require 'net/http'
require 'json'
require 'date'

module SbifRails
  module Base
    URL = 'https://api.sbif.cl/api-sbifv3/recursos_api'

    def api_key
      @api_key ||= SbifRails.config.api_key
    end

    def get_by_month(year, month)
      url = "#{URL}/#{name}/#{year.to_s}/#{month.to_s}?apikey=#{api_key}&formato=json"
      uri = URI.parse(url)
      http = Net::HTTP.new(uri.host, uri.port)

      # Activate SSL
      http.use_ssl = true
      http.verify_mode = OpenSSL::SSL::VERIFY_NONE

      request = Net::HTTP::Get.new(uri.request_uri)
      response = http.request(request)

      currencies_response = JSON.parse response.body
      currencies = Array.new
      currencies_response["#{plural_name}"].each do |currency|
        currency_date = currency['Fecha'].to_s.split('-')
        date = Date.new(currency_date[0].to_i, currency_date[1].to_i, currency_date[2].to_i)
        currencies << Currency.new(date, currency['Valor'].gsub('.', '').gsub(',', '.').to_f)
      end
      currencies
    end

    def get_by_year(year)
      url = "#{URL}/#{name}/#{year.to_s}?apikey=#{api_key}&formato=json"
      uri = URI.parse(url)
      http = Net::HTTP.new(uri.host, uri.port)

      # Activate SSL
      http.use_ssl = true
      http.verify_mode = OpenSSL::SSL::VERIFY_NONE

      request = Net::HTTP::Get.new(uri.request_uri)
      response = http.request(request)

      currencies_response = JSON.parse response.body
      currencies = Array.new
      currencies_response["#{plural_name}"].each do |currency|
        currency_date = currency['Fecha'].to_s.split('-')
        date = Date.new(currency_date[0].to_i, currency_date[1].to_i, currency_date[2].to_i)
        currencies << Currency.new(date, currency['Valor'].gsub('.', '').gsub(',', '.').to_f)
      end
      currencies
    end

    module GetByDayMethods
      def get_current
        today = Date.today
        get_by_day(today.year, today.month, today.day)
      end

      def get_by_day(year, month, day)
        date = Date.new(year, month, day)
        currencies_response = Array.new
        # looking for business day
        loop do
          url = "#{URL}/#{name}/#{date.year.to_s}/#{date.month.to_s}/dias/#{date.day}?apikey=#{api_key}&formato=json"
          uri = URI.parse(url)
          http = Net::HTTP.new(uri.host, uri.port)

          # Activate SSL
          http.use_ssl = true
          http.verify_mode = OpenSSL::SSL::VERIFY_NONE

          request = Net::HTTP::Get.new(uri.request_uri)
          response = http.request(request)

          currencies_response = JSON.parse response.body

          break if currencies_response["#{plural_name}"]
          date -= 1
        end
        Currency.new(date, currencies_response["#{plural_name}"][0]['Valor'].gsub('.', '').gsub(',', '.').to_f)
      end
    end
  end
end