treasurer/internal/payment_provider/alchemy/provider.go

package alchemy

import (
	"context"
	"fmt"
	"gitea.pena/PenaSide/treasurer/internal/errors"
	"gitea.pena/PenaSide/treasurer/internal/models"
	"gitea.pena/PenaSide/treasurer/internal/models/alchemy"
	"gitea.pena/PenaSide/treasurer/internal/repository"
	"github.com/gofiber/fiber/v2"
	"go.uber.org/zap"
)

const ProviderName = "alchemy"

type Config struct {
	WalletAddress string `json:"walletAddress"`
}

type Provider struct {
	repository *repository.PaymentRepository
	logger     *zap.Logger
	config     *Config
}

type Deps struct {
	Repository *repository.PaymentMethodRepository
	Logger     *zap.Logger
	Config     *Config
}

func New(deps Deps) *Provider {
	return &Provider{
		logger: deps.Logger,
		config: deps.Config,
	}
}

func (p *Provider) GetName() string {
	return ProviderName
}

func (p *Provider) GetSupportedPaymentMethods() []models.PaymentType {
	return []models.PaymentType{models.PaymentTypeAlchemy}
}

func (p *Provider) CreateInvoice(ctx context.Context, req map[string]string) (string, errors.Error) {
	return "", nil
}

func (p *Provider) RegisterWebhookHandlers(router fiber.Router) {
	router.Post("/webhook/alchemy", p.handleWebhook)
}

func (p *Provider) handleWebhook(ctx *fiber.Ctx) error {
	var payload alchemy.AlchemyAddressActivityWebhook
	if err := ctx.BodyParser(&payload); err != nil {
		return ctx.Status(fiber.StatusBadRequest).SendString(fmt.Sprintf("failed to parse Alchemy webhook: %s", err.Error()))
	}

	for _, act := range payload.Event.Activity {
		if act.ToAddress != p.config.WalletAddress {
			continue
		}
		amountStr := fmt.Sprintf("%v", act.Value)
		payment, err := p.repository.FindByWalletAddressAndAmount(ctx.Context(), act.FromAddress, amountStr)
		if err != nil {
			if err.Type() == errors.ErrNotFound {
				return ctx.Status(fiber.StatusNotFound).SendString(fmt.Sprintf("payment not found: %s", err.Error()))
			}
			return ctx.Status(fiber.StatusInternalServerError).SendString(fmt.Sprintf("internal error while searching payment: %s", err.Error()))
		}
		_, err = p.repository.SetPaymentComplete(ctx.Context(), payment.PaymentID)
		if err != nil {
			return ctx.Status(fiber.StatusInternalServerError).SendString(fmt.Sprintf("failed to set payment complete: %s", err.Error()))
		}
	}
	return ctx.SendStatus(fiber.StatusOK)
}