Download all the images from a user on https://vsco.co

vsco.rb

# frozen_string_literal: true
# rubocop:disable Layout/LineLength

require 'net/https'
require 'ruby-cheerio'
require 'json'
require 'cgi'
require 'open-uri'

# Pick your target here
# Example: https://vsco.co/TARGET
TARGET = 'USERNAME'

# The cookie can be grabbed from the devtool in your browser
cookie_value = 'Cookie: ...'

# rubocop:enable Layout/LineLength
raise 'TARGET or cookie_value cannot be empty' if (TARGET || cookie_value).empty?

def send_request(uri, params)
  req = Net::HTTP.get_response uri, params
  raise "Something went wrong, code #{req.code} with message #{req.body}" unless req.is_a? Net::HTTPSuccess

  req
end

ENDPOINT = 'https://vsco.co/'
PATH = '/gallery'
uri = URI(ENDPOINT + TARGET + PATH)
params = {
  'user-agent' => 'curl',
  Cookie: cookie_value
}

req = send_request(uri, params)
parsed = RubyCheerio.new req.body
script_tags = parsed.find('script')
tags_length = script_tags.length

padding = 3
script_tag_variable = script_tags[tags_length - padding]
js_variable = script_tag_variable.text

PREFIX = 'window.__PRELOADED_STATE__ = '
json_data = js_variable.delete_prefix(PREFIX)

json = JSON.parse(json_data)
user_id = json['sites']['siteByUsername'][TARGET]['site']['id']

cursor = nil
Dir.mkdir('downloads') unless Dir.exist?('downloads')

loop do
  api = "https://vsco.co/api/3.0/medias/profile?site_id=#{user_id}&limit=14&cursor=#{cursor}"
  uri = URI(api)
  req = send_request(uri, params)

  resp = JSON.parse(req.body)
  resp['media'].each do |image|
    download_file = "https://#{image['image']['responsive_url']}"
    file = URI(download_file).open

    format = image['image']['is_video'] ? 'mp4' : 'jpg'
    filename = File.expand_path("./downloads/#{image['image']['_id']}.#{format}")

    IO.copy_stream(file, filename)
    puts "Downloaded: #{download_file}"
  end

  next_cursor = resp['next_cursor']
  break if next_cursor.nil?

  cursor = CGI.escape(resp['next_cursor'])
end