added chainable module, a la http gem

lib/httpx.rb

@@ -12,6 +12,7 @@ require "httpx/connection"
 require "httpx/headers"
 require "httpx/request"
 require "httpx/response"
+require "httpx/chainable"
 require "httpx/client"
 
 module HTTPX
@@ -40,4 +41,5 @@ module HTTPX
     end
   end
 
+  extend Chainable
 end

lib/httpx/chainable.rb

@@ -0,0 +1,69 @@
+# frozen_string_literal: true
+
+module HTTPX
+  module Chainable
+    def head(uri, **options)
+      request(:head, uri, **options)
+    end
+
+    def get(uri, **options)
+      request(:get, uri, **options)
+    end
+
+    def post(uri, **options)
+      request(:post, uri, **options)
+    end
+
+    def put(uri, **options)
+      request(:put, uri, **options)
+    end
+
+    def delete(uri, **options)
+      request(:delete, uri, **options)
+    end
+
+    def trace(uri, **options)
+      request(:trace, uri, **options)
+    end
+
+    def options(uri, **options)
+      request(:options, uri, **options)
+    end
+
+    def connect(uri, **options)
+      request(:connect, uri, **options)
+    end
+
+    def patch(uri, **options)
+      request(:patch, uri, **options)
+    end
+
+    def request(verb, uri, **options)
+      branch(**options).request(verb, uri)
+    end
+
+    def timeout(klass, **options)
+      branch(timeout: Timeout.by(klass, **options))
+    end
+
+    def headers(headers)
+      branch(default_options.with_headers(headers))
+    end
+
+    def encoding(encoding)
+      branch(default_options.with_encoding(encoding))
+    end
+
+    def accept(type)
+      headers("accept" => String(type)) 
+    end
+
+    private
+
+    # :nodoc:
+    def branch(options)
+      Client.new(options)
+    end
+  end
+end
+

lib/httpx/client.rb

@@ -2,6 +2,8 @@
 
 module HTTPX
   class Client
+    include Chainable
+
     def initialize(**options)
       @default_options = self.class.default_options.merge(options) 
       @connection = Connection.new(@default_options)