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/**
 * 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
 *
 * 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.
 *
 * Copyright 2012-2015 the original author or authors.
 */
package org.assertj.db.api;

import org.assertj.db.api.assertions.AssertOnNumberOfColumns;
import org.assertj.db.api.assertions.AssertOnRowEquality;
import org.assertj.db.api.assertions.impl.AssertionsOnNumberOfColumns;
import org.assertj.db.api.assertions.impl.AssertionsOnRowEquality;
import org.assertj.db.api.navigation.RowAssert;
import org.assertj.db.api.navigation.ToValueFromRow;
import org.assertj.db.exception.AssertJDBException;
import org.assertj.db.type.AbstractDbData;
import org.assertj.db.type.Row;

import java.lang.reflect.Constructor;
import java.util.List;

/**
 * Base class for all {@link Row}s assertions.
 *
 * @author Régis Pouiller
 * 
 * @param  The class of the actual value (an sub-class of {@link AbstractDbData}).
 * @param  The class of the original assertion (an sub-class of {@link AbstractDbAssert}).
 * @param  The class of the equivalent column assertion (an sub-class of {@link AbstractColumnAssert}).
 * @param  The class of the equivalent column assertion on the value (an sub-class of {@link AbstractColumnValueAssert}
 *          ).
 * @param  The class of this assertion (an sub-class of {@link AbstractRowAssert}).
 * @param  The class of this assertion on the value (an sub-class of {@link AbstractRowValueAssert}).
 */
public abstract class AbstractRowAssert, A extends AbstractDbAssert, C extends AbstractColumnAssert, CV extends AbstractColumnValueAssert, R extends AbstractRowAssert, RV extends AbstractRowValueAssert>
        extends AbstractSubAssert
        implements RowAssert,
                   ToValueFromRow,
                   AssertOnRowEquality,
                   AssertOnNumberOfColumns {

  /**
   * Row on which do the assertion.
   */
  private final Row row;

  /**
   * Constructor.
   * 
   * @param originalDbAssert The original assert. That could be a {@link RequestAssert} or a {@link TableAssert}.
   * @param selfType Type of this assertion class : a sub-class of {@code AbstractRowAssert}.
   * @param valueType Class of the assert on the value : a sub-class of {@code AbstractRowValueAssert}.
   */
  AbstractRowAssert(A originalDbAssert, Class selfType, Class valueType, Row row) {
    super(originalDbAssert, selfType, valueType);
    this.row = row;
  }

  /** {@inheritDoc} */
  @Override
  protected RV getValueAssertInstance(Class valueAssertType, int index, Object value) throws Exception {
    List columnsNameList = row.getColumnsNameList();
    String columnName = columnsNameList.get(index);
    Constructor constructor = valueAssertType.getDeclaredConstructor(myself.getClass(), String.class, Object.class);
    RV instance = constructor.newInstance(this, columnName, value);
    return instance.as("Value at index " + index + " (column name : " + columnName + ") of " + info.descriptionText());
  }

  /** {@inheritDoc} */
  @Override
  protected List getValuesList() {
    return row.getValuesList();
  }

  /** {@inheritDoc} */
  @Override
  public RV value(String columnName) {
    if (columnName == null) {
      throw new NullPointerException("Column name must be not null");
    }
    List columnsNameList = row.getColumnsNameList();
    int index = columnsNameList.indexOf(columnName.toUpperCase());
    if (index == -1) {
      throw new AssertJDBException("Column <%s> does not exist", columnName);
    }
    return getValueAssertInstance(index);
  }

  /** {@inheritDoc} */
  @Override
  public R hasNumberOfColumns(int expected) {
    return AssertionsOnNumberOfColumns.hasNumberOfColumns(myself, info, getValuesList().size(), expected);
  }

  /** {@inheritDoc} */
  @Override
  public R hasValuesEqualTo(Object... expected) {
    return AssertionsOnRowEquality.hasValuesEqualTo(myself, info, getValuesList(), expected);
  }
}