Add API route to generate member's application PDF forms

apiserver/apiserver/api/utils.py

@@ -1,9 +1,13 @@
-from rest_framework.exceptions import ValidationError
 import datetime
+import io
+from rest_framework.exceptions import ValidationError
 from dateutil import relativedelta
 from uuid import uuid4
 from PIL import Image
 from bleach.sanitizer import Cleaner
+from PyPDF2 import PdfFileWriter, PdfFileReader
+from reportlab.pdfgen import canvas
+from reportlab.lib.pagesizes import letter
 
 from django.db.models import Sum
 
@@ -239,3 +243,42 @@ def link_old_member(data, user):
     for t in training:
         t.user = user
         t.save()
+
+
+BLANK_FORM = 'misc/blank_member_form.pdf'
+def generate_application_pdf(member):
+    packet = io.BytesIO()
+
+    can = canvas.Canvas(packet, pagesize=letter)
+    can.drawRightString(580, 770, '{} {} ({})'.format(
+        member['first_name'],
+        member['last_name'],
+        member['id'],
+    ))
+    can.drawString(34, 683, member['first_name'])
+    can.drawString(218, 683, member['last_name'])
+    can.drawString(403, 683, member['preferred_name'])
+    can.drawString(34, 654, member['street_address'])
+    can.drawString(275, 654, member['city'])
+    can.drawString(459, 654, member['postal_code'])
+    can.drawString(34, 626, member['email'])
+    can.drawString(332, 626, member['phone'])
+    can.drawString(34, 570, member['emergency_contact_name'])
+    can.drawString(332, 570, member['emergency_contact_phone'])
+    can.save()
+
+    packet.seek(0)
+    new_pdf = PdfFileReader(packet)
+    existing_pdf = PdfFileReader(open(BLANK_FORM, 'rb'))
+    output = PdfFileWriter()
+    page = existing_pdf.getPage(0)
+    page.mergePage(new_pdf.getPage(0))
+    output.addPage(page)
+    page = existing_pdf.getPage(1)
+    output.addPage(page)
+    page = existing_pdf.getPage(2)
+    output.addPage(page)
+
+    outputStream = io.BytesIO()
+    output.write(outputStream)
+    return outputStream

apiserver/apiserver/api/views.py

@@ -1,6 +1,8 @@
 from django.contrib.auth.models import User, Group
 from django.shortcuts import get_object_or_404
 from django.db.models import Max
+from django.http import HttpResponse
+from django.core.files.base import File
 from rest_framework import viewsets, views, mixins, generics, exceptions
 from rest_framework.decorators import action
 from rest_framework.permissions import BasePermission, IsAuthenticated, SAFE_METHODS
@@ -110,7 +112,7 @@ class MemberViewSet(Base, Retrieve, Update):
     def pause(self, request, pk=None):
         if not is_admin_director(self.request.user):
             raise exceptions.PermissionDenied()
-        member = get_object_or_404(self.queryset, pk=pk)
+        member = self.get_object()
         member.paused_date = datetime.date.today()
         member.save()
         return Response(200)
@@ -119,13 +121,20 @@ class MemberViewSet(Base, Retrieve, Update):
     def unpause(self, request, pk=None):
         if not is_admin_director(self.request.user):
             raise exceptions.PermissionDenied()
-        member = get_object_or_404(self.queryset, pk=pk)
+        member = self.get_object()
         member.current_start_date = datetime.date.today()
         member.paused_date = None
         member.save()
         utils.tally_membership_months(member)
         return Response(200)
 
+    @action(detail=True)
+    def forms(self, request, pk=None):
+        member = self.get_object()
+        serializer = self.get_serializer(member)
+        form = utils.generate_application_pdf(serializer.data)
+        return HttpResponse(File(form), content_type='application/pdf')
+
 
 class CardViewSet(Base, Create, Retrieve, Update, Destroy):
     permission_classes = [AllowMetadata | IsAuthenticated, IsObjOwnerOrAdmin]

apiserver/docs/source/api.rst

@@ -343,6 +343,18 @@ Pausing / Unpausing Member
 
     :status 200:
 
+Member PDF Forms
+++++++++++++++++
+
+.. http:get:: /members/(id)/forms/
+
+    Generate member's application PDF forms. Users can only view their own,
+    admins can view anyone's.
+
+    :param id:
+
+    :requestheader Authorization: ``Token <token>``
+
 
 Search
 ------

apiserver/requirements.txt

@@ -23,10 +23,12 @@ Pillow==7.0.0
 pycparser==2.19
 Pygments==2.5.2
 pyparsing==2.4.6
+PyPDF2==1.26.0
 python-dateutil==2.8.1
 python-Levenshtein==0.12.0
 python3-openid==3.1.0
 pytz==2019.3
+reportlab==3.5.34
 requests==2.22.0
 requests-oauthlib==1.3.0
 six==1.13.0