paystack-nestjs/lib/payload.service.js

A library for integrating Paystack with NestJS. Supports webhooks

"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __param = (this && this.__param) || function (paramIndex, decorator) {
    return function (target, key) { decorator(target, key, paramIndex); }
};
var PaystackPayloadService_1;
Object.defineProperty(exports, "__esModule", { value: true });
exports.PaystackPayloadService = void 0;
const common_1 = require("@nestjs/common");
const decorators_1 = require("./decorators");
const crypto_1 = require("crypto");
let PaystackPayloadService = PaystackPayloadService_1 = class PaystackPayloadService {
    constructor(paystackModuleConfig) {
        this.paystackModuleConfig = paystackModuleConfig;
        this.logger = new common_1.Logger(PaystackPayloadService_1.name);
    }
    tryHydratePayload(signature, payload, validator = crypto_1.createHmac) {
        const secret = this.paystackModuleConfig.secretKey || '';
        const hash = validator('sha512', secret)
            .update(JSON.stringify(payload))
            .digest('hex');
        if (signature !== hash) {
            this.logger.error('Error validating Paystack event');
            throw new Error('Error validating Paystack event');
        }
        return payload;
    }
};
PaystackPayloadService = PaystackPayloadService_1 = __decorate([
    (0, common_1.Injectable)(),
    __param(0, (0, decorators_1.InjectPaystackModuleConfig)()),
    __metadata("design:paramtypes", [Object])
], PaystackPayloadService);
exports.PaystackPayloadService = PaystackPayloadService;
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