instagram scrape ruby

instagram_scrape.rb

instagram_username = "foofighters"

def instagram_scraper(instagram_username)
  require "mechanize"
  mechanize   = Mechanize.new
  page = mechanize.get("https://www.instagram.com/#{instagram_username}")

  scripts     = page.search("script").map(&:to_s)
  script      = scripts.select{|script| /window._sharedData =/ =~ script}.first
  _sharedData = JSON.parse(script.split("window._sharedData = ").second.split(";</script>").first)
  feed        = _sharedData.dig('entry_data','ProfilePage', 0, 'user', 'media', 'nodes') || []
end

# example
# [
#   {
#     "__typename":"GraphImage",
#     "id":"1459689546726893592",
#     "comments_disabled":false,
#     "dimensions":{
#       "height":742,
#       "width":750
#     },
#     "owner":{
#       "id":"4574754"
#     },
#     "thumbnail_src":"https://instagram.fmad3-2.fna.fbcdn.net/t51.2885-15/s640x640/sh0.08/e35/c4.0.742.742/17076123_494530134267787_3148910248643788800_n.jpg",
#     "is_video":false,
#     "code":"BRB2-izAegY",
#     "date":1488228575,
#     "display_src":"https://instagram.fmad3-2.fna.fbcdn.net/t51.2885-15/e35/17076123_494530134267787_3148910248643788800_n.jpg",
#     "caption":"Get ready for many more surprises... Sign up for the newsletter at FooFighters.com to be the first to know!",
#     "comments":{
#       "count":185
#     },
#     "likes":{
#       "count":21451
#     }
#   }
# ]