88 lines
1.8 KiB
Python
88 lines
1.8 KiB
Python
import datetime
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import random
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import re
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import string
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import time
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from grant.settings import SITE_URL, ADMIN_SITE_URL, EXPLORER_URL
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epoch = datetime.datetime.utcfromtimestamp(0)
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RANDOM_CHARS = string.ascii_letters + string.digits
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def dt_from_ms(ms):
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return datetime.datetime.utcfromtimestamp(ms / 1000.0)
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def dt_to_ms(dt):
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delta = dt - epoch
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return int(delta.total_seconds() * 1000)
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def dt_to_unix(dt):
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return int(time.mktime(dt.timetuple()))
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def gen_random_code(length=32):
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return ''.join(
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[random.choice(RANDOM_CHARS) for n in range(length)]
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)
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def clean_random_code(code: str):
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return ''.join(c for c in code if c in RANDOM_CHARS)
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def make_url(path: str):
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return f'{SITE_URL}{path}'
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def make_admin_url(path: str):
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return f'{ADMIN_SITE_URL}{path}'
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def make_explore_url(txid: str):
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return EXPLORER_URL.replace('<txid>', txid)
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def is_email(email: str):
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return bool(re.match(r"[^@]+@[^@]+\.[^@]+", email))
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def from_zat(zat: int):
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return zat / 100000000
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def to_zat(zec: float):
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return zec * 100000000
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def make_preview(content: str, max_length: int):
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truncated = False
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# Show only the first line. Add ellipsis if there are more than two lines,
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# even if first line isn't truncated.
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preview = content.split('\n', 1)[0]
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if len(preview) != len(content):
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truncated = True
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# Truncate to max length
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if len(preview) > max_length:
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preview = preview[:max_length - 3]
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truncated = True
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return content + '...' if truncated else content
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def gen_random_id(model):
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min_id = 100000
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max_id = pow(2, 31) - 1
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random_id = random.randint(min_id, max_id)
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# If it already exists, generate a new one (recursively)
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existing = model.query.filter_by(id=random_id).first()
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if existing:
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random_id = gen_random_id(model)
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return random_id
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