from __future__ import annotations

import unittest

from owner_voice_pet.models import AudioFrame, AudioSegment, Message, PlaybackResult, ReplyDelta, TransportHealth
from owner_voice_pet.real_live_check import (
    FixtureLiveAudioTransport,
    RecordingLlmProvider,
    TimingRecorder,
    _stage_timings_from_events,
)


def frame(idx: int) -> AudioFrame:
    return AudioFrame(b"\x00\x00", 16000, 1, idx * 20, idx, {"duration_ms": 20})


class FakeOutputTransport:
    def __init__(self) -> None:
        self.played: list[AudioSegment] = []

    def play_pcm(self, segment: AudioSegment, interrupt: bool = False) -> PlaybackResult:
        self.played.append(segment)
        return PlaybackResult(True, segment.duration_ms)

    def health(self) -> TransportHealth:
        return TransportHealth(True, True, "fake")


class RealLiveCheckTests(unittest.TestCase):
    def test_fixture_transport_flush_preserves_generated_future_frames(self) -> None:
        transport = FixtureLiveAudioTransport([frame(1), frame(2)], play_audio=False)
        transport.start_input()

        self.assertEqual(transport.flush_input(), 0)
        self.assertEqual(transport.flush_count, 1)
        self.assertEqual([item.frame_id for item in transport.read_frames(10)], [1])

    def test_fixture_transport_can_delegate_real_playback(self) -> None:
        output = FakeOutputTransport()
        transport = FixtureLiveAudioTransport([], play_audio=True, output_transport=output)
        segment = AudioSegment(b"\x00\x00", 16000, 1, 0, 20)

        result = transport.play_pcm(segment)

        self.assertTrue(result.played)
        self.assertEqual(output.played, [segment])
        self.assertEqual(transport.played_segments, [segment])

    def test_stage_timings_are_built_from_pipeline_events(self) -> None:
        events = [
            {"type": "wake_listening", "turn": 1, "at": "t0", "offset_ms": 0, "message": ""},
            {"type": "wake_detected", "turn": 1, "at": "t1", "offset_ms": 120, "message": ""},
            {"type": "ack_started", "turn": 1, "at": "t2", "offset_ms": 130, "message": ""},
            {"type": "question_prompt", "turn": 1, "at": "t3", "offset_ms": 250, "message": ""},
            {"type": "capture_started", "turn": 1, "at": "t4", "offset_ms": 260, "message": ""},
            {"type": "speech_started", "turn": 1, "at": "t5", "offset_ms": 300, "message": ""},
            {"type": "speech_ended", "turn": 1, "at": "t6", "offset_ms": 700, "message": ""},
            {"type": "stt_started", "turn": 1, "at": "t7", "offset_ms": 720, "message": ""},
            {"type": "transcript_final", "turn": 1, "at": "t8", "offset_ms": 900, "message": ""},
            {"type": "llm_started", "turn": 1, "at": "t9", "offset_ms": 910, "message": ""},
            {"type": "tts_started", "turn": 1, "at": "t10", "offset_ms": 1300, "message": ""},
            {"type": "playback_finished", "turn": 1, "at": "t11", "offset_ms": 1500, "message": ""},
            {"type": "standby_resumed", "turn": 1, "at": "t12", "offset_ms": 1520, "message": ""},
        ]

        timings = _stage_timings_from_events(events)
        by_name = {str(item["name"]): item for item in timings if "segment_index" not in item}

        self.assertEqual(by_name["wake_wait"]["duration_ms"], 120)
        self.assertEqual(by_name["acknowledgement"]["duration_ms"], 120)
        self.assertEqual(by_name["capture"]["duration_ms"], 400)
        self.assertEqual(by_name["final_stt"]["duration_ms"], 180)
        self.assertEqual(by_name["llm_to_first_tts"]["duration_ms"], 390)
        self.assertEqual(by_name["turn_total"]["duration_ms"], 1520)
        tts = [item for item in timings if item["name"] == "tts_playback"]
        self.assertEqual(tts[0]["duration_ms"], 200)

    def test_recording_llm_provider_records_sent_time_and_response_duration(self) -> None:
        class FakeLlm:
            def stream_reply(self, messages):
                yield ReplyDelta("你好", finish_reason="stop")

        timing = TimingRecorder()
        provider = RecordingLlmProvider(FakeLlm(), timing)  # type: ignore[arg-type]
        messages = [Message("user", "现在几点", 0.0)]

        deltas = list(provider.stream_reply(messages))

        self.assertEqual(deltas[0].text_delta, "你好")
        self.assertEqual(len(provider.request_timings), 1)
        request = provider.request_timings[0]
        self.assertIn("sent_at", request)
        self.assertIn("finished_at", request)
        self.assertIsInstance(request["duration_ms"], int)
        self.assertEqual(request["last_user_preview"], "现在几点")


if __name__ == "__main__":
    unittest.main()