require 'curb_core'
require 'curl/easy'
require 'curl/multi'
require 'uri'
require 'cgi'

# expose shortcut methods
module Curl
  
  def self.http(verb, url, post_body=nil, put_data=nil, &block)
    handle = Thread.current[:curb_curl] ||= Curl::Easy.new
    handle.reset
    handle.url = url
    handle.post_body = post_body if post_body
    handle.put_data = put_data if put_data
    yield handle if block_given?
    handle.http(verb)
    handle
  end

  def self.get(url, params={}, &block)
    http :GET, urlalize(url, params), nil, nil, &block
  end

  def self.post(url, params={}, &block)
    http :POST, url, postalize(params), nil, &block
  end

  def self.put(url, params={}, &block)
    http :PUT, url, nil, postalize(params), &block
  end

  def self.delete(url, params={}, &block)
    http :DELETE, url, postalize(params), nil, &block
  end

  def self.patch(url, params={}, &block)
    http :PATCH, url, postalize(params), nil, &block
  end

  def self.head(url, params={}, &block)
    http :HEAD, urlalize(url, params), nil, nil, &block
  end

  def self.options(url, params={}, &block)
    http :OPTIONS, urlalize(url, params), nil, nil, &block
  end

  def self.urlalize(url, params={})
    query_str = params.map {|k,v| "#{URI.escape(k.to_s)}=#{CGI.escape(v.to_s)}" }.join('&')
    if url.match(/\?/)
      "#{url}&#{query_str}"
    elsif query_str.size > 0
      "#{url}?#{query_str}"
    else
      url
    end
  end

  def self.postalize(params={})
    params.respond_to?(:map) ? URI.encode_www_form(params) : (params.respond_to?(:to_s) ? params.to_s : params)
  end

  def self.reset
    Thread.current[:curb_curl] = Curl::Easy.new
  end

end