"""
Generate 'Kevin' table for README.
"""

import precis_i18n.codec  # noqa: F401

letter_k = [
    ord("K"),
    0x212A,
    0xFF2B,
    0x039A,
    0x1E32,
    0x1E34,
    0x2C69,
    0xA740,
    0xA742,
    0xA744,
    0xA7A2,
    0x24C0,
    0x1F11A,
    0x1F13A,
    0x1F15A,
    0x1F17A,
]


def _escape(s):
    return s.encode("raw-unicode-escape").decode("ascii").replace("\\", "&#92;")


def _xml_escape(s):
    return s.encode("ascii", errors="xmlcharrefreplace").decode("ascii")


def _column(s):
    try:
        # Leave ASCII strings alone.
        s.encode("ascii")
        return s
    except UnicodeEncodeError:
        pass
    return "%s (%s)" % (_xml_escape(s), _escape(s))


print("Original String|UsernameCasePreserved|UsernameCaseMapped|NicknameCaseMapped")
print("---------------|---------------------|------------------|------------------")

for k in letter_k:
    kevin = chr(k) + "evin"

    try:
        case_preserved = kevin.encode("UsernameCasePreserved").decode("utf-8")
    except UnicodeEncodeError:
        case_preserved = "DISALLOWED"

    try:
        case_mapped = kevin.encode("UsernameCaseMapped").decode("utf-8")
    except UnicodeEncodeError:
        case_mapped = "DISALLOWED"

    nickname = kevin.encode("NicknameCaseMapped").decode("utf-8")

    col1 = _column(kevin)
    col2 = _column(case_preserved)
    col3 = _column(case_mapped)
    col4 = _column(nickname)

    print("%s | %s | %s | %s" % (col1, col2, col3, col4))
