module Wbase
  class StartSubscription
    attr_reader :subscription, :user, :errors

    def initialize(user, params)
      @params = params
      @user = user
      @subscription = build_subscription
      @errors = []
    end

    def call
      customer = create_stripe_customer
      if customer && customer.id
        @subscription.stripe_id = customer.id
        @subscription.user = user
        @subscription.save!
      else
        @errors << 'Invalid card'
      end
    end

    def valid?
      errors.empty?
    end

    def build_subscription
      Rails.logger.info "Building new subscription for #{ user.email }"
      Wbase::Subscription.new(@params) do |s|
        s.user = user
        s.current_price = s.plan.price
        s.paid_thru = 30.days.from_now
      end
    end

    def create_stripe_customer
      Rails.logger.info "Creating Stripe Customer for #{ user.email }"
      begin
        customer = Stripe::Customer.create(
          :source => subscription.credit_card_token,
          :plan => subscription.plan.stripe_id,
          :email => user.email
        )
        Rails.logger.info customer
      rescue Stripe::CardError => e
        # Since it's a decline, Stripe::CardError will be caught
        body = e.json_body
        err  = body[:error]
        @errors << body[:error]

        puts "Status is: #{e.http_status}"
        puts "Type is: #{err[:type]}"
        puts "Code is: #{err[:code]}"
        # param is '' in this case
        puts "Param is: #{err[:param]}"
        puts "Message is: #{err[:message]}"
      rescue Stripe::RateLimitError => e
        # Too many requests made to the API too quickly
        Rails.logger.error e
      rescue Stripe::InvalidRequestError => e
        # Invalid parameters were supplied to Stripe's API
        Rails.logger.error e
      rescue Stripe::AuthenticationError => e
        # Authentication with Stripe's API failed
        # (maybe you changed API keys recently)
        Rails.logger.error e
      rescue Stripe::APIConnectionError => e
        # Network communication with Stripe failed
        Rails.logger.error e
      rescue Stripe::StripeError => e
        # Display a very generic error to the user, and maybe send
        # yourself an email
        Rails.logger.error e
      rescue => e
        # Something else happened, completely unrelated to Stripe
        Rails.logger.error e
      end
      customer
    end
  end
end