Set up default currency accounts automatically (#72)

backend/product/providers/sendico/payments_transport.go

@@ -54,14 +54,15 @@ type paymentDTO struct {
 	Created time.Time       `json:"createdAt"`
 }
 type accountDTO struct {
-	ID         string            `json:"ledgerAccountRef"`
-	ScopeRef   string            `json:"organizationRef"`
-	Owner      string            `json:"ownerRef"`
-	Currency   string            `json:"currency"`
-	Type       string            `json:"accountType"`
-	LedgerRole string            `json:"role"`
-	Status     string            `json:"status"`
-	Metadata   map[string]string `json:"metadata"`
+	ID            string            `json:"ledgerAccountRef"`
+	ScopeRef      string            `json:"organizationRef"`
+	Owner         string            `json:"ownerRef"`
+	Currency      string            `json:"currency"`
+	Type          string            `json:"accountType"`
+	LedgerRole    string            `json:"role"`
+	Status        string            `json:"status"`
+	AllowNegative bool              `json:"allowNegative"`
+	Metadata      map[string]string `json:"metadata"`
 }
 type currencyDTO struct {
 	Code  string `json:"code"`
@@ -72,7 +73,7 @@ type balanceDTO struct {
 	Money moneyDTO `json:"balance"`
 }
 
-func (c *Client) paymentRequest(ctx context.Context, method, path string, payload, dst any) error {
+func (c *Client) paymentRequest(ctx context.Context, method, path string, payload, dst any, accepted ...int) error {
 	token, err := c.token()
 	if err != nil {
 		return err
@@ -98,7 +99,11 @@ func (c *Client) paymentRequest(ctx context.Context, method, path string, payloa
 	}
 	defer func() { _ = res.Body.Close() }()
 	// Never forward upstream errors, credentials, or arbitrary error bodies.
-	if res.StatusCode != http.StatusOK {
+	expected := http.StatusOK
+	if len(accepted) != 0 {
+		expected = accepted[0]
+	}
+	if res.StatusCode != expected {
 		return payments.Unavailable
 	}
 	var envelope struct {