Add Alchemy server callback endpoint and PayRecord class

Add functionality to check pay result sign, create page sign, and refresh token
 Implement a new `POST /pay/alchemy/cb` endpoint in `alchemy.controller.ts`
 `alchemyCallback` method now checks `PayRecord` status and pay sign before changing status and returning empty body
- `ROLE_ANON` added to `alchemyCallback` method and import of `role` changed in `alchemy.controller.ts`
- `PayRecord.ts` added to modules with `PayRecord` class and payment property enums

src/controllers/alchemy.controller.ts

@@ -1,9 +1,10 @@
 import logger from 'logger/logger'
-import BaseController from 'common/base.controller'
+import BaseController, { ROLE_ANON } from 'common/base.controller'
 import { ZError } from 'common/ZError'
-import { router } from 'decorators/router'
-import {createPageSign, refreshToken} from 'service/alchemy.svr'
+import { role, router } from 'decorators/router'
+import { checkPayResultSign, createPageSign, refreshToken } from 'service/alchemy.svr'
 import { generateKVStr } from 'utils/net.util'
+import { PayRecord, PayStatus } from 'modules/PayRecord'
 
 class AlchemyController extends BaseController {
   @router('post /pay/alchemy/buy')
@@ -19,18 +20,21 @@ class AlchemyController extends BaseController {
     const { id, email, accessToken } = tokenResult.data
     const redirectUrl = ''
     const callbackUrl = ''
-    const merchantOrderNo = ''
+    let record = new PayRecord({ account: user.id, address, chain, currency })
+    await record.save()
+    const merchantOrderNo = record.id
     let dataOrign: any = {
       token: accessToken,
       email,
       id,
       showTable: 'buy',
+      merchantOrderNo,
     }
     if (chain) dataOrign.network = chain
     if (currency) dataOrign.crypto = currency
     let dataSign = {
       appId: process.env.ALCHEMY_APPID,
-      address
+      address,
     }
     let signStr = generateKVStr({ data: dataSign, sort: true })
     let sign = createPageSign(signStr)
@@ -41,4 +45,37 @@ class AlchemyController extends BaseController {
     url = generateKVStr({ data: dataOrign, encode: true, uri: url })
     return { url }
   }
+
+  @role(ROLE_ANON)
+  @router('post /pay/alchemy/cb')
+  async alchemyCallback(req, res) {
+    let { orderNo, status, crypto, network, merchantOrderNo } = req.params
+    if (!merchantOrderNo) {
+      logger.info(`alchemy callback merchantOrderNo not found`)
+      throw new ZError(11, 'alchemy callback merchantOrderNo not found')
+    }
+    let record = await PayRecord.findById(merchantOrderNo)
+    if (!record) {
+      logger.info(`alchemy callback record not found`)
+      throw new ZError(12, 'alchemy callback record not found')
+    }
+    if (record.status !== PayStatus.PENDING) {
+      logger.info(`alchemy callback record status error`)
+      throw new ZError(13, 'alchemy callback record status error')
+    }
+    if (!checkPayResultSign(req.params)) {
+      logger.info(`alchemy callback sign error`)
+      record.status = PayStatus.FAIL
+      await record.save()
+      throw new ZError(14, 'alchemy callback sign error')
+    }
+
+    record.outOrderId = orderNo
+    record.chain = network
+    record.currency = crypto
+    record.outData = req.params
+    record.status = status == 'PAY_SUCCESS' ? PayStatus.SUCCESS : PayStatus.FAIL
+    await record.save()
+    return {}
+  }
 }

src/modules/PayRecord.ts

@@ -0,0 +1,58 @@
+import { getModelForClass, index, modelOptions, mongoose, prop, Severity } from '@typegoose/typegoose'
+import { dbconn } from 'decorators/dbconn'
+import { BaseModule } from './Base'
+
+export enum PayPlatEnum {
+  ALCHEMY = 1,
+}
+
+export enum PayType {
+  BUY = 1,
+  SELL = 2,
+}
+
+export enum PayStatus {
+  PENDING = 0,
+  SUCCESS = 1,
+  FAIL = 2,
+}
+
+@dbconn()
+@modelOptions({
+  schemaOptions: { collection: 'pay_record', timestamps: true },
+  options: { allowMixed: Severity.ALLOW },
+})
+class PayRecordClass extends BaseModule {
+  @prop({ enum: PayPlatEnum, default: PayPlatEnum.ALCHEMY })
+  public channel!: PayPlatEnum
+
+  @prop({ required: true, default: PayType.BUY })
+  public type: PayType
+
+  @prop({ required: true })
+  public account: string
+
+  @prop()
+  public address: string
+
+  @prop()
+  public chain: string
+
+  @prop()
+  public currency?: string
+
+  @prop({ required: true, default: PayStatus.PENDING })
+  public status: PayStatus
+  // 渠道返回的原始资料
+  @prop({ type: mongoose.Schema.Types.Mixed })
+  public outData: any
+
+  // 渠道返回的订单id
+  @prop()
+  public outOrderId: string
+  // 交易的txHash
+  @prop()
+  public txHash: string
+}
+
+export const PayRecord = getModelForClass(PayRecordClass, { existingConnection: PayRecordClass.db })

src/service/alchemy.svr.ts

@@ -10,29 +10,50 @@ export function createSimpleSign() {
   return {
     appid,
     timestamp,
-    sign
+    sign,
   }
 }
 
+/**
+ * Check if the pay result sign is valid
+ * @param data - the data to be checked
+ * @returns true if the sign is valid, false otherwise
+ */
+export function checkPayResultSign(data: any) {
+  const { appId, orderNo, crypto, network, address, signature } = data
+  const sign = sha1(appId + process.env.ALCHEMY_APP_SECRET + appId + orderNo + crypto + network + address)
+  return sign === signature
+}
+
+/**
+ * Create page sign
+ * @param plainText - plain text to be encrypted
+ * @returns encrypted text
+ */
 export function createPageSign(plainText: string) {
   let secret = process.env.ALCHEMY_APP_SECRET
   try {
-    const plainTextData = Buffer.from(plainText, 'utf8');
-    const secretKey = Buffer.from(secret, 'utf8');
-    const iv = secret.substring(0, 16);
+    const plainTextData = Buffer.from(plainText, 'utf8')
+    const secretKey = Buffer.from(secret, 'utf8')
+    const iv = secret.substring(0, 16)
 
-    const cipher = crypto.createCipheriv('aes-128-cbc', secretKey, iv);
+    const cipher = crypto.createCipheriv('aes-128-cbc', secretKey, iv)
 
-    let encrypted = cipher.update(plainTextData);
-    encrypted = Buffer.concat([encrypted, cipher.final()]);
+    let encrypted = cipher.update(plainTextData)
+    encrypted = Buffer.concat([encrypted, cipher.final()])
 
-    return encrypted.toString('base64');
+    return encrypted.toString('base64')
   } catch (e) {
-    console.log(`AES encrypting exception, msg is ${e.toString()}`);
+    console.log(`AES encrypting exception, msg is ${e.toString()}`)
   }
-  return null;
+  return null
 }
 
+/**
+ * Refresh token
+ * @param email - user email
+ * @returns token
+ */
 export async function refreshToken(email: string) {
   const data = JSON.stringify({ email })
   const { appid, timestamp, sign } = createSimpleSign()
@@ -41,12 +62,12 @@ export async function refreshToken(email: string) {
     method: 'post',
     url: `${host}/merchant/getToken`,
     headers: {
-      'appId': appid, 
-      'timestamp': timestamp, 
-      'sign': sign, 
-      'Content-Type': 'application/json'
+      appId: appid,
+      timestamp: timestamp,
+      sign: sign,
+      'Content-Type': 'application/json',
     },
-    data : data
+    data: data,
   }
   let response = await axios(config)
   return response.data