from typing import List, Optional, Union
from .enums import NamingScheme, License
from .generic_text import GenericText


def generate_properties(attr_names):
    def decorator(cls):
        for attr_name in attr_names:
            def get_attr(self, attr_name=attr_name):
                return getattr(self, "_" + attr_name)

            prop = property(get_attr)
            setattr(cls, attr_name, prop)
        return cls

    return decorator


@generate_properties(['naming_scheme'])
class FormattingConfig:
    def __init__(self):
        self._naming_scheme: Optional[Union[NamingScheme, str]] = None
        self._license: Optional[List[License]] = None

        self._extra_header: Optional[List[str]] = None
        self._include_extra_header: Optional[bool] = None
        self._include_build_time: Optional[bool] = None
        self._include_pytex_version: Optional[bool] = None
        self._include_pytex_info_text: Optional[bool] = None
        self._include_repo_version: Optional[bool] = None
        self._include_repo_info_text: Optional[bool] = None

        self._include_drv: Optional[bool] = True
        self._include_ins: Optional[bool] = True
        self._use_docstrip_guards: Optional[List[str]] = None

        self._author: Optional[str] = None
        self._licenses = Optional[List[GenericText]]
        self._version: Optional[str] = None
        self._extra_header_file: Optional[GenericText] = None
        self._pytex_version: Optional[str] = None
        self._pytex_info_text: Optional[GenericText] = None
        self._repo_version: Optional[str] = None
        self._repo_info_text: Optional[GenericText] = None

    def merge_with(self, other, strict: bool = False):
        """
        Merges the other config into this one
        :param other:
        :param strict: whether conflicting options are allowed or not
        :return: self
        """
        for var in vars(self):
            if not getattr(self, var):
                setattr(self, var, getattr(other, var))
            else:
                if strict and getattr(other, var) is not None and getattr(self, var) != getattr(other, var):
                    raise NotImplementedError
        return self


class DocFormattingConfig:
    def __init__(self):
        self._documents: Optional[List[str]] = None
        self._dependencies: Optional[List[str]] = None