From f259daced076bc11327b77052862dcb7a2c7a3be Mon Sep 17 00:00:00 2001
From: def <def@dkc-hvac.com>
Date: Sun, 8 Mar 2026 16:42:01 +0000
Subject: [PATCH] Add overdue detection and local time display

---
 VERSION                      |  2 +-
 backend/app.py               | 49 ++++++++++++++++++++++++++++++------
 templates/dashboard.html     |  2 ++
 templates/invoices/list.html | 11 ++++----
 templates/payments/list.html |  2 +-
 5 files changed, 51 insertions(+), 15 deletions(-)

diff --git a/VERSION b/VERSION
index 6e8bf73..17e51c3 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.1.0
+0.1.1
diff --git a/backend/app.py b/backend/app.py
index aab2a96..048bd9b 100644
--- a/backend/app.py
+++ b/backend/app.py
@@ -1,6 +1,8 @@
 from flask import Flask, render_template, request, redirect
 from db import get_db_connection
 from utils import generate_client_code, generate_service_code
+from datetime import datetime, timezone
+from zoneinfo import ZoneInfo
 
 app = Flask(
     __name__,
@@ -8,8 +10,41 @@ app = Flask(
     static_folder="../static",
 )
 
+LOCAL_TZ = ZoneInfo("America/Toronto")
+
+def fmt_local(dt_value):
+    if not dt_value:
+        return ""
+    if isinstance(dt_value, str):
+        try:
+            dt_value = datetime.fromisoformat(dt_value)
+        except ValueError:
+            return str(dt_value)
+    if dt_value.tzinfo is None:
+        dt_value = dt_value.replace(tzinfo=timezone.utc)
+    return dt_value.astimezone(LOCAL_TZ).strftime("%Y-%m-%d %I:%M:%S %p")
+
+def refresh_overdue_invoices():
+    conn = get_db_connection()
+    cursor = conn.cursor()
+    cursor.execute("""
+        UPDATE invoices
+        SET status = 'overdue'
+        WHERE due_at IS NOT NULL
+          AND due_at < UTC_TIMESTAMP()
+          AND status IN ('pending', 'partial')
+    """)
+    conn.commit()
+    conn.close()
+
+@app.template_filter("localtime")
+def localtime_filter(value):
+    return fmt_local(value)
+
 @app.route("/")
 def index():
+    refresh_overdue_invoices()
+
     conn = get_db_connection()
     cursor = conn.cursor(dictionary=True)
 
@@ -51,7 +86,7 @@ def dbtest():
         cursor.execute("SELECT NOW()")
         result = cursor.fetchone()
         conn.close()
-        return f"<h1>Database OK</h1><p>{result[0]}</p>"
+        return f"<h1>Database OK</h1><p>DB server time (UTC): {result[0]}</p><p>Displayed local time: {fmt_local(result[0])}</p>"
     except Exception as e:
         return f"<h1>Database FAILED</h1><pre>{e}</pre>"
 
@@ -174,6 +209,8 @@ def new_service():
 
 @app.route("/invoices")
 def invoices():
+    refresh_overdue_invoices()
+
     conn = get_db_connection()
     cursor = conn.cursor(dictionary=True)
     cursor.execute("""
@@ -269,7 +306,7 @@ def new_invoice():
                 status,
                 notes
             )
-            VALUES (%s, %s, %s, %s, %s, %s, NOW(), %s, 'pending', %s)
+            VALUES (%s, %s, %s, %s, %s, %s, UTC_TIMESTAMP(), %s, 'pending', %s)
         """, (
             client_id,
             service_id,
@@ -354,7 +391,6 @@ def new_payment():
             errors.append("CAD value at payment is required.")
 
         amount_value = None
-        cad_value = None
 
         if not errors:
             try:
@@ -420,13 +456,10 @@ def new_payment():
 
         if new_amount_paid >= float(invoice["total_amount"]):
             new_status = "paid"
-            paid_at_sql = "NOW()"
         elif new_amount_paid > 0:
             new_status = "partial"
-            paid_at_sql = "NULL"
         else:
             new_status = "pending"
-            paid_at_sql = "NULL"
 
         insert_cursor = conn.cursor()
         insert_cursor.execute("""
@@ -446,7 +479,7 @@ def new_payment():
                 received_at,
                 notes
             )
-            VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, 'confirmed', NOW(), %s)
+            VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, 'confirmed', UTC_TIMESTAMP(), %s)
         """, (
             invoice_id,
             client_id,
@@ -467,7 +500,7 @@ def new_payment():
                 UPDATE invoices
                 SET amount_paid = %s,
                     status = %s,
-                    paid_at = NOW()
+                    paid_at = UTC_TIMESTAMP()
                 WHERE id = %s
             """, (new_amount_paid, new_status, invoice_id))
         else:
diff --git a/templates/dashboard.html b/templates/dashboard.html
index df249b9..e2b60ef 100644
--- a/templates/dashboard.html
+++ b/templates/dashboard.html
@@ -28,5 +28,7 @@
 </tr>
 </table>
 
+<p>Displayed times are shown in America/Toronto.</p>
+
 </body>
 </html>
diff --git a/templates/invoices/list.html b/templates/invoices/list.html
index cf04fba..a4ad047 100644
--- a/templates/invoices/list.html
+++ b/templates/invoices/list.html
@@ -12,31 +12,32 @@
 <p><a href="/invoices/new">Create Invoice</a></p>
 
 <table border="1" cellpadding="6">
-
 <tr>
 <th>ID</th>
 <th>Invoice</th>
 <th>Client</th>
 <th>Currency</th>
 <th>Total</th>
+<th>Paid</th>
+<th>Remaining</th>
 <th>Status</th>
 <th>Issued</th>
 <th>Due</th>
 </tr>
 
 {% for i in invoices %}
-
 <tr>
 <td>{{ i.id }}</td>
 <td>{{ i.invoice_number }}</td>
 <td>{{ i.client_code }} - {{ i.company_name }}</td>
 <td>{{ i.currency_code }}</td>
 <td>{{ i.total_amount }}</td>
+<td>{{ i.amount_paid }}</td>
+<td>{{ i.total_amount - i.amount_paid }}</td>
 <td>{{ i.status }}</td>
-<td>{{ i.issued_at }}</td>
-<td>{{ i.due_at }}</td>
+<td>{{ i.issued_at|localtime }}</td>
+<td>{{ i.due_at|localtime }}</td>
 </tr>
-
 {% endfor %}
 
 </table>
diff --git a/templates/payments/list.html b/templates/payments/list.html
index 0eea42f..7ade56e 100644
--- a/templates/payments/list.html
+++ b/templates/payments/list.html
@@ -33,7 +33,7 @@
     <td>{{ p.payment_amount }}</td>
     <td>{{ p.cad_value_at_payment }}</td>
     <td>{{ p.reference }}</td>
-    <td>{{ p.received_at }}</td>
+    <td>{{ p.received_at|localtime }}</td>
 </tr>
 {% endfor %}