d

cmdlet/download_file.py

@@ -215,6 +215,38 @@ class Download_File(Cmdlet):
                         if availability or reason:
                             msg += f" (availability={availability or ''} reason={reason or ''})"
                         log(msg, file=sys.stderr)
+
+                        # Fallback: run a LibGen title search so the user can pick an alternative source.
+                        try:
+                            title_text = str(title or "").strip()
+                            if not title_text and isinstance(full_metadata, dict):
+                                title_text = str(full_metadata.get("title") or "").strip()
+                            if title_text:
+                                log(f"[download-file] Not available on OpenLibrary; searching LibGen for: {title_text}", file=sys.stderr)
+                                from cmdlet.search_provider import CMDLET as _SEARCH_PROVIDER_CMDLET
+                                # Use plain title text (LibGen mirrors can be finicky with fielded query prefixes).
+                                fallback_query = title_text
+
+                                ret = _SEARCH_PROVIDER_CMDLET.exec(
+                                    None,
+                                    ["-provider", "libgen", "-query", fallback_query],
+                                    config,
+                                )
+
+                                # download-file is treated as an action command by the pipeline printer.
+                                # Promote the search-provider table to a display overlay so it renders.
+                                try:
+                                    table = pipeline_context.get_last_result_table()
+                                    items = pipeline_context.get_last_result_items()
+                                    if table is not None:
+                                        pipeline_context.set_last_result_table_overlay(table, items)
+                                except Exception:
+                                    pass
+
+                                return int(ret)
+                        except Exception:
+                            pass
+
                         continue
 
                     # Fallback: if we have a direct HTTP URL, download it directly