@dallotech/nestjs-khalti

Introduction

This is simple wrapper for Khalti Payment. It supports ePayment Gateway(NEW) and transaction verification, but later more will be added. Just ping us or open pull request and contribute :)

Installation

$ npm i --save @dallotech/nestjs-khalti 
$ yarn add @dallotech/nestjs-khalti 

Importing module Async

import { KhaltiModule } from '@dallotech/nestjs-khalti';
@Module({
  imports: [
      KhaltiModule.registerAsync({
          imports: [ConfigModule],
          inject: [ConfigService],
          useFactory: (configService: ConfigService<AllConfig>) => ({
              secretKey: configService.get("----your key-----", {infer: true}),
              //optional if different key is required for EPayment flow
              secretKeyEPayment: configService.get("----your key-----", {infer: true}),
              paymentMode: configService.get("----your key-----", {infer: true}),
          })
      }),
  ],
  providers: [],
  exports: [],
})
export class YourModule {}

Calling Init Method to initialize payment for ePayment Gateway(NEW)

import { KhaltiService,KhaltiRequestDto } from '@dallotech/nestjs-khalti';

@Injectable()
export class YourService {
  constructor(private khaltiService: KhaltiService) {}
    
    async initPayment(){
        //...your code
        //amount needs to be in paisa for khalti
        const khaltiRequestDto: KhaltiRequestDto = {
            amount: 10*100,
            purchaseOrderId: 0,
            purchaseOrderName: 0,
            returnUrl: 'return url of frontend',
            websiteUrl: 'url of frontend'
        };
        const initData = await this.khaltiService.init(khaltiRequestDto);
        //...use initData where required as use case
    
  }
}

Calling LookUp Method for ePayment Gateway(NEW)

import { KhaltiService } from '@dallotech/nestjs-khalti';

@Injectable()
export class YourService {
  constructor(private khaltiService: KhaltiService) {}
    
    async verifyPayment(data){
        //...your code
        const {pidx} = data;
        const response = await this.khaltiService.verify({pidx});
        //..your code can verify the response data with your business logic and response format
  }
}

Calling transaction verification for Khalti

import { KhaltiService } from '@dallotech/nestjs-khalti';

@Injectable()
export class YourService {
  constructor(private khaltiService: KhaltiService) {}
    
    async verifyPayment(data){
        //...your code
        const {token,amount} = data;
        //amount needs to be in paisa for khalti
        const response = await this.khaltiService.verify({token,amount:amount*100});
        //..your code can verify the response data with your business logic and response format
  }
}

License

This package is MIT licensed.