"""Some generic utilities"""
# Copyright 2012-2014 Anthony Beville
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import annotations

import json
import logging
import os
import pathlib
import re
import unicodedata
from collections import defaultdict
from shutil import which  # noqa: F401
from typing import Any, Mapping

import pycountry

logger = logging.getLogger(__name__)


class UtilsVars:
    already_fixed_encoding = False


def get_recursive_filelist(pathlist: list[str]) -> list[str]:
    """Get a recursive list of of all files under all path items in the list"""

    filelist = []
    for p in pathlist:
        # if path is a folder, walk it recursively, and all files underneath
        if not isinstance(p, str):
            # it's probably a QString
            p = str(p)

        if os.path.isdir(p):
            for root, _, files in os.walk(p):
                for f in files:
                    if not isinstance(f, str):
                        # it's probably a QString
                        f = str(f)
                    filelist.append(os.path.join(root, f))
        else:
            filelist.append(p)

    return filelist


def list_to_string(lst: list[str | Any]) -> str:
    string = ""
    if lst is not None:
        for item in lst:
            if len(string) > 0:
                string += ", "
            string += item
    return string


def add_to_path(dirname: str) -> None:
    if dirname is not None and dirname != "":

        # verify that path doesn't already contain the given dirname
        tmpdirname = re.escape(dirname)
        pattern = r"(^|{sep}){dir}({sep}|$)".format(dir=tmpdirname, sep=os.pathsep)

        match = re.search(pattern, os.environ["PATH"])
        if not match:
            os.environ["PATH"] = dirname + os.pathsep + os.environ["PATH"]


def xlate(data: Any, is_int: bool = False) -> Any:
    if data is None or data == "":
        return None
    if is_int:
        i = str(data).translate(defaultdict(lambda: None, zip((ord(c) for c in "1234567890"), "1234567890")))
        if i == "0":
            return "0"
        if i == "":
            return None
        return int(i)

    return str(data)


def remove_articles(text: str) -> str:
    text = text.lower()
    articles = [
        "&",
        "a",
        "am",
        "an",
        "and",
        "as",
        "at",
        "be",
        "but",
        "by",
        "for",
        "if",
        "is",
        "issue",
        "it",
        "it's",
        "its",
        "itself",
        "of",
        "or",
        "so",
        "the",
        "the",
        "with",
    ]
    new_text = ""
    for word in text.split(" "):
        if word not in articles:
            new_text += word + " "

    new_text = new_text[:-1]

    return new_text


def sanitize_title(text: str) -> str:
    # normalize unicode and convert to ascii. Does not work for everything eg ½ to 1⁄2 not 1/2
    # this will probably cause issues with titles in other character sets e.g. chinese, japanese
    text = unicodedata.normalize("NFKD", text).encode("ascii", "ignore").decode("ascii")
    # comicvine keeps apostrophes a part of the word
    text = text.replace("'", "")
    text = text.replace('"', "")
    # comicvine ignores punctuation and accents
    text = re.sub(r"[^A-Za-z0-9]+", " ", text)
    # remove extra space and articles and all lower case
    text = remove_articles(text).lower().strip()

    return text


def unique_file(file_name: str) -> str:
    counter = 1
    file_name_parts = os.path.splitext(file_name)
    while True:
        if not os.path.lexists(file_name):
            return file_name
        file_name = file_name_parts[0] + " (" + str(counter) + ")" + file_name_parts[1]
        counter += 1


languages: dict[str | None, str | None] = defaultdict(lambda: None)

countries: dict[str | None, str | None] = defaultdict(lambda: None)

for c in pycountry.countries:
    if "alpha_2" in c._fields:
        countries[c.alpha_2] = c.name

for lng in pycountry.languages:
    if "alpha_2" in lng._fields:
        languages[lng.alpha_2] = lng.name


def get_language_from_iso(iso: str | None) -> str | None:
    return languages[iso]


def get_language(string: str | None) -> str | None:
    if string is None:
        return None

    lang = get_language_from_iso(string)

    if lang is None:
        try:
            return str(pycountry.languages.lookup(string).name)
        except LookupError:
            return None
    return lang


def get_publisher(publisher: str) -> tuple[str, str]:
    if publisher is None:
        return ("", "")
    imprint = ""

    for pub in publishers.values():
        imprint, publisher, ok = pub[publisher]
        if ok:
            break

    return (imprint, publisher)


def update_publishers(new_publishers: Mapping[str, Mapping[str, str]]) -> None:
    for publisher in new_publishers:
        if publisher in publishers:
            publishers[publisher].update(new_publishers[publisher])
        else:
            publishers[publisher] = ImprintDict(publisher, new_publishers[publisher])


class ImprintDict(dict):
    """
    ImprintDict takes a publisher and a dict or mapping of lowercased
    imprint names to the proper imprint name. Retreiving a value from an
    ImprintDict returns a tuple of (imprint, publisher, keyExists).
    if the key does not exist the key is returned as the publisher unchanged
    """

    def __init__(self, publisher: str, mapping=(), **kwargs) -> None:
        super().__init__(mapping, **kwargs)
        self.publisher = publisher

    def __missing__(self, key: str) -> None:
        return None

    def __getitem__(self, k: str) -> tuple[str, str, bool]:
        item = super().__getitem__(k.casefold())
        if k.casefold() == self.publisher.casefold():
            return ("", self.publisher, True)
        if item is None:
            return ("", k, False)
        else:
            return (item, self.publisher, True)

    def copy(self) -> ImprintDict:
        return ImprintDict(self.publisher, super().copy())


publishers: dict[str, ImprintDict] = {}


def load_publishers() -> None:
    try:
        update_publishers(json.loads((pathlib.Path(__file__).parent / "data" / "publishers.json").read_text("utf-8")))
    except Exception:
        logger.exception("Failed to load publishers.json; The are no publishers or imprints loaded")