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/*
* mongo-edu
*
* Copyright (c) 2014 Przemyslaw Pluta
* Licensed under the MIT license.
* https://github.com/przemyslawpluta/mongo-edu/blob/master/LICENSE
*/
var path = require('path'),
fs = require('fs'),
youtubedl = require('youtube-dl'),
filesize = require('filesize'),
ProgressBar = require('progress'),
request = require('request'),
progress = require('request-progress'),
colors = require('colors'),
_ = require('lodash');
var downloadPath = '', ncc = false, handout = false;
var handleList = function handleList(list) {
var currentList = list,
opt = (!ncc) ? ['--max-quality=18'] : ['--max-quality=18', '--no-check-certificate'],
getHandouts = function getHandouts(item) {
var name = path.basename(item), bar, dounloadFile, dlh, left,
downloadItem = function downloadItem() {
dlh = progress(request(item), { throttle: 0 });
console.log('[' + 'i'.magenta + '] Downloading: ' + name.cyan);
dlh.on('progress', function(state) {
if (!bar) {
bar = new ProgressBar('[' + '>'.green + '] ' + filesize(state.total) + ' [:bar] :percent :etas', { complete: '=', incomplete: ' ', width: 20, total: 100.0 });
}
if (!bar.complete) { bar.tick(parseInt(state.percent, 10)); }
});
dlh.on('error', function error(err) {
return console.log(err.stack);
});
dounloadFile = dlh.pipe(fs.createWriteStream(downloadPath + name));
dounloadFile.on('close', function close() {
console.log('[' + 'i'.green + '] Done.' + left);
handleList(currentList);
});
dounloadFile.on('error', function error(err) {
return console.log(err.stack);
});
};
fs.exists(downloadPath + name, function (exists) {
left = (currentList.length)? ' ' + currentList.length + ' left ...' : '';
if (exists) {
console.log('[' + '>'.magenta + '] ' + name + ' has already been downloaded.' + left);
return handleList(currentList);
}
downloadItem();
});
},
getVideos = function getVideos(item) {
if (handout) { return getHandouts(item); }
var dl = youtubedl.download(item, downloadPath, opt), bar;
dl.on('download', function download(data) {
console.log('[' + 'i'.magenta + '] Downloading: ' + data.filename.cyan + ' > ' + item);
bar = new ProgressBar('[' + '>'.green + '] ' + data.size + ' [:bar] :percent :etas', { complete: '=', incomplete: ' ', width: 20, total: 100.0 });
});
dl.on('progress', function progress(data) {
if (!bar.complete) { bar.tick(parseInt(data.percent, 10)); }
});
dl.on('error', function error(err) {
return console.log(err.stack);
});
dl.on('end', function end(data) {
var left = (currentList.length)? ' ' + currentList.length + ' left ...' : '';
if (data.filename) {
if (data.filename.indexOf('has already been downloaded') !== -1) {
console.log('[' + '>'.magenta + '] ' + data.filename + '.' + left);
} else {
console.log('[' + 'i'.green + '] Done in ' + data.timeTakenms + 'ms.' + left);
}
} else {
console.log('[' + 'i'.red + '] Download Issues');
}
handleList(currentList);
});
};
if (currentList.length) { return getVideos(currentList.shift()); }
console.log('[ Finished ]'.green);
};
module.exports = {
details: function details(opt, argv, callback) {
downloadPath = argv.d;
if (argv.ncc) { ncc = true; }
if (argv.h) { handout = true; }
var bar = new ProgressBar('[' + '>'.magenta + '] Collecting [:bar] :percent', { complete: '=', incomplete: ' ', width: 20, total: opt.length }),
options = (!ncc) ? [] : ['--no-check-certificate'];
var isFinished = function isFinished(count, items) {
if (count === 0) {
var sortedList = _.map(_.sortBy(items, 'id'));
sortedList.unshift({name: 'All', value: 'all', checked: true}, {name: 'Cancel', value: 'cancel'});
callback(null, sortedList);
}
},
getDetails = function getDetails(item, i) {
function getInfo() {
if (handout) {
items.push({name: path.basename(item), value: item, id: i});
count = count - 1;
bar.tick();
return isFinished(count, items);
}
youtubedl.getInfo(item, options, function(err, info) {
items.push((!err)?{name: info.title + ' - ' + info.resolution, value: item, id: i}:{name: 'No info: ' + item, value: item, id: i});
count = count - 1;
bar.tick();
isFinished(count, items);
});
}
setTimeout(function timeout(){ getInfo(); }, 100 * i);
}, items = [], list = [], i, count;
list = _.filter(opt, function filter(item) { return (item.indexOf('http://') !== -1) || (item.indexOf('https://') !== -1); });
if (!list.length) { return callback(null, list); }
count = list.length;
for (i = 0; i < list.length; i++) {
getDetails(list[i], i);
}
},
download: function download(opt, list) {
var options = opt.videos, fullList = [], selected = [];
if (options.length === 1 && options[0] === 'cancel') { return console.log('Cancel'); }
if (options.length === 1 && options[0] === 'all') {
fullList = _.pull(_.map(list, function map(item) { return item.value; }), 'all', 'cancel');
return handleList(fullList);
}
if (options.length >= 1) {
selected = _.pull(options, 'all', 'cancel');
if (selected.length) { return handleList(selected); }
}
}
};
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