content: /*
   * Copyright (c) 2020 Adam Gaj
   *
   * Licensed 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
   *
   *     https://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 com.adgadev.jplusone.core.registry;
  
  import lombok.AccessLevel;
  import lombok.Getter;
  import lombok.RequiredArgsConstructor;
  
  import java.util.Arrays;
  
  @RequiredArgsConstructor(access = AccessLevel.PRIVATE)
  public enum StatementType {
      SELECT("select", StatementGroupType.READ),
      INSERT("insert", StatementGroupType.WRITE),
      UPDATE("update", StatementGroupType.WRITE),
      DELETE("delete", StatementGroupType.WRITE),
      OTHER(null, StatementGroupType.OTHER);
  
      public enum StatementGroupType {READ, WRITE, OTHER}
  
      private static final int MAX_CLAUSE_SIZE = 6;
  
      private final String clause;
  
      @Getter
      private final StatementGroupType statementGroupType;
  
      static StatementType resolveStatementType(String sql) {
          int endIndex = Math.min(MAX_CLAUSE_SIZE, sql.length());
          String sqlPrefix = sql.substring(0, endIndex);
  
          return Arrays.stream(values())
                  .filter(statementType -> statementType != OTHER)
                  .filter(statementType -> sqlPrefix.startsWith(statementType.clause))
                  .findFirst()
                  .orElse(StatementType.OTHER);
      }
  
  }
  