Validate block states

src/app/hooks/customValidation.ts

@@ -0,0 +1,36 @@
+import { Errors, Hook, relativePath } from '@mcschema/core'
+import { BlockStateRegistry } from '../App'
+import { walk } from './walk'
+
+export const customValidation: Hook<[any, Errors], void> = walk<[Errors]>({
+  base() {},
+
+  boolean() {},
+
+  choice() {},
+
+  list() {},
+
+  map({ config }, path, value) {
+    if (config.validation?.validator === 'block_state_map') {
+      const block = relativePath(path, config.validation.params.id).get()
+      const errors = path.getModel().errors
+
+      const requiredProps = BlockStateRegistry[block].properties ?? {}
+      const existingKeys = Object.keys(value ?? {})
+      Object.keys(requiredProps).forEach(p => {
+        if (!existingKeys.includes(p)) {
+          errors.add(path, 'error.block_state.missing_property', p)
+        } else if (!requiredProps[p].includes(value[p])) {
+          errors.add(path.push(p), 'error.invalid_enum_option', value[p])
+        }
+      })
+    }
+  },
+
+  number() {},
+
+  object() {},
+
+  string() {}
+})