[AC-1800] PayPal IPN Refactor (#3619)

* Add more logging to PayPal IPN webhook * Add PayPalIPNClient tests * Add PayPalControllerTests --------- Co-authored-by: aelinton <95626935+aelinton@users.noreply.github.com>
2026-01-02 16:43:25 +00:00 · 2024-01-30 09:03:50 -05:00
parent 6ebb408a97
commit cc2a81ae3f
19 changed files with 1546 additions and 326 deletions
--- a/src/Billing/Models/PayPalIPNTransactionModel.cs
+++ b/src/Billing/Models/PayPalIPNTransactionModel.cs
@@ -0,0 +1,110 @@
+using System.Globalization;
+using System.Runtime.InteropServices;
+using System.Web;
+
+namespace Bit.Billing.Models;
+
+public class PayPalIPNTransactionModel
+{
+    public string TransactionId { get; }
+    public string TransactionType { get; }
+    public string ParentTransactionId { get; }
+    public string PaymentStatus { get; }
+    public string PaymentType { get; }
+    public decimal MerchantGross { get; }
+    public string MerchantCurrency { get; }
+    public string ReceiverId { get; }
+    public DateTime PaymentDate { get; }
+    public Guid? UserId { get; }
+    public Guid? OrganizationId { get; }
+    public bool IsAccountCredit { get; }
+
+    public PayPalIPNTransactionModel(string formData)
+    {
+        var queryString = HttpUtility.ParseQueryString(formData);
+
+        var data = queryString
+            .AllKeys
+            .ToDictionary(key => key, key => queryString[key]);
+
+        TransactionId = Extract(data, "txn_id");
+        TransactionType = Extract(data, "txn_type");
+        ParentTransactionId = Extract(data, "parent_txn_id");
+        PaymentStatus = Extract(data, "payment_status");
+        PaymentType = Extract(data, "payment_type");
+
+        var merchantGross = Extract(data, "mc_gross");
+        if (!string.IsNullOrEmpty(merchantGross))
+        {
+            MerchantGross = decimal.Parse(merchantGross);
+        }
+
+        MerchantCurrency = Extract(data, "mc_currency");
+        ReceiverId = Extract(data, "receiver_id");
+
+        var paymentDate = Extract(data, "payment_date");
+        PaymentDate = ToUTCDateTime(paymentDate);
+
+        var custom = Extract(data, "custom");
+
+        if (string.IsNullOrEmpty(custom))
+        {
+            return;
+        }
+
+        var metadata = custom.Split(',')
+            .Where(field => !string.IsNullOrEmpty(field) && field.Contains(':'))
+            .Select(field => field.Split(':'))
+            .ToDictionary(parts => parts[0], parts => parts[1]);
+
+        if (metadata.TryGetValue("user_id", out var userIdStr) &&
+            Guid.TryParse(userIdStr, out var userId))
+        {
+            UserId = userId;
+        }
+
+        if (metadata.TryGetValue("organization_id", out var organizationIdStr) &&
+            Guid.TryParse(organizationIdStr, out var organizationId))
+        {
+            OrganizationId = organizationId;
+        }
+
+        IsAccountCredit = custom.Contains("account_credit:1");
+    }
+
+    private static string Extract(IReadOnlyDictionary<string, string> data, string key)
+    {
+        var success = data.TryGetValue(key, out var value);
+        return success ? value : null;
+    }
+
+    private static DateTime ToUTCDateTime(string input)
+    {
+        if (string.IsNullOrEmpty(input))
+        {
+            return default;
+        }
+
+        var success = DateTime.TryParseExact(input,
+            new[]
+            {
+                "HH:mm:ss dd MMM yyyy PDT",
+                "HH:mm:ss dd MMM yyyy PST",
+                "HH:mm:ss dd MMM, yyyy PST",
+                "HH:mm:ss dd MMM, yyyy PDT",
+                "HH:mm:ss MMM dd, yyyy PST",
+                "HH:mm:ss MMM dd, yyyy PDT"
+            }, CultureInfo.InvariantCulture, DateTimeStyles.None, out var dateTime);
+
+        if (!success)
+        {
+            return default;
+        }
+
+        var pacificTime = RuntimeInformation.IsOSPlatform(OSPlatform.Windows)
+            ? TimeZoneInfo.FindSystemTimeZoneById("Pacific Standard Time")
+            : TimeZoneInfo.FindSystemTimeZoneById("America/Los_Angeles");
+
+        return TimeZoneInfo.ConvertTimeToUtc(dateTime, pacificTime);
+    }
+}