import tempfile
import os
from .enums import TeXType
from .formatting_config import FormattingConfig
from .pytex_formatter import PyTeXFormatter
from pathlib import Path
import subprocess
import shutil

from typing import List, Tuple


class DocStripFormatter(PyTeXFormatter):

    @property
    def output_files(self) -> List[str]:
        if self.config.tex_out_type == TeXType.TeXClass:
            return [self.raw_name + '.cls']
        elif self.config.tex_out_type == TeXType.TeXPackage:
            return [self.raw_name + '.sty']
        else:
            raise NotImplementedError

    def format(self, build_dir: Path, overwrite: bool = False) -> List[Tuple[str, FormattingConfig]]:
        tmp_dir: Path = Path(tempfile.mkdtemp())
        shutil.copy(
            self.input_file,
            tmp_dir
        )
        if self.input_file.with_suffix('.ins').exists():
            shutil.copy(
                self.input_file.with_suffix('.ins'),
                tmp_dir
            )
            result = subprocess.run(
                ["tex", self.input_file.with_suffix('.ins').name],
                cwd=tmp_dir,
                stderr=subprocess.DEVNULL,  # TODO
                stdout=subprocess.DEVNULL  # TODO
            )
            if not result.returncode == 0:
                raise NotImplementedError('no correct returncode')
        else:
            result = subprocess.run(
                ['pdflatex', self.input_file.name],
                cwd=tmp_dir,
                stderr=subprocess.STDOUT
            )
            if not result.returncode == 0:
                raise NotImplementedError
        for file in self.output_files:
            outfile = tmp_dir / file
            if not outfile.exists():
                raise NotImplementedError(f'output file {outfile} does not exist')
            shutil.copy(outfile, build_dir)
        shutil.rmtree(tmp_dir)
        return []  # No future config

    @property
    def dependencies(self) -> List[str]:
        return []  # TODO