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import json
import os
from collections import defaultdict
from random import shuffle
from typing import Optional

import click
from tqdm import tqdm

from config import config
from text.cleaner import clean_text
from common.stdout_wrapper import SAFE_STDOUT
from common.log import logger

preprocess_text_config = config.preprocess_text_config


@click.command()
@click.option(
    "--transcription-path",
    default=preprocess_text_config.transcription_path,
    type=click.Path(exists=True, file_okay=True, dir_okay=False),
)
@click.option("--cleaned-path", default=preprocess_text_config.cleaned_path)
@click.option("--train-path", default=preprocess_text_config.train_path)
@click.option("--val-path", default=preprocess_text_config.val_path)
@click.option(
    "--config-path",
    default=preprocess_text_config.config_path,
    type=click.Path(exists=True, file_okay=True, dir_okay=False),
)
@click.option("--val-per-lang", default=preprocess_text_config.val_per_lang)
@click.option("--max-val-total", default=preprocess_text_config.max_val_total)
@click.option("--clean/--no-clean", default=preprocess_text_config.clean)
@click.option("-y", "--yml_config")
def preprocess(
    transcription_path: str,
    cleaned_path: Optional[str],
    train_path: str,
    val_path: str,
    config_path: str,
    val_per_lang: int,
    max_val_total: int,
    clean: bool,
    yml_config: str,  # 这个不要删
):
    if cleaned_path == "" or cleaned_path is None:
        cleaned_path = transcription_path + ".cleaned"

    if clean:
        with open(cleaned_path, "w", encoding="utf-8") as out_file:
            with open(transcription_path, "r", encoding="utf-8") as trans_file:
                for line in tqdm(trans_file, file=SAFE_STDOUT):
                    try:
                        utt, spk, language, text = line.strip().split("|")
                        norm_text, phones, tones, word2ph = clean_text(text, language)
                        out_file.write(
                            "{}|{}|{}|{}|{}|{}|{}\n".format(
                                utt,
                                spk,
                                language,
                                norm_text,
                                " ".join(phones),
                                " ".join([str(i) for i in tones]),
                                " ".join([str(i) for i in word2ph]),
                            )
                        )
                    except Exception as e:
                        logger.error(
                            f"An error occurred while generating the training set and validation set, at line:\n{line}\nDetails:\n{e}"
                        )
                        raise

    transcription_path = cleaned_path
    spk_utt_map = defaultdict(list)
    spk_id_map = {}
    current_sid = 0

    with open(transcription_path, "r", encoding="utf-8") as f:
        audioPaths = set()
        countSame = 0
        countNotFound = 0
        for line in f.readlines():
            utt, spk, language, text, phones, tones, word2ph = line.strip().split("|")
            if utt in audioPaths:
                # 过滤数据集错误:相同的音频匹配多个文本,导致后续bert出问题
                logger.warning(f"Same audio matches multiple texts: {line}")
                countSame += 1
                continue
            if not os.path.isfile(utt):
                # 过滤数据集错误:不存在对应音频
                logger.warning(f"Audio not found: {utt}")
                countNotFound += 1
                continue
            audioPaths.add(utt)
            spk_utt_map[language].append(line)
            if spk not in spk_id_map.keys():
                spk_id_map[spk] = current_sid
                current_sid += 1
        logger.info(
            f"Total repeated audios: {countSame}, Total number of audio not found: {countNotFound}"
        )

    train_list = []
    val_list = []

    for spk, utts in spk_utt_map.items():
        shuffle(utts)
        val_list += utts[:val_per_lang]
        train_list += utts[val_per_lang:]

    shuffle(val_list)
    if len(val_list) > max_val_total:
        train_list += val_list[max_val_total:]
        val_list = val_list[:max_val_total]

    with open(train_path, "w", encoding="utf-8") as f:
        for line in train_list:
            f.write(line)

    with open(val_path, "w", encoding="utf-8") as f:
        for line in val_list:
            f.write(line)

    json_config = json.load(open(config_path, encoding="utf-8"))
    json_config["data"]["spk2id"] = spk_id_map
    json_config["data"]["n_speakers"] = len(spk_id_map)
    # 新增写入:写入训练版本、数据集路径
    # json_config["version"] = latest_version
    json_config["data"]["training_files"] = os.path.normpath(train_path).replace(
        "\\", "/"
    )
    json_config["data"]["validation_files"] = os.path.normpath(val_path).replace(
        "\\", "/"
    )
    with open(config_path, "w", encoding="utf-8") as f:
        json.dump(json_config, f, indent=2, ensure_ascii=False)
    logger.info("Training set and validation set generation from texts is complete!")


if __name__ == "__main__":
    preprocess()