fix: normalize exported texture filenames

lib/asset-naming.ts

@@ -6,6 +6,8 @@ export const ASSET_FAMILIES = [
   'metalness',
   'height',
   'opacity',
+  'orm',
+  'ao',
 ] as const
 
 export type AssetFamily = typeof ASSET_FAMILIES[number]
@@ -21,6 +23,23 @@ const FORBIDDEN_ASSET_FAMILY_ALIASES: ReadonlyMap<string, AssetFamily> = new Map
   ['occlusion_roughness_metallic', 'roughness'],
 ])
 
+const EXPORTED_SUFFIX_ALIASES: Array<{ suffix: string; family: AssetFamily }> = [
+  { suffix: 'occlusionroughnessmetallic', family: 'orm' },
+  { suffix: 'occlusion_roughness_metallic', family: 'orm' },
+  { suffix: 'normal_opengl', family: 'normal' },
+  { suffix: 'normalopengl', family: 'normal' },
+  { suffix: 'base_color', family: 'color' },
+  { suffix: 'basecolor', family: 'color' },
+  { suffix: 'mixed_ao', family: 'ao' },
+  { suffix: 'metallic', family: 'metalness' },
+  { suffix: 'roughness', family: 'roughness' },
+  { suffix: 'normal', family: 'normal' },
+  { suffix: 'height', family: 'height' },
+  { suffix: 'opacity', family: 'opacity' },
+  { suffix: 'diffuse', family: 'diffuse' },
+  { suffix: 'color', family: 'color' },
+]
+
 export function getAssetFamily(value: string): AssetFamily | undefined {
   return ASSET_FAMILY_BY_KEY.get(value.toLowerCase())
 }
@@ -33,11 +52,68 @@ function getFileStem(filename: string) {
   return filename.replace(/\.[^.]+$/, '')
 }
 
+function getFileExtension(filename: string) {
+  return filename.split('.').pop()?.toLowerCase() || ''
+}
+
+function normalizeTargetName(target: string) {
+  return target
+    .trim()
+    .replace(/[\s-]+/g, '_')
+    .replace(/_+/g, '_')
+    .replace(/^_+|_+$/g, '')
+}
+
+function buildTextureFilename(family: AssetFamily, target: string, extension: string) {
+  const normalizedTarget = normalizeTargetName(target)
+  return `${family}${normalizedTarget ? `_${normalizedTarget}` : ''}.${extension}`
+}
+
+function getExportedTextureAlias(stem: string) {
+  const lowerStem = stem.toLowerCase()
+
+  for (const alias of EXPORTED_SUFFIX_ALIASES) {
+    const lowerSuffix = alias.suffix.toLowerCase()
+    if (lowerStem === lowerSuffix) {
+      return { family: alias.family, target: '' }
+    }
+
+    if (lowerStem.endsWith(`_${lowerSuffix}`)) {
+      return {
+        family: alias.family,
+        target: stem.slice(0, -lowerSuffix.length - 1),
+      }
+    }
+  }
+
+  return null
+}
+
+export function normalizeTextureFilename(filename: string) {
+  const stem = getFileStem(filename)
+  const extension = getFileExtension(filename)
+  const [prefix, ...targetParts] = stem.split('_')
+  const family = getAssetFamily(prefix)
+
+  if (family) {
+    return buildTextureFilename(family, targetParts.join('_'), extension)
+  }
+
+  const exportedAlias = getExportedTextureAlias(stem)
+  if (exportedAlias) {
+    return buildTextureFilename(exportedAlias.family, exportedAlias.target, extension)
+  }
+
+  return null
+}
+
 export function getTextureNamingError(filename: string) {
   const stem = getFileStem(filename)
   const [prefix, ...targetParts] = stem.split('_')
   const family = getAssetFamily(prefix)
-  const extension = filename.split('.').pop()
+  const extension = getFileExtension(filename)
+
+  if (normalizeTextureFilename(filename)) return null
 
   if (family && targetParts.every(Boolean)) return null