feat(analytics): Add overdue balance endpoint

gross_revenue.go

@@ -24,6 +24,7 @@ type GrossRevenue struct {
 	Month          string   `json:"month,omitempty"`
 	AmountCents    int      `json:"amount_cents,omitempty"`
 	AmountCurrency Currency `json:"currency,omitempty"`
+	InvoicesCount  int      `json:"invoices_count,omitempty"`
 }
 
 func (c *Client) GrossRevenue() *GrossRevenueRequest {

overdue_balance.go

@@ -0,0 +1,63 @@
+package lago
+
+import (
+	"context"
+	"encoding/json"
+)
+
+type OverdueBalanceRequest struct {
+	client *Client
+}
+
+type OverdueBalanceListInput struct {
+	AmountCurrency     string `json:"currency,omitempty"`
+	ExternalCustomerId string `json:"external_customer_id,omitempty"`
+	Months             int    `json:"months,omitempty,string"`
+}
+
+type OverdueBalanceResult struct {
+	OverdueBalance  *OverdueBalance  `json:"overdue_balance,omitempty"`
+	OverdueBalances []OverdueBalance `json:"overdue_balances,omitempty"`
+}
+
+type OverdueBalance struct {
+	Month          string   `json:"month,omitempty"`
+	AmountCents    int      `json:"amount_cents,omitempty"`
+	AmountCurrency Currency `json:"currency,omitempty"`
+}
+
+func (c *Client) OverdueBalance() *OverdueBalanceRequest {
+	return &OverdueBalanceRequest{
+		client: c,
+	}
+}
+
+func (adr *OverdueBalanceRequest) GetList(ctx context.Context, OverdueBalanceListInput *OverdueBalanceListInput) (*OverdueBalanceResult, *Error) {
+	jsonQueryparams, err := json.Marshal(OverdueBalanceListInput)
+	if err != nil {
+		return nil, &Error{Err: err}
+	}
+
+	queryParams := make(map[string]string)
+	if err = json.Unmarshal(jsonQueryparams, &queryParams); err != nil {
+		return nil, &Error{Err: err}
+	}
+
+	clientRequest := &ClientRequest{
+		Path:        "analytics/overdue_balance",
+		QueryParams: queryParams,
+		Result:      &OverdueBalanceResult{},
+	}
+
+	result, clientErr := adr.client.Get(ctx, clientRequest)
+	if clientErr != nil {
+		return nil, clientErr
+	}
+
+	OverdueBalanceResult, ok := result.(*OverdueBalanceResult)
+	if !ok {
+		return nil, &ErrorTypeAssert
+	}
+
+	return OverdueBalanceResult, nil
+}