app.js

var Twitter = require('twitter')
var config = require('./config.js')
var T = new Twitter(config)
var statusURL = 'https://twitter.com/statuses/'

var targetUserId = '@nick130586'
var targetUserDisplayName = 'nick130586'

// Set up your search parameters

var keywordSearchParams = {
	q: targetUserId,
	count: 50,
	result_type: 'recent',
	lang: 'en',
	screen_name: targetUserDisplayName
}

var mentionParams = {
	q: targetUserId,
	count: 1,
	result_type: 'recent',
	lang: 'en',
	screen_name: targetUserDisplayName
}

var replyParams = {
	count: 1,
	lang: 'en',
	screen_name: targetUserDisplayName
}

var keywordToSearchFor = ''

var usersToMention = '' //add usernames separated by whitespace, for example, '@POTUS @VP @StateDept'

//set up tweet time interval
var INTERVAL = 3 * 60 * 60 * 1000; // run every 3 hours

//set up array of tweets that can be randomly selected
var TWEETS_TO_REPLY = [
" ",
" ",
" ",
" ",
" "
];

function findAndPrintLinksToTwees() {
	// Get URLs to the user's recent tweets that contain a keyword
	T.get('statuses/user_timeline', keywordSearchParams, function(err, data, response) {
    	if (!err) {
    		for (var i = 0; i < data.length; i++) {
    			if (data[i].text.includes(keywordToSearchFor)) {
    				console.log(statusURL + data[i].id_str)
    			}
    		}
    	} else {
    		console.log(err)
    	}
    })
}

function findAndReplyToMention() {
	// Search for a recent tweet in English where nick130586 is mentioned and reply to it
	T.get('search/tweets', mentionParams, function(err, data, response) {
    	if (!err) {
    		var latestTweet = data.statuses[0]
    		console.log(latestTweet)
    		T.post('statuses/update', { in_reply_to_status_id: latestTweet.id_str, status: '@' + latestTweet.user.screen_name + ' ' + TWEETS_TO_REPLY[Math.floor(Math.random() * TWEETS_TO_REPLY.length)] + ' ' + usersToMention }, function(err, response) {
    			if (err) {
    				console.log(err[0].message)
    			} else {
    				let username = response.user.screen_name
    				let tweetId = response.id_str

    				console.log('Replied to ' + latestTweet.user.screen_name + ':')
    				console.log(latestTweet.text);
    				console.log('-----------------------------------------')
    			}
    		})
    	} else {
    		console.log(err)
    	}
    })
}

function findAndReplyToTweet() {
	// Search for a recent tweet in English by nick130586 and reply to it
	T.get('statuses/user_timeline', replyParams, function(err, data, response) {
		if (!err) {
			var latestTweet = data[0]
			console.log(latestTweet)
			if (latestTweet.lang == 'en') {
				var createdAt = latestTweet.created_at
				var tweetDate = Date.parse(createdAt.replace(/( \+)/, ' UTC$1'))
				var now = Date.now();

				var hoursAgo = function dhm(ms) {
					days = Math.floor(ms / (24 * 60 * 60 * 1000))
					daysms = ms % (24 * 60 * 60 * 1000);
					hours = Math.floor((daysms) / (60 * 60 * 1000))

					return hours
				}
				
				if (hoursAgo(now - tweetDate) < 3) {
    				//reply only if the tweet is recent (our reply is likely to get more impressions in this case)
    				T.post('statuses/update', { in_reply_to_status_id: latestTweet.id_str, status: '@' + latestTweet.user.screen_name + ' ' + TWEETS_TO_REPLY[Math.floor(Math.random() * TWEETS_TO_REPLY.length)] + ' ' + usersToMention }, function(err, response) {
    					if (err) {
    						console.log(err[0].message)
    					} else {
    						console.log('Replied to nick130586:')
    						console.log(latestTweet.text)
    						console.log('-----------------------------------------')
    					}
    				})
    			}
    		} 
    	} else {
    		console.log(err)
    	} 
    })
}

function BotStart() {
	//findAndReplyToMention()
	//findAndReplyToTweet()
	findAndPrintLinksToTwees()
}

// Start bot and timer
BotStart();
setInterval(BotStart, INTERVAL);