From 666e946833a0071517fc21de0a3dd4647609248d Mon Sep 17 00:00:00 2001
From: def <def@dkc-hvac.com>
Date: Sun, 8 Mar 2026 07:29:19 +0000
Subject: [PATCH] Add v0.0.5 automatic client_code generation

---
 VERSION                    |  2 +-
 backend/app.py             | 41 +++++++++++++++++++++-----------------
 backend/utils.py           | 14 +++++++++++++
 templates/clients/new.html |  5 -----
 4 files changed, 38 insertions(+), 24 deletions(-)
 create mode 100644 backend/utils.py

diff --git a/VERSION b/VERSION
index 81340c7..bbdeab6 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.0.4
+0.0.5
diff --git a/backend/app.py b/backend/app.py
index 1319bbf..ddb6f5e 100644
--- a/backend/app.py
+++ b/backend/app.py
@@ -1,5 +1,6 @@
 from flask import Flask, render_template, request, redirect
 from db import get_db_connection
+from utils import generate_client_code
 
 app = Flask(
     __name__,
@@ -11,52 +12,55 @@ app = Flask(
 def index():
     return """
     <h1>OTB Billing</h1>
-    <p>Version 0.0.4</p>
+    <p>Version 0.0.5</p>
     <p><a href="/clients">Clients</a></p>
     """
 
-@app.route("/dbtest")
-def dbtest():
-    try:
-        conn = get_db_connection()
-        cursor = conn.cursor()
-        cursor.execute("SELECT NOW()")
-        result = cursor.fetchone()
-        conn.close()
-
-        return f"<h1>Database OK</h1><p>{result[0]}</p>"
-    except Exception as e:
-        return f"<h1>Database FAILED</h1><pre>{e}</pre>"
-
 @app.route("/clients")
 def clients():
+
     conn = get_db_connection()
     cursor = conn.cursor(dictionary=True)
-    cursor.execute("SELECT * FROM clients ORDER BY created_at DESC")
+
+    cursor.execute("SELECT * FROM clients ORDER BY id DESC")
     clients = cursor.fetchall()
+
     conn.close()
 
     return render_template("clients/list.html", clients=clients)
 
-@app.route("/clients/new", methods=["GET", "POST"])
+
+@app.route("/clients/new", methods=["GET","POST"])
 def new_client():
+
     if request.method == "POST":
-        client_code = request.form["client_code"]
+
         company_name = request.form["company_name"]
         contact_name = request.form["contact_name"]
         email = request.form["email"]
         phone = request.form["phone"]
 
         conn = get_db_connection()
+        cursor = conn.cursor(dictionary=True)
+
+        cursor.execute("SELECT MAX(id) as last_id FROM clients")
+        result = cursor.fetchone()
+
+        last_number = result["last_id"] if result["last_id"] else 0
+
+        client_code = generate_client_code(company_name, last_number)
+
         cursor = conn.cursor()
+
         cursor.execute(
             """
             INSERT INTO clients
             (client_code, company_name, contact_name, email, phone)
-            VALUES (%s, %s, %s, %s, %s)
+            VALUES (%s,%s,%s,%s,%s)
             """,
             (client_code, company_name, contact_name, email, phone)
         )
+
         conn.commit()
         conn.close()
 
@@ -64,5 +68,6 @@ def new_client():
 
     return render_template("clients/new.html")
 
+
 if __name__ == "__main__":
     app.run(host="0.0.0.0", port=5050)
diff --git a/backend/utils.py b/backend/utils.py
new file mode 100644
index 0000000..e432bbc
--- /dev/null
+++ b/backend/utils.py
@@ -0,0 +1,14 @@
+import re
+
+def generate_client_code(company_name, last_number):
+    # remove non letters
+    cleaned = re.sub(r'[^A-Za-z]', '', company_name.upper())
+
+    # first 5 characters
+    suffix = cleaned[:5]
+
+    number = last_number + 1
+
+    code = f"{number:04d}-{suffix}"
+
+    return code
diff --git a/templates/clients/new.html b/templates/clients/new.html
index bda022c..1cbea2e 100644
--- a/templates/clients/new.html
+++ b/templates/clients/new.html
@@ -10,11 +10,6 @@
 
 <form method="post">
 
-<p>
-Client Code<br>
-<input name="client_code">
-</p>
-
 <p>
 Company Name<br>
 <input name="company_name">