Refactor source normalization

* Move the source normalization logic out of the post model
  and into individual sources' strategies.
* Rewrite normalization tests to be handled into each source's test,
  and expand them significantly. Previously we were only testing
  a very small subset of domains and variants.
* Fix up normalization for several sites.
* Normalize fav.me urls into normal deviantart urls.

app/logical/sources/strategies/pawoo.rb

@@ -1,6 +1,28 @@
+# Image URLS:
+# * https://img.pawoo.net/media_attachments/files/001/297/997/small/c4272a09570757c2.png
+# * https://img.pawoo.net/media_attachments/files/001/297/997/original/c4272a09570757c2.png
+# * https://pawoo.net/media/lU2uV7C1MMQSb1czwvg
+#
+# Page URLS:
+# * https://pawoo.net/@evazion/19451018
+# * https://pawoo.net/web/statuses/19451018
+#
+# Account URLS:
+# * https://pawoo.net/@evazion
+# * https://pawoo.net/web/accounts/47806
+#
+# OAUTH URLS: (NOTE: ID IS DIFFERENT FROM ACCOUNT URL ID)
+# * https://pawoo.net/oauth_authentications/17230064
+
 module Sources::Strategies
   class Pawoo < Base
+    HOST = %r!\Ahttps?://(www\.)?pawoo\.net!i
     IMAGE = %r!\Ahttps?://img\.pawoo\.net/media_attachments/files/(\d+/\d+/\d+)!
+    NAMED_PROFILE = %r!#{HOST}/@(?<artist_name>\w+)!i
+    ID_PROFILE = %r!#{HOST}/web/accounts/(?<artist_id>\d+)!
+
+    STATUS1 = %r!\A#{HOST}/web/statuses/(?<status_id>\d+)!
+    STATUS2 = %r!\A#{NAMED_PROFILE}/(?<status_id>\d+)!
 
     def domains
       ["pawoo.net"]
@@ -14,9 +36,6 @@ module Sources::Strategies
       image_urls.first
     end
 
-    # https://img.pawoo.net/media_attachments/files/001/297/997/small/c4272a09570757c2.png
-    # https://img.pawoo.net/media_attachments/files/001/297/997/original/c4272a09570757c2.png
-    # https://pawoo.net/media/lU2uV7C1MMQSb1czwvg
     def image_urls
       if url =~ %r!#{IMAGE}/small/([a-z0-9]+\.\w+)\z!i
         return ["https://img.pawoo.net/media_attachments/files/#{$1}/original/#{$2}"]
@@ -29,8 +48,6 @@ module Sources::Strategies
       return api_response.image_urls
     end
 
-    # https://pawoo.net/@evazion/19451018
-    # https://pawoo.net/web/statuses/19451018
     def page_url
       [url, referer_url].each do |x|
         if PawooApiClient::Status.is_match?(x)
@@ -41,8 +58,6 @@ module Sources::Strategies
       return super
     end
 
-    # https://pawoo.net/@evazion
-    # https://pawoo.net/web/accounts/47806
     def profile_url
       if url =~ PawooApiClient::PROFILE2
         return "https://pawoo.net/@#{$1}"
@@ -56,6 +71,22 @@ module Sources::Strategies
       api_response.account_name
     end
 
+    def artist_name_from_url
+      if url =~ NAMED_PROFILE
+        url[NAMED_PROFILE, :artist_name]
+      end
+    end
+
+    def artist_id_from_url
+      if url =~ ID_PROFILE
+        url[ID_PROFILE, :artist_name]
+      end
+    end
+
+    def status_id_from_url
+      urls.map { |url| url[STATUS1, :status_id] || url[STATUS2, :status_id] }.compact.first
+    end
+
     def artist_commentary_title
       nil
     end
@@ -76,6 +107,18 @@ module Sources::Strategies
       profile_url
     end
 
+    def normalize_for_source
+      artist_name = artist_name_from_url
+      status_id = status_id_from_url
+      return unless status_id.present?
+
+      if artist_name.present?
+        "https://pawoo.net/@#{artist_name}/#{status_id}"
+      else
+        "https://pawoo.net/web/statuses/#{status_id}"
+      end
+    end
+
     def dtext_artist_commentary_desc
       DText.from_html(artist_commentary_desc) do |element|
         if element.name == "a"