from typing import List, Optional, Union, Dict
from pathlib import Path
import yaml
import json
from .enums import NamingScheme
from .generic_text import GenericText
from .formatterif import Config
from .git_version_info import GitVersionInfo
from .constants import *
from .enums import TeXType, TeXFlavour


class VersionInfo:
    def __init__(self):
        self._repo_version: Optional[GitVersionInfo] = None
        self._pytex_version: Optional[GitVersionInfo] = None

    @property
    def pytex_version(self) -> Optional[GitVersionInfo]:
        if self._pytex_version is None:
            return None
        else:
            return self._pytex_version

    @property
    def repo_version(self) -> Optional[GitVersionInfo]:
        if self._repo_version is None:
            return None
        else:
            return self._repo_version


def clean_dict(dictionary: Dict) -> Optional[Dict]:
    aux = {
        k: clean_dict(v) for k, v in dictionary.items() if type(v) == dict
    } | {
        k: v for k, v in dictionary.items() if type(v) != dict
    }
    aux2 = {
        k: v for k, v in aux.items() if v is not None
    }
    return aux2 if aux2 != {} else None


class FormattingConfig(Config):
    def __init__(self):
        self._naming_scheme: Optional[Union[NamingScheme, str]] = None
        self._license: Optional[GenericText] = None
        self._description: Optional[str] = None

        self._include_extra_header: 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_time: Optional[bool] = None
        self._include_license: Optional[bool] = None

        self._extra_header: Optional[GenericText] = None
        self._author: Optional[str] = None
        self._version: Optional[str] = None
        self._pytex_info_text: Optional[GenericText] = None
        self._repo_info_text: Optional[GenericText] = None

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

        self._doc_dependencies: Optional[List[str]] = None
        self._tex_dependencies: Optional[List[str]] = None

        self._tex_type: Optional[TeXType] = None
        self._tex_flavour: Optional[TeXFlavour] = None

    def set_from_json(self, content: Dict):
        content = FormattingConfig().to_json() | content  # Fill with none values

        info = content[YAML_INFO]
        self._author = info[YAML_AUTHOR]
        self._naming_scheme = info[YAML_NAMING_SCHEME]
        self._tex_flavour = info[YAML_TEX_FLAVOUR]
        self._tex_type = info[YAML_TEX_TYPE]
        self._description = info[YAML_DESCRIPTION]

        header = content[YAML_HEADER]
        extra = header[YAML_EXTRA]
        self._include_extra_header = extra[YAML_INCLUDE_EXTRA_HEADER]
        self._extra_header = GenericText(
            extra[YAML_PATH] if extra[YAML_PATH] else extra[YAML_TEXT]
        )

    @classmethod
    def from_yaml(cls, content: Path):
        with open(content, 'r') as config:
            content: Dict = yaml.safe_load(config)
        return cls.from_json(content)

    @classmethod
    def from_json(cls, content: Union[Path, Dict]):
        if isinstance(content, Path):
            with open(content, 'r') as config:
                content: Dict = json.load(config)
        config = FormattingConfig()
        config.set_from_json(content)
        return config

    def dump_as_yaml(self, filename: Path):
        with filename.open('w') as file:
            simple_dict = clean_dict(self.to_json())
            if simple_dict is not None:
                yaml.dump(simple_dict, file)
            else:
                pass  # TODO

    def to_json(self) -> Dict:
        return {
            YAML_INFO: {
                YAML_AUTHOR: self._author,
                YAML_NAMING_SCHEME: self._naming_scheme,
                YAML_TEX_FLAVOUR: self._tex_flavour,
                YAML_TEX_TYPE: self._tex_type,
                YAML_VERSION: self._version,
                YAML_DESCRIPTION: self._description
            },
            YAML_HEADER: {
                YAML_EXTRA: {
                    YAML_INCLUDE_EXTRA_HEADER: self._include_extra_header,
                    YAML_PATH: self._extra_header.pathname if self._extra_header else None,
                    YAML_TEXT: self._extra_header.real_text if self._extra_header else None
                },
                YAML_REPO: {
                    YAML_INCLUDE_INFO_TEXT: self._include_repo_info_text,
                    YAML_INCLUDE_VERSION: self._include_repo_version,
                    YAML_PATH: self._repo_info_text.pathname if self._repo_info_text else None,
                    YAML_TEXT: self._repo_info_text.real_text if self._repo_info_text else None
                },
                YAML_PYTEX: {
                    YAML_INCLUDE_INFO_TEXT: self._include_pytex_info_text,
                    YAML_INCLUDE_VERSION: self._include_pytex_version,
                    YAML_PATH: self._pytex_info_text.path if self._pytex_info_text else None,
                    YAML_TEXT: self._pytex_info_text.real_text if self._pytex_info_text else None
                },
                YAML_INCLUDE_TIME: self._include_time,
                YAML_LICENSE: {
                    YAML_INCLUDE_LICENSE: self._include_license,
                    YAML_PATH: self._license.path if self._license else None,
                    YAML_TEXT: self._license.real_text if self._license else None
                },
            },
            YAML_DOCSTRIP: {
                YAML_INCLUDE_DRV: self._include_drv,
                YAML_INCLUDE_INS: self._include_ins,
                YAML_DOCSTRIP_GUARDS: self._docstrip_guards
            },
            YAML_DEPENDENCIES: {
                YAML_DOC_DEPENDENCIES: self._doc_dependencies,
                YAML_TEX_DEPENDENCIES: self._tex_dependencies
            }
        }

    @property
    def naming_scheme(self) -> NamingScheme:
        if self._naming_scheme is None:
            return NamingScheme.prepend_author
        else:
            return self._naming_scheme

    @naming_scheme.setter
    def naming_scheme(self, naming_scheme: NamingScheme):
        self._naming_scheme = naming_scheme

    @property
    def license(self) -> GenericText:
        if self._license is None:
            return GenericText()
        else:
            return self._license

    @license.setter
    def license(self, license: GenericText):
        self._license = license

    @property
    def include_extra_header(self) -> bool:
        if self._include_extra_header is None:
            return False
        else:
            return self._include_extra_header

    @include_extra_header.setter
    def include_extra_header(self, include: bool):
        self._include_extra_header = include

    @property
    def include_pytex_version(self) -> bool:
        if self._include_pytex_version is None:
            return False
        else:
            return self._include_pytex_version

    @include_pytex_version.setter
    def include_pytex_version(self, include: bool):
        self._include_pytex_version = include

    @property
    def include_pytex_info_text(self) -> bool:
        if self._include_pytex_info_text is None:
            return False
        else:
            return self._include_pytex_info_text

    @include_pytex_info_text.setter
    def include_pytex_info_text(self, include: bool):
        self._include_pytex_info_text = include

    @property
    def include_repo_version(self) -> bool:
        if self._include_repo_version is None:
            return False
        else:
            return self._include_repo_version

    @include_repo_version.setter
    def include_repo_version(self, include: bool):
        self._include_repo_version = include

    @property
    def include_repo_info_text(self) -> bool:
        if self._include_repo_info_text is None:
            return False
        else:
            return self._include_repo_info_text

    @include_repo_info_text.setter
    def include_repo_info_text(self, include: bool):
        self._include_repo_info_text = include

    @property
    def extra_header(self) -> GenericText:
        if self._extra_header is None:
            return GenericText()
        else:
            return self._extra_header

    @extra_header.setter
    def extra_header(self, extra_header: GenericText):
        self._extra_header = extra_header

    @property
    def author(self) -> str:
        if self._author is None:
            return "MISSING AUTHOR"
        else:
            return self._author

    @author.setter
    def author(self, author: str):
        self._author = author

    @property
    def version(self) -> str:
        if self._version is None:
            return "0.0.0"
        else:
            return self._version

    @version.setter
    def version(self, version: str):
        self._version = version

    @property
    def pytex_info_text(self) -> GenericText:
        if self._pytex_info_text is None:
            return GenericText()
        else:
            return self._pytex_info_text

    @pytex_info_text.setter
    def pytex_info_text(self, info_text: GenericText):
        self._pytex_info_text = info_text

    @property
    def repo_info_text(self) -> GenericText:
        if self._repo_info_text is None:
            return GenericText()
        else:
            return self._repo_info_text

    @repo_info_text.setter
    def repo_info_text(self, info_text: GenericText):
        self._repo_info_text = info_text

    @property
    def include_drv(self) -> bool:
        if self._include_drv is None:
            return False
        else:
            return self._include_drv

    @include_drv.setter
    def include_drv(self, include: bool):
        self._include_drv = include

    @property
    def include_ins(self) -> bool:
        if self._include_ins is None:
            return False
        else:
            return self._include_ins

    @include_ins.setter
    def include_ins(self, include):
        self._include_ins = include

    @property
    def docstrip_guards(self) -> List[str]:
        if self._docstrip_guards is None:
            return []
        else:
            return self._docstrip_guards

    @docstrip_guards.setter
    def docstrip_guards(self, guards: List[str]):
        self._docstrip_guards = guards

    @property
    def description(self) -> str:
        if self._description is None:
            return ''
        else:
            return self._description

    @description.setter
    def description(self, description: str):
        self._description = description

    @property
    def include_time(self) -> bool:
        if self._include_time is None:
            return False
        else:
            return self._include_time

    @include_time.setter
    def include_time(self, include: bool):
        self._include_time = include

    @property
    def doc_dependencies(self) -> List[str]:
        if self._doc_dependencies is None:
            return []
        else:
            return self._doc_dependencies

    @doc_dependencies.setter
    def doc_dependencies(self, dependencies: List[str]):
        self._doc_dependencies = dependencies

    @property
    def tex_dependencies(self) -> List[str]:
        if self._tex_dependencies is None:
            return []
        else:
            return self._tex_dependencies

    @tex_dependencies.setter
    def tex_dependencies(self, dependencies: List[str]):
        self._tex_dependencies = dependencies


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