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index.js
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index.js
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var fs = require('fs');
var readline = require('readline');
var {google} = require('googleapis');
var OAuth2 = google.auth.OAuth2;
// If modifying these scopes, delete your previously saved credentials
// at ~/.credentials/youtube-nodejs-quickstart.json
var SCOPES = ['https://www.googleapis.com/auth/youtube.readonly'];
var TOKEN_DIR = (process.env.HOME || process.env.HOMEPATH ||
process.env.USERPROFILE) + '/.credentials/';
var TOKEN_PATH = TOKEN_DIR + 'youtube-nodejs-quickstart.json';
var unique = {};
fs.readFile('already_parsed', 'utf-8', function(err, content) {
if(content != undefined) {
unique = JSON.parse(content);
}
getNewGuys();
});
function getNewGuys() {
// Load client secrets from a local file.
fs.readFile('client_secret.json', function processClientSecrets(err, content) {
if (err) {
console.log('Error loading client secret file: ' + err);
return;
}
// Authorize a client with the loaded credentials, then call the YouTube API.
for (var i = 2; i < process.argv.length; i++) {
authorize(JSON.parse(content), getChannelsByKeyword, process.argv[i]);
}
});
}
/**
* Create an OAuth2 client with the given credentials, and then execute the
* given callback function.
*
* @param {Object} credentials The authorization client credentials.
* @param {function} callback The callback to call with the authorized client.
*/
function authorize(credentials, callback, keyword) {
var clientSecret = credentials.installed.client_secret;
var clientId = credentials.installed.client_id;
var redirectUrl = credentials.installed.redirect_uris[0];
var oauth2Client = new OAuth2(clientId, clientSecret, redirectUrl);
// Check if we have previously stored a token.
fs.readFile(TOKEN_PATH, "utf-8", function(err, token) {
if (err) {
getNewToken(oauth2Client, callback);
} else {
if(token == "") {
getNewToken(oauth2Client, callback);
} else {
oauth2Client.credentials = JSON.parse(token);
callback(oauth2Client, keyword);
}
}
});
}
/**
* Get and store new token after prompting for user authorization, and then
* execute the given callback with the authorized OAuth2 client.
*
* @param {google.auth.OAuth2} oauth2Client The OAuth2 client to get token for.
* @param {getEventsCallback} callback The callback to call with the authorized
* client.
*/
function getNewToken(oauth2Client, callback) {
var authUrl = oauth2Client.generateAuthUrl({
access_type: 'offline',
scope: SCOPES
});
console.log('Authorize this app by visiting this url: ', authUrl);
var rl = readline.createInterface({
input: process.stdin,
output: process.stdout
});
rl.question('Enter the code from that page here: ', function(code) {
rl.close();
oauth2Client.getToken(code, function(err, token) {
if (err) {
console.log('Error while trying to retrieve access token', err);
return;
}
oauth2Client.credentials = token;
storeToken(token);
callback(oauth2Client);
});
});
}
/**
* Store token to disk be used in later program executions.
*
* @param {Object} token The token to store to disk.
*/
function storeToken(token) {
try {
fs.mkdirSync(TOKEN_DIR);
} catch (err) {
if (err.code != 'EEXIST') {
throw err;
}
}
fs.writeFile(TOKEN_PATH, JSON.stringify(token));
console.log('Token stored to ' + TOKEN_PATH);
}
/**
* Lists the names and IDs of up to 10 files.
*
* @param {google.auth.OAuth2} auth An authorized OAuth2 client.
*/
function getChannel(id, auth) {
var service = google.youtube('v3');
service.channels.list({
auth: auth,
part: 'snippet,contentDetails,statistics,contentOwnerDetails',
id: id
}, function(err, response) {
if (err) {
console.log('The API returned an error: ' + err);
return;
}
var channels = response.data.items;
if (channels.length == 0) {
console.log('No channel found.');
} else {
if(channels[0].snippet.description.match(/game/)) {
console.log('%s,%s,%s,%s',
channels[0].id,
channels[0].snippet.title,
channels[0].statistics.subscriberCount,
'https://www.youtube.com/channel/' + channels[0].id + '/about');
}
}
});
}
function getChannelsByKeyword(auth, keyword) {
var service = google.youtube('v3');
service.search.list({
auth: auth,
part: 'snippet',
regionCode: 'US',
q: keyword,
maxResults: 50,
}, function(err, response) {
if(err) {
console.log('The API returned an error: ' + err);
return;
}
parseResponse(auth, response, 0);
});
}
function getNextChannels(auth, token, dupes) {
var service = google.youtube('v3');
service.search.list({
auth: auth,
part: 'snippet',
nextPageToken: token,
maxResults: 50,
}, function(err, response) {
if(err) {
console.log('The API returned an error: ' + err);
return;
}
parseResponse(auth, response, dupes);
fs.writeFile("./already_parsed", JSON.stringify(unique), function(err) {
if(err) console.log(err);
})
});
}
function parseResponse(auth, response, dupes) {
var token = response.data.nextPageToken;
response.data.items.forEach(function(value) {
if(unique[value.snippet.channelId] == undefined) {
getChannel(value.snippet.channelId, auth);
unique[value.snippet.channelId] = true;
} else {
dupes++;
}
});
if(token != undefined && dupes < 100) {
getNextChannels(auth, token, dupes);
}
}