#encoding = utf8
import logging
import asyncio
import time

import edge_tts
import numpy as np
import pyaudio
import soundfile
import resampy
import queue
from io import BytesIO
from queue import Queue
from threading import Thread, Event

from pydub import AudioSegment

logger = logging.getLogger(__name__)


class TTSBase:
    def __init__(self, human):
        self._human = human
        self._thread = None
        self._queue = Queue()
        self._exit_event = None
        self._io_stream = BytesIO()
        self._sample_rate = 16000
        self._chunk_len = self._sample_rate // self._human.get_fps()

        self._exit_event = Event()
        self._thread = Thread(target=self._on_run)
        self._exit_event.set()
        self._thread.start()
        self._pcm_player = pyaudio.PyAudio()
        self._pcm_stream = self._pcm_player.open(format=pyaudio.paInt16,
                                                 channels=1, rate=16000, output=True)
        logging.info('tts start')

    def _on_run(self):
        logging.info('tts run')
        while self._exit_event.is_set():
            try:
                txt = self._queue.get(block=True, timeout=1)
            except queue.Empty:
                continue
            self._request(txt)
        logging.info('tts exit')

    def _request(self, txt):
        voice = 'zh-CN-XiaoyiNeural'
        t = time.time()
        asyncio.new_event_loop().run_until_complete(self.__on_request(voice, txt))
        logger.info(f'edge tts time:{time.time() - t : 0.4f}s')

        self._io_stream.seek(0)
        stream = self.__create_bytes_stream(self._io_stream)
        stream_len = stream.shape[0]
        index = 0
        while stream_len >= self._chunk_len:
            audio_chunk = stream[index:index + self._chunk_len]
            # self._pcm_stream.write(audio_chunk)
            # self._pcm_stream.write(AudioSegment.from_mp3(audio_chunk))
            # self._human.push_audio_chunk(audio_chunk)
            # self._human.push_mel_chunks_queue(audio_chunk)
            self._human.push_audio_chunk(audio_chunk)
            stream_len -= self._chunk_len
            index += self._chunk_len

    def __create_bytes_stream(self, io_stream):
        stream, sample_rate = soundfile.read(io_stream)
        logger.info(f'tts audio stream {sample_rate} : {stream.shape}')
        stream = stream.astype(np.float32)

        if stream.ndim > 1:
            logger.warning(f'tts audio has {stream.shape[1]} channels, only use the first')
            stream = stream[:, 1]

        if sample_rate != self._sample_rate and stream.shape[0] > 0:
            logger.warning(f'tts audio sample rate is {sample_rate}, resample to {self._sample_rate}')
            stream = resampy.resample(x=stream, sr_orig=sample_rate, sr_new=self._sample_rate)

        return stream

    async def __on_request(self, voice, txt):
        communicate = edge_tts.Communicate(txt, voice)
        first = True
        # total_data = b''
        # CHUNK_SIZE = self._chunk_len
        async for chunk in communicate.stream():
            if chunk["type"] == "audio" and chunk["data"]:
                self._io_stream.write(chunk['data'])
                # total_data += chunk["data"]
                # if len(total_data) >= CHUNK_SIZE:
                #     print(f"Time elapsed: {time.time() - start_time:.2f} seconds")  # Print time
                    # audio_data = AudioSegment.from_mp3(BytesIO(total_data[:CHUNK_SIZE])) #.raw_data
                    # audio_data = audio_data.set_frame_rate(self._human.get_audio_sample_rate())
                    # self._human.push_audio_chunk(audio_data)
                    # self._pcm_stream.write(audio_data.raw_data)
                    # play_audio(total_data[:CHUNK_SIZE], stream)  # Play first CHUNK_SIZE bytes
                    # total_data = total_data[CHUNK_SIZE:]  # Remove played data

            # if first:
            #     first = False

            # if chuck['type'] == 'audio':
            #     # self._io_stream.write(chuck['data'])
            #     self._io_stream.write(AudioSegment.from_mp3(BytesIO(total_data[:CHUNK_SIZE])).raw_data)
        # if len(total_data) > 0:
             # self._pcm_stream.write(AudioSegment.from_mp3(BytesIO(total_data)).raw_data)
             # audio_data = AudioSegment.from_mp3(BytesIO(total_data))  # .raw_data
             # audio_data = audio_data.set_frame_rate(self._human.get_audio_sample_rate())
             # self._human.push_audio_chunk(audio_data)
        # self._io_stream.write(AudioSegment.from_mp3(BytesIO(total_data)).raw_data)

    def stop(self):
        self._pcm_stream.stop_stream()
        self._pcm_player.close(self._pcm_stream)
        self._pcm_player.terminate()
        if self._exit_event is None:
            return

        self._exit_event.clear()
        self._thread.join()
        logging.info('tts stop')

    def clear(self):
        self._queue.queue.clear()

    def push_txt(self, txt):
        self._queue.put(txt)