Twitter Giveaway bash+js script

README.md

This is a script picking winners for a contest where:

• every winning entry has to mention one other twitter account in a reply
• double winners are allowed

You'll need a few things installed:

• jq
• twarc
• boxes

Run npm install before running the script.

You'll also need to chmod +x ./giveaway.sh.

twarc needs to be configured using twarc configure

Replace the conversation ID and your Twitter handle with your data.

giveaway.sh

#!/bin/bash

clear
echo "Zero to Sold / Gratitude Giveaway" | boxes
echo ""
echo "Loading replies for the giveaway tweet (this could take a while)."

# twarc replies 1410898364691066881 --recursive > replies.jsonl
LINECOUNT=$(wc -l < replies.jsonl | xargs)
echo "Found $LINECOUNT replies."

echo "Loading retweets for the giveaway tweet."
# twarc retweets 1410898364691066881 > retweets.jsonl
LINECOUNTRT=$(wc -l < retweets.jsonl | xargs)
echo "Found $LINECOUNTRT retweets."

echo ""

cat replies.jsonl retweets.jsonl > all.jsonl
jq --slurp . <all.jsonl >all.json

echo "Picking random winners!"
node ./pick.js > winners.txt
cat winners.txt

package.json

{
  "name": "giveaway",
  "version": "1.0.0",
  "description": "",
  "main": "pick.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "lodash": "^4.17.21"
  }
}

pick.js

let fs = require ("fs")
let _ = require("lodash")

function getOthers(tweet) {
    let text = tweet.full_text.replace(/@arvidkahl/g, '').replace("@"+tweet.user.screen_name, '')
    let m =  text.match(/@[\S]+/);
    if (m) {m = m[0].replace(/[\.'].*/,"")}    
    return m || ""
}


function isAlreadyWinner(all, it) {
    if (!it || !it.user) return false;
    return _.some(all, (i)=> {
        return i.user.screen_name == it.user.screen_name || i.full_text.indexOf(it.user.screen_name)>-1 
    })
}

let data = _.map(JSON.parse(fs.readFileSync("./all.json", {encoding: 'utf-8'})), (i) => _.extend(i, {type: i.is_quote_status==true?'retweet':'reply'}))
const max_winners = 50

let candidates = []
candidates = _.shuffle(data)
candidates = _.filter(candidates, (i)=>{return i.user.screen_name!='arvidkahl'}) // filter out my own account
candidates = _.filter(candidates, (i)=>{return (getOthers(i))}) // only those who mention other accounts 
candidates = _.uniqBy(candidates, (i) => (i.user.screen_name + getOthers(i)).split('').sort().join('')) // filter out replies to replies 

winners = []

while (winners.length < max_winners) {
    let candidate = candidates.shift();
    if (!isAlreadyWinner(winners, candidate)) winners.push(candidate)
}

console.log("=== Long ===\n\n")

_.forEach(winners, (v, i)=>{
    console.log(`Winner #${i+1}: @${v.user.screen_name} (and ${getOthers(v)}) [${v.type}] https://twitter.com/${v.user.screen_name}/status/${v.id_str}`)
})

console.log("\n\n=== Tweetable ===\n\n")

_.forEach(winners, (v, i)=>{
    console.log(`Winner #${i+1}: @${v.user.screen_name} and ${getOthers(v)}`)
})

console.log("\n\n=== Accounts ===\n\n")

let names = []
_.forEach(winners, (v, i)=>{
    names.push(v.user.screen_name)
    names.push(getOthers(v).replace("@",''))
})
_.forEach(_.uniq(names.sort()), (v) => console.log(v))

I’m not sure if this is a feature, but right now if a name appear in multiple tweets its odds of being picked are increased. Maybe you should extract the list of twitter handles somehow, discard duplicates, and use the remaining list in order to pick a winner ?

Great idea. I'll keep track of winners and discard duplicates.