Tom Boullay
123 lines
3.8 KiB
TypeScript
123 lines
3.8 KiB
TypeScript
import { ASSET_EXTENSIONS, TEXTURE_EXTENSIONS } from '@/lib/constants'
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import { getTextureNamingError } from '@/lib/asset-naming'
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import { getErrorMessage, isRecord } from '@/lib/guards'
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import type { TextureFile } from '@/lib/client-types'
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const SUPPORT_FILE_EXT_ARRAY = [...TEXTURE_EXTENSIONS, ...ASSET_EXTENSIONS]
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interface GltfBufferReference {
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uri?: unknown
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}
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interface GltfJson {
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buffers?: GltfBufferReference[]
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}
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/** Discriminated union: either valid (with model) or invalid (with errors). */
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type ValidationResult =
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| { ok: true; model: File; textures: TextureFile[]; warnings: string[] }
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| { ok: false; errors: string[] }
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function isGltfJson(value: unknown): value is GltfJson {
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if (!isRecord(value)) return false
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if (value.buffers === undefined) return true
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return Array.isArray(value.buffers) && value.buffers.every(isRecord)
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}
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function getReferencedBufferNames(gltf: GltfJson) {
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return (gltf.buffers || [])
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.map((buffer) => (typeof buffer.uri === 'string' ? buffer.uri : undefined))
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.filter((uri): uri is string => typeof uri === 'string' && uri.length > 0)
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.filter((uri) => !uri.startsWith('data:'))
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.map((uri) => decodeURIComponent(uri.split(/[?#]/)[0] || '').split(/[\\/]/).pop()?.toLowerCase())
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.filter((filename): filename is string => Boolean(filename))
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}
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function getFileExtension(filename: string) {
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return filename.slice(filename.lastIndexOf('.')).toLowerCase()
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}
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async function getGltfWarnings(model: File, supportFiles: File[]) {
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const warnings: string[] = []
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let parsed: unknown
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try {
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parsed = JSON.parse(await model.text())
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} catch {
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throw new Error('model.gltf contient un JSON invalide')
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}
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if (!isGltfJson(parsed)) {
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throw new Error('model.gltf a une structure invalide')
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}
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const supportFilenames = new Set(supportFiles.map((file) => file.name.toLowerCase()))
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const binFiles = supportFiles.filter((file) => file.name.toLowerCase().endsWith('.bin'))
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for (const bufferName of getReferencedBufferNames(parsed)) {
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if (!bufferName.endsWith('.bin') || supportFilenames.has(bufferName)) continue
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if (binFiles.length === 1) {
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warnings.push(
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`model.gltf reference ${bufferName} mais le dossier contient ${binFiles[0].name}. La preview peut utiliser ${binFiles[0].name}, mais l'upload final risque d'etre casse. Veillez changer le nom du fichier .bin pour ne pas casser l'export.`,
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)
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continue
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}
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warnings.push(`model.gltf reference ${bufferName}, mais ce fichier .bin est absent du dossier.`)
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}
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return warnings
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}
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export async function validateFolder(files: File[]): Promise<ValidationResult> {
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const textures: TextureFile[] = []
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const errors: string[] = []
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const modelFiles = files.filter((f) => {
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const name = f.name.toLowerCase()
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return name === 'model.gltf'
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})
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if (modelFiles.length === 0) {
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return { ok: false, errors: ['model.gltf manquant (obligatoire)'] }
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}
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if (modelFiles.length > 1) {
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return { ok: false, errors: ['Un seul fichier model.gltf est autorise'] }
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}
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const supportFiles = files.filter((f) => {
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const ext = getFileExtension(f.name)
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return SUPPORT_FILE_EXT_ARRAY.includes(ext)
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})
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const textureNamingErrors = supportFiles
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.filter((file) => TEXTURE_EXTENSIONS.has(getFileExtension(file.name)))
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.map((file) => getTextureNamingError(file.name))
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.filter((error): error is string => Boolean(error))
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errors.push(...textureNamingErrors)
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for (const tf of supportFiles) {
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textures.push({ name: tf.name, file: tf })
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}
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if (errors.length > 0) {
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return { ok: false, errors }
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}
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let warnings: string[] = []
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try {
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warnings = await getGltfWarnings(modelFiles[0], supportFiles)
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} catch (err) {
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errors.push(getErrorMessage(err, 'model.gltf invalide'))
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}
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if (errors.length > 0) {
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return { ok: false, errors }
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}
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return { ok: true, model: modelFiles[0], textures, warnings }
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}
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