DNDGamePlayer: Electron редактор сцен, презентация, упаковка electron-builder

Made-with: Cursor
2026-04-19 14:16:54 +08:00
commit a6cbcc273e
82 changed files with 22195 additions and 0 deletions
@@ -0,0 +1,73 @@
+import fs from 'node:fs/promises';
+
+import { session } from 'electron';
+
+import { asAssetId } from '../../shared/types/ids';
+import type { ZipProjectStore } from '../project/zipStore';
+
+/**
+ * Обслуживает `dnd://asset?...` — без этого `<img src="file://...">` в рендерере часто ломается.
+ */
+export function registerDndAssetProtocol(projectStore: ZipProjectStore): void {
+  session.defaultSession.protocol.handle('dnd', async (request) => {
+    const url = new URL(request.url);
+    if (url.hostname !== 'asset') {
+      return new Response(null, { status: 404 });
+    }
+    const id = url.searchParams.get('id');
+    if (!id) {
+      return new Response(null, { status: 404 });
+    }
+    const info = projectStore.getAssetReadInfo(asAssetId(id));
+    if (!info) {
+      return new Response(null, { status: 404 });
+    }
+    try {
+      const stat = await fs.stat(info.absPath);
+      const total = stat.size;
+      const range = request.headers.get('range') ?? request.headers.get('Range');
+
+      if (range) {
+        const m = /^bytes=(\d+)-(\d+)?$/iu.exec(range.trim());
+        if (m) {
+          const start = Number(m[1]);
+          const endRaw = m[2] ? Number(m[2]) : total - 1;
+          const end = Math.min(endRaw, total - 1);
+          if (!Number.isFinite(start) || !Number.isFinite(end) || start < 0 || end < start) {
+            return new Response(null, { status: 416 });
+          }
+          const len = end - start + 1;
+          const fh = await fs.open(info.absPath, 'r');
+          try {
+            const buf = Buffer.alloc(len);
+            await fh.read(buf, 0, len, start);
+            return new Response(buf, {
+              status: 206,
+              headers: {
+                'Content-Type': info.mime,
+                'Accept-Ranges': 'bytes',
+                'Content-Range': `bytes ${String(start)}-${String(end)}/${String(total)}`,
+                'Content-Length': String(len),
+                'Cache-Control': 'public, max-age=300',
+              },
+            });
+          } finally {
+            await fh.close();
+          }
+        }
+      }
+
+      const buf = await fs.readFile(info.absPath);
+      return new Response(buf, {
+        headers: {
+          'Content-Type': info.mime,
+          'Accept-Ranges': 'bytes',
+          'Content-Length': String(buf.length),
+          'Cache-Control': 'public, max-age=300',
+        },
+      });
+    } catch {
+      return new Response(null, { status: 404 });
+    }
+  });
+}