from typing import Optional, List, Dict, Tuple, Union
from pathlib import Path
from .enums import PyTeXFileType
from PyTeX.format.formatter import Formatter
from PyTeX.build.paths import RelativePath


class PyTeXSourceFile:
    def __init__(self):
        self._pytex_file_type: PyTeXFileType = None
        self._relative_path: RelativePath = None
        self._formatter: Formatter = None

    @property
    def relative_path(self):
        return self._relative_path

    @property
    def pytex_file_type(self) -> PyTeXFileType:
        return self._pytex_file_type

    @property
    def output_files(self) -> List[RelativePath]:
        files = self._formatter.output_files
        files = [
            self._relative_path.with_name(filename)
            for filename in files
        ]
        return files

    def format(self, target_root: Union[Path, RelativePath]) -> Optional[List[Tuple[RelativePath, Dict]]]:
        try:
            configs = self._formatter.format(
                target_root.path if isinstance(target_root, RelativePath) else target_root
            )
        except Exception as e:
            raise NotImplementedError
        configs = [
            (self._relative_path.with_name(filename), config)
            for [filename, config] in configs
        ]
        return configs