nijie: fix failure to fetch source data due to change in login system.

Nijie changed their login system so that now there are two cookies that
need to be remembered: NIJIEIJIEID, and nijie_tok.

app/logical/sources/strategies/nijie.rb

@@ -226,13 +226,14 @@ module Sources
 
       def client
         return nil if cached_session_cookie.nil?
-        http.cookies(NIJIEIJIEID: cached_session_cookie, R18: 1)
+        http.cookies(R18: 1, **cached_session_cookie)
       end
 
       def http
         super.timeout(60).use(retriable: { max_retries: 20 })
       end
 
+      # { "NIJIEIJIEID" => "5ca3f816c0c1f3e647940b08b8ab7a45", "nijie_tok" => <long-base64-string> }
       def cached_session_cookie
         Cache.get("nijie-session-cookie", 60.minutes, skip_nil: true) do
           session_cookie
@@ -258,7 +259,7 @@ module Sources
         response = http.post("https://nijie.info/login_int.php", form: form)
 
         if response.status == 200
-          response.cookies.select { |c| c.name == "NIJIEIJIEID" }.compact.first
+          response.cookies.cookies.map { |cookie| [cookie.name, cookie.value] }.to_h
         else
           DanbooruLogger.info "Nijie login failed (#{url}, #{response.status})"
           nil

test/unit/sources/nijie_test.rb

@@ -314,8 +314,8 @@ module Sources
       should "clear the cached cookie after failing to fetch the data" do
         site = Sources::Strategies.find("https://nijie.info/view.php?id=203688")
 
-        Cache.put("nijie-session-cookie", HTTP::Cookie.new(name: "NIJIEIJIEID", value: "fake", domain: "nijie.info", path: "/"))
-        assert_equal("fake", site.cached_session_cookie.value)
+        Cache.put("nijie-session-cookie", { "NIJIEIJIEID" => "fake", "nijie_tok" => "fake" })
+        assert_equal({ "NIJIEIJIEID" => "fake", "nijie_tok" => "fake" }, site.cached_session_cookie)
 
         assert_equal([], site.image_urls)
         assert_nil(Cache.get("nijie-session-cookie"))