# Copyright 2010-2023 Kurt McKee <contactme@kurtmckee.org>
# Copyright 2002-2008 Mark Pilgrim
# All rights reserved.
#
# This file is a part of feedparser.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
#   this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
#   this list of conditions and the following disclaimer in the documentation
#   and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# POSSIBILITY OF SUCH DAMAGE.

import re

from .rfc822 import _parse_date_rfc822

# Unicode strings for Greek date strings
_greek_months = {
    "\u0399\u03b1\u03bd": "Jan",  # c9e1ed in iso-8859-7
    "\u03a6\u03b5\u03b2": "Feb",  # d6e5e2 in iso-8859-7
    "\u039c\u03ac\u03ce": "Mar",  # ccdcfe in iso-8859-7
    "\u039c\u03b1\u03ce": "Mar",  # cce1fe in iso-8859-7
    "\u0391\u03c0\u03c1": "Apr",  # c1f0f1 in iso-8859-7
    "\u039c\u03ac\u03b9": "May",  # ccdce9 in iso-8859-7
    "\u039c\u03b1\u03ca": "May",  # cce1fa in iso-8859-7
    "\u039c\u03b1\u03b9": "May",  # cce1e9 in iso-8859-7
    "\u0399\u03bf\u03cd\u03bd": "Jun",  # c9effded in iso-8859-7
    "\u0399\u03bf\u03bd": "Jun",  # c9efed in iso-8859-7
    "\u0399\u03bf\u03cd\u03bb": "Jul",  # c9effdeb in iso-8859-7
    "\u0399\u03bf\u03bb": "Jul",  # c9f9eb in iso-8859-7
    "\u0391\u03cd\u03b3": "Aug",  # c1fde3 in iso-8859-7
    "\u0391\u03c5\u03b3": "Aug",  # c1f5e3 in iso-8859-7
    "\u03a3\u03b5\u03c0": "Sep",  # d3e5f0 in iso-8859-7
    "\u039f\u03ba\u03c4": "Oct",  # cfeaf4 in iso-8859-7
    "\u039d\u03bf\u03ad": "Nov",  # cdefdd in iso-8859-7
    "\u039d\u03bf\u03b5": "Nov",  # cdefe5 in iso-8859-7
    "\u0394\u03b5\u03ba": "Dec",  # c4e5ea in iso-8859-7
}

_greek_wdays = {
    "\u039a\u03c5\u03c1": "Sun",  # caf5f1 in iso-8859-7
    "\u0394\u03b5\u03c5": "Mon",  # c4e5f5 in iso-8859-7
    "\u03a4\u03c1\u03b9": "Tue",  # d4f1e9 in iso-8859-7
    "\u03a4\u03b5\u03c4": "Wed",  # d4e5f4 in iso-8859-7
    "\u03a0\u03b5\u03bc": "Thu",  # d0e5ec in iso-8859-7
    "\u03a0\u03b1\u03c1": "Fri",  # d0e1f1 in iso-8859-7
    "\u03a3\u03b1\u03b2": "Sat",  # d3e1e2 in iso-8859-7
}

_greek_date_format_re = re.compile(
    r"([^,]+),\s+(\d{2})\s+([^\s]+)\s+(\d{4})\s+(\d{2}):(\d{2}):(\d{2})\s+([^\s]+)"
)


def _parse_date_greek(date_string):
    """Parse a string according to a Greek 8-bit date format."""
    m = _greek_date_format_re.match(date_string)
    if not m:
        return
    wday = _greek_wdays[m.group(1)]
    month = _greek_months[m.group(3)]
    rfc822date = (
        "%(wday)s, %(day)s %(month)s %(year)s %(hour)s:%(minute)s:%(second)s %(offset)s"
        % {
            "wday": wday,
            "day": m.group(2),
            "month": month,
            "year": m.group(4),
            "hour": m.group(5),
            "minute": m.group(6),
            "second": m.group(7),
            "offset": m.group(8),
        }
    )
    return _parse_date_rfc822(rfc822date)
