from __future__ import annotations
from enum import Enum
from typing import Optional


class FormatterMode(Enum):
    normal = 0
    drop = 1
    macrocode = 2
    macrocode_drop = 3


class NamingScheme(Enum):
    prepend_author = 'prepend_author'
    clean = 'clean'

    @staticmethod
    def parse(naming_scheme: str) -> Optional[NamingScheme]:
        if naming_scheme is None:
            return None
        switcher = {
            'prepend-author': NamingScheme.prepend_author,
            'prepend author': NamingScheme.prepend_author,
            'author': NamingScheme.prepend_author,
            'clean': NamingScheme.clean,
            'raw': NamingScheme.clean
        }
        if not naming_scheme in switcher.keys():
            raise NotImplementedError
        else:
            return switcher[naming_scheme]


class TeXType(Enum):
    TeXPackage = 'package'
    TeXClass = 'class'
    TeXDocstrip = 'docstrip file'
    TeXDictionary = 'dictionary'
    TeXDocumentation = 'documentation'

    @staticmethod
    def parse(tex_type: str) -> Optional[TeXType]:
        if tex_type is None:
            return None
        switcher = {
            'package': TeXType.TeXPackage,
            'sty': TeXType.TeXPackage,
            'class': TeXType.TeXClass,
            'cls': TeXType.TeXClass,
            'dictionary': TeXType.TeXDictionary,
            'dict': TeXType.TeXDictionary,
            'documentation': TeXType.TeXDocumentation,
            'doc': TeXType.TeXDocumentation,  # TODO: dangerous?
            'dtx': TeXType.TeXDocstrip,
            'docstrip': TeXType.TeXDocstrip,
            'strip': TeXType.TeXDocstrip
        }
        if tex_type not in switcher.keys():
            raise NotImplementedError
        else:
            return switcher[tex_type]


class TeXFlavour(Enum):
    TeX = 'TeX'
    LaTeX2e = 'LaTeX2e'
    LaTeX3 = 'LaTeX3'

    @staticmethod
    def parse(flavour: str) -> Optional[TeXFlavour]:
        if flavour is None:
            return None
        switcher = {
            '1': TeXFlavour.TeX,
            '2': TeXFlavour.LaTeX2e,
            '2e': TeXFlavour.LaTeX2e,
            '3': TeXFlavour.LaTeX3,
            'TeX': TeXFlavour.TeX,
            'LaTeX2e': TeXFlavour.LaTeX2e,
            'LaTeX2': TeXFlavour.LaTeX2e,
            'LateX3': TeXFlavour.LaTeX3
        }
        if flavour not in switcher.keys():
            raise NotImplementedError
        else:
            return switcher[flavour]


class MacroReplacementAtomIF:
    pass


class FormatterProperty(MacroReplacementAtomIF, Enum):
    author = 'author'
    shortauthor = 'shortauthor'
    date = 'date'
    year = 'year'
    raw_name = 'raw_name'  # The 'raw' name of the package, without author prefix
    name = 'name'  # class or package name
    file_prefix = 'file_prefix'
    version = 'version'
    file_name = 'file_name'
    source_file_name = 'source_file_name'
    repo_version = 'repo_version'
    repo_branch = 'repo_branch'
    repo_commit = 'repo_commit'
    repo_dirty = 'repo_dirty'
    pytex_version = 'pytex_version'
    pytex_branch = 'pytex_branch'
    pytex_commit = 'pytex_commit'
    pytex_dirty = 'pytex_dirty'
    tex_type = 'tex_type'
    tex_flavour = 'latex_flavour'
    description = 'description'


class Argument(MacroReplacementAtomIF, Enum):
    one = 1
    two = 2
    three = 3
    four = 4
    five = 5
    six = 6