// Copyright (C) 2008 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.client.data;

import com.google.gerrit.client.reviewdb.Account;
import com.google.gerrit.client.reviewdb.AccountGroup;
import com.google.gerrit.client.reviewdb.ApprovalCategory;
import com.google.gerrit.client.reviewdb.ChangeApproval;
import com.google.gerrit.client.reviewdb.ProjectRight;

import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class ApprovalDetail {
  static final Timestamp EG_0 = new Timestamp(0);
  static final Timestamp EG_D = new Timestamp(Long.MAX_VALUE);

  protected Account.Id account;
  protected List<ChangeApproval> approvals;

  transient int hasNonZero;
  transient Timestamp sortOrder = EG_D;

  protected ApprovalDetail() {
  }

  public ApprovalDetail(final Account.Id id) {
    account = id;
    approvals = new ArrayList<ChangeApproval>();
  }

  public Account.Id getAccount() {
    return account;
  }

  public Map<ApprovalCategory.Id, ChangeApproval> getApprovalMap() {
    final HashMap<ApprovalCategory.Id, ChangeApproval> r;
    r = new HashMap<ApprovalCategory.Id, ChangeApproval>();
    for (final ChangeApproval ca : approvals) {
      r.put(ca.getCategoryId(), ca);
    }
    return r;
  }

  void add(final ChangeApproval ca) {
    approvals.add(ca);

    final Timestamp g = ca.getGranted();
    if (g != null && g.compareTo(sortOrder) < 0) {
      sortOrder = g;
    }
    if (ca.getValue() != 0) {
      hasNonZero = 1;
    }
  }

  void applyProjectRights(final GroupCache groupCache,
      final Map<ApprovalCategory.Id, Collection<ProjectRight>> rights) {
    final Set<AccountGroup.Id> groups = groupCache.getEffectiveGroups(account);
    for (final ChangeApproval a : approvals) {
      Collection<ProjectRight> l = rights.get(a.getCategoryId());
      short min = 0, max = 0;
      if (l != null) {
        for (final ProjectRight r : l) {
          if (groups.contains(r.getAccountGroupId())) {
            min = (short) Math.min(min, r.getMinValue());
            max = (short) Math.max(max, r.getMaxValue());
          }
        }
      }

      if (a.getValue() < min) {
        a.setValue(min);
      } else if (a.getValue() > max) {
        a.setValue(max);
      }
    }
  }
}