fixed part role mapping to categories. set a const for categories

data/partRoleMappings.ts

@@ -0,0 +1,40 @@
+import type { CategoryId } from "@/types/gunbuilder";
+
+// CategoryId -> partRoles
+export const CATEGORY_TO_PART_ROLES: Record<CategoryId, string[]> = {
+  // CORE / EXISTING
+  upper: ["upper-receiver"],
+  barrel: ["barrel"],
+  handguard: ["handguard"],
+  chargingHandle: ["charging-handle"],
+  buffer: ["buffer-kit"],
+  lowerParts: ["lower-parts-kit"],
+  sights: ["sight"],
+  lower: ["lower-receiver"],
+  optic: ["optic"],
+  stock: ["stock"],
+
+  // NEW LOWER PARTS
+  trigger: ["trigger", "trigger-kit"],
+  grip: ["pistol-grip", "grip"],
+  safety: ["safety", "safety-selector"],
+  completeLower: ["complete-lower"],
+
+  // NEW UPPER PARTS
+  completeUpper: ["complete-upper"],
+  bcg: ["bcg", "bolt-carrier-group"],
+  gasBlock: ["gas-block"],
+  gasTube: ["gas-tube"],
+  muzzleDevice: ["muzzle-device", "compensator", "brake"],
+  suppressor: ["suppressor"],
+};
+
+// Invert to get partRole -> CategoryId
+export const PART_ROLE_TO_CATEGORY: Record<string, CategoryId> = Object
+  .entries(CATEGORY_TO_PART_ROLES)
+  .reduce((acc, [categoryId, roles]) => {
+    for (const role of roles) {
+      acc[role] = categoryId as CategoryId;
+    }
+    return acc;
+  }, {} as Record<string, CategoryId>);