/*
 * SonarQube
 * Copyright (C) 2009-2017 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.scanner.protocol.input;

import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import javax.annotation.CheckForNull;
import javax.annotation.Nullable;
import org.sonar.scanner.protocol.GsonHelper;

/**
 * Container for all project data going from server to batch.
 * This is not an API since server and batch always share the same version.
 */
public class ProjectRepositories {

  private long timestamp;
  private boolean exists;
  private Map<String, Map<String, String>> settingsByModule = new HashMap<>();
  private Map<String, Map<String, FileData>> fileDataByModuleAndPath = new HashMap<>();
  private Date lastAnalysisDate;

  public Map<String, String> settings(String moduleKey) {
    return settingsByModule.containsKey(moduleKey) ? settingsByModule.get(moduleKey) : Collections.<String, String>emptyMap();
  }

  public Map<String, Map<String, String>> settings() {
    return settingsByModule;
  }

  public ProjectRepositories addSettings(String moduleKey, Map<String, String> settings) {
    Map<String, String> existingSettings = settingsByModule.get(moduleKey);
    if (existingSettings == null) {
      existingSettings = new HashMap<>();
      settingsByModule.put(moduleKey, existingSettings);
    }
    existingSettings.putAll(settings);
    return this;
  }

  public boolean exists() {
    return exists;
  }

  public Map<String, Map<String, FileData>> fileDataByModuleAndPath() {
    return fileDataByModuleAndPath;
  }

  public Map<String, FileData> fileDataByPath(String moduleKey) {
    return fileDataByModuleAndPath.containsKey(moduleKey) ? fileDataByModuleAndPath.get(moduleKey) : Collections.<String, FileData>emptyMap();
  }

  public ProjectRepositories addFileData(String moduleKey, @Nullable String path, FileData fileData) {
    if (path == null || (fileData.hash() == null && fileData.revision() == null)) {
      return this;
    }

    Map<String, FileData> existingFileDataByPath = fileDataByModuleAndPath.get(moduleKey);
    if (existingFileDataByPath == null) {
      existingFileDataByPath = new HashMap<>();
      fileDataByModuleAndPath.put(moduleKey, existingFileDataByPath);
    }
    existingFileDataByPath.put(path, fileData);
    return this;
  }

  @CheckForNull
  public FileData fileData(String projectKey, String path) {
    return fileDataByPath(projectKey).get(path);
  }

  public long timestamp() {
    return timestamp;
  }

  public void setTimestamp(long timestamp) {
    this.timestamp = timestamp;
  }

  @CheckForNull
  public Date lastAnalysisDate() {
    return lastAnalysisDate;
  }

  public void setLastAnalysisDate(@Nullable Date lastAnalysisDate) {
    this.lastAnalysisDate = lastAnalysisDate;
  }

  public String toJson() {
    return GsonHelper.create().toJson(this);
  }

  public static ProjectRepositories fromJson(String json) {
    return GsonHelper.create().fromJson(json, ProjectRepositories.class);
  }
}