fetch token introspection

Co-authored-by: François VANTOMME <akarzim@gmail.com>

app/lib/api_particulier/api.rb

@@ -0,0 +1,34 @@
+class APIParticulier::API
+  include APIParticulier::Error
+
+  INTROSPECT_RESOURCE_NAME = "introspect"
+
+  TIMEOUT = 20
+
+  def initialize(token)
+    @token = token
+  end
+
+  def scopes
+    get(INTROSPECT_RESOURCE_NAME)[:scopes]
+  end
+
+  private
+
+  def get(resource_name, params = {})
+    url = [API_PARTICULIER_URL, resource_name].join("/")
+
+    response = Typhoeus.get(url,
+      headers: { accept: "application/json", "X-API-Key": @token },
+      params: params,
+      timeout: TIMEOUT)
+
+    if response.success?
+      JSON.parse(response.body, symbolize_names: true)
+    elsif response.code == 401
+      raise Unauthorized.new(response)
+    else
+      raise RequestFailed.new(response)
+    end
+  end
+end

app/lib/api_particulier/error.rb

@@ -0,0 +1,32 @@
+module APIParticulier
+  module Error
+    class HttpError < ::StandardError
+      def initialize(response)
+        connect_time = response.connect_time
+        curl_message = response.return_message
+        http_error_code = response.code
+        datetime = response.headers.fetch('Date', DateTime.current.inspect)
+        total_time = response.total_time
+
+        uri = URI.parse(response.effective_url)
+        url = "#{uri.host}#{uri.path}"
+
+        msg = <<~TEXT
+          url: #{url}
+          HTTP error code: #{http_error_code}
+          #{response.body}
+          curl message: #{curl_message}
+          total time: #{total_time}
+          connect time: #{connect_time}
+          datetime: #{datetime}
+        TEXT
+
+        super(msg)
+      end
+    end
+
+    class RequestFailed < HttpError; end
+
+    class Unauthorized < HttpError; end
+  end
+end