Implement Booking Modification Interface

Jira: PHAROS-330

Users can change start date if it has not already occurred, and
can change end date, purpose, and both installer and scenario.
Standard checks apply similar to when initially creating a booking.

Change-Id: Ibae7fe91a58bd6e0741db065265c05c3823bdc27
Signed-off-by: Sawyer Bergeron <sbergeron@iol.unh.edu>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/booking/models.py b/src/booking/models.py
index 0bf5961..9156484 100644
--- a/src/booking/models.py
+++ b/src/booking/models.py
@@ -13,6 +13,8 @@ from django.contrib.auth.models import User
 from django.db import models
 from jira import JIRA
 from jira import JIRAError
+from django.utils.crypto import get_random_string
+import hashlib
 
 from dashboard.models import Resource
 
@@ -40,10 +42,12 @@ class Opsys(models.Model):
 
 class Booking(models.Model):
     id = models.AutoField(primary_key=True)
+    changeid = models.TextField(default='initial', blank=True, null=True)
     user = models.ForeignKey(User, models.CASCADE)  # delete if user is deleted
     resource = models.ForeignKey(Resource, models.PROTECT)
     start = models.DateTimeField()
     end = models.DateTimeField()
+    reset = models.BooleanField(default=False)
     jira_issue_id = models.IntegerField(null=True)
     jira_issue_status = models.CharField(max_length=50)
 
@@ -78,6 +82,10 @@ class Booking(models.Model):
         conflicting_dates = conflicting_dates.filter(start__lt=self.end)
         if conflicting_dates.count() > 0:
             raise ValueError('This booking overlaps with another booking')
+        if not self.changeid:
+            self.changeid = self.id
+        else:
+            self.changeid = hashlib.md5(self.changeid.encode() + get_random_string(length=32).encode()).hexdigest()
         return super(Booking, self).save(*args, **kwargs)
 
     def __str__(self):