"""Fallback Supertonic pentru voice mode când modelul răspunde în română
pe o voce pocket-tts (English-only).

Fără fallback, fiecare clauză ar fi respinsă de pocket-tts (diacritice RO)
și turnul ar fi tăcere totală — bug observat 2026-07-11 („cât este ora" →
răspuns RO scris, zero audio).
"""
import queue
from unittest.mock import patch

from src.voice.tts_stream import TTSQueue
from tools.tts import DEFAULT_VOICE


def _drain_items(q: queue.Queue) -> list:
    items = []
    while True:
        try:
            items.append(q.get_nowait())
        except queue.Empty:
            return items


class TestPushTextLangRouting:
    @patch("src.voice.tts_stream.engine_for_voice", return_value="pockettts")
    def test_romanian_text_on_pockettts_falls_back_to_supertonic(self, _eng):
        ttsq = TTSQueue(voice_id="Marius 4")
        ttsq.push_text("Ora acum e nouă și cinci minute dimineața.")
        items = _drain_items(ttsq._text_queue)
        assert items, "clauzele trebuie să ajungă în coadă, nu să fie respinse"
        for clause, voice, lang in items:
            assert voice == DEFAULT_VOICE
            assert lang == "ro"

    @patch("src.voice.tts_stream.engine_for_voice", return_value="pockettts")
    def test_english_text_on_pockettts_keeps_cloned_voice(self, _eng):
        ttsq = TTSQueue(voice_id="Marius 4")
        ttsq.push_text("It's five past nine in the morning, Bucharest time.")
        items = _drain_items(ttsq._text_queue)
        assert items
        for clause, voice, lang in items:
            assert voice == "Marius 4"
            assert lang == "en"

    @patch("src.voice.tts_stream.engine_for_voice", return_value="supertonic")
    def test_supertonic_voice_unaffected(self, _eng):
        ttsq = TTSQueue(voice_id="M2")
        ttsq.push_text("Ora acum e nouă și cinci minute dimineața.")
        items = _drain_items(ttsq._text_queue)
        assert items
        for clause, voice, lang in items:
            assert voice == "M2"
            assert lang == "ro"


class TestWorkerConsumesTuples:
    @patch("src.voice.tts_stream.synthesize", return_value={"ok": False, "error": "x"})
    def test_worker_unpacks_clause_voice_lang(self, mock_synth):
        ttsq = TTSQueue(voice_id="Marius 4")
        ttsq._text_queue.put(("Hello there.", "Marius 4", "en"))
        ttsq.start()
        try:
            import time
            deadline = time.monotonic() + 2.0
            while not mock_synth.called and time.monotonic() < deadline:
                time.sleep(0.02)
        finally:
            ttsq.stop()
        mock_synth.assert_called_once_with("Hello there.", voice="Marius 4", lang="en")