DAO-XXX-Route fix: cached proposals additional process logic for prod…

… build (#254)

src/app/proposals/api/route.ts

@@ -1,22 +1,30 @@
-import { fetchProposalCreated } from '@/app/user/Balances/actions'
+import { BackendEventByTopic0ResponseValue, fetchProposalCreated } from '@/app/user/Balances/actions'
 import { NextRequest } from 'next/server'
 
 let cachedProposals = {
   lastUpdated: Date.now(),
-  data: [],
+  data: [] as BackendEventByTopic0ResponseValue[],
   isFetching: false,
   error: '',
   lastFromBlock: 0,
 }
 
+const shouldAddRowToDataArray = (newTransaction: { blockNumber: string }) => {
+  const indexFound = cachedProposals.data.findIndex(i => i.blockNumber === newTransaction.blockNumber)
+  return indexFound === -1
+}
+
 function fetchProposals() {
   cachedProposals.isFetching = true
   console.log(`13: Fetching proposals with lastFromBlock: ${cachedProposals.lastFromBlock}`)
   fetchProposalCreated(cachedProposals.lastFromBlock)
     .then(({ data }) => {
       console.log(14, 'Finished fetching proposals...')
       if (Array.isArray(data) && data.length > 0) {
-        cachedProposals.data = data as []
+        const dataToBeAdded = data.filter(shouldAddRowToDataArray)
+        if (dataToBeAdded.length > 0) {
+          cachedProposals.data.push(...dataToBeAdded)
+        }
         cachedProposals.error = ''
         cachedProposals.lastFromBlock = Number(data[data.length - 1].blockNumber) + 1 // Update lastFromBlock based on last proposal
       } else {

src/app/user/Balances/actions.ts

@@ -84,8 +84,21 @@ export const fetchNftsOwnedByAddressAndNFTAddress = (address: string, nftAddress
     .then(({ data }) => data)
     .catch(error => console.log(error))
 
+export interface BackendEventByTopic0ResponseValue {
+  address: string
+  blockNumber: string
+  data: string
+  gasPrice: string
+  gasUsed: string
+  logIndex: string
+  timeStamp: string
+  topics: Array<null | string>
+  transactionHash: string
+  transactionIndex: string
+}
+
 export const fetchProposalCreated = (fromBlock = 0) =>
-  axiosInstance.get(
+  axiosInstance.get<BackendEventByTopic0ResponseValue[]>(
     fetchProposalsCreatedByGovernorAddress
       .replace('{{address}}', GovernorAddress)
       .replace('{{fromBlock}}', fromBlock.toString()),