/*
 * Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
 * license agreements.  See the NOTICE file distributed with this work for
 * additional information regarding copyright ownership.  Crate 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.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial agreement.
 */

package io.crate.sql.tree;

import com.google.common.base.MoreObjects;
import com.google.common.base.Objects;

import java.util.List;

public class InsertFromValues extends Insert {

    private final List<ValuesList> valuesLists;
    private final int maxValuesLength;

    public InsertFromValues(Table table,
                            List<ValuesList> valuesLists,
                            List<String> columns,
                            List<Assignment> onDuplicateKeyAssignments) {
        super(table, columns, onDuplicateKeyAssignments);
        this.valuesLists = valuesLists;

        int i = 0;
        for (ValuesList valuesList : valuesLists) {
            i = Math.max(i, valuesList.values().size());
        }
        maxValuesLength = i;
    }

    public List<ValuesList> valuesLists() {
        return valuesLists;
    }

    /**
     * returns the length of the longest values List
     */
    public int maxValuesLength() {
        return maxValuesLength;
    }

    @Override
    public int hashCode() {
        return Objects.hashCode(super.hashCode(), valuesLists);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        if (!super.equals(o)) return false;

        InsertFromValues that = (InsertFromValues) o;

        if (!valuesLists.equals(that.valuesLists)) return false;

        return true;
    }

    @Override
    public String toString() {
        return MoreObjects.toStringHelper(this)
            .add("table", table)
            .add("columns", columns)
            .add("values", valuesLists)
            .add("assignments", onDuplicateKeyAssignments)
            .toString();
    }

    @Override
    public <R, C> R accept(AstVisitor<R, C> visitor, C context) {
        return visitor.visitInsertFromValues(this, context);
    }
}