Don't rely on the file root typeDef + refactor mcdoc props

src/app/components/generator/Tree.tsx

@@ -1,11 +1,12 @@
 import type { DocAndNode, Range } from '@spyglassmc/core'
 import type { JsonNode } from '@spyglassmc/json'
 import { JsonFileNode } from '@spyglassmc/json'
+import type { AttributeValue, McdocType } from '@spyglassmc/mcdoc'
 import { useCallback, useErrorBoundary, useMemo } from 'preact/hooks'
-import { useLocale } from '../../contexts/index.js'
+import { disectFilePath, useLocale, useVersion } from '../../contexts/index.js'
 import { useDocAndNode, useSpyglass } from '../../contexts/Spyglass.jsx'
 import type { McdocContext } from './McdocRenderer.jsx'
-import { McdocRoot } from './McdocRenderer.jsx'
+import { McdocRoot, simplifyType } from './McdocRenderer.jsx'
 
 type TreePanelProps = {
 	docAndNode: DocAndNode,
@@ -13,6 +14,7 @@ type TreePanelProps = {
 }
 export function Tree({ docAndNode: original, onError }: TreePanelProps) {
 	const { lang } = useLocale()
+	const { version } = useVersion()
 	const { service } = useSpyglass()
 
 	if (lang === 'none') return <></>
@@ -58,7 +60,46 @@ export function Tree({ docAndNode: original, onError }: TreePanelProps) {
 		return service.getCheckerContext(docAndNode.doc, errors)
 	}, [docAndNode, service])
 
+	const type = useMemo(() => {
+		if (!ctx) {
+			return undefined
+		}
+		const path = original.doc.uri
+			.replace(/^file:\/\/\/project\//, '')
+			.replace(/\.json$/, '')
+		const res = disectFilePath(path, version)
+		if (!res) {
+			return undefined
+		}
+		return simplifyType(getRootType(res.type), ctx)
+	}, [original.doc.uri, version, ctx])
+
 	return <div class="tree node-root" data-cy="tree">
-		{ctx && <McdocRoot node={fileChild.children[0]} makeEdit={makeEdit} ctx={ctx} />}
+		{(ctx && type) && <McdocRoot type={type} node={fileChild.children[0]} makeEdit={makeEdit} ctx={ctx} />}
 	</div>
 }
+
+function getRootType(id: string): McdocType {
+	if (id === 'pack_mcmeta') {
+		return { kind: 'reference', path: '::java::pack::Pack' }
+	}
+	if (id.startsWith('tag/')) {
+		const attribute: AttributeValue = {
+			kind: 'tree',
+			values: {
+				registry: { kind: 'literal', value: { kind: 'string', value: id.slice(4) } },
+				tags: { kind: 'literal', value: { kind: 'string', value: 'allowed' } },
+			},
+		}
+		return {
+			kind: 'concrete',
+			child: { kind: 'reference', path: '::java::data::tag::Tag' },
+			typeArgs: [{ kind: 'string', attributes: [{ name: 'id', value: attribute }] }],
+		}
+	}
+	return {
+		kind: 'dispatcher',
+		registry: 'minecraft:resource',
+		parallelIndices: [{ kind: 'static', value: id }],
+	}
+}