/*
This file is part of FreeTube.

FreeTube is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

FreeTube 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with FreeTube.  If not, see <http://www.gnu.org/licenses/>.
*/



/*
* File used for functions related to video history.
*/

/**
* Add a video to the history database file
*
* @param {string} videoId - The video ID of the video to be saved.
*
* @return {Void}
*/
function addToHistory(videoId){
  const data = {
    videoId: videoId,
    timeWatched: new Date().getTime(),
  };
  historyDb.insert(data, (err, newDoc) => {});
}

/**
* Remove a video from the history database file
*
* @param {string} videoId - The video ID of the video to be removed.
*
* @return {Void}
*/
function removeFromHistory(videoId){
  const data = {videoId: videoId};
  historyDb.remove(data, {}, (err, numRemoved) => {});
}

/**
* Show the videos within the history database.
*
* @return {Void}
*/
function showHistory(){
  clearMainContainer();
  startLoadingAnimation();
  console.log('checking history');

  let videoList = '';

  historyDb.find({}).sort({
    timeWatched: -1
  }).exec((err, docs) => {
    if(docs.length > 49){
      // The YouTube API limits the search to 50 videos, so grab 50 most recent.
      for (let i = 0; i < 49; i++) {
        videoList = videoList + ',' + docs[i]['videoId'];
      }
    }
    else{
      docs.forEach((video) => {
        videoList = videoList + ',' + video['videoId'];
      });
    }

    youtubeAPI('videos', {
      part: 'snippet',
      id: videoList,
      maxResults: 50,
    }, function (data) {
      createVideoListContainer('Watch History:');
      data['items'].forEach((video) => {
        displayVideo(video, 'history');
      });
      stopLoadingAnimation()
    });
  });
}