creating getEnsName function & endpoint

.env.example

@@ -0,0 +1 @@
+#NEXT_PUBLIC_INFURA_PROJECT_ID="xxx"

.gitignore

@@ -102,3 +102,4 @@ dist
 
 # TernJS port file
 .tern-port
+.vercel

app.ts

@@ -1,16 +0,0 @@
-import express from 'express'
-import cors from 'cors'
-
-const app = express()
-const port = 3000
-
-import indexRouter from './routes/index'
-
-app.use(express.json())
-app.use(cors())
-app.use('/', indexRouter)
-
-app.listen(port, () => {
-  console.log(`Price Request App listening at http://localhost:${port}`)
-})
-export default app

next-env.d.ts

@@ -0,0 +1,5 @@
+/// <reference types="next" />
+/// <reference types="next/image-types/global" />
+
+// NOTE: This file should not be edited
+// see https://nextjs.org/docs/basic-features/typescript for more information.

package.json

@@ -7,7 +7,6 @@
   "main": "./dist/app.js",
   "scripts": {
     "start": "node dist/app.js",
-    "dev": "nodemon src/app.ts",
     "prepare": "husky install",
     "build": "npm run clean && tsc --sourcemap",
     "build:docker": "npm run build && docker build . -t ocean/subgraph-fetch-price",
@@ -21,8 +20,11 @@
     "test": "npm run test:format && npm run test:integration"
   },
   "dependencies": {
+    "@ensdomains/ensjs": "^2.1.0",
+    "@oceanprotocol/lib": "^1.1.8",
     "cors": "^2.8.5",
-    "next": "^12.2.5"
+    "next": "^12.2.5",
+    "web3": "^1.7.5"
   },
   "devDependencies": {
     "@babel/core": "^7.18.5",
@@ -31,6 +33,7 @@
     "@types/express": "^4.17.11",
     "@types/mocha": "^9.1.1",
     "@types/node": "^18.0.0",
+    "@types/react": "^18.0.17",
     "@typescript-eslint/eslint-plugin": "^5.28.0",
     "@typescript-eslint/parser": "^5.29.0",
     "chai": "^4.3.6",

pages/api/_utils.ts

@@ -0,0 +1,23 @@
+import { ConfigHelper, Config } from '@oceanprotocol/lib'
+import Web3 from 'web3'
+
+function getOceanConfig(network: string | number): Config {
+  const config = new ConfigHelper().getConfig(
+    network,
+    network === 'polygon' ||
+      network === 'moonbeamalpha' ||
+      network === 1287 ||
+      network === 'bsc' ||
+      network === 56 ||
+      network === 'gaiaxtestnet' ||
+      network === 2021000
+      ? undefined
+      : process.env.NEXT_PUBLIC_INFURA_PROJECT_ID
+  ) as Config
+  return config as Config
+}
+
+export async function getDummyWeb3(chainId: number): Promise<Web3> {
+  const config = getOceanConfig(chainId)
+  return new Web3(config.nodeUri)
+}

pages/api/name.ts

@@ -0,0 +1,38 @@
+import { NextApiRequest, NextApiResponse } from 'next'
+import ENS, { getEnsAddress as getEnsAddressVendor } from '@ensdomains/ensjs'
+import { getDummyWeb3 } from './_utils'
+
+let ens: any
+
+async function getEns(): Promise<any> {
+  const _ens =
+    ens ||
+    new ENS({
+      provider: (await getDummyWeb3(1)).currentProvider,
+      ensAddress: getEnsAddressVendor(1)
+    })
+  ens = _ens
+
+  return _ens
+}
+
+export default async function getEnsName(
+  request: NextApiRequest,
+  response: NextApiResponse
+) {
+  try {
+    const accountId = String(request.query.accountId)
+    const ens = await getEns()
+    let name = await ens.getName(accountId)
+
+    // Check to be sure the reverse record is correct.
+    const reverseAccountId = await ens.name(name.name).getAddress()
+    console.log('reverseAccountId', reverseAccountId)
+    if (accountId.toLowerCase() !== reverseAccountId.toLowerCase()) name = null
+
+    response.setHeader('Cache-Control', 's-maxage=86400')
+    response.status(200).send(name)
+  } catch (error) {
+    response.send(`${error}`)
+  }
+}

tsconfig.json

@@ -13,8 +13,16 @@
     "preserveConstEnums": true,
     "outDir": "./dist/",
     "sourceMap": true,
-    "typeRoots": ["node_modules/@types"]
+    "typeRoots": ["node_modules/@types"],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "strict": false,
+    "forceConsistentCasingInFileNames": true,
+    "noEmit": true,
+    "incremental": true,
+    "isolatedModules": true,
+    "jsx": "preserve"
   },
   "exclude": ["node_modules", "*.js", "*.json"],
-  "include": ["./src/**/*", "./test/**/*"]
+  "include": ["./pages/**/*", "./test/**/*"]
 }