refactor: remove core/ folder

src/network/direct_download/utils.py

@@ -0,0 +1,49 @@
+from utils.logging.logs import consoleLog
+from urllib.parse import urlparse, unquote
+from typing import Optional
+import requests
+import os
+
+def sanitize_filename(name: str) -> str:
+    # Remove or replace dangerous characters
+    keepchars = (" ", ".", "_", "-")
+    cleaned = "".join(c for c in name if c.isalnum() or c in keepchars).strip()
+    while "  " in cleaned:
+        cleaned = cleaned.replace("  ", " ")
+    return cleaned or "download"
+
+
+def extract_filename_from_url(url: str) -> Optional[str]:
+    parsed = urlparse(url)
+    path = unquote(parsed.path)
+    basename = os.path.basename(path)
+    if basename and "." in basename and len(basename) < 256:
+        return basename
+    return None
+
+
+def detect_filename_from_headers(url: str, user_agent: str) -> Optional[str]:
+    try:
+        resp = requests.head(
+            url,
+            headers={"User-Agent": user_agent},
+            allow_redirects=True,
+            timeout=15,
+        )
+        cd = resp.headers.get("content-disposition", "")
+        if "filename=" in cd:
+            parts = cd.split("filename=")
+            if len(parts) > 1:
+                fname = parts[-1].strip().strip('"').strip("'")
+                if fname:
+                    return fname
+    except Exception as e:
+        consoleLog(f"Exception while retrieving filename from headers: {e}")
+    return None
+
+def format_size(size_bytes: int) -> str:
+    for unit in ("B", "KiB", "MiB", "GiB", "TiB"):
+        if abs(size_bytes) < 1024:
+            return f"{size_bytes:.1f} {unit}"
+        size_bytes /= 1024
+    return f"{size_bytes:.1f} PiB"