require_relative './errors'

module Ralyxa
  class Card
    LINK_ACCOUNT_CARD_TYPE = "LinkAccount"
    SIMPLE_CARD_TYPE       = "Simple"
    STANDARD_CARD_TYPE     = "Standard"

    def initialize(options)
      @options = options
    end

    def self.as_hash(title, body, image_url = nil)
      new(title: title, body: body, image_url: image_url).to_h
    end

    def self.link_account
      new(link_account: true).to_h
    end

    def to_h
      Hash.new.tap do |card|
        set_type(card)
        set_title(card) if @options[:title]
        set_body(card)  if @options[:body]
        set_image(card) if @options[:image_url]
      end
    end

    private

    def set_type(card)
      return card[:type] = LINK_ACCOUNT_CARD_TYPE if link_account?
      card[:type]        = SIMPLE_CARD_TYPE       if simple?
      card[:type]        = STANDARD_CARD_TYPE     if standard?
    end

    def set_title(card)
      card[:title] = @options[:title]
    end

    def set_body(card)
      card[:content] = @options[:body] if simple?
      card[:text]    = @options[:body] if standard?
    end

    def set_image(card)
      raise UnsecureUrlError.new("Card images must be available at an SSL-enabled (HTTPS) endpoint. Your current image url is: #{ @options[:image_url] }") unless secure?
      card[:image] = Hash.new
      card[:image][:smallImageUrl] = @options[:image_url]
      card[:image][:largeImageUrl] = @options[:image_url]
    end

    def link_account?
      !!@options[:link_account]
    end

    def simple?
      !@options[:image_url]
    end

    def standard?
      !!@options[:image_url]
    end

    def secure?
      URI.parse(@options[:image_url]).scheme == "https"
    end
  end
end