feat: Refactor AlchemyController's callback function for usability and clarity.

- Add constant and callback URL to AlchemyController for Alchemy Pay
- Improve parameter validations and error handling in `alchemyCallback` function
- Remove unused variable `redirectUrl` in AlchemyController
- Update `.env.development` with Alchemy Pay callback URL

.env.development

@@ -15,3 +15,4 @@ ALCHEMY_APPID="f83Is2y7L425rxl8"
 ALCHEMY_APP_SECRET="4Yn8RkxDXN71Q3p0"
 ALCHEMY_API_BASE="https://openapi-test.alchemypay.org"
 ALCHEMY_PAGE_BASE="https://ramptest.alchemypay.org"
+ALCHEMY_PAY_CB_URL="https://wallet.cebg.games"

src/controllers/alchemy.controller.ts

@@ -6,6 +6,7 @@ import { checkPayResultSign, createPageSign, refreshToken } from 'service/alchem
 import { generateKVStr } from 'utils/net.util'
 import { PayRecord, PayStatus } from 'modules/PayRecord'
 
+const CALL_BACK_URL = `${process.env.ALCHEMY_PAY_CB_URL}/pay/alchemy/cb`
 class AlchemyController extends BaseController {
   @router('post /pay/alchemy/buy')
   async beginPay(req, res) {
@@ -19,7 +20,6 @@ class AlchemyController extends BaseController {
     }
     const { id, email, accessToken } = tokenResult.data
     const redirectUrl = ''
-    const callbackUrl = ''
     let record = new PayRecord({ account: user.id, address, chain, currency })
     await record.save()
     const merchantOrderNo = record.id
@@ -29,6 +29,7 @@ class AlchemyController extends BaseController {
       id,
       showTable: 'buy',
       merchantOrderNo,
+      callbackUrl: CALL_BACK_URL,
     }
     if (chain) dataOrign.network = chain
     if (currency) dataOrign.crypto = currency