api bugfix

src/MangaBakaWorksResolver.py

@@ -133,24 +133,50 @@ class MangaBakaWorksResolver:
     # ------------------------------------------------------------------
     @staticmethod
     def _pick_cover_url(cover) -> "str | None":
-        """Selects the best (raw-preferred) cover URL from a cover object."""
+        """
+        Selects the best cover URL from a MangaBaka cover object.
+
+        Real API shape:
+            "raw":  {"url": "...", "size": ..., "height": ..., "width": ...}
+            "x150": {"x1": "...", "x2": "...", "x3": "..."}
+            "x250": {...}
+            "x350": {...}
+
+        Order: raw original > x350@x3 > x250@x3 > x150@x3 ...
+        """
         if not cover:
             return None
         if isinstance(cover, str):
             return cover
-        if isinstance(cover, dict):
-            url = cover.get("raw").get("url") or None
-            if url:
-                return url
+        if not isinstance(cover, dict):
+            return None
 
-            # Generic fallback: any HTTP URL in the dict
-            for val in cover.values():
-                if isinstance(val, str) and val.startswith("http"):
-                    return val
-                if isinstance(val, dict):
-                    for sub_val in val.values():
-                        if isinstance(sub_val, str) and sub_val.startswith("http"):
-                            return sub_val
+        raw = cover.get("raw")
+        if isinstance(raw, dict):
+            url = raw.get("url")
+            if isinstance(url, str) and url:
+                return url
+        elif isinstance(raw, str) and raw:
+            return raw
+
+        for size_key in ("x350", "x250", "x150"):
+            variant = cover.get(size_key)
+            if isinstance(variant, dict):
+                for density in ("x3", "x2", "x1"):
+                    url = variant.get(density)
+                    if isinstance(url, str) and url:
+                        return url
+            elif isinstance(variant, str) and variant:
+                return variant
+
+        # Last-ditch: any HTTP URL anywhere in the structure
+        for val in cover.values():
+            if isinstance(val, str) and val.startswith("http"):
+                return val
+            if isinstance(val, dict):
+                for sub_val in val.values():
+                    if isinstance(sub_val, str) and sub_val.startswith("http"):
+                        return sub_val
         return None