// Copyright (C) 2012 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.server.account;

import static java.util.stream.Collectors.toList;

import com.google.common.collect.ImmutableList;
import com.google.gerrit.common.data.GroupDescription;
import com.google.gerrit.common.data.GroupReference;
import com.google.gerrit.reviewdb.client.AccountGroup;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.IdentifiedUser;
import com.google.gerrit.server.group.Groups;
import com.google.gerrit.server.group.InternalGroupDescription;
import com.google.gerrit.server.project.ProjectState;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.util.Collection;
import org.eclipse.jgit.lib.ObjectId;

/** Implementation of GroupBackend for the internal group system. */
@Singleton
public class InternalGroupBackend implements GroupBackend {
  private final GroupControl.Factory groupControlFactory;
  private final GroupCache groupCache;
  private final Groups groups;
  private final Provider<ReviewDb> db;
  private final IncludingGroupMembership.Factory groupMembershipFactory;

  @Inject
  InternalGroupBackend(
      GroupControl.Factory groupControlFactory,
      GroupCache groupCache,
      Groups groups,
      Provider<ReviewDb> db,
      IncludingGroupMembership.Factory groupMembershipFactory) {
    this.groupControlFactory = groupControlFactory;
    this.groupCache = groupCache;
    this.groups = groups;
    this.db = db;
    this.groupMembershipFactory = groupMembershipFactory;
  }

  @Override
  public boolean handles(AccountGroup.UUID uuid) {
    // See AccountGroup.isInternalGroup
    return ObjectId.isId(uuid.get()); // [0-9a-f]{40};
  }

  @Override
  public GroupDescription.Internal get(AccountGroup.UUID uuid) {
    if (!handles(uuid)) {
      return null;
    }

    return groupCache.get(uuid).map(InternalGroupDescription::new).orElse(null);
  }

  @Override
  public Collection<GroupReference> suggest(String name, ProjectState project) {
    try {
      return groups
          .getAll(db.get())
          .filter(group -> startsWithIgnoreCase(group, name))
          .filter(this::isVisible)
          .map(GroupReference::forGroup)
          .collect(toList());
    } catch (OrmException e) {
      return ImmutableList.of();
    }
  }

  private static boolean startsWithIgnoreCase(AccountGroup group, String name) {
    return group.getName().regionMatches(true, 0, name, 0, name.length());
  }

  private boolean isVisible(AccountGroup group) {
    return groupControlFactory.controlFor(group).isVisible();
  }

  @Override
  public GroupMembership membershipsOf(IdentifiedUser user) {
    return groupMembershipFactory.create(user);
  }

  @Override
  public boolean isVisibleToAll(AccountGroup.UUID uuid) {
    GroupDescription.Internal g = get(uuid);
    return g != null && g.isVisibleToAll();
  }
}

@@ -1238,21 +1238,35 @@
 gle.
-inject.Inject
+gwtorm.server.SchemaFactory
 ;%0Aim
@@ -1288,24 +1288,22 @@
 .inject.
-Provider
+Inject
 ;%0Aimport
@@ -1684,24 +1684,29 @@
 e final 
-Provider
+SchemaFactory
 %3CReviewD
@@ -1708,18 +1708,22 @@
 viewDb%3E 
-db
+schema
 ;%0A  priv
@@ -1932,16 +1932,21 @@
     
-Provider
+SchemaFactory
 %3CRev
@@ -1952,18 +1952,22 @@
 viewDb%3E 
-db
+schema
 ,%0A      
@@ -2150,15 +2150,23 @@
 his.
-db = db
+schema = schema
 ;%0A  
@@ -2704,16 +2704,46 @@
 %0A    try
+ (ReviewDb db = schema.open())
  %7B%0A     
@@ -2777,22 +2777,16 @@
 etAll(db
-.get()
 )%0A      

Fix provisioning of ReviewDb in InternalGroupBackend