Make payments dependency injected based on the .env settings

src/MistoxWebsite.Server/Controllers/PaymentMethods/IPayment.cs

@@ -4,8 +4,16 @@ namespace MistoxWebsite.Server.Controllers.Payment {
 
     public interface IPayment {
 
-        public Task<(bool, string)> Purchase(string OrderNumber, Account user, List<Cart> cart);
+        public static PaymentType _PaymentType;
+        public static string _EndpointSecret = "";
+
+        public Task<(bool, string)> TryGetCheckoutToken(string OrderNumber, Account user, List<Cart> cart);
+        public Task ValidatePurchase(string WebHookData, string Headers);
 
     }
 
+    public enum PaymentType {
+        StripeIntent
+    }
+
 }

src/MistoxWebsite.Server/Controllers/PaymentMethods/StripeIntents.cs

@@ -8,11 +8,11 @@ namespace MistoxWebsite.Server.Controllers {
 
         DatabaseService _databaseService;
 
-        public StripeIntent( DatabaseService databaseService ) {
+        public StripeIntent(DatabaseService databaseService) {
             _databaseService = databaseService;
         }
 
-        public async Task<(bool, string)> Purchase(string OrderNumber, Account user, List<Cart> cart) {
+        public async Task<(bool, string)> TryGetCheckoutToken(string OrderNumber, Account user, List<Cart> cart) {
             try {
                 // build Recipt and calculate Tax
                 var options = new Stripe.Tax.CalculationCreateOptions {
@@ -72,12 +72,71 @@ namespace MistoxWebsite.Server.Controllers {
                 Stripe.PaymentIntent x = await intentService.CreateAsync(paymentIntent);
 
                 return (true, x.ClientSecret);
-            } catch(Exception e) {
+            } catch (Exception e) {
                 return (false, e.ToString());
             }
 
         }
 
+        public async Task ValidatePurchase(string WebHookData, string Headers) {
+            Stripe.Event e = Stripe.EventUtility.ConstructEvent( WebHookData, Headers, IPayment._EndpointSecret );
+            if (e.Type == "payment_intent.succeeded") {
+                // Extract Data from payment confirm
+                Stripe.PaymentIntent intent = (Stripe.PaymentIntent)e.Data.Object;
+                string orderNumber = "";
+                int userID = 0;
+                List<int> productIDs = new List<int>();
+                int subtotal = 0;
+                int total = 0;
+
+                KeyValuePair<string, string>[] y = intent.Metadata.ToArray();
+                foreach (KeyValuePair<string, string> cur in y) {
+                    string val = cur.Key;
+                    if (val == "ordernumber") {
+                        orderNumber = cur.Value;
+                    }
+                    else if (val == "user") {
+                        userID = int.Parse(cur.Value);
+                    }
+                    else if (val == "products") {
+                        string[] products = cur.Value.Split(',');
+                        foreach (string product in products) {
+                            if (!string.IsNullOrEmpty(product)) {
+                                productIDs.Add(Convert.ToInt32(product));
+                            }
+                        }
+                    }
+                    else if (val == "subtotal") {
+                        subtotal = int.Parse(cur.Value);
+                    }
+                    else if (val == "total") {
+                        total = int.Parse(cur.Value);
+                    }
+                }
+
+                // Clear the cart
+                Account account = new() {
+                    ID = userID
+                };
+                await _databaseService.ClearCart(account);
+
+                // Add data to misox receipt
+                for (int i = 0; i < productIDs.Count; i++) {
+                    int product = productIDs[i];
+                    await _databaseService.NewReceipt(new Receipt {
+                        AccountID = userID,
+                        ProductID = product,
+                        ReceiptID = orderNumber,
+                        Time = DateTime.Now,
+                        TaxAmount = total - subtotal,
+                        TotalCost = total,
+                        LineItem = i
+                    });
+                }
+            } else {
+                Console.WriteLine("Unhandled event type: {0}", e.Type);
+            }
+        }
     }
 
 }