mirror of
https://github.com/getAlby/lndhub.go.git
synced 2025-12-20 14:14:47 +01:00
119 lines
4.1 KiB
Go
119 lines
4.1 KiB
Go
package controllers
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import (
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"fmt"
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"net/http"
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"strings"
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"github.com/getAlby/lndhub.go/lib"
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"github.com/getAlby/lndhub.go/lib/responses"
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"github.com/getAlby/lndhub.go/lib/service"
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"github.com/getAlby/lndhub.go/lnd"
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"github.com/getsentry/sentry-go"
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"github.com/labstack/echo/v4"
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)
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// PayInvoiceController : Pay invoice controller struct
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type PayInvoiceController struct {
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svc *service.LndhubService
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}
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func NewPayInvoiceController(svc *service.LndhubService) *PayInvoiceController {
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return &PayInvoiceController{svc: svc}
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}
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type PayInvoiceRequestBody struct {
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Invoice string `json:"invoice" validate:"required"`
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Amount interface{} `json:"amount" validate:"omitempty"`
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}
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type PayInvoiceResponseBody struct {
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RHash *lib.JavaScriptBuffer `json:"payment_hash,omitempty"`
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PaymentRequest string `json:"payment_request,omitempty"`
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PayReq string `json:"pay_req,omitempty"`
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Amount int64 `json:"num_satoshis,omitempty"`
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Description string `json:"description,omitempty"`
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DescriptionHashStr string `json:"description_hash,omitempty"`
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PaymentError string `json:"payment_error,omitempty"`
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PaymentPreimage *lib.JavaScriptBuffer `json:"payment_preimage,omitempty"`
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PaymentRoute *service.Route `json:"payment_route,omitempty"`
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}
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// PayInvoice : Pay invoice Controller
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func (controller *PayInvoiceController) PayInvoice(c echo.Context) error {
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userID := c.Get("UserID").(int64)
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reqBody := PayInvoiceRequestBody{}
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if err := c.Bind(&reqBody); err != nil {
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c.Logger().Errorf("Failed to load payinvoice request body: %v", err)
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return c.JSON(http.StatusBadRequest, responses.BadArgumentsError)
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}
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if err := c.Validate(&reqBody); err != nil {
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c.Logger().Errorf("Invalid payinvoice request body: %v", err)
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return c.JSON(http.StatusBadRequest, responses.BadArgumentsError)
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}
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paymentRequest := reqBody.Invoice
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paymentRequest = strings.ToLower(paymentRequest)
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decodedPaymentRequest, err := controller.svc.DecodePaymentRequest(c.Request().Context(), paymentRequest)
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if err != nil {
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c.Logger().Errorf("Invalid payment request: %v", err)
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sentry.CaptureException(err)
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return c.JSON(http.StatusBadRequest, responses.BadArgumentsError)
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}
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// TODO: zero amount invoices
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/*
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_, err = controller.svc.ParseInt(reqBody.Amount)
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if err != nil {
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return c.JSON(http.StatusBadRequest, echo.Map{
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"error": true,
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"code": 8,
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"message": "Bad arguments",
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})
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}
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*/
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lnPayReq := &lnd.LNPayReq{
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PayReq: decodedPaymentRequest,
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Keysend: false,
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}
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invoice, err := controller.svc.AddOutgoingInvoice(c.Request().Context(), userID, paymentRequest, lnPayReq)
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if err != nil {
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return err
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}
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currentBalance, err := controller.svc.CurrentUserBalance(c.Request().Context(), userID)
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if err != nil {
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return err
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}
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if currentBalance < invoice.Amount {
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c.Logger().Errorf("User does not have enough balance invoice_id=%v user_id=%v balance=%v amount=%v", invoice.ID, userID, currentBalance, invoice.Amount)
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return c.JSON(http.StatusBadRequest, responses.NotEnoughBalanceError)
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}
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sendPaymentResponse, err := controller.svc.PayInvoice(c.Request().Context(), invoice)
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if err != nil {
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c.Logger().Errorf("Payment failed: %v", err)
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sentry.CaptureException(err)
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return c.JSON(http.StatusBadRequest, echo.Map{
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"error": true,
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"code": 10,
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"message": fmt.Sprintf("Payment failed. Does the receiver have enough inbound capacity? (%v)", err),
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})
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}
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responseBody := &PayInvoiceResponseBody{}
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responseBody.RHash = &lib.JavaScriptBuffer{Data: sendPaymentResponse.PaymentHash}
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responseBody.PaymentRequest = paymentRequest
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responseBody.PayReq = paymentRequest
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responseBody.Amount = invoice.Amount
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responseBody.Description = invoice.Memo
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responseBody.DescriptionHashStr = invoice.DescriptionHash
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responseBody.PaymentError = sendPaymentResponse.PaymentError
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responseBody.PaymentPreimage = &lib.JavaScriptBuffer{Data: sendPaymentResponse.PaymentPreimage}
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responseBody.PaymentRoute = sendPaymentResponse.PaymentRoute
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return c.JSON(http.StatusOK, responseBody)
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}
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