Updated the template to print the correct interest information. Fixed logic in script to send correct interest information to the template. Added ability to do a test run to a different email address with a real data file (the debug flag replaces the email address with a hard coded one). Added an aborting checking that the payments are listed in order.

mortgage_template.py

@@ -114,6 +114,13 @@ def amortizeLoan(loan):
         payment_date = datetime.strptime((payment[0]), '%Y-%m-%d').date()
         payment_amount = Decimal(payment[1]).quantize(Decimal("1.00"))
         days_since_last_payment = (payment_date - interest_paid_through_date).days
+
+        #check for out of order payments, generally a sign of a data entry problem, especially years
+        if days_since_last_payment < 0:
+            print "Payment Number %s appears out of order.  The payment date '%s' is before the previous payment on '%s'." \
+                  % (payment_number, payment_date, interest_paid_through_date)
+            quit()
+
         new_interest = (days_since_last_payment * remaining_principal * daily_interest_rate).quantize(Decimal("0.00"))
         new_principal = payment_amount - new_interest
         interest_paid_through_date = payment_date
@@ -121,6 +128,7 @@ def amortizeLoan(loan):
         annual_interest = annual_interest + new_interest
         remaining_principal = remaining_principal - new_principal
 
+
         # create the payment record for the template to render
         payment_record = {}
         payment_record['year']=next_bill_date.year
@@ -143,6 +151,7 @@ def amortizeLoan(loan):
         if old_bill_date.month < 12:
             next_bill_date = date(year=old_bill_date.year, month=old_bill_date.month + 1, day=payment_day_of_month)
         else:
+            annual_interest = Decimal("0.00")
             next_bill_date = date(year=old_bill_date.year + 1, month=1, day = payment_day_of_month)
 
     loan["total_interest_paid_to_date"] = total_interest
@@ -278,10 +287,14 @@ def main():
     # at closing.  The first payment will incur interest from one month before the bill is due.
 
     # read in the file
+    test_flag = True
+    #test_flag = False
+    test_address = 'jkent3rd@yahoo.com'
+
     filename = "./testloan.json"
-    # filename = "./10Kloan.json"
-    # filename = "./dadmortgage.json"
-    # filename = "./brendamortgage.json"
+    #filename = "./10Kloan.json"
+    #filename = "./dadmortgage.json"
+    #filename = "./brendamortgage.json"
     #filename = "./greenfield_mortgage.json"
     template_filename = "statement.pdf.jinja"
 
@@ -299,8 +312,10 @@ def main():
     emailParameters = loan["email"]
     msg = generateEmail(emailParameters["from_address"], emailParameters["to_address"], emailParameters["subject"],
                         emailParameters["body"], pdfAttachment, report)
-    sendEmail(msg, emailParameters["from_address"], emailParameters["to_address"], emailParameters['password'])
-
+    if test_flag == False:
+        sendEmail(msg, emailParameters["from_address"], emailParameters["to_address"], emailParameters['password'])
+    else:
+        sendEmail(msg, emailParameters["from_address"], test_address, emailParameters['password'])
 
 if __name__ == '__main__':
     main()

statement.pdf.jinja

@@ -43,7 +43,7 @@
     <td align='right'> {{ "$%.2f"|format(item.interest_payment) }} </td>
     <td align='right'> {{ "$%.2f"|format(item.new_balance) }} </td>
 </tr>
-    {% if item.month == '12' or loop.last %}
+    {% if item.month == 12 or loop.last %}
 <tr><td colspan='8'"> Total interest paid in {{item.year}} is {{ "$%.2f"|format(item.annual_interest_to_date) }}.</td></tr>
     {% endif %}
 {% endfor %}

testloan.json

@@ -4,7 +4,7 @@
 "format": "html",
 "email": {
   "from_address": "jkent3rd@gmail.com",
-  "to_address": "jkent3rd@yahoo.com",
+  "to_address": "jkent3rd@gmail.com",
   "server": "smtp.gmail.com",
   "password": "pvyrbcnzrjoizprn",
   "template": "./template.txt",
@@ -38,7 +38,9 @@
    ["2018-09-26", "589.00"],
    ["2018-10-15", "0"],
    ["2018-11-29", "589.00"],
-   ["2018-12-31", "589.00"]
+   ["2018-12-31", "589.00"],
+   ["2019-01-28", "589.00"],
+   ["2019-03-15", "589.00"]
  ],
 "borrower": {
   "name": "Bear Houses, LLC",