add: educoder third party

app/libs/educoder_oauth.rb

@@ -0,0 +1,18 @@
+module EducoderOauth
+  class << self
+    attr_accessor :client_id, :client_secret, :base_url
+
+    def logger
+      @_logger ||= STDOUT
+    end
+
+    def logger=(l)
+      @_logger = l
+    end
+
+    def oauth_url(redirect_uri)
+      "#{base_url}/oauth2?call_url=/oauth/authorize?client_id=#{client_id}&redirect_uri=#{URI.encode_www_form_component(redirect_uri)}&response_type=code"
+    end
+    
+  end
+end

app/libs/educoder_oauth/service.rb

@@ -0,0 +1,37 @@
+require 'oauth2'
+
+module EducoderOauth::Service
+  module_function
+
+  def request(method, url, params)
+    begin 
+      Rails.logger.info("[EducoderOauth] [#{method.to_s.upcase}] #{url} || #{params}")
+
+      client = Faraday.new(url: EducoderOauth.base_url)
+      response = client.public_send(method, url, params)
+      result = JSON.parse(response.body)
+
+      Rails.logger.info("[EducoderOauth] [#{response.status}] #{result}")
+
+      result
+    rescue Exception => e
+      raise Educoder::TipException.new(e.message)
+    end
+  end
+
+  def access_token(code, redirect_uri)
+    begin
+      Rails.logger.info("[EducoderOauth] [code] #{code} ")
+      Rails.logger.info("[EducoderOauth] [redirect_uri] #{redirect_uri} ")
+      client = OAuth2::Client.new(EducoderOauth.client_id, EducoderOauth.client_secret, site: EducoderOauth.base_url)
+      result = client.auth_code.get_token(code, redirect_uri: redirect_uri).to_hash
+      return result
+    rescue Exception => e
+      raise Educoder::TipException.new(e.message)
+    end
+  end
+
+  def user_info(access_token)
+    request(:get, '/api/users/info.json', {access_token: access_token})
+  end
+end