first commit

internal/invoice/model.go

@@ -0,0 +1,52 @@
+package invoice
+
+import (
+	"errors"
+	"time"
+
+	"github.com/noderunners/nip05api/internal/user"
+)
+
+type PendingInvoice struct {
+	PaymentHash      string
+	PaymentRequest   string
+	Username         string
+	Pubkey           string
+	SubscriptionType user.SubscriptionType
+	Years            int
+	AmountSats       int64
+	ExpiresAt        time.Time
+	Paid             bool
+	IsRenewal        bool
+	CreatedAt        time.Time
+	// TargetExpiresAt captures the user's new expiry value at first
+	// confirmation. Persisted so retries after a crash apply the same
+	// absolute value and stay idempotent. nil for lifetime.
+	TargetExpiresAt *time.Time
+	// TargetSet is true when target_expires_at has been written (even if
+	// the value is NULL for lifetime). Distinguishes "unset" from "lifetime".
+	TargetSet bool
+}
+
+type Status string
+
+const (
+	StatusPending Status = "pending"
+	StatusPaid    Status = "paid"
+	StatusExpired Status = "expired"
+)
+
+var (
+	ErrInvoiceNotFound = errors.New("invoice not found")
+	ErrLNbits          = errors.New("lnbits error")
+)
+
+func (p *PendingInvoice) Status() Status {
+	if p.Paid {
+		return StatusPaid
+	}
+	if time.Now().UTC().After(p.ExpiresAt) {
+		return StatusExpired
+	}
+	return StatusPending
+}