instagram_liker.rb

require "rubygems"
require "selenium-webdriver"
require "dotenv"

Dotenv.load
@driver = Selenium::WebDriver.for :firefox
@driver.manage.timeouts.implicit_wait = 10
@driver.navigate.to "instagram.com"

def login
  @driver.find_element(:name, "username").send_keys(ENV["INSTAGRAM_USERNAME"])
  @driver.find_element(:name, "password").send_keys(ENV["INSTAGRAM_PASSWORD"])
  @driver.find_element(:xpath, "//button").click
end

def things_to_like
  @driver.find_elements(:partial_link_text, "Like")
end

def scroll_to_autoload
  load_more_button = @driver.find_elements(:css, ".-cx-PRIVATE-AutoloadingPostsGrid__moreLink")
  load_more_button.first.click if load_more_button.any?
  @driver.execute_script("window.scrollTo(0,document.body.scrollHeight);")
  @driver.execute_script("window.scrollTo(0,0);")
  @driver.execute_script("window.scrollTo(0,document.body.scrollHeight);")
end

login
count = 0
already_liked_pages = 0
current_time = Time.now

while current_time + 300 < Time.now || already_liked_pages <= 3
  if things_to_like.any?
    things_to_like.each do |l| 
      l.click
      count += 1
    end
  else
    already_liked_pages += 1
  end
  scroll_to_autoload
  sleep(3)
end

open('instagram.log', 'a') do |f|
  f.puts "#{Time.now} : You liked #{count} things."
end