Fix #3906: Moebooru strategy raises NotImplementedError.

app/logical/sources/strategies/base.rb

@@ -43,8 +43,14 @@ module Sources
         @referer_url = referer_url
       end
 
+      def urls
+        [url, referer_url].select(&:present?)
+      end
+
       def site_name
-        raise NotImplementedError
+        Addressable::URI.heuristic_parse(url).host
+      rescue Addressable::URI::InvalidURIError => e
+        nil
       end
 
       # Whatever <tt>url</tt> is, this method should return the direct links 

app/logical/sources/strategies/moebooru.rb

@@ -1,24 +1,28 @@
 module Sources
   module Strategies
     class Moebooru < Base
-      DOMAINS = /(?:[^.]+\.)?yande\.re|konachan\.com/
+      BASE_URL = %r!\Ahttps?://(?:[^.]+\.)?(?<domain>yande\.re|konachan\.com)!i
 
       def self.match?(*urls)
-        urls.compact.any? { |x| x.match?(DOMAINS) }
+        urls.compact.any? { |x| x.match?(BASE_URL) }
       end
 
       def site_name
-        URI.parse(url).host
+        urls.map { |url| url[BASE_URL, :domain] }.compact.first
       end
 
       def image_url
-        if url =~ %r{\A(https?://(?:#{DOMAINS}))/jpeg/([a-f0-9]+(?:/.*)?)\.jpg\Z}
-          return $1 + "/image/" + $2 + ".png"
+        if url =~ %r{\A(?<base>#{BASE_URL})/jpeg/(?<md5>\h+(?:/.*)?)\.jpg\Z}
+          return $~[:base] + "/image/" + $~[:md5] + ".png"
         end
 
         return url
       end
 
+      def image_urls
+        [image_url]
+      end
+
       def page_url
         return url
       end

app/logical/sources/strategies/null.rb

@@ -29,12 +29,6 @@ module Sources
         url
       end
 
-      def site_name
-        URI.parse(url).hostname || "N/A"
-      rescue
-        "N/A"
-      end
-
       def unique_id
         url
       end

test/unit/sources/moebooru_test.rb

@@ -2,12 +2,23 @@ require "test_helper"
 
 module Sources
   class MoebooruTest < ActiveSupport::TestCase
-    context "downloading a 'https://yande.re/jpeg/:hash/:file.jpg' jpeg sample url" do
-      should "download the original file" do
-        @source = "https://yande.re/jpeg/2c6876ac2317fce617e3c5f1a642123b/yande.re%20292092%20hatsune_miku%20tid%20vocaloid.jpg"
-        @rewrite = "https://yande.re/image/2c6876ac2317fce617e3c5f1a642123b/yande.re%20292092%20hatsune_miku%20tid%20vocaloid.png"
-        assert_rewritten(@rewrite, @source)
-        assert_downloaded(1_050_117, @source)
+    context "Yande.re:" do
+      context "A 'https://yande.re/jpeg/:hash/:file.jpg' jpeg sample url" do
+        should "download the original file" do
+          @source = "https://yande.re/jpeg/2c6876ac2317fce617e3c5f1a642123b/yande.re%20292092%20hatsune_miku%20tid%20vocaloid.jpg"
+          @rewrite = "https://yande.re/image/2c6876ac2317fce617e3c5f1a642123b/yande.re%20292092%20hatsune_miku%20tid%20vocaloid.png"
+          assert_rewritten(@rewrite, @source)
+          assert_downloaded(1_050_117, @source)
+        end
+      end
+
+      context "A 'https://files.yande.re/sample/:hash/:file.jpg' sample url" do
+        should "work" do
+          @site = Sources::Strategies.find("https://files.yande.re/sample/7ecfdead705d7b956b26b1d37b98d089/yande.re%20482880%20sample%20bayashiko%20journey_to_the_west%20sun_wukong.jpg")
+
+          assert_equal("yande.re", @site.site_name)
+          assert_nothing_raised { @site.to_h }
+        end
       end
     end
   end