sources: rename Sources::Strategies to Source::Extractor.

Rename Sources::Strategies to Source::Extractor. A Source::Extractor
represents a thing that extracts information from a given URL.

app/models/artist.rb

@@ -156,7 +156,7 @@ class Artist < ApplicationRecord
       end
 
       if source.present?
-        artist = Sources::Strategies.find(source).new_artist
+        artist = Source::Extractor.find(source).new_artist
         artist.attributes = params
       else
         artist = Artist.new(params)
@@ -252,7 +252,7 @@ class Artist < ApplicationRecord
       elsif query.include?("*")
         where(id: ArtistURL.where_like(:url, query).select(:artist_id))
       elsif query =~ %r{\Ahttps?://}i
-        url = Sources::Strategies.find(query).profile_url || query
+        url = Source::Extractor.find(query).profile_url || query
         ArtistFinder.find_artists(url)
       else
         where(id: ArtistURL.where_like(:url, "*#{query}*").select(:artist_id))

app/models/artist_url.rb

@@ -53,7 +53,7 @@ class ArtistURL < ApplicationRecord
     elsif url.include?("*")
       where_ilike(attr, url)
     else
-      profile_url = Sources::Strategies.find(url).profile_url || url
+      profile_url = Source::Extractor.find(url).profile_url || url
       where(attr => normalize_normalized_url(profile_url))
     end
   end

app/models/post.rb

@@ -87,7 +87,7 @@ class Post < ApplicationRecord
     )
 
     if add_artist_tag
-      tag_string = "#{tag_string} #{upload_media_asset.source_strategy&.artists.to_a.map(&:tag).map(&:name).join(" ")}".strip
+      tag_string = "#{tag_string} #{upload_media_asset.source_extractor&.artists.to_a.map(&:tag).map(&:name).join(" ")}".strip
       tag_string += " " if tag_string.present?
     end
 
@@ -1157,7 +1157,7 @@ class Post < ApplicationRecord
       self.pixiv_id = nil
       return unless web_source?
 
-      site = Sources::Strategies::Pixiv.new(source)
+      site = Source::Extractor::Pixiv.new(source)
       if site.match?
         self.pixiv_id = site.illust_id
       end
@@ -1265,7 +1265,7 @@ class Post < ApplicationRecord
       return if !web_source?
       return if has_tag?("artist_request") || has_tag?("official_art")
       return if tags.any?(&:artist?)
-      return if Sources::Strategies.find(source).is_a?(Sources::Strategies::Null)
+      return if Source::Extractor.find(source).is_a?(Source::Extractor::Null)
 
       new_artist_path = Routes.new_artist_path(artist: { source: source })
       warnings.add(:base, "Artist tag is required. \"Create new artist tag\":[#{new_artist_path}]. Ask on the forum if you need naming help")

app/models/upload.rb

@@ -117,8 +117,8 @@ class Upload < ApplicationRecord
         UploadMediaAsset.new(file: file.tempfile, source_url: "file://#{file.original_filename}")
       end
     elsif source.present?
-      page_url = source_strategy.page_url
-      image_urls = source_strategy.image_urls
+      page_url = source_extractor.page_url
+      image_urls = source_extractor.image_urls
 
       if image_urls.empty?
         raise Error, "#{source} doesn't contain any images"
@@ -136,14 +136,14 @@ class Upload < ApplicationRecord
     update!(status: "error", error: e.message)
   end
 
-  def source_strategy
+  def source_extractor
     return nil if source.blank?
-    Sources::Strategies.find(source, referer_url)
+    Source::Extractor.find(source, referer_url)
   end
 
   def self.available_includes
     [:uploader, :upload_media_assets, :media_assets, :posts]
   end
 
-  memoize :source_strategy
+  memoize :source_extractor
 end

app/models/upload_media_asset.rb

@@ -79,9 +79,9 @@ class UploadMediaAsset < ApplicationRecord
     end
   end
 
-  def source_strategy
+  def source_extractor
     return nil if source_url.blank?
-    Sources::Strategies.find(source_url, page_url)
+    Source::Extractor.find(source_url, page_url)
   end
 
   def async_process_upload!
@@ -98,7 +98,7 @@ class UploadMediaAsset < ApplicationRecord
     if file.present?
       media_file = MediaFile.open(file)
     else
-      media_file = source_strategy.download_file!(source_url)
+      media_file = source_extractor.download_file!(source_url)
     end
 
     MediaAsset.upload!(media_file) do |media_asset|
@@ -120,5 +120,5 @@ class UploadMediaAsset < ApplicationRecord
     end
   end
 
-  memoize :source_strategy
+  memoize :source_extractor
 end