/*
    * Licensed to The Apereo Foundation under one or more contributor license
    * agreements. See the NOTICE file distributed with this work for additional
    * information regarding copyright ownership.
    *
    *
    * The Apereo Foundation licenses this file to you under the Educational
    * Community 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://opensource.org/licenses/ecl2.txt
   *
   * 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.opencastproject.editor.api;
  
  import static java.util.Objects.requireNonNull;
  
  import org.opencastproject.security.api.User;
  import org.opencastproject.util.data.Tuple;
  
  import com.google.gson.Gson;
  import com.google.gson.GsonBuilder;
  import com.google.gson.annotations.SerializedName;
  
  import java.util.Collections;
  import java.util.List;
  import java.util.UUID;
  
  /**
   * Provides access to the parsed editing information
   */
  public class EditingData {
    public static final String WORKFLOW_ACTIVE = "workflow_active";
    public static final String LOCKING_ACTIVE = "locking_active";
    public static final String LOCK_REFRESH = "lock_refresh";
    public static final String LOCK_UUID = "lock_uuid";
    public static final String LOCK_USER = "lock_user";
    private final List<SegmentData> segments;
    private final List<WorkflowData> workflows;
    private final List<TrackData> tracks;
    private final String title;
    private final String date;
    private final Long duration;
    private final SeriesData series;
    @SerializedName(WORKFLOW_ACTIVE)
    private final Boolean workflowActive;
    @SerializedName(LOCKING_ACTIVE)
    private final Boolean lockingActive;
    @SerializedName(LOCK_REFRESH)
    private final Integer lockRefresh;
    @SerializedName(LOCK_UUID)
    private final String lockUUID;
    @SerializedName(LOCK_USER)
    private final String lockUser;
  
    private final List<String> waveformURIs;
    private final List<Subtitle> subtitles;
    private final List<Subtitle> chapters;
    private final Boolean local;
  
    private final String metadataJSON;
  
    public EditingData(List<SegmentData> segments, List<TrackData> tracks, List<WorkflowData> workflows, Long duration,
            String title, String recordingStartDate, String seriesId, String seriesName, Boolean workflowActive,
            List<String> waveformURIs, List<Subtitle> subtitles, List<Subtitle> chapters, Boolean local,
            Boolean lockingActive, Integer lockRefresh, User user, String metadataJSON) {
      this.segments = segments;
      this.tracks = tracks;
      this.workflows = workflows;
      this.duration = duration;
      this.title = title;
      this.date = recordingStartDate;
      this.series = new SeriesData(seriesId, seriesName);
      this.workflowActive = workflowActive;
      this.waveformURIs = waveformURIs;
      this.subtitles = subtitles;
      this.chapters = chapters;
      this.local = local;
      this.lockingActive = lockingActive;
      this.lockRefresh = lockRefresh * 1000;
      this.lockUUID = UUID.randomUUID().toString();
      this.lockUser = user.getUsername();
      this.metadataJSON = metadataJSON;
    }
  
    public static EditingData parse(String json) {
      requireNonNull(json);
      Gson gson = new Gson();
      EditingData editingData = gson.fromJson(json, EditingData.class);
      requireNonNull(editingData.getTracks());
      requireNonNull(editingData.getSegments());
  
     return editingData;
   }
 
   /**
    * Returns a list of {@link Tuple} that each represents a segment. {@link Tuple#getA()} marks the start point,
    * {@link Tuple#getB()} the endpoint of the segement.
    */
   public List<SegmentData> getSegments() {
     return Collections.unmodifiableList(segments);
   }
 
    /**
    * Returns the optional workflow to start
    */
   public String getPostProcessingWorkflow() {
     return (workflows != null && workflows.size() > 0) ? workflows.get(0).getId() : null;
   }
 
   public List<TrackData> getTracks() {
     return Collections.unmodifiableList(tracks);
   }
 
   public List<Subtitle> getSubtitles() {
     return subtitles;
   }
 
   public List<Subtitle> getChapters() {
     return chapters;
   }
 
   public String getMetadataJSON() {
     return metadataJSON;
   }
 
   public String toString() {
     Gson gson = new GsonBuilder().serializeNulls().create();
     return gson.toJson(this);
   }
 
   public static final class Subtitle {
     private final String id;
     /** content of the subtitle */
     private final String subtitle;
     private final String[] tags;
     private final boolean deleted;
 
     public Subtitle(String id, String subtitle, String[] tags) {
       this(id, subtitle, tags,false);
     }
 
     public Subtitle(String id, String subtitle, String[] tags, boolean deleted) {
       this.id = id;
       this.subtitle = subtitle;
       this.tags = tags;
       this.deleted = deleted;
     }
 
     public String getId() {
       return id;
     }
 
     public String getSubtitle() {
       return subtitle;
     }
 
     public String[] getTags() {
       return tags;
     }
 
     public boolean isDeleted() {
       return deleted;
     }
 
   }
 }