Use safe operator

lib/paapi/client.rb

@@ -44,7 +44,7 @@ module Paapi
       request(op: :get_variations, payload: payload)
     end
 
-    # TODO: Currently we assume Keywords, but we need one of the follow: [Keywords Actor Artist Author Brand Title ]
+    # TODO: Currently we assume Keywords, but we need one of the following: [Keywords Actor Artist Author Brand Title ]
     def search_items(keywords: nil, **options )
       raise ArgumentError("Missing keywords") unless (options.keys | SEARCH_PARAMS).length.positive?
 
@@ -99,8 +99,14 @@ module Paapi
       headers['X-Amz-Content-Sha256']= signature.headers['x-amz-content-sha256']
       headers['Authorization'] = signature.headers['authorization']
       headers['Content-Type'] = 'application/json; charset=utf-8'
-
-      Response.new( Client.post(url: endpoint, body: payload, headers: headers))
+      
+      if defined?(HTTP)
+        Response.new( HTTP.headers(headers).post(endpoint, json: payload ) )
+      else
+        Response.new( Client.post(url: endpoint, body: payload, headers: headers))
+      end
+      
+      Response.new(@http_client.headers(headers))
     end
 
     def self.post(url:, body:, headers:)

lib/paapi/item.rb

@@ -128,22 +128,22 @@ module Paapi
 
     def height
       data = get(%w{ItemInfo ProductInfo ItemDimensions Height})
-      [data.dig('DisplayValue'), data.dig('Unit')].join(' ')
+      [data&.dig('DisplayValue'), data.dig('Unit')].join(' ')
     end
 
     def length
       data = get(%w{ItemInfo ProductInfo ItemDimensions Length})
-      [data.dig('DisplayValue'), data.dig('Unit')].join(' ')
+      [data&.dig('DisplayValue'), data.dig('Unit')].join(' ')
     end
 
     def width
       data = get(%w{ItemInfo ProductInfo ItemDimensions Width})
-      [data.dig('DisplayValue'), data.dig('Unit')].join(' ')
+      [data&.dig('DisplayValue'), data.dig('Unit')].join(' ')
     end
 
     def weight
       data = get(%w{ItemInfo ProductInfo ItemDimensions Weight})
-      [data.dig('DisplayValue'), data.dig('Unit')].join(' ')
+      [data&.dig('DisplayValue'), data.dig('Unit')].join(' ')
     end
 
     def kindle?

lib/paapi/version.rb

@@ -1,3 +1,3 @@
 module Paapi
-  VERSION = '0.1.2'
+  VERSION = '0.1.4'
 end