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# -*- coding: utf-8 -*-
import datetime
import json
import re
from functools import total_ordering
from math import floor
from dateutil.parser import parse
from bvggrabber.utils.format import fullformat, timeformat
def compute_remaining(start, end):
if not isinstance(start, datetime.datetime):
raise ValueError("start needs to be a datetime.datetime")
if not isinstance(end, datetime.datetime):
raise ValueError("start needs to be a datetime.datetime")
seconds = (end - start).total_seconds()
return datetime.timedelta(minutes=floor(seconds / 60)).total_seconds()
class QueryApi(object):
def __init__(self):
pass
def call(self):
raise NotImplementedError("The inheriting class needs to implement "
"the call() method!")
@total_ordering
class Departure(object):
def __init__(self, start, end, when, line, since=None):
if since is None:
self.now = datetime.datetime.now()
else:
self.now = since
self.start = start
self.end = end
self.line = line
if isinstance(when, (int, float)):
# We assume to get a UNIX / POSIX timestamp
self.when = datetime.datetime.fromtimestamp(when)
elif isinstance(when, str):
self.when = parse(re.sub('[\s*]$', '', when))
#if (self.when - self.now).total_seconds() < -60:
# self.when = self.when + timedelta(days=1)
elif isinstance(when, datetime.datetime):
self.when = when
else:
raise TypeError("when must be a valid datetime, timestamp or "
"string!")
@property
def remaining(self):
return compute_remaining(self.now, self.when)
@property
def to_json(self):
return json.dumps({'start': self.start,
'end': self.end,
'line': self.line,
'now_full': fullformat(self.now),
'now_hour': timeformat(self.now),
'when_full': fullformat(self.when),
'when_hour': timeformat(self.when),
'remaining': round(self.remaining)})
def __eq__(self, other):
"""Two departures are assumed to be equal iff their remaining time
and their destination are equal.
Right now we do **not** considering the start or line, since that would
require some kind of geo location in order to define a *total order*.
"""
return ((self.remaining, self.end.lower()) ==
(other.remaining, other.end.lower()))
def __lt__(self, other):
"""A departure is assumed to be less than another iff its remaining
time is less than the remaining time of the other departure.
Right now we do **not** considering the start, end or line, since that
would require some kind of geo location in order to define a *total
order*.
"""
return (self.remaining < other.remaining)
def __str__(self):
return "Start: %s, End: %s, when: %s, now: %s, line: %s" % (
self.start, self.end, timeformat(self.when),
timeformat(self.now), self.line)
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