from pathlib import Path
from typing import Optional, List
from .formatting_config import FormattingConfig
from .enums import TeXType, TeXFlavour
from .formatterif import FormatterIF
from .generic_text import GenericText


class PyTeXFormatter(FormatterIF):
    def __init__(
            self,
            input_file: Optional[Path] = None,
            config: Optional[FormattingConfig] = None,
            tex_type: Optional[TeXType] = None,
            tex_flavour: Optional[TeXFlavour] = None
    ):
        super().__init__(
            input_file=input_file,
            config=config
        )
        self._config: Optional[FormattingConfig] = self._config
        self._tex_type: Optional[TeXType] = tex_type
        self._tex_flavour: Optional[TeXFlavour] = tex_flavour
        self._header: Optional[GenericText] = None
        self._formatted_header: Optional[str] = None

    @property
    def config(self) -> FormattingConfig:
        if self._config is None:
            raise NotImplementedError
        return self._config

    @property
    def header(self) -> GenericText:
        if self._header is None:
            if not(
                self.config.include_extra_header
                or self.config.include_build_time
                or self.config.include_pytex_version
                or self.config.include_pytex_info_text
                or self.config.include_repo_version
                or self.config.include_repo_info_text
            ):
                self._header = GenericText([])
            else:
                self._header = GenericText([])
                # TODO: handle license
                if self.config.include_extra_header:
                    self._header += self.config.extra_header + ['']
                if self.config.include_repo_info_text:
                    self._header += self.config.repo_info_text
                if self.config.include_pytex_info_text:
                    self._header += self.config.pytex_info_text + ['']

                ## TODO handle rest

        return self._header