站点同步

server/api/site-sync/media.get.ts

@@ -0,0 +1,75 @@
+import { getQuery } from 'h3'
+import { requireSiteSyncAuth } from '../../utils/access'
+import { createApiError } from '../../utils/api-error'
+import { listUserIdUsernameMap } from '../../utils/db'
+import {
+  getImageIndexRow,
+  getImageTotals,
+  listImageIndexRowsAfter
+} from '../../utils/image-index'
+import { validateStorageKey } from '../../utils/image-key'
+import { collectMediaAssetKeys } from '../../utils/media-assets'
+import { getBackendForKey } from '../../utils/storage/resolver'
+import { getTagsForImageKeys } from '../../utils/tags'
+import { toSiteSyncMediaTransfer } from '../../utils/site-sync/manifest'
+import type {
+  SiteSyncMediaAsset,
+  SiteSyncMediaBundle,
+  SiteSyncMediaPage
+} from '../../utils/site-sync/protocol'
+
+export default defineEventHandler(async (event): Promise<SiteSyncMediaPage> => {
+  await requireSiteSyncAuth(event)
+
+  const query = getQuery(event)
+  const key = typeof query.key === 'string' ? query.key.trim() : ''
+  const after = typeof query.after === 'string' ? query.after : ''
+  const limit = Math.min(
+    100,
+    Math.max(1, Number.parseInt(String(query.limit ?? '50'), 10) || 50)
+  )
+
+  if (key && !validateStorageKey(key)) {
+    createApiError(event, 'INVALID_REQUEST', '媒体 key 无效', 400)
+  }
+
+  const rows = key
+    ? [getImageIndexRow(key)].filter(row => row !== null)
+    : listImageIndexRowsAfter(after, limit)
+  if (key && rows.length === 0) {
+    createApiError(event, 'IMAGE_NOT_FOUND', '目标媒体不存在', 404)
+  }
+
+  const ownerMap = listUserIdUsernameMap()
+  const tagMap = getTagsForImageKeys(rows.map(row => row.key))
+  const items: SiteSyncMediaBundle[] = []
+
+  for (const row of rows) {
+    const backend = await getBackendForKey(row.key)
+    const keys = await collectMediaAssetKeys(row, backend)
+    const assets: SiteSyncMediaAsset[] = []
+    for (const assetKey of new Set(keys)) {
+      const stored = await backend.head(assetKey)
+      if (!stored) {
+        throw new Error(`目标媒体对象不存在：${assetKey}`)
+      }
+      assets.push({ key: assetKey, size: stored.size })
+    }
+    items.push({
+      media: toSiteSyncMediaTransfer(
+        row,
+        row.user_id == null ? null : ownerMap.get(row.user_id) ?? null,
+        tagMap.get(row.key) ?? []
+      ),
+      assets
+    })
+  }
+
+  return {
+    items,
+    totalMedia: getImageTotals().count,
+    nextCursor: key || rows.length < limit
+      ? null
+      : rows.at(-1)?.key ?? null
+  }
+})