Add Stripe donation flow

2026-07-19 22:26:33 -05:00
parent f12904bf73
commit dec5e74aa7
30 changed files with 1053 additions and 1 deletions
@@ -0,0 +1,75 @@
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+
+namespace QuestionsApi.Models;
+
+public static class DonationStatus
+{
+    public const string Pending = "pending";
+    public const string Paid = "paid";
+    public const string Failed = "failed";
+    public const string Expired = "expired";
+}
+
+public sealed class Donation
+{
+    [BsonId, BsonRepresentation(BsonType.ObjectId)] public string? Id { get; set; }
+    public string UserId { get; set; } = "";
+    public long AmountCents { get; set; }
+    public string Currency { get; set; } = "usd";
+    public string Status { get; set; } = DonationStatus.Pending;
+    [BsonIgnoreIfNull] public string? StripeCheckoutSessionId { get; set; }
+    public string StripePaymentIntentId { get; set; } = "";
+    public string LastStripeEventId { get; set; } = "";
+    public string FailureCode { get; set; } = "";
+    public DateTime CreatedUtc { get; set; } = DateTime.UtcNow;
+    public DateTime UpdatedUtc { get; set; } = DateTime.UtcNow;
+    public DateTime? PaidUtc { get; set; }
+}
+
+public sealed class CreateDonationCheckoutRequest
+{
+    public long AmountCents { get; set; }
+}
+
+public sealed class DonationCheckoutResponse
+{
+    public string DonationId { get; set; } = "";
+    public string CheckoutUrl { get; set; } = "";
+    public long AmountCents { get; set; }
+    public string Currency { get; set; } = "usd";
+    public string Status { get; set; } = DonationStatus.Pending;
+}
+
+public sealed class DonationStatusResponse
+{
+    public string DonationId { get; set; } = "";
+    public long AmountCents { get; set; }
+    public string Currency { get; set; } = "usd";
+    public string Status { get; set; } = DonationStatus.Pending;
+    public DateTime CreatedUtc { get; set; }
+    public DateTime? PaidUtc { get; set; }
+
+    public static DonationStatusResponse FromModel(Donation donation) => new()
+    {
+        DonationId = donation.Id ?? "",
+        AmountCents = donation.AmountCents,
+        Currency = donation.Currency,
+        Status = donation.Status,
+        CreatedUtc = donation.CreatedUtc,
+        PaidUtc = donation.PaidUtc
+    };
+}
+
+public static class DonationValidator
+{
+    public const long MinimumAmountCents = 500;
+    public const long MaximumAmountCents = 1_000_000;
+
+    public static string? ValidateAmount(long amountCents) => amountCents switch
+    {
+        < MinimumAmountCents => "amountCents must be at least 500",
+        > MaximumAmountCents => "amountCents must be no more than 1000000",
+        _ => null
+    };
+}