onions: add onion service management

app/models/mirrors.py

@@ -1,5 +1,10 @@
+from typing import Optional
+
+from tldextract import extract
+
 from app import db
 from app.models import AbstractConfiguration, AbstractResource
+from app.models.onions import Onion
 
 
 class Origin(AbstractConfiguration):
@@ -23,6 +28,13 @@ class Origin(AbstractConfiguration):
         for proxy in self.proxies:
             proxy.destroy()
 
+    def onion(self) -> Optional[str]:
+        tld = extract(self.domain_name).registered_domain
+        onion = Onion.query.filter(Onion.domain_name == tld).first()
+        if not onion:
+            return None
+        return self.domain_name.replace(tld, f"{onion.onion_name}")
+
 
 class Proxy(AbstractResource):
     origin_id = db.Column(db.Integer, db.ForeignKey("origin.id"), nullable=False)