/*
    * 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.
   */
  
  package org.basepom.mojo.dvc.version;
  
  import static com.google.common.base.Preconditions.checkNotNull;
  
  import org.basepom.mojo.dvc.QualifiedName;
  
  import java.util.Objects;
  
  import com.google.common.base.MoreObjects;
  import org.apache.maven.artifact.versioning.ComparableVersion;
  
  public final class VersionResolution {
  
      /**
       * The dependencies that requests this specific version resolution.
       */
      private final VersionResolutionElement requestingDependency;
  
      /**
       * The version expected by the requesting dependency.
       */
      private final ComparableVersion expectedVersion;
  
      public static VersionResolution forDirectDependency(final QualifiedName requestingDependency,
              final ComparableVersion expectedVersion,
              final boolean managedDependency) {
          return new VersionResolution(requestingDependency, expectedVersion, managedDependency, true);
      }
  
      public static VersionResolution forTransitiveDependency(final QualifiedName requestingDependency,
              final ComparableVersion expectedVersion,
              final boolean managedDependency) {
          return new VersionResolution(requestingDependency, expectedVersion, managedDependency, false);
      }
  
      private VersionResolution(
              final QualifiedName requestingDependency,
              final ComparableVersion expectedVersion,
              final boolean manageDependency,
              final boolean directDependency) {
          checkNotNull(requestingDependency, "requestingDependencyName is null");
          this.requestingDependency = new VersionResolutionElement(requestingDependency, manageDependency, directDependency);
          this.expectedVersion = checkNotNull(expectedVersion, "expectedVersion is null");
      }
  
      public VersionResolutionElement getRequestingDependency() {
          return requestingDependency;
      }
  
      public ComparableVersion getExpectedVersion() {
          return expectedVersion;
      }
  
      public void conflict() {
          requestingDependency.conflict();
      }
  
      @Override
      public boolean equals(final Object o) {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
          final VersionResolution that = (VersionResolution) o;
          return requestingDependency.equals(that.requestingDependency)
                  && expectedVersion.equals(that.expectedVersion);
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(requestingDependency, expectedVersion);
      }
  
      @Override
      public String toString() {
          return MoreObjects.toStringHelper(this)
                  .add("requestingDependency", requestingDependency)
                  .add("expectedVersion", expectedVersion)
                  .toString();
      }
  }