doocus improvemnts

ui/doocus-app/server/doocusApi.ts

@@ -80,7 +80,7 @@ export function doocusApi(opts: Options): Plugin {
       server.middlewares.use('/api', (req, res, next) => {
         const url = new URL(req.url ?? '/', 'http://localhost')
         const parts = url.pathname.split('/').filter(Boolean)
-        handle(res, parts, url.searchParams).catch((err) => {
+        handle(res, parts, url.searchParams, req.headers.range).catch((err) => {
           server.config.logger.error(`[doocus-api] ${String(err)}`)
           sendJson(res, 500, { error: String(err) })
         }).then((handled) => { if (!handled) next() })
@@ -88,7 +88,7 @@ export function doocusApi(opts: Options): Plugin {
     },
   }
 
-  async function handle(res: ServerResponse, parts: string[], q: URLSearchParams): Promise<boolean> {
+  async function handle(res: ServerResponse, parts: string[], q: URLSearchParams, range?: string): Promise<boolean> {
     if (parts[0] === 'tree') {
       const index = readIndex()
       if (!index) { sendJson(res, 404, { error: `index.json not found in ${outputDir}` }); return true }
@@ -102,7 +102,7 @@ export function doocusApi(opts: Options): Plugin {
     }
 
     if (parts[0] === 'original') {
-      await serveOriginal(res, q.get('path') ?? '')
+      await serveOriginal(res, q.get('path') ?? '', range)
       return true
     }
 
@@ -137,13 +137,34 @@ export function doocusApi(opts: Options): Plugin {
     })
   }
 
-  async function serveOriginal(res: ServerResponse, rel: string): Promise<void> {
+  async function serveOriginal(res: ServerResponse, rel: string, range?: string): Promise<void> {
     const index = readIndex()
     if (!index) { sendJson(res, 404, { error: 'no index' }); return }
     const abs = originalAbs(index, rel)
     if (!abs || !isFile(abs)) { sendJson(res, 404, { error: 'original not reachable' }); return }
-    res.setHeader('Content-Type', MIME[path.extname(abs).toLowerCase()] ?? 'application/octet-stream')
-    res.setHeader('Cache-Control', 'no-cache')
+    const mime = MIME[path.extname(abs).toLowerCase()] ?? 'application/octet-stream'
+    const size = fs.statSync(abs).size
+    res.setHeader('Content-Type', mime)
+    res.setHeader('Accept-Ranges', 'bytes')
+
+    // Range support — needed so large meeting videos can seek/stream.
+    const m = range?.match(/bytes=(\d*)-(\d*)/)
+    if (m) {
+      const start = m[1] ? parseInt(m[1], 10) : 0
+      const end = m[2] ? parseInt(m[2], 10) : size - 1
+      if (start >= size || end >= size || start > end) {
+        res.statusCode = 416
+        res.setHeader('Content-Range', `bytes */${size}`)
+        res.end()
+        return
+      }
+      res.statusCode = 206
+      res.setHeader('Content-Range', `bytes ${start}-${end}/${size}`)
+      res.setHeader('Content-Length', String(end - start + 1))
+      fs.createReadStream(abs, { start, end }).pipe(res)
+      return
+    }
+    res.setHeader('Content-Length', String(size))
     fs.createReadStream(abs).pipe(res)
   }
 }