vk_api.rb

vk_api.rb

#!/usr/bin/env ruby
# encode: utf-8
# Vkontakte api class

require 'digest/md5'
require 'json'
require 'rest_client'

class API
  attr_reader :app_id, :app_secret

  def initialize options = {}
    @app_id = options[:app_id]
    @app_secret = options[:app_secret]
  end

  def sig params
    params.merge!({
      api_id: @app_id,
      format: 'json',
      rnd: rand(1000),
      timestamp: Time.now.to_i,
      v: '3.0',
    })

    _sig = Digest::MD5.hexdigest params.keys.sort.map { |key|
      "#{key}=#{params[key]}"
    }.join + @app_secret

    params[:sig] = _sig

    params
  end

  def method_missing method, *args, &block
    response = JSON::parse(
      RestClient.post(
        'http://api.vk.com/api.php',
        sig(args.first.merge method: method.to_s)
      )
    )

    raise 'ServerError', response['error'] if response['error']

    if block
      yield response['response']
    else
      response['response']
    end
  end
end

# Example
api = API.new app_id: '222222222', app_secret: '722222222222'
api.getProfiles uids: (1..1000).to_a.join(','), fields: 'uid, first_name' do |req|
  puts req.map { |item| item['uid'] }.join ', '
end