feat: Add promo codes

payments.py

@@ -29,6 +29,10 @@ else:
     with open(path+'used.json', 'w') as f:
         json.dump(used, f, indent=4)
 
+if not os.path.exists(path+'promo.json'):
+    with open(path+'promo.json', 'w') as f:
+        json.dump([], f, indent=4)
+
 HNSaddress = os.getenv('ADDRESS')
 
 names = {
@@ -37,7 +41,7 @@ names = {
 }
 
 
-def generate_payment(name,email,mobile,address,country,cart,hns):
+def generate_payment(name,email,mobile,address,country,cart,hns,promo=False):
     # Generate a payment object
     payment_id = generate_payment_id()
     if payment_id == "ERROR":
@@ -50,6 +54,11 @@ def generate_payment(name,email,mobile,address,country,cart,hns):
         if item['name'] in names:
             item['name'] = names[item['name']]
     
+    if promo:
+        promo = promo["id"]
+        usePromo(promo)
+
+
     payment = {
         "name": name,
         "email": email,
@@ -59,6 +68,7 @@ def generate_payment(name,email,mobile,address,country,cart,hns):
         "hns": hns,
         "ID": finalPrice,
         "cart": cart,
+        "promo": promo,
         "status": "Pending"
     }
     finalPriceDolarydoo = float(finalPrice) * 1000000
@@ -134,6 +144,68 @@ def generate_payment_id():
 
         if id > 99:
             return "ERROR"
+        
+
+def getPromo(code):
+    with open(path+'promo.json', 'r') as f:
+        promos = json.load(f)
+    for promo in promos:
+        if promo['id'] == code:
+            return promo
+    return False
+
+
+def getPromos():
+    with open(path+'promo.json', 'r') as f:
+        promos = json.load(f)
+    return promos
+
+def addPromo(id, constant, percent, uses):
+    with open(path+'promo.json', 'r') as f:
+        promos = json.load(f)
+
+    for promo in promos:
+        if promo['id'] == id:
+            return False
+        
+    
+    promos.append({
+        "id": id,
+        "constant": constant,
+        "percent": percent,
+        "uses": uses
+    })
+    with open(path+'promo.json', 'w') as f:
+        json.dump(promos, f, indent=4)
+    return True
+
+def deletePromo(id):
+    with open(path+'promo.json', 'r') as f:
+        promos = json.load(f)
+    for promo in promos:
+        if promo['id'] == id:
+            promos.remove(promo)
+            with open(path+'promo.json', 'w') as f:
+                json.dump(promos, f, indent=4)
+            return True
+    return False
+
+def usePromo(id):
+    with open(path+'promo.json', 'r') as f:
+        promos = json.load(f)
+    for promo in promos:
+        if promo['id'] == id:
+            if promo['uses'] == "1":
+                promos.remove(promo)
+            elif promo['uses'] == "-1":
+                return True
+            
+            uses = int(promo['uses'])
+            uses -= 1
+            promo['uses'] = str(uses)
+            with open(path+'promo.json', 'w') as f:
+                json.dump(promos, f, indent=4)
+            return True
 
 if __name__ == '__main__':
     for i in range(10):