module DistributionApi

# File lib/distribution-api-client.rb, line 29
def self.cancel_card(reference)
  req_params = { url: ("#{api_endpoint}/cards/#{URI::encode_www_form_component reference}/cancel"), method: :post, headers: { accept: :json }, payload: {} }
  req        = RestClient::Request.new(req_params)
  req.sign!(api_key, api_secret)
  req.execute
end

# File lib/distribution-api-client.rb, line 36
def self.card_url(reference)
  timestamp    = Time.now.utc.httpdate
  security     = Base64.strict_encode64(OpenSSL::HMAC.digest('sha256', api_secret, "#{reference}\n#{timestamp}"))
  query_string = {
      key:       api_key,
      timestamp: timestamp,
      reference: reference,
      security:  security
  }.map { |k, v| "#{k}=#{URI::encode_www_form_component(v)}" }.join('&')
  "#{api_endpoint}/widget?#{query_string}"
end

# File lib/distribution-api-client.rb, line 20
def self.create_card(reference, amount, currency, merchant_id, user)
  user       = user.to_json if user.is_a?(Hash)
  payload    = { amount: amount, currency: currency, merchant_id: merchant_id, reference: reference, user: user }
  req_params = { url: "#{api_endpoint}/cards", method: :post, headers: { accept: :json }, payload: payload }
  req        = RestClient::Request.new(req_params)
  req.sign!(api_key, api_secret)
  parse_response req.execute
end

# File lib/distribution-api-client.rb, line 14
def self.setup(api_key, api_secret, api_endpoint='https://distribution.api.wizypay.com/v1')
  self.api_endpoint   = api_endpoint
  self.api_key    = api_key
  self.api_secret = api_secret
end

# File lib/distribution-api-client.rb, line 50
def self.parse_response(response)
  Hash[JSON::parse(response).map { |k,v| [k.to_sym, v] }]
end