timetracker/src/web/tracker/models.py

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from django.db import models
from datetime import datetime
from django.conf import settings
from zoneinfo import ZoneInfo
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class Game(models.Model):
name = models.CharField(max_length=255)
wikidata = models.CharField(max_length=50)
def __str__(self):
return self.name
class Purchase(models.Model):
game = models.ForeignKey("Game", on_delete=models.CASCADE)
platform = models.ForeignKey("Platform", on_delete=models.CASCADE)
date_purchased = models.DateField()
date_refunded = models.DateField(blank=True, null=True)
def __str__(self):
return f"{self.game} ({self.platform})"
class Platform(models.Model):
name = models.CharField(max_length=255)
group = models.CharField(max_length=255)
def __str__(self):
return self.name
class Session(models.Model):
purchase = models.ForeignKey("Purchase", on_delete=models.CASCADE)
timestamp_start = models.DateTimeField()
timestamp_end = models.DateTimeField(blank=True, null=True)
duration_manual = models.DurationField(blank=True, null=True)
duration_calculated = models.DurationField(blank=True, null=True)
note = models.TextField(blank=True, null=True)
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def __str__(self):
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mark = ", manual" if self.duration_manual != None else ""
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return f"{str(self.purchase)} {str(self.timestamp_start.date())} ({self.duration_any()}{mark})"
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def finish_now(self):
self.timestamp_end = datetime.now(ZoneInfo(settings.TIME_ZONE))
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def duration_seconds(self):
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if self.timestamp_end == None or self.timestamp_start == None:
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if self.duration_manual == None:
return 0
else:
value = self.duration_manual
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else:
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value = self.timestamp_end - self.timestamp_start
return value.total_seconds()
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def duration_formatted(self):
seconds = self.duration_seconds()
if seconds == 0:
return seconds
hours, remainder = divmod(seconds, 3600)
minutes = remainder // 60
if hours == 0 and minutes == 0:
return "less than a minute"
else:
hour_string = f"{int(hours)}h" if hours != 0 else ""
minute_string = f"{int(minutes)}m" if minutes != 0 else ""
return f"{hour_string}{minute_string}"
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def duration_any(self):
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return (
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self.duration_formatted()
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if self.duration_manual == None
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else self.duration_manual
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)
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def save(self, *args, **kwargs):
if self.timestamp_start != None and self.timestamp_end != None:
self.duration_calculated = self.timestamp_end - self.timestamp_start
super(Session, self).save(*args, **kwargs)