gerrit-httpd/src/main/java/com/google/gerrit/httpd/rpc/project/ProjectDetailFactory.java

// Copyright (C) 2009 The Android Open Source Project
//
// 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 com.google.gerrit.httpd.rpc.project;

import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.gerrit.common.data.ApprovalType;
import com.google.gerrit.common.data.ApprovalTypes;
import com.google.gerrit.common.data.InheritedRefRight;
import com.google.gerrit.common.data.ProjectDetail;
import com.google.gerrit.httpd.rpc.Handler;
import com.google.gerrit.reviewdb.AccountGroup;
import com.google.gerrit.reviewdb.Project;
import com.google.gerrit.reviewdb.RefRight;
import com.google.gerrit.server.account.GroupCache;
import com.google.gerrit.server.project.NoSuchProjectException;
import com.google.gerrit.server.project.ProjectControl;
import com.google.gerrit.server.project.ProjectState;
import com.google.gerrit.server.util.FutureUtil;
import com.google.inject.Inject;
import com.google.inject.assistedinject.Assisted;

import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Future;

class ProjectDetailFactory extends Handler<ProjectDetail> {
  interface Factory {
    ProjectDetailFactory create(@Assisted Project.NameKey name);
  }

  private final ApprovalTypes approvalTypes;
  private final GroupCache groupCache;
  private final ProjectControl.Factory projectControlFactory;

  private final Project.NameKey projectName;
  private Map<AccountGroup.Id, Future<AccountGroup>> groups;

  @Inject
  ProjectDetailFactory(final ApprovalTypes approvalTypes,
      final GroupCache groupCache,
      final ProjectControl.Factory projectControlFactory,

      @Assisted final Project.NameKey name) {
    this.approvalTypes = approvalTypes;
    this.groupCache = groupCache;
    this.projectControlFactory = projectControlFactory;

    this.projectName = name;
  }

  @Override
  public ProjectDetail call() throws NoSuchProjectException {
    final ProjectControl pc =
        projectControlFactory.validateFor(projectName, ProjectControl.OWNER
            | ProjectControl.VISIBLE);
    final ProjectState projectState = pc.getProjectState();
    final ProjectDetail detail = new ProjectDetail();
    detail.setProject(projectState.getProject());

    groups = Maps.newHashMap();

    final List<InheritedRefRight> refRights = Lists.newArrayList();
    for (final RefRight r : projectState.getInheritedRights()) {
      InheritedRefRight refRight =
          new InheritedRefRight(r, true, pc.controlForRef(r.getRefPattern())
              .isOwner());
      if (!refRights.contains(refRight)) {
        refRights.add(refRight);
        want(r.getAccountGroupId());
      }
    }

    for (final RefRight r : projectState.getLocalRights()) {
      refRights.add(new InheritedRefRight(r, false, pc.controlForRef(
          r.getRefPattern()).isOwner()));
      want(r.getAccountGroupId());
    }

    Collections.sort(refRights, new Comparator<InheritedRefRight>() {
      @Override
      public int compare(final InheritedRefRight a, final InheritedRefRight b) {
        final RefRight right1 = a.getRight();
        final RefRight right2 = b.getRight();
        int rc = categoryOf(right1).compareTo(categoryOf(right2));
        if (rc == 0) {
          rc = right1.getRefPattern().compareTo(right2.getRefPattern());
        }
        if (rc == 0) {
          rc = groupOf(right1).compareTo(groupOf(right2));
        }
        return rc;
      }

      private String categoryOf(final RefRight r) {
        final ApprovalType type =
            approvalTypes.getApprovalType(r.getApprovalCategoryId());
        if (type == null) {
          return r.getApprovalCategoryId().get();
        }
        return type.getCategory().getName();
      }

      private String groupOf(RefRight r) {
        return FutureUtil.get(want(r.getAccountGroupId())).getName();
      }
    });

    final boolean userIsOwner = pc.isOwner();
    final boolean userIsOwnerAnyRef = pc.isOwnerAnyRef();

    detail.setRights(refRights);
    detail.setGroups(FutureUtil.getMap(groups));
    detail.setCanModifyAccess(userIsOwnerAnyRef);
    detail.setCanModifyAgreements(userIsOwner);
    detail.setCanModifyDescription(userIsOwner);
    detail.setCanModifyMergeType(userIsOwner);
    return detail;
  }

  private Future<AccountGroup> want(AccountGroup.Id id) {
    Future<AccountGroup> f = groups.get(id);
    if (f == null) {
      f = groupCache.get(id);
      groups.put(id, f);
    }
    return f;
  }
}