Shared Catalog

generator/practice/generate.py

@@ -67,6 +67,7 @@ def generate_practice_scores(source_dir: Path, output_dir: Path) -> int:
     return 0
   sources = sorted(source_dir.rglob('*.xml'))
   destinations: dict[Path, Path] = {}
+  identities: dict[str, Path] = {}
   for path in sources:
     parts = path.relative_to(source_dir).parts
     if len(parts) != 3 or parts[0] not in ('chord', 'melody'):
@@ -74,6 +75,10 @@ def generate_practice_scores(source_dir: Path, output_dir: Path) -> int:
     destination = Path(parts[0]) / parts[1] / slugify(path.stem)
     if destination in destinations:
       raise ValueError(f'{path}: practice output path collides with {destinations[destination]}: {destination}')
+    identity = '-'.join(destination.parts)
+    if identity in identities:
+      raise ValueError(f'{path}: practice exercise ID collision with {identities[identity]}: {identity}')
+    identities[identity] = path
     destinations[destination] = path
   count = 0
   for destination, path in destinations.items():