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addEvents.js
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addEvents.js
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//this is the script which tells the moralis server to watch and index EVENTS
const Moralis = require("moralis/node")
require("dotenv").config()
const contractAddresses = require("./constants/networkMapping.json")
let chainId = process.env.chainId || 31337
//moralis understands chainId as: 1337
const moralisChainId = chainId=="31337"? "1337": chainId
//watching of EVENTS of which contract
const contractAddress = contractAddresses[chainId]["NftMarketplace"][0]
const serverUrl = process.env.NEXT_PUBLIC_SERVER_URL
const appId = process.env.NEXT_PUBLIC_APP_ID
const masterKey = process.env.masterKey
async function main() {
await Moralis.start({serverUrl, appId, masterKey})
console.log(`Working with contract address ${contractAddress}`)
let itemListedOptions = {
//Moralis understands chainId = 1337
chainId: moralisChainId,
sync_historical: true,
address: contractAddress,
topic: "ItemListed(address, address, uint256, uint256)",
abi: {
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "seller",
"type": "address"
},
{
"indexed": true,
"internalType": "address",
"name": "nftAddress",
"type": "address"
},
{
"indexed": true,
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
},
{
"indexed": false,
"internalType": "uint256",
"name": "price",
"type": "uint256"
}
],
"name": "ItemListed",
"type": "event"
},
tableName: "ItemListed",
}
let itemBoughtOptions = {
chainId: moralisChainId,
sync_historical: true,
address: contractAddress,
topic: "ItemBought(address, address, uint256, uint256)",
abi: {
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "buyer",
"type": "address"
},
{
"indexed": true,
"internalType": "address",
"name": "nftAddress",
"type": "address"
},
{
"indexed": true,
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
},
{
"indexed": false,
"internalType": "uint256",
"name": "price",
"type": "uint256"
}
],
"name": "ItemBought",
"type": "event"
},
tableName: "ItemBought",
}
let itemCancelledOptions = {
chainId: moralisChainId,
sync_historical: true,
address: contractAddress,
topic: "ItemCancelled(address, address, uint256)",
abi: {
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "seller",
"type": "address"
},
{
"indexed": true,
"internalType": "address",
"name": "nftAddress",
"type": "address"
},
{
"indexed": true,
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
}
],
"name": "ItemCancelled",
"type": "event"
},
tableName: "ItemCancelled",
}
//sending them to our server
const listedResponse = await Moralis.Cloud.run("watchContractEvent", itemListedOptions, {useMasterKey: true})
const boughtResponse = await Moralis.Cloud.run("watchContractEvent", itemBoughtOptions, {useMasterKey: true})
const cancelledResponse = await Moralis.Cloud.run("watchContractEvent", itemCancelledOptions, {useMasterKey: true})
if(listedResponse.success && boughtResponse.success && cancelledResponse.success) {
console.log("Success! Database Updated with watching events")
}else{
console.log("Something went wrong")
}
}
main()
.then(() => {
process.exit(0)
})
.catch((e) => {
console.log(e)
process.exit(1)
})