import re

ROOT_PATH = '/srv/darknet-lantern/'
STATIC_PATH = ROOT_PATH + 'www/'
TEMPLATE_PATH = ROOT_PATH + 'templates/'

PARTICIPANT_DIR = STATIC_PATH + 'participants/'
OFFICIAL_PARTICIPANTS_FILE = STATIC_PATH + '.official_participants'
WEBRING_CSV_FILE = 'webring-participants.csv'

LOCAL_DIR = '' # Assign on script startup
LOCAL_INSTANCE = '' # Assign on script startup

PROXIES = {
    'http': 'socks5h://127.0.0.1:9050',
    'https': 'socks5h://127.0.0.1:9050'
}

CSV_FILES = [
    'verified.csv',
    'unverified.csv',
    'blacklist.csv',
    'sensitive.csv', 
    'webring-participants.csv'
]


############ REGEX ############

# name should contain only up to 64 alphanumeric characters
VALID_NAME_PATTERN = re.compile(r"^[A-Za-z0-9]{1,64}$")

# pattern for regular urls (https://stackoverflow.com/a/3809435)
CLEARNET_URL_PATTERN = re.compile(
    r"https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]"
    r"{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)"
)

# pattern for onion urls (56 bytes of base32 alphabet + .onion)
# it works also without http(s)://, so just the hostname will also go through
ONION_URL_PATTERN = re.compile(
    r"^(https?:\/\/)?([a-zA-Z0-9-]+\.)*[a-z2-7-]{56}\.onion[^\s]*$"
)

# pattern for simplex chatroom links
SIMPLEX_CHATROOM_PATTERN = re.compile(
    r"(?:https?:\/\/(?:simplex\.chat|[^\/]+)|simplex:)\/(?:contact|invitation)#\/\?v=[\d-]+"
    r"&smp=[^&]+(?:&[^=]+=[^&]*)*(?:&data=\{[^}]*\})?"
)

# pattern for smp or xftp simplex server ((smp|xftp):// 44 byte key @ url [:port])
SIMPLEX_SERVER_PATTERN = re.compile(
    r"^(smp|xftp):\/\/([a-zA-Z0-9\-_+=]{44})@([a-z2-7]{56}\.onion|"
    r"([a-zA-Z0-9\-\.]+\.[a-zA-Z0-9\-\.]+))"
    r"{1,}(?::[1-9][0-9]{0,4}|[1-5][0-9]{4}|6[0-4][0-9]{3}|"
    r"65[0-4][0-9]{2}|655[0-3][0-9]|6553[0-5])?$"
)