diff --git a/main.py b/main.py
index 16d7a00..526c123 100644
--- a/main.py
+++ b/main.py
@@ -185,4 +185,93 @@ def menu_decrease_stock(menu_id, qty):
     c.execute("UPDATE menu SET stok=?, tersedia=? WHERE id=?", (newstok, tersedia, menu_id))
     conn.commit()
     conn.close()
-    return True, newstok
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+    return True, newstok
+
+
+
+# Bagian Promooo
+
+
+def promo_add(code, ptype, value, min_total=0):
+    conn = sqlite3.connect(DB_PATH)
+    c = conn.cursor()
+    c.execute("INSERT INTO promo (code,type,value,min_total) VALUES (?,?,?,?)", (code,ptype,value,min_total))
+    conn.commit()
+    conn.close()
+
+def promo_update(code, ptype, value, min_total=0):
+    conn = sqlite3.connect(DB_PATH)
+    c = conn.cursor()
+    c.execute("UPDATE promo SET type=?, value=?, min_total=? WHERE code=?", (ptype,value,min_total,code))
+    conn.commit()
+    conn.close()
+
+def promo_delete(code):
+    conn = sqlite3.connect(DB_PATH)
+    c = conn.cursor()
+    c.execute("DELETE FROM promo WHERE code=?", (code,))
+    conn.commit()
+    conn.close()
+
+def promo_list():
+    conn = sqlite3.connect(DB_PATH)
+    c = conn.cursor()
+    c.execute("SELECT code,type,value,min_total FROM promo ORDER BY code")
+    rows = c.fetchall()
+    conn.close()
+    return rows
+
+def promo_get(code):
+    conn = sqlite3.connect(DB_PATH)
+    c = conn.cursor()
+    c.execute("SELECT code,type,value,min_total FROM promo WHERE code=?", (code,))
+    r = c.fetchone()
+    conn.close()
+    return r
+
+def apply_discounts_and_promo(cart_items, promo_code=None):
+    """
+    cart_items: list of dicts: [{'menu_id':..,'qty':..}, ...]
+    returns breakdown: subtotal, item_discount_total, promo_code, promo_discount, total
+    - uses item_discount_pct from menu table
+    - promo_code can be percent or fixed, with min_total
+    """
+    conn = sqlite3.connect(DB_PATH)
+    c = conn.cursor()
+    subtotal = 0.0
+    item_discount_total = 0.0
+    for it in cart_items:
+        c.execute("SELECT harga,item_discount_pct FROM menu WHERE id=?", (it['menu_id'],))
+        r = c.fetchone()
+        if not r:
+            continue
+        price, item_disc_pct = r
+        qty = it.get('qty',1)
+        line = price * qty
+        subtotal += line
+        if item_disc_pct and item_disc_pct > 0:
+            item_discount_total += (price * qty) * (item_disc_pct/100.0)
+    promo_discount = 0.0
+    promo_applied = None
+    if promo_code:
+        c.execute("SELECT type,value,min_total FROM promo WHERE code=?", (promo_code,))
+        row = c.fetchone()
+        if row:
+            ptype, val, min_total = row
+            if subtotal >= min_total:
+                if ptype == 'percent':
+                    promo_discount = (subtotal - item_discount_total) * (val/100.0)
+                else:
+                    promo_discount = val
+                promo_applied = promo_code
+    total = subtotal - item_discount_total - promo_discount
+    if total < 0:
+        total = 0.0
+    conn.close()
+    return {
+        'subtotal': round(subtotal,2),
+        'item_discount': round(item_discount_total,2),
+        'promo_code': promo_applied,
+        'promo_discount': round(promo_discount,2),
+        'total': round(total,2)
+    }
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