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103 lines
2.3 KiB
103 lines
2.3 KiB
from datetime import datetime as dt
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from random import randint
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from django.utils import timezone
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class Unit(object):
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def __init__(self, name, nsecs):
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self.name = name
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self.plural = name + "s"
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self.nsecs = nsecs
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SECOND = Unit("second", 1)
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MINUTE = Unit("minute", 60)
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HOUR = Unit("hour", MINUTE.nsecs * 60)
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DAY = Unit("day", HOUR.nsecs * 24)
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WEEK = Unit("week", DAY.nsecs * 7)
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def format_duration(td):
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remaining_seconds = int(td.total_seconds())
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result = []
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for unit in (WEEK, DAY, HOUR, MINUTE):
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if unit == WEEK and remaining_seconds % unit.nsecs != 0:
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# Say "8 days" instead of "1 week 1 day"
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continue
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v, remaining_seconds = divmod(remaining_seconds, unit.nsecs)
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if v == 1:
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result.append("1 %s" % unit.name)
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elif v > 1:
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result.append("%d %s" % (v, unit.plural))
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return " ".join(result)
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def format_hms(td):
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total_seconds = int(td.total_seconds())
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result = []
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mins, secs = divmod(total_seconds, 60)
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h, mins = divmod(mins, 60)
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if h:
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result.append("%d h" % h)
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if h or mins:
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result.append("%d min" % mins)
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result.append("%s sec" % secs)
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return " ".join(result)
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def format_approx_duration(td):
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v = td.total_seconds()
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for unit in (DAY, HOUR, MINUTE, SECOND):
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if v >= unit.nsecs:
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vv = v // unit.nsecs
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if vv == 1:
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return "1 %s" % unit.name
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else:
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return "%d %s" % (vv, unit.plural)
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return ""
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def month_boundaries(months=3):
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result = []
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now = timezone.now()
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y, m = now.year, now.month
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for x in range(0, months):
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result.insert(0, dt(y, m, 1, tzinfo=timezone.utc))
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m -= 1
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if m == 0:
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m = 12
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y = y - 1
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return result
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def choose_next_report_date(now=None):
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""" Calculate the target date for the next monthly report.
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Monthly reports should get sent on 1st of each month, at a random
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time after 12PM UTC (so it's over the month boundary even in UTC-12).
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"""
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if now is None:
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now = timezone.now()
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h, m, s = randint(12, 23), randint(0, 59), randint(0, 59)
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if now.month == 12:
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return now.replace(now.year + 1, 1, 1, h, m, s)
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else:
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return now.replace(now.year, now.month + 1, 1, h, m, s)
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