Shared Catalog

src/vamp_zero/library.cpp

@@ -3,6 +3,7 @@
 #include <filesystem>
 #include <fstream>
 #include <iterator>
+#include <map>
 #include <string>
 #include <string_view>
 #include <system_error>
@@ -96,6 +97,27 @@ auto vamp_zero::score_paths(std::string const &assets_path, vamp_zero::score_cat
     return std::unexpected(vamp_zero::make_error(vamp_zero::error_code::UNAVAILABLE, "failed to scan score assets: " + error.message()));
   }
   std::sort(paths.begin(), paths.end());
+  if (practice) {
+    auto exercises = std::map<std::string, std::filesystem::path>{};
+    auto variants = std::map<std::string, std::filesystem::path>{};
+    for (auto const &path : paths) {
+      auto relative = path.lexically_relative(root);
+      auto exercise_path = relative.parent_path();
+      auto id = std::string{};
+      for (auto const &part : exercise_path) {
+        id += (id.empty() ? "" : "-") + part.string();
+      }
+      auto [exercise, added] = exercises.emplace(id, relative);
+      if (!added && exercise->second.parent_path() != exercise_path) {
+        return std::unexpected(invalid("practice exercise ID collision '" + id + "': " + (root / exercise->second).string() + " and " + path.string()));
+      }
+      auto variant_id = id + "-" + path.stem().string();
+      auto [variant, unique] = variants.emplace(variant_id, relative);
+      if (!unique) {
+        return std::unexpected(invalid("practice variant ID collision '" + variant_id + "': " + (root / variant->second).string() + " and " + path.string()));
+      }
+    }
+  }
   return paths;
 }