Update readme

README.md

@@ -2,7 +2,7 @@
 
 `paapi` is a slim wrapper around [Amazon's Product Advertising API 5.0](https://webservices.amazon.com/paapi5/documentation/).
 
-This gem is under development and currently incomplete.
+This gem is under heavy development and currently incomplete.
 
 ## Installation
 
@@ -24,7 +24,7 @@ Or install it yourself as:
 
 ### Configuration
 
-The library can be initialised with a Rails initializer such as
+The library can be configured with an initializer. For Rails, create the file `config/initializers/paapi.rb`
 
 ```ruby
 Paapi.configure do |config|

lib/paapi.rb

@@ -81,4 +81,9 @@ module Paapi
     end
     alias_method :config, :configure
   end
+
+  def symbolize_keys(hash)
+    Hash[hash.map{|k,v| v.is_a?(Hash) ? [k.to_sym, symbolize_keys(v)] : [k.to_sym, v] }]
+  end
 end
+

lib/paapi/client.rb

@@ -36,20 +36,25 @@ module Paapi
 
       res = do_request(op: :get_items, payload: payload)
 
-      Response.new(res)
+      # Errors, ItemResults -> Items -> Item
+      return Response.new(res)
     end
 
     def get_variations(asin:, **options )
       payload = { ASIN: asin, Resources:  @resources }
 
       res = do_request(op: :get_variations, payload: payload)
-      Response.new(res)
+      
+      # Errors, VariationsResult->Items
+       Response.new(res)
     end
 
-    def search_items(keywords:, **options )
-      search_index = 'All'
 
-      # %i[Keywords Actor Artist Author Brand Title ]
+    # TODO: Currently we assume Keywords, but we need one of the follow: [Keywords Actor Artist Author Brand Title ]
+    def search_items(keywords: nil, **options )
+      raise ArgumentError("Missing keywords") unless (options.keys | SEARCH_PARAMS).length.positive?
+
+      search_index = options.dig(:SearchIndex) ||'All'
 
       payload = { Keywords: keywords, Resources:  @resources, ItemCount: 10, ItemPage: 1, SearchIndex: search_index }.merge(options)
 

lib/paapi/item.rb

@@ -1,3 +1,5 @@
+require 'nameable'
+
 module Paapi
   class Item
     attr_accessor :raw
@@ -21,12 +23,50 @@ module Paapi
       get(%w{ItemInfo Title DisplayValue})
     end
     
+    def manufacturer
+      get(%w{ItemInfo ByLineInfo Manufacturer DisplayValue})
+    end
+    
+    def publisher
+      manufacturer
+    end
+    
+    def publication_date
+      d = get(%w{ItemInfo ContentInfo PublicationDate DisplayValue})
+      return d.nil? ? nil : Date.parse(d)
+    end
+    
+    def release_date
+      d = get(%w{ItemInfo ProductInfo ReleaseDate DisplayValue})
+      return d.nil? ? nil : Date.parse(d)
+    end
+
     def contributors
       get(%w{ItemInfo ByLineInfo Contributors})
     end
     
+    def contributors_of(kind)
+      contributors&.select { |e| e['Role'] == kind }&.map { |e| Nameable(e['Name'])}
+    end
+    
     def authors
-      a = contributors.select { |e| e['Role'] == 'Author' }.map { |e| Nameable(e['Name'])}
+      contributors_of 'Author'
+    end
+    
+    def illustrators
+      contributors_of 'Illustrator'
+    end
+    
+    def actors
+      contributors_of 'Actor'
+    end
+
+    def narrators
+      contributors_of 'Narrator'
+    end
+    
+    def publishers
+      contributors_of 'Publisher' 
     end
 
     def release_date
@@ -45,6 +85,10 @@ module Paapi
       get(%w{ItemInfo Features DisplayValues})&.join(' ')
     end
     
+    def brand
+      get(%w{ItemInfo ByLineInfo Brand DisplayValue})
+    end
+
     def part_number
       get(%w{ItemInfo ManufactureInfo ItemPartNumber DisplayValue})
     end
@@ -61,5 +105,9 @@ module Paapi
       @raw.dig(*keys)
     end
     
+    def self.to_items(data)
+      data.map {|d| Item.new(d)}
+    end
+    
   end
 end

lib/paapi/response.rb

@@ -2,10 +2,41 @@ require 'json'
 
 module Paapi
   class Response
-    attr_reader :http_response, :data
+    attr_reader :http_response, :data, :datas, :doc, :items
+
     def initialize(response)
       @http_response = response
-      @data = JSON.parse( response.body.to_s )
+      @data = JSON.parse(response.body.to_s)
+      
+      @datas = symbolise(JSON.parse(response.body.to_s))
+      @doc  = JSON.parse(@datas.to_json, object_class: OpenStruct)
+
+      @items_data = @data.dig('ItemsResult', 'Items')
+      @items_data ||= @data.dig('SearchResult', 'Items')
+      @items_data ||= []
+      
+      @items = @items_data.map {|d| Item.new(d)}
+
     end
+  
+    def snake_case(s)
+      return s.downcase if s.match(/\A[A-Z]+\z/)
+      s.gsub(/([A-Z]+)([A-Z][a-z])/, '\1_\2').
+      gsub(/([a-z])([A-Z])/, '\1_\2').
+      downcase
+    end
+    
+    def symbolise(obj)
+      if obj.is_a? Hash
+        return obj.inject({}) do |memo, (k, v)|
+          memo.tap { |m| m[snake_case(k)] = symbolise(v) }
+        end
+      elsif obj.is_a? Array
+        return obj.map { |memo| symbolise(memo) }
+      end
+      obj
+    end
+
+    
   end
 end

lib/paapi/version.rb

@@ -1,3 +1,3 @@
 module Paapi
-  VERSION = '0.0.2'
+  VERSION = '0.0.3'
 end