feat(vouch-add): vouching timeout for bad vouchers

src/controllers/vouch/add.ts

@@ -3,9 +3,11 @@ import Joi from '@hapi/joi';
 // eslint-disable-next-line camelcase
 import { recoverTypedSignature_v4 } from 'eth-sig-util';
 import { ethers } from 'ethers';
+import logger from '../../logger';
 import requestMiddleware from '../../middleware/request-middleware';
 import { Vouch } from '../../models';
 import pohAbi from '../../abis/proof-of-humanity.json';
+const fetch = require("cross-fetch");
 
 const addVouchSchema = Joi.object().keys({
   signature: Joi.string().required(),
@@ -16,7 +18,8 @@ const provider = new ethers.providers.InfuraProvider('homestead', process.env.IN
 const poh = new ethers.Contract(process.env.POH_ADDRESS, pohAbi, provider);
 
 const add: RequestHandler = async (req, res) => {
-  const {
+
+   const {
     signature,
     msgData: msgDataString
   } = req.body;
@@ -32,7 +35,59 @@ const add: RequestHandler = async (req, res) => {
     data: msgData,
     sig: signature
   });
+  let idQuery = `id: "IdQuery"`;
+   let query = `query IdQuery(\n  $id: ID!\n  $_id: [String!]\n) {submission(id: $id) {\n    disputed\nvouchees{\nstatus\n disputed\nrequests{\n challenges{\n creationTime \n} \n}    id\n  }\n}\n}`
+   let variables = {
+    id: voucherAddr,
+    _id: [voucherAddr]
+}
+let body = JSON.stringify({id: idQuery, query: query, variables: variables});
+let status = await fetch("https://api.thegraph.com/subgraphs/name/kleros/proof-of-humanity-mainnet", {
+  method: "POST",
+  body: body,
+  headers: {
+      "Content-Type": "application/json"
+  }
+});
+let response = await status.json();
+let vouchingTimeout = false;
+if(response.data.submission !== null){
+  logger.debug(JSON.stringify(response.data.submission.vouchees));
+
+  const disputedVouches = response.data.submission.vouchees.filter(
+    (vouchee:any) => {return vouchee.disputed === true}
+  );
+
+
+
+  logger.debug(disputedVouches);
+  if (disputedVouches.length > 0) {
+
+    const latestChallengedVouchee = disputedVouches.sort((a:any, b:any) =>
+      a.requests[0].challenges[0].creationTime <
+      b.requests[0].challenges[0].creationTime
+        ? 1
+        : -1
+    );
+
 
+    const challengeTimestamp =
+      latestChallengedVouchee[0].requests[0].challenges[0].creationTime * 1000;
+
+let timestamp = challengeTimestamp + 5200000000 > Date.now();
+let removed = latestChallengedVouchee[0].status === 'None';
+    vouchingTimeout = timestamp && removed;
+    logger.debug(vouchingTimeout)
+  }
+
+
+}
+  if(vouchingTimeout){
+    res.status(400).json({
+      message:'Human is not able to vouch'
+    });
+    return;
+  }
   if (!(await poh.isRegistered(voucherAddr))) {
     res.status(400).json({
       message: 'Voucher not registered.'