Add MPV overlay queue controls

src/core/services/overlay-drop.test.ts

@@ -0,0 +1,69 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import {
+  buildMpvLoadfileCommands,
+  collectDroppedVideoPaths,
+  parseClipboardVideoPath,
+  type DropDataTransferLike,
+} from './overlay-drop';
+
+function makeTransfer(data: Partial<DropDataTransferLike>): DropDataTransferLike {
+  return {
+    files: data.files,
+    getData: data.getData,
+  };
+}
+
+test('collectDroppedVideoPaths keeps supported dropped file paths in order', () => {
+  const transfer = makeTransfer({
+    files: [
+      { path: '/videos/ep02.mkv' },
+      { path: '/videos/notes.txt' },
+      { path: '/videos/ep03.MP4' },
+    ],
+  });
+
+  const result = collectDroppedVideoPaths(transfer);
+
+  assert.deepEqual(result, ['/videos/ep02.mkv', '/videos/ep03.MP4']);
+});
+
+test('collectDroppedVideoPaths parses text/uri-list entries and de-duplicates', () => {
+  const transfer = makeTransfer({
+    getData: (format: string) =>
+      format === 'text/uri-list'
+        ? '#comment\nfile:///tmp/ep01.mkv\nfile:///tmp/ep01.mkv\nfile:///tmp/ep02.webm\nfile:///tmp/readme.md\n'
+        : '',
+  });
+
+  const result = collectDroppedVideoPaths(transfer);
+
+  assert.deepEqual(result, ['/tmp/ep01.mkv', '/tmp/ep02.webm']);
+});
+
+test('buildMpvLoadfileCommands replaces first file and appends remainder by default', () => {
+  const commands = buildMpvLoadfileCommands(['/tmp/ep01.mkv', '/tmp/ep02.mkv'], false);
+
+  assert.deepEqual(commands, [
+    ['loadfile', '/tmp/ep01.mkv', 'replace'],
+    ['loadfile', '/tmp/ep02.mkv', 'append'],
+  ]);
+});
+
+test('buildMpvLoadfileCommands uses append mode when shift-drop is used', () => {
+  const commands = buildMpvLoadfileCommands(['/tmp/ep01.mkv', '/tmp/ep02.mkv'], true);
+
+  assert.deepEqual(commands, [
+    ['loadfile', '/tmp/ep01.mkv', 'append'],
+    ['loadfile', '/tmp/ep02.mkv', 'append'],
+  ]);
+});
+
+test('parseClipboardVideoPath accepts quoted local paths', () => {
+  assert.equal(parseClipboardVideoPath('"/tmp/ep10.mkv"'), '/tmp/ep10.mkv');
+});
+
+test('parseClipboardVideoPath accepts file URI and rejects non-video', () => {
+  assert.equal(parseClipboardVideoPath('file:///tmp/ep11.mp4'), '/tmp/ep11.mp4');
+  assert.equal(parseClipboardVideoPath('/tmp/notes.txt'), null);
+});