module One45

# File lib/one45.rb, line 40
def api_url
  "https://#{One45.api_host}/web/one45_stage.php/api/v1"
end

# File lib/one45.rb, line 28
def generate_token(client_key, client_secret)
  params = { params: { client_key: client_key, client_secret: client_secret} }
  begin
    response = RestClient.get(token_url, params)
    @access_token = JSON.parse(response)['access_token']
    # puts "generated access_token: #{@access_token}"
    @access_token
  rescue => e
    One45Error.new("#{e.class} - #{e.response}")
  end
end

# File lib/one45.rb, line 44
def token_url
  "https://#{One45.api_host}/web/one45_stage.php/api/token/generate"
end

# File lib/one45.rb, line 95
def default_headers
  { 'Content-Type' => "application/json",
    'Accept' => "application/json" }
end

# File lib/one45.rb, line 87
def format_body_params(options, access_token)
  # insert access_token in the original hash
  token_hash = { access_token: access_token }
  options.merge! token_hash
  # nest options under the key 'params'
  params = { params: options }
end

# File lib/one45.rb, line 62
def send_request(verb, path, options = {})
  validate_configuration

  url = path.start_with?('http') ? path : api_url + "/#{path}"

  url = URI::encode(url)

  params = format_body_params(options, @access_token) if @access_token

  begin
    response = RestClient.send(verb, url, params)
  rescue RestClient::Unauthorized
    # token may be expired or nil
    # submit request again with a fresh token
    @access_token = generate_token(@client_key, @client_secret)
    params = format_body_params(options, @access_token)
    response = RestClient.send(verb, url, params)
  rescue => e
    One45Error.new("error: #{e.class} : #{e.response} : #{e.response}")
  end

  JSON.parse response if response && response.length >= 2
  # http://stackoverflow.com/questions/8390256/a-json-text-must-at-least-contain-two-octets
end

# File lib/one45.rb, line 56
def validate_configuration
  [@api_host, @client_key, @client_secret].each do |config|
    raise One45Error.new("api_host, client_key or client_secret not set") if config.nil?
  end
end