require 'nokogiri'
require 'rest-client'
require 'pry'

class GithubGists
  attr_accessor :gist_base_url, :discover_url

  def initialize()
    @gist_base_url = 'https://gist.github.com'
    @discover_url = "#{gist_base_url}/discover"
  end

  def get_gists_from_discover
    # there are some url params we can use to fine tweak this. 
    # - recently created
    # - last recently created
    # - recently updated
    # - last recently updated
    # we can add these params in instead of just one fetch of the regular discover_url
    response = RestClient::Request.execute(
      :method => :get,
      :url => @discover_url
    )

    if response.code == 200
      html = Nokogiri::HTML(response.body)
    else
      "Http Status: #{response.code}"
    end
    # this xpath should get us an array of urls of user gists: example: https://gist.github.com/joberding/3e408b8ec7ddb932ebef1b5b94a37255
    html.xpath('//*[@class="link-overlay"]').map {|node| node.values[1]}
  end

  def get_raw_gist_from_url(url)
    # example input url: https://gist.github.com/joberding/3e408b8ec7ddb932ebef1b5b94a37255
    # example output url: https://gist.githubusercontent.com/joberding/3e408b8ec7ddb932ebef1b5b94a37255/raw
  end

  def available_url_params
    {
      :recently_created => '?direction=desc&sort=created',
      :least_recently_created => '?direction=asc&sort=created',
      :recently_updated => '?direction=desc&sort=updated',
      :least_recently_updated => '?direction=asc&sort=updated'
    }
  end


end