InstagramClient for the latest 12 posts

E001_instagram_public.rb

require 'json'
require 'http'

class InstagramClient
  attr_reader :posts, :followers

  def initialize(instagram_handle)
    @instagram_handle = instagram_handle
    @url = "https://www.instagram.com/#{@instagram_handle}/?__a=1".freeze
    @data = JSON.parse HTTP.get(@url).to_s
    set_posts_and_followers
    compact_info
  end

  def set_posts_and_followers
    @followers = valid_handle? ? @data["graphql"]["user"]["edge_followed_by"]["count"] : nil
    @posts = posts_present? ? @data["graphql"]["user"]["edge_owner_to_timeline_media"]["edges"] : []
  end

  def compact_info
    @posts.map do |post|
      {
        short_code: post["node"]["shortcode"],
        thumbnail: post["node"]["thumbnail_resources"][1],
        video: post["node"]["is_video"]
      }
    end
  end

  private

  def valid_handle?
    !@data.empty?
  end

  def posts_present?
    @data["graphql"]["user"]["edge_owner_to_timeline_media"]["edges"].any? && valid_handle?
  end
end