require 'sinatra/shopify-sinatra-app'

class SinatraApp < Sinatra::Base
  register Sinatra::Shopify

  # set the scope that your app needs, read more here:
  # http://docs.shopify.com/api/tutorials/oauth
  set :scope, 'read_products, read_orders'

  # Your App's Home page
  # this is a simple example that fetches some products
  # from Shopify and displays them inside your app
  get '/' do
    shopify_session do
      @products = ShopifyAPI::Product.all
      erb :home
    end
  end

  # this endpoint recieves the uninstall webhook
  # and cleans up data, add to this endpoint as your app
  # stores more data.
  post '/uninstall' do
    webhook_session do |params|
      shop.destroy
    end
  end

  private

  # This method gets called when your app is installed.
  # setup any webhooks or services you need on Shopify
  # inside here.
  def install
    shopify_session do
      # create an uninstall webhook, this webhook gets sent
      # when your app is uninstalled from a shop. It is good
      # practice to clean up any data from a shop when they
      # uninstall your app.
      uninstall_webhook = ShopifyAPI::Webhook.new({
        topic: "app/uninstalled",
        address: "#{base_url}/uninstall",
        format: "json"
      })
      uninstall_webhook.save
    end

    redirect '/'
  end

end