# SPDX-FileCopyrightText: Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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import json
import torch

from hifigan_models import Generator
from hifigan_env import AttrDict
from hifigan_denoiser import Denoiser


def lines_to_list(filename):
    """
    Takes a text file of filenames and makes a list of filenames
    """
    with open(filename, encoding="utf-8") as f:
        files = f.readlines()

    files = [f.rstrip() for f in files]
    return files


def load_vocoder(vocoder_path, config_path, to_cuda=False):
    with open(config_path) as f:
        data_vocoder = f.read()

    config_vocoder = json.loads(data_vocoder)
    h = AttrDict(config_vocoder)

    if "blur" in vocoder_path:
        config_vocoder["gaussian_blur"]["p_blurring"] = 0.5
    else:
        if "gaussian_blur" in config_vocoder:
            config_vocoder["gaussian_blur"]["p_blurring"] = 0.0
        else:
            config_vocoder["gaussian_blur"] = {"p_blurring": 0.0}
            h["gaussian_blur"] = {"p_blurring": 0.0}

    state_dict_g = torch.load(vocoder_path, map_location="cpu")["generator"]

    # load hifigan
    vocoder = Generator(h)
    vocoder.load_state_dict(state_dict_g)
    denoiser = Denoiser(vocoder)

    if to_cuda:
        vocoder.cuda()
        denoiser.cuda()

    vocoder.eval()
    denoiser.eval()

    return vocoder, denoiser