"""
Constant symbols and compiled RegExs use for cleaning.
This part solely copied from package clean-text
"""
import re
import sys
import unicodedata


BANGLA_DIGIT_REGEX = re.compile(
    r'[০-৯]+'
)

# taken hostname, domainname, tld from URL regex below
EMAIL_REGEX = re.compile(
    r"(?:^|(?<=[^\w@.)]))([\w+-](\.(?!\.))?)*?[\w+-](@|[(<{\[]at[)>}\]])(?:(?:[a-z\\u00a1-\\uffff0-9]-?)*[a-z\\u00a1-\\uffff0-9]+)(?:\.(?:[a-z\\u00a1-\\uffff0-9]-?)*[a-z\\u00a1-\\uffff0-9]+)*(?:\.(?:[a-z\\u00a1-\\uffff]{2,}))",
    flags=re.IGNORECASE | re.UNICODE,
)

# source: https://gist.github.com/dperini/729294
# @jfilter: I guess it was changed
URL_REGEX = re.compile(
    r"(?:^|(?<![\w\/\.]))"
    # protocol identifier
    # r"(?:(?:https?|ftp)://)"  <-- alt?
    r"(?:(?:https?:\/\/|ftp:\/\/|www\d{0,3}\.))"
    # user:pass authentication
    r"(?:\S+(?::\S*)?@)?" r"(?:"
    # IP address exclusion
    # private & local networks
    r"(?!(?:10|127)(?:\.\d{1,3}){3})"
    r"(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})"
    r"(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})"
    # IP address dotted notation octets
    # excludes loopback network 0.0.0.0
    # excludes reserved space >= 224.0.0.0
    # excludes network & broadcast addresses
    # (first & last IP address of each class)
    r"(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])"
    r"(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}"
    r"(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))"
    r"|"
    # host name
    r"(?:(?:[a-z\\u00a1-\\uffff0-9]-?)*[a-z\\u00a1-\\uffff0-9]+)"
    # domain name
    r"(?:\.(?:[a-z\\u00a1-\\uffff0-9]-?)*[a-z\\u00a1-\\uffff0-9]+)*"
    # TLD identifier
    r"(?:\.(?:[a-z\\u00a1-\\uffff]{2,}))" r"|" r"(?:(localhost))" r")"
    # port number
    r"(?::\d{2,5})?"
    # resource path
    r"(?:\/[^\)\]\}\s]*)?",
    # r"(?:$|(?![\w?!+&\/\)]))",
    # @jfilter: I removed the line above from the regex because I don't understand what it is used for, maybe it was useful?
    # But I made sure that it does not include ), ] and } in the URL.
    flags=re.UNICODE | re.IGNORECASE,
)

strange_double_quotes = [
    "«",
    "‹",
    "»",
    "›",
    "„",
    "“",
    "‟",
    "”",
    "❝",
    "❞",
    "❮",
    "❯",
    "〝",
    "〞",
    "〟",
    "＂",
]
strange_single_quotes = ["‘", "‛", "’", "❛", "❜", "`", "´", "‘", "’"]

DOUBLE_QUOTE_REGEX = re.compile("|".join(strange_double_quotes))
SINGLE_QUOTE_REGEX = re.compile("|".join(strange_single_quotes))