feat(ui): add sources check to not repeat identical sources (#1705)

Author: icsy7867

private_gpt/ui/ui.py

@@ -96,10 +96,15 @@ def yield_deltas(completion_gen: CompletionGen) -> Iterable[str]:
             if completion_gen.sources:
                 full_response += SOURCES_SEPARATOR
                 cur_sources = Source.curate_sources(completion_gen.sources)
-                sources_text = "\n\n\n".join(
-                    f"{index}. {source.file} (page {source.page})"
-                    for index, source in enumerate(cur_sources, start=1)
-                )
+                sources_text = "\n\n\n"
+                used_files = set()
+                for index, source in enumerate(cur_sources, start=1):
+                    if (source.file + "-" + source.page) not in used_files:
+                        sources_text = (
+                            sources_text
+                            + f"{index}. {source.file} (page {source.page}) \n\n"
+                        )
+                        used_files.add(source.file + "-" + source.page)
                 full_response += sources_text
             yield full_response