feat: 初始化慧遇书院官网一期

server/utils/media.ts

@@ -0,0 +1,81 @@
+import type { Database } from 'better-sqlite3'
+import { access, mkdir, rename } from 'node:fs/promises'
+import { dirname, resolve, sep } from 'node:path'
+
+export interface MediaAssetRow {
+  id: number
+  asset_key: string
+  original_name: string
+  mime_type: string
+  extension: string
+  bytes: number
+  width: number
+  height: number
+  original_path: string
+  derived_path: string
+  thumbnail_path: string
+  alt_text: string
+  source_text: string
+  copyright_text: string
+  authorization_status: 'pending' | 'authorized' | 'restricted'
+  status: 'active' | 'trash' | 'deleted'
+  created_at: string
+  updated_at: string
+  deleted_at: string | null
+}
+
+export const mediaUrl = (relativePath: string) => `/api/media/${relativePath}`
+
+export function serializeMedia(row: MediaAssetRow, referenced = false) {
+  return {
+    id: row.id,
+    key: row.asset_key,
+    originalName: row.original_name,
+    mimeType: row.mime_type,
+    bytes: row.bytes,
+    width: row.width,
+    height: row.height,
+    url: mediaUrl(row.derived_path),
+    thumbnailUrl: mediaUrl(row.thumbnail_path),
+    altText: row.alt_text,
+    source: row.source_text,
+    copyright: row.copyright_text,
+    authorizationStatus: row.authorization_status,
+    status: row.status,
+    referenced,
+    createdAt: row.created_at,
+    deletedAt: row.deleted_at,
+  }
+}
+
+export function isMediaReferenced(db: Database, row: MediaAssetRow) {
+  const document = db.prepare('SELECT draft_json, published_json FROM site_documents WHERE document_key = ?').get('website') as { draft_json: string; published_json: string }
+  const needles = [mediaUrl(row.original_path), mediaUrl(row.derived_path), mediaUrl(row.thumbnail_path)]
+  return needles.some(path => document.draft_json.includes(path) || document.published_json.includes(path))
+}
+
+export function uploadsRoot() { return resolve(process.cwd(), 'data', 'uploads') }
+
+export function safeUploadPath(relativePath: string) {
+  const root = uploadsRoot()
+  const fullPath = resolve(root, relativePath)
+  if (!fullPath.startsWith(`${root}${sep}`)) throw createError({ statusCode: 400, statusMessage: '无效的文件路径' })
+  return fullPath
+}
+
+export async function moveMediaFiles(row: MediaAssetRow, target: 'trash' | 'restore') {
+  const paths = [row.original_path, row.derived_path, row.thumbnail_path]
+  for (const current of paths) {
+    const sourceRelative = target === 'trash' ? current : current.replace(/^trash\//, '')
+    const destinationRelative = target === 'trash' ? `trash/${current}` : current.replace(/^trash\//, '')
+    const source = safeUploadPath(target === 'trash' ? sourceRelative : `trash/${sourceRelative}`)
+    const destination = safeUploadPath(destinationRelative)
+    try {
+      await access(source)
+      await mkdir(dirname(destination), { recursive: true })
+      await rename(source, destination)
+    } catch (error: any) {
+      if (error?.code !== 'ENOENT') throw error
+    }
+  }
+}