import os
import fnmatch
import yaml
from gradio.utils import NamedString

from modules.utils.paths import DEFAULT_PARAMETERS_CONFIG_PATH


class YAMLDumper(yaml.SafeDumper):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.add_representer(str, self.str_presenter)

    def write_line_break(self, data=None):
        super().write_line_break(data)
        if len(self.indents) == 1:
            super().write_line_break()

    @staticmethod
    def str_presenter(dumper, data):
        special_chars = set(' \n\t:-[]{},&*#?|>!%@`"\'')
        if any(char in special_chars for char in data) or data == '':
            return dumper.represent_scalar('tag:yaml.org,2002:str', data, style='"')
        return dumper.represent_scalar('tag:yaml.org,2002:str', data)


def load_yaml(path: str = DEFAULT_PARAMETERS_CONFIG_PATH):
    with open(path, 'r', encoding='utf-8') as file:
        config = yaml.safe_load(file)
    return config


def save_yaml(data: dict, path: str = DEFAULT_PARAMETERS_CONFIG_PATH):
    data = yaml.dump(data, sort_keys=False, default_flow_style=False, Dumper=YAMLDumper, allow_unicode=True)
    with open(path, 'w', encoding='utf-8') as file:
        file.write(data)
    return path


def get_media_files(folder_path, include_sub_directory=False):
    video_extensions = ['*.mp4', '*.mkv', '*.flv', '*.avi', '*.mov', '*.wmv']
    audio_extensions = ['*.mp3', '*.wav', '*.aac', '*.flac', '*.ogg', '*.m4a']
    media_extensions = video_extensions + audio_extensions

    media_files = []

    if include_sub_directory:
        for root, _, files in os.walk(folder_path):
            for extension in media_extensions:
                media_files.extend(
                    os.path.join(root, file) for file in fnmatch.filter(files, extension)
                    if os.path.exists(os.path.join(root, file))
                )
    else:
        for extension in media_extensions:
            media_files.extend(
                os.path.join(folder_path, file) for file in fnmatch.filter(os.listdir(folder_path), extension)
                if os.path.isfile(os.path.join(folder_path, file)) and os.path.exists(os.path.join(folder_path, file))
            )

    return media_files


def format_gradio_files(files: list):
    if not files:
        return files

    gradio_files = []
    for file in files:
        gradio_files.append(NamedString(file))
    return gradio_files