBinderContexts, outerTableBinderContexts);
          }
          if (segment instanceof NotExpression) {
              return NotExpressionBinder.bind((NotExpression) segment, parentSegmentType, statementBinderContext, tableBinderContexts);
          }
          if (segment instanceof ColumnSegment) {
              return ColumnSegmentBinder.bind((ColumnSegment) segment, parentSegmentType, statementBinderContext, tableBinderContexts, outerTableBinderContexts);
          }
          if (segment instanceof FunctionSegment) {
              return FunctionExpressionSegmentBinder.bind((FunctionSegment) segment, parentSegmentType, statementBinderContext, tableBinderContexts, outerTableBinderContexts);
          }
          // TODO support more ExpressionSegment bind
          return segment;
      }
  }