src/workflow/views.py

   1 ##############################################################################
   2 # Copyright (c) 2018 Parker Berberian, Sawyer Bergeron, and others.
   3 #
   4 # All rights reserved. This program and the accompanying materials
   5 # are made available under the terms of the Apache License, Version 2.0
   6 # which accompanies this distribution, and is available at
   7 # http://www.apache.org/licenses/LICENSE-2.0
   8 ##############################################################################
   9
  10
  11 from django.http import HttpResponse, HttpRequest, HttpResponseGone
  12 from django.urls import reverse
  13 from django.shortcuts import render, redirect
  14 from django import forms
  15
  16 import uuid
  17
  18 from workflow.forms import *
  19 from workflow.workflow_manager import *
  20
  21 import logging
  22 logger = logging.getLogger(__name__)
  23
  24
  25 def attempt_auth(request):
  26     try:
  27         manager = ManagerTracker.managers[request.session['manager_session']]
  28
  29         return manager
  30
  31     except KeyError:
  32         return None
  33
  34 def delete_session(request):
  35     try:
  36         manager = ManagerTracker.managers[request.session['manager_session']]
  37         del ManagerTracker.managers[request.session['manager_session']]
  38         return HttpResponse('')
  39     except KeyError:
  40         return None
  41
  42 def step_view(request):
  43     manager = attempt_auth(request)
  44     if not manager:
  45         #no manager found, redirect to "lost" page
  46         return no_workflow(request)
  47     if request.GET.get('step') is not None:
  48         manager.goto(int(request.GET.get('step')))
  49     return manager.render(request)
  50
  51 def manager_view(request):
  52     manager = attempt_auth(request)
  53
  54     if not manager:
  55         return HttpResponseGone("No session found that relates to current request")
  56
  57     if request.method == 'GET': #no need for this statement if only intercepting post requests
  58
  59         #return general context for viewport page
  60         return manager.status(request)
  61
  62     if request.method == 'POST':
  63         if request.POST.get('add') is not None:
  64             logger.debug("add found")
  65             target_id = None
  66             if 'target' in request.POST:
  67                 target_id=int(request.POST.get('target'))
  68             manager.add_workflow(workflow_type=int(request.POST.get('add')), target_id=target_id)
  69         elif request.POST.get('edit') is not None and request.POST.get('edit_id') is not None:
  70             logger.debug("edit found")
  71             manager.add_workflow(workflow_type=request.POST.get('edit'), edit_object=int(request.POST.get('edit_id')))
  72         elif request.POST.get('cancel') is not None:
  73             mgr = ManagerTracker.managers[request.session['manager_session']]
  74             del ManagerTracker.managers[request.session['manager_session']]
  75             del mgr
  76
  77     return manager.status(request)
  78
  79 def viewport_view(request):
  80     if not request.user.is_authenticated:
  81         return login(request)
  82
  83     manager = attempt_auth(request)
  84     if manager is None:
  85         return no_workflow(request)
  86
  87     if  request.method == 'GET':
  88         return render(request, 'workflow/viewport-base.html')
  89     else:
  90         pass
  91
  92 def create_session(wf_type, request):
  93     wf = int(wf_type)
  94     smgr = SessionManager(request=request)
  95     smgr.add_workflow(workflow_type=wf, target_id=request.POST.get("target"))
  96     manager_uuid = uuid.uuid4().hex
  97     ManagerTracker.getInstance().managers[manager_uuid] = smgr
  98
  99     return manager_uuid
 100
 101 def no_workflow(request):
 102
 103     logger.debug("There is no active workflow")
 104
 105     return render(request, 'workflow/no_workflow.html', {'title': "Not Found"})
 106
 107 def login(request):
 108     return render(request, "dashboard/login.html", {'title': 'Authentication Required'})