class JumpCloud

# File lib/jumpcloud.rb, line 35
def self.create_signature(verb, date, system_key)
  signed_string = "#{verb} /api/systems/#{system_key} HTTP/1.1\ndate: #{date}"
  key = OpenSSL::PKey::RSA.new(File.open("/opt/jc/client.key"))
  Base64.strict_encode64(key.sign(OpenSSL::Digest::SHA256.new, signed_string))
end

# File lib/jumpcloud.rb, line 59
def self.delete_system()
  date = get_date
  system_key = get_key_from_config
  signature = create_signature("DELETE", date, system_key)
  uri = URI.parse("https://console.jumpcloud.com/api/systems/#{system_key}")
  request = Net::HTTP::Delete.new(uri.request_uri)
  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = true
  request["Authorization"] = "Signature keyId=\"system/#{system_key}\",headers=\"request-line date\",algorithm=\"rsa-sha256\",signature=\"#{signature}\""
  request["Date"] = "#{date}"
  request["accept"] = "application/json"
  request["Content-Type"] = "application/json"
  response = http.request(request)
end

# File lib/jumpcloud.rb, line 23
def self.get_date
  Time.now.utc.strftime("+%a, %d %h %Y %H:%M:%S GMT")
end

# File lib/jumpcloud.rb, line 31
def self.get_key_from_config
  parse_config["systemKey"]
end

# File lib/jumpcloud.rb, line 74
def self.get_system_data()
  date = get_date
  system_key = get_key_from_config
  signature = create_signature("GET", date, system_key)
  uri = URI.parse("https://console.jumpcloud.com/api/systems/#{system_key}")
  request = Net::HTTP.new(uri.host, uri.port)
  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = true
  request = Net::HTTP::Get.new(uri.request_uri)
  request["Authorization"] = "Signature keyId=\"system/#{system_key}\",headers=\"request-line date\",algorithm=\"rsa-sha256\",signature=\"#{signature}\""
  request["Date"] = "#{date}"
  request["accept"] = "application/json"

  response = http.request(request)
  return JSON.parse(response.body)
end

# File lib/jumpcloud.rb, line 10
def initialize(args=self.class.get_system_data())
  @settings = args
end

# File lib/jumpcloud.rb, line 27
def self.parse_config
  JSON.parse( IO.read("/opt/jc/jcagent.conf") )
end

# File lib/jumpcloud.rb, line 91
def self.send_to_server(data)
  date = get_date
  system_key = get_key_from_config
  signature = create_signature("PUT", date, system_key)
  uri = URI.parse("https://console.jumpcloud.com/api/systems/#{system_key}")
  request = Net::HTTP::Put.new(uri.request_uri)
  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = true
  request["Authorization"] = "Signature keyId=\"system/#{system_key}\",headers=\"request-line date\",algorithm=\"rsa-sha256\",signature=\"#{signature}\""
  request["Date"] = "#{date}"
  request["accept"] = "application/json"
  request["Content-Type"] = "application/json"
  request.body = JSON.generate(data)
  response = http.request(request)
end

# File lib/jumpcloud.rb, line 53
def self.set_sshPassEnabled()
  system_data = get_system_data()
  system_data["allowSshPasswordAuthentication"] = true
  send_to_server(system_data)
end

# File lib/jumpcloud.rb, line 47
def self.set_system_name(system_name)
  system_data = get_system_data()
  system_data["displayName"] = system_name
  send_to_server(system_data)
end

# File lib/jumpcloud.rb, line 41
def self.set_system_tags(*tags)
  system_data = get_system_data()
  system_data["tags"] = tags
  send_to_server(system_data)
end

# File lib/jumpcloud.rb, line 14
def update_settings(options)
  data = {}
  data.merge!(@settings) 
  options.each do |k,v|
    data[k] = v if @settings.has_key?(k) 
  end
  JumpCloud.send_to_server(data)
end