/*
 * ToroDB
 * Copyright © 2014 8Kdata Technology (www.8kdata.com)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

package com.torodb.core.transaction.metainf;

import com.torodb.kvdocument.types.ArrayType;
import com.torodb.kvdocument.types.BinaryType;
import com.torodb.kvdocument.types.BooleanType;
import com.torodb.kvdocument.types.DateType;
import com.torodb.kvdocument.types.DocumentType;
import com.torodb.kvdocument.types.DoubleType;
import com.torodb.kvdocument.types.GenericType;
import com.torodb.kvdocument.types.InstantType;
import com.torodb.kvdocument.types.IntegerType;
import com.torodb.kvdocument.types.KvType;
import com.torodb.kvdocument.types.KvTypeVisitor;
import com.torodb.kvdocument.types.LongType;
import com.torodb.kvdocument.types.MongoObjectIdType;
import com.torodb.kvdocument.types.MongoTimestampType;
import com.torodb.kvdocument.types.NonExistentType;
import com.torodb.kvdocument.types.NullType;
import com.torodb.kvdocument.types.StringType;
import com.torodb.kvdocument.types.TimeType;

/**
 *
 */
public enum FieldType {
  BINARY,
  BOOLEAN,
  DATE,
  DOUBLE,
  INSTANT,
  INTEGER,
  LONG,
  MONGO_OBJECT_ID,
  MONGO_TIME_STAMP,
  NULL,
  STRING,
  TIME,
  CHILD;

  private static final FromKvTypeVisitor FROM_KVTYPE_VISITOR = new FromKvTypeVisitor();

  public static FieldType from(KvType type) {
    return type.accept(FROM_KVTYPE_VISITOR, null);
  }

  private static class FromKvTypeVisitor implements KvTypeVisitor<FieldType, Void> {

    @Override
    public FieldType visit(ArrayType type, Void arg) {
      return CHILD;
    }

    @Override
    public FieldType visit(BooleanType type, Void arg) {
      return BOOLEAN;
    }

    @Override
    public FieldType visit(DoubleType type, Void arg) {
      return DOUBLE;
    }

    @Override
    public FieldType visit(IntegerType type, Void arg) {
      return INTEGER;
    }

    @Override
    public FieldType visit(LongType type, Void arg) {
      return LONG;
    }

    @Override
    public FieldType visit(NullType type, Void arg) {
      return NULL;
    }

    @Override
    public FieldType visit(DocumentType type, Void arg) {
      return CHILD;
    }

    @Override
    public FieldType visit(StringType type, Void arg) {
      return STRING;
    }

    @Override
    public FieldType visit(GenericType type, Void arg) {
      throw new IllegalArgumentException("There is no " + FieldType.class.getSimpleName()
          + " that represents a " + GenericType.class.getSimpleName());
    }

    @Override
    public FieldType visit(MongoObjectIdType type, Void arg) {
      return MONGO_OBJECT_ID;
    }

    @Override
    public FieldType visit(InstantType type, Void arg) {
      return INSTANT;
    }

    @Override
    public FieldType visit(DateType type, Void arg) {
      return DATE;
    }

    @Override
    public FieldType visit(TimeType type, Void arg) {
      return TIME;
    }

    @Override
    public FieldType visit(BinaryType type, Void arg) {
      return BINARY;
    }

    @Override
    public FieldType visit(NonExistentType type, Void arg) {
      throw new IllegalArgumentException("There is no " + FieldType.class.getSimpleName()
          + " that represents a " + NonExistentType.class.getSimpleName());
    }

    @Override
    public FieldType visit(MongoTimestampType type, Void arg) {
      return MONGO_TIME_STAMP;
    }

  }
}