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121 lines
4.1 KiB
Ruby
121 lines
4.1 KiB
Ruby
require 'net/http/persistent'
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require 'aws-sigv4'
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module Paapi
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class Client
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attr_accessor :partner_tag, :marketplace, :resources, :condition
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attr_reader :partner_type, :access_key, :secret_key, :market, :http
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def initialize(access_key: Paapi.access_key,
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secret_key: Paapi.secret_key,
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partner_tag: Paapi.partner_tag,
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market: Paapi.market || DEFAULT_MARKET,
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condition: Paapi.condition || DEFAULT_CONDITION,
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resources: Paapi.resources || DEFAULT_RESOURCES,
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partner_type: DEFAULT_PARTNER_TYPE
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)
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raise ArgumentError unless MARKETPLACES.keys.include?(market.to_sym)
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@access_key = access_key
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@secret_key = secret_key
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@partner_type = partner_type
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@resources = resources unless resources.nil?
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@condition = condition
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self.market = market
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@partner_tag = partner_tag if !partner_tag.nil?
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@http = Net::HTTP::Persistent.new name: 'paapi'
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end
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def market=(a_market)
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@market = a_market
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@marketplace = MARKETPLACES[market.to_sym]
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if !Paapi.partner_market.nil?
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@partner_tag = Paapi.partner_market.dig(a_market.to_sym) || @partner_tag
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end
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end
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def get_items(item_ids:, **options)
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payload = { ItemIds: Array(item_ids), Resources: @resources }.merge(options)
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request(op: :get_items, payload: payload)
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end
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def get_variations(asin:, **options )
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payload = { ASIN: asin, Resources: @resources }.merge(options)
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request(op: :get_variations, payload: payload)
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end
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# TODO: Currently we assume Keywords, but we need one of the following: [Keywords Actor Artist Author Brand Title ]
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def search_items(keywords: nil, **options )
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raise ArgumentError("Missing keywords") unless (options.keys | SEARCH_PARAMS).length.positive?
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search_index = options.dig(:SearchIndex) ||'All'
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payload = { Keywords: keywords, Resources: @resources, ItemCount: 10, ItemPage: 1, SearchIndex: search_index }.merge(options)
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request(op: :search_items, payload: payload)
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end
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def get_browse_nodes(browse_node_ids:, **options)
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payload = { BrowseNodeIds: Array(browse_node_ids), Resources: @resources }.merge(options)
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request(op: :get_browse_nodes, payload: payload)
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end
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private
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def request(op:, payload:)
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raise ArguemntError unless Paapi::OPERATIONS.keys.include?(op)
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operation = OPERATIONS[op]
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headers = {
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'X-Amz-Target' => "com.amazon.paapi5.v1.ProductAdvertisingAPIv1.#{operation.target_name}",
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'Content-Encoding' => 'amz-1.0',
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}
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default_payload = {
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'Condition' => condition,
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'PartnerTag' => partner_tag,
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'PartnerType' => partner_type,
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'Marketplace' => marketplace.site
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}
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payload = default_payload.merge(payload)
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endpoint = "https://#{marketplace.host}/paapi5/#{operation.endpoint_suffix}"
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signer = Aws::Sigv4::Signer.new(
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service: operation.service,
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region: marketplace.region,
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access_key_id: access_key,
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secret_access_key: secret_key,
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http_method: operation.http_method,
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endpoint: marketplace.host
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)
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signature = signer.sign_request(http_method: operation.http_method, url: endpoint, headers: headers, body: payload.to_json)
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headers['Host'] = marketplace.host
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headers['X-Amz-Date'] = signature.headers['x-amz-date']
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headers['X-Amz-Content-Sha256']= signature.headers['x-amz-content-sha256']
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headers['Authorization'] = signature.headers['authorization']
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headers['Content-Type'] = 'application/json; charset=utf-8'
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Response.new( post(url: endpoint, body: payload, headers: headers))
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end
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def post(url:, body:, headers:)
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uri = URI.parse(url)
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post_request = Net::HTTP::Post.new(uri.path)
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post_request.content_type = 'application/json; charset=UTF-8'
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headers.each { |k, v| post_request[k] = v }
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post_request.body = body.to_json
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http.request uri, post_request
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end
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end
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end
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