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from datetime import datetime
from django.contrib.auth.models import User
from pytask.taskapp.models import Notification, RIGHTS_CHOICES
def create_notification(role, sent_to, sent_from=None, reply=None, task=None, remarks=None, requested_by=None, receiving_user=None, pynts=None):
"""
creates a notification based on the passed arguments.
role: role of the notification - look at choices in models
sent_to: a user to which the notification is to be sent
sent_from : a user from which the message has originated
A user who approves/rejects in case of request
A mentor who closes/complets the task
reply: A boolean
task: a task if applicable
requested_by: a user makes the request
A mentor who assigns credits in case of pynts
A mentor who requests to act as a mentor
remarks: any remarks for rejecting
receiving_user: user receiving pynts
pynts: the obvious
"""
notification = Notification(sent_date = datetime.now())
notification.role = role
notification.sent_to = sent_to
notification.save()
if role == "PY":
notification.sent_from = sent_from
notification.task = task
notification.pynts = pynts
task_url= '<a href="/task/view/tid=%s">%s</a>'%(task.id, task.title)
credits_url = '<a href="/task/assigncredits/tid=%s">%s</a>'%(task.id, "click here")
mentor_url = '<a href="/user/view/uid=%s">%s</a>'%(requested_by.id, requested_by.username)
admin_url = '<a href="/user/view/uid=%s">%s</a>'%(sent_from.id, sent_from.username)
user_url = '<a href="/user/view/uid=%s">%s</a>'%(receiving_user.id, receiving_user.username)
if reply:
notification.sub = "Approved request for assign of credits for %s"%task.title[:20]
notification.message = """ Request made by %s to assign %s pynts to %s for the task %s has been approved by %s<br />
%s if you want the view/assign pynts page of the task.<br />"""%(mentor_url, pynts, user_url, task_url, admin_url, credits_url)
else:
notification.sub = "Rejected request for assign of credits for %s"%task.title[:20]
notification.message = """ Request made by %s to assign %s pynts to %s for the task %s has been rejected by %s.<br /> """%(mentor_url, pynts, user_url, task_url, admin_url)
if remarks:
notification.remarks = remarks
notification.message += "Reason: %s<br />"%remarks
notification.message += "<br />"
elif role == "MT":
task_url= '<a href="/task/view/tid=%s">%s</a>'%(task.id, task.title)
requested_mentor_url = '<a href="/user/view/uid=%s">%s</a>'%(requested_by.id, requested_by.username)
new_mentor = sent_from
new_mentor_url = '<a href="/user/view/uid=%s">%s</a>'%(new_mentor.id, new_mentor.username)
if reply:
notification.sub = "New mentor for the task %s"%task.title[:20]
notification.message = "%s has accepted the request made by %s, asking him act as a mentor for the task %s<br />"%(new_mentor_url, requested_mentor_url, task_url)
notification.message += "He can be contacted on %s"%new_mentor.email
else:
notification.sub = "%s rejected request to act as a mentor"%new_mentor.username
notification.message = "%s has rejected your request asking him to act as a mentor for %s.<br />"%(new_mentor_url, task_url)
if remarks:
notification.message += "Remarks: %s<br />"%remarks
elif role in ["DV", "MG", "AD"]:
accepting_user = sent_from
user_url = '<a href="/user/view/uid=%s">%s</a>'%(accepting_user.id, accepting_user.username) ## i mean the user who has accepted it
requested_by_url = '<a href="/user/view/uid=%s">%s</a>'%(requested_by.id, requested_by.username)
role_rights = dict(RIGHTS_CHOICES)[role]
role_learn_url = "/about/%s"%role_rights.lower()
a_or_an = "an" if role_rights == "AD" else "a"
if reply:
notification.sub = "New %s for the site"%role_rights
notification.message = "%s has accepted request made by %s asking him to act as %s %s for the website.<br />"%(user_url, requested_by_url, a_or_an, role_rights)
else:
notification.sub = "Rejected your request to act as %s"%role_rights
notification.message = "%s has rejected your request asking him to act as %s %s.<br />"%(user_url, a_or_an, role_rights)
if remarks:
notification.message += "Remarks: %s<br />"%remarks
elif role == "NT":
new_mentor = sent_to
mentor_learn_url = '<sup><a href="/about/mentor">learn more</a></sup>'
task_url= '<a href="/task/view/tid=%s">%s</a>'%(task.id, task.title)
notification.sub = "You are mentoring the task %s"%task.title[:20]
notification.message = "You have accepted to act as a mentor%s for the task %s.<br />"%(mentor_learn_url, task_url)
notification.message += " Here is a list of other mentors and their email addresses.<br /> <ul>"
for a_mentor in task.mentors.exclude(id=new_mentor.id):
notification.message += "<li> %s - %s </li>"%(a_mentor.username, a_mentor.email)
notification.message += "</ul>"
working_users = task.assigned_users.all()
if working_users:
notification.message += "List of users working on the task.<br />"
notification.message += "<ul>"
for a_user in working_users:
notification.message += "<li> %s - %s </li>"%(a_user.username, a_user.email)
notification.message += "</ul><br />"
notification.message += "Happy Mentoring."
elif role in ["CM", "CD"]:
mentor = sent_from
mentor_url = '<a href="/user/view/uid=%s">%s</a>'%(mentor.id, mentor.username)
task_url= '<a href="/task/view/tid=%s">%s</a>'%(task.id, task.title)
if role == "CM":
notification.sub = "%s has been marked complete"%task.title
notification.message = "The task %s has been marked complete by %s.<br />"%(task_url, mentor_url)
elif role == "CD":
notification.sub = "%s has been closed"%task.title
notification.message = "The task %s has been closed by %s.<br />"%(task_url, mentor_url)
if remarks:
notification.message += "<b>Remarks:</b> %s"%remarks
notification.save()
def mark_notification_read(notification_id):
"""
makes a notification identified by the notification_id read.
arguments:
notification_id - a number denoting the id of the Notification object
"""
try:
notification = Notification.objects.get(id = notification_id)
except Notification.DoesNotExist:
return False
notification.is_read = True
notification.save()
return True
def delete_notification(notification_id):
"""
deletes a notification identified by the notification_id.
arguments:
notification_id - a number denoting the id of the Notification object
"""
try:
notification = Notification.objects.get(id = notification_id)
except Notification.DoesNotExist:
return False
notification.is_deleted = True
notification.save()
return True
def get_notification(nid, user):
""" if notification exists, and belongs to the current user, return it.
else return None.
"""
user_notifications = user.notification_sent_to.filter(is_deleted=False).order_by('sent_date')
current_notifications = user_notifications.filter(id=nid)
if user_notifications:
current_notification = current_notifications[0]
try:
newer_notification = current_notification.get_next_by_sent_date(sent_to=user, is_deleted=False)
newest_notification = user_notifications.reverse()[0]
if newest_notification == newer_notification:
newest_notification = None
except Notification.DoesNotExist:
newest_notification, newer_notification = None, None
try:
older_notification = current_notification.get_previous_by_sent_date(sent_to=user, is_deleted=False)
oldest_notification = user_notifications[0]
if oldest_notification == older_notification:
oldest_notification = None
except:
oldest_notification, older_notification = None, None
return newest_notification, newer_notification, current_notification, older_notification, oldest_notification
else:
return None, None, None, None, None
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