Remove conflict resolver and add dynamic payments

members/forms.py

@@ -3,12 +3,81 @@ from django.utils.translation import ugettext_lazy as _
 
 from members.models import Member, Payment, Request
 
+import csv
+import datetime
+import logging
+
+
+class CSVValidationError(Exception):
+    def __init__(self, form_errors):
+        self.form_errors = form_errors
+
 
 class MemberForm(forms.ModelForm):
 
     class Meta:
         model = Member
-        fields = ['first_name', 'last_name', 'email', 'AYY', 'jas', 'POR']
+        fields = ['first_name', 'last_name', 'email', 'POR', 'AYY', 'jas']
+
+    class ImportResult:
+        def __init__(self, members, payments):
+            self.members = members
+            self.payments = payments
+
+    def clean_email(self):
+        email = self.cleaned_data['email']
+
+        if Member.objects.filter(email=email).exists():
+            raise forms.ValidationError('Member with email "{}" already exists.'.format(email), code='exists')
+
+        return email
+
+    def clean_jas(self):
+        return bool(int(self.data['jas']))
+
+    def clean_AYY(self):
+        return bool(int(self.data['AYY']))
+
+    @staticmethod
+    def csv_to_models(data, payment_source='AYY'):
+        clean_data = data.strip().split('\n')
+        clean_data = [row.rstrip(',') for row in clean_data]
+        csv_reader = csv.DictReader(clean_data, fieldnames=MemberForm.Meta.fields)
+
+        members = []
+        payments = []
+        for line in csv_reader:
+            for key, value in line.items():
+                line[key] = value.strip()
+
+            email = line['email']
+            member_exists = False
+            if Member.objects.filter(email=email).exists():
+                member_exists = True
+
+            if not member_exists:
+                form = MemberForm(line)
+                if not form.is_valid():
+                    raise CSVValidationError(form.errors)
+
+                model = form.save(commit=False)
+                members.append(model)
+
+            else:
+                member = Member.objects.get(email=email)
+                payment_data = {
+                    'source': payment_source,
+                    'member': member.id,
+                    'date': datetime.datetime.now(),
+                }
+                form = PaymentForm(payment_data)
+                if not form.is_valid():
+                    raise CSVValidationError(form.errors)
+
+                model = form.save(commit=False)
+                payments.append(model)
+
+        return MemberForm.ImportResult(members, payments)
 
 
 class PaymentForm(forms.ModelForm):