rebuild database structure, do single desk models

billard/models.py

@@ -23,6 +23,7 @@ class LocationData(models.Model):
         verbose_name = "Standortlog"
         verbose_name_plural = "Standortlogs"
 
+
 class Location(models.Model):
     users = models.ManyToManyField(User, related_name='locations', verbose_name="Benutzer")
     code = models.CharField(max_length=16, unique=True, verbose_name="Code")
@@ -77,6 +78,34 @@ class Client(models.Model):
         verbose_name = "Client"
         verbose_name_plural = "Clienten"
 
+
+class Desk(models.Model):
+    client = models.ForeignKey(Client, verbose_name='Client')
+    desk_no = models.IntegerField(verbose_name='Tischnummer')
+    name = models.CharField(max_length=32, blank=True, null=True, verbose_name='Tischbezeichnung')
+    enabled = models.BooleanField(verbose_name='Tisch aktiv')
+    prize = models.DecimalField(max_digits=5, decimal_places=2, blank=True, null=True, verbose_name="Normelpreis")
+    prize_hh = models.DecimalField(max_digits=5, decimal_places=2, blank=True, null=True,
+                                   verbose_name="Preis Happy Hour")
+
+    def accounting_for(self):
+        t = Accounting.objects.filter(client=self.client, desk_no=self.desk_no)[:3][::-1]
+        if t.__len__() > 0:
+            a = t[t.__len__() - 1]
+            if a.time_to is None:
+                prize = utils.get_prize_for(start=a.time_from, end=datetime.now(timezone.utc), pph=self.prize)
+                if prize != a.prize:
+                    a.prize = prize
+        return t
+
+    def __str__(self):
+        return '{}, {}'.format(self.client.uuid, self.name)
+
+    class Meta:
+        verbose_name = "Tisch"
+        verbose_name_plural = "Tische"
+
+
 class Accounting(models.Model):
     client = models.ForeignKey(Client, verbose_name="Client")
     desk_no = models.IntegerField(verbose_name="Tischnummer")