Extract a repeated code into a private method to reduce duplication

- Thus I'm not making fetch_info calls fetch_raw_info or vice-versa. Reasons: the benefit is small, we may mix concerns and hinder future reuses.

Author: thicolares

lib/meilisearch/index.rb

@@ -15,28 +15,29 @@ def initialize(index_uid, url, api_key = nil, primary_key = nil, options = {})
 
     def fetch_info
       index_hash = http_get "/indexes/#{@uid}"
-      @primary_key = index_hash['primaryKey']
-      @created_at = Time.parse(index_hash['createdAt'])
-      @updated_at = Time.parse(index_hash['updatedAt'])
+      set_base_properties index_hash
       self
     end
 
     def fetch_raw_info
       index_hash = http_get "/indexes/#{@uid}"
-      @primary_key = index_hash['primaryKey']
-      @created_at = Time.parse(index_hash['createdAt'])
-      @updated_at = Time.parse(index_hash['updatedAt'])
+      set_base_properties index_hash
       index_hash
     end
 
     def update(body)
       index_hash = http_put "/indexes/#{@uid}", body
+      set_base_properties index_hash
+      self
+    end
+    alias update_index update
+
+    def set_base_properties(index_hash)
       @primary_key = index_hash['primaryKey']
       @created_at = Time.parse(index_hash['createdAt'])
       @updated_at = Time.parse(index_hash['updatedAt'])
-      self
     end
-    alias update_index update
+    private :set_base_properties
 
     def delete
       http_delete "/indexes/#{@uid}"