Add read-only NAS and WebDAV photo sources with random scheduling

pigway_frame_flow/renderers/images.py

@@ -114,7 +114,10 @@ class Assets:
             raise FlowError(E.INVALID_REQUEST, "Image exceeds 20 MiB")
         return data
 
-    def fetch_url(self, url):
+    def fetch_url(
+        self, url, *, method="GET", headers=None, limit=None, accepted_status=(200,)
+    ):
+        limit = limit or self.settings.max_bytes
         parsed = urlsplit(url)
         if (
             parsed.scheme != "https"
@@ -153,16 +156,17 @@ class Assets:
             connection = PinnedHTTPS(parsed.hostname, timeout=10)
             try:
                 connection.request(
-                    "GET",
+                    method,
                     (parsed.path or "/") + ("?" + parsed.query if parsed.query else ""),
+                    headers=headers or {},
                 )
                 response = connection.getresponse()
-                if response.status != 200:
+                if response.status not in accepted_status:
                     raise FlowError(
                         E.INVALID_REQUEST, "Image URL returned an invalid response"
                     )
-                data = response.read(self.settings.max_bytes + 1)
-                if len(data) > self.settings.max_bytes:
+                data = response.read(limit + 1)
+                if len(data) > limit:
                     raise FlowError(E.INVALID_REQUEST, "Image exceeds 20 MiB")
                 return data
             finally: