Player: remote control while casting

Shows the receiver's position with play/pause, ±30 s and a scrubber;
a seek restarts the relay where asked.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/packages/meshbay-hub/tests/test_cast_discovery.py b/packages/meshbay-hub/tests/test_cast_discovery.py
index 77b0ef6..8bbe3c7 100644
--- a/packages/meshbay-hub/tests/test_cast_discovery.py
+++ b/packages/meshbay-hub/tests/test_cast_discovery.py
@@ -121,3 +121,33 @@ def test_the_local_player_is_silent_while_casting():
     assert "mutedBeforeCastRef.current = v.muted;" in effect
     assert "v.muted = mutedBeforeCastRef.current;" in effect
     assert "pause()" not in effect, "pausing would stop the stream the receiver is playing"
+
+
+def test_the_player_is_a_remote_while_casting():
+    """Phone and television do not play in step, so while a receiver plays the
+    film the scrubber shows the receiver's position (stream time plus where
+    the stream started) and every seek goes through the ordinary seek, which
+    restarts the relay and reloads the receiver there. The copy-URL cast has
+    no receiver to read and keeps the local player."""
+    from spa_source import STATIC
+    player = (STATIC / "video-player.js").read_text(encoding="utf-8")
+    remote = player.split("// ── Remote ──", 1)[1].split("return html`", 1)[0]
+    assert "castDeviceName !== null && platform.cast.canControl" in remote
+    assert "streamStartRef.current + c.position" in remote
+    # Until the restart lands, the receiver's position is the old stream's.
+    assert "!castRestartPendingRef.current" in remote
+    assert "requestSeekRef.current(target)" in remote
+    assert "platform.cast.chromecastPause()" in remote
+    assert "platform.cast.chromecastPlay()" in remote
+    # A language change restarts the stream where the television is.
+    assert "remoteFilmPosRef.current ?? (v && v.currentTime)" in player
+
+
+def test_every_locale_names_the_remote_controls():
+    from spa_source import STATIC
+    keys = ["cast.playing_on", "cast.waiting", "cast.back30", "cast.fwd30", "cast.play", "cast.pause"]
+    for f in sorted((STATIC / "locales").glob("*.js")):
+        text = f.read_text(encoding="utf-8")
+        for k in keys:
+            assert f"'{k}':" in text, f"{f.name} lacks {k}"
+    assert "{device}" in (STATIC / "locales" / "ja.js").read_text(encoding="utf-8")