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/*
 * Copyright © 2021-present Arcade Data Ltd ([email protected])
 *
 * 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.
 *
 * SPDX-FileCopyrightText: 2021-present Arcade Data Ltd ([email protected])
 * SPDX-License-Identifier: Apache-2.0
 */
package com.arcadedb.database.async;

import com.arcadedb.database.DatabaseInternal;
import com.arcadedb.database.Identifiable;
import com.arcadedb.graph.Edge;
import com.arcadedb.graph.VertexInternal;

/**
 * Asynchronous Task that creates the edge that connects 2 vertices.
 */
public class CreateEdgeAsyncTask implements DatabaseAsyncTask {
  protected final Identifiable sourceVertex;
  protected final Identifiable destinationVertex;

  protected final String   edgeType;
  protected final Object[] edgeAttributes;

  protected final boolean         bidirectional;
  protected final boolean         light;
  protected final NewEdgeCallback callback;

  public CreateEdgeAsyncTask(final Identifiable sourceVertex, final Identifiable destinationVertex, final String edgeType, final Object[] edgeAttributes,
      final boolean bidirectional, final boolean light, final NewEdgeCallback callback) {
    this.sourceVertex = sourceVertex;
    this.destinationVertex = destinationVertex;

    this.edgeType = edgeType;
    this.edgeAttributes = edgeAttributes;

    this.bidirectional = bidirectional;
    this.light = light;
    this.callback = callback;
  }

  @Override
  public void execute(final DatabaseAsyncExecutorImpl.AsyncThread async, final DatabaseInternal database) {
    createEdge(database, sourceVertex, destinationVertex, false, false);
  }

  protected void createEdge(final DatabaseInternal database, final Identifiable sourceVertex, final Identifiable destinationVertex,
      final boolean createdSourceVertex, final boolean createdDestinationVertex) {

    final Edge edge;

    if (light)
      edge = database.getGraphEngine().newLightEdge((VertexInternal) sourceVertex.getRecord(), edgeType, destinationVertex.getIdentity(), bidirectional);
    else
      edge = database.getGraphEngine()
          .newEdge((VertexInternal) sourceVertex.getRecord(), edgeType, destinationVertex.getIdentity(), bidirectional, edgeAttributes);

    if (callback != null)
      callback.call(edge, createdSourceVertex, createdDestinationVertex);
  }

  @Override
  public String toString() {
    return "CreateEdgeAsyncTask(" + sourceVertex + "->" + destinationVertex + ")";
  }
}