validate-token-address.yml

name: Validate Token Address

on:
  issues:
    types: [opened, edited]

jobs:
  validate-address:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repo
        uses: actions/checkout@v3

      - name: Set up Node.js
        uses: actions/setup-node@v3
        with:
          node-version: 20

      - name: Install ethers.js
        run: npm install ethers

      - name: Extract address and network
        id: extract
        uses: actions/github-script@v7
        with:
          script: |
            const body = context.payload.issue.body;

            // Extract Network
            const networkMatch = body.match(/Network\s*\n\s*(.*)/);
            const network = networkMatch ? networkMatch[1].trim() : null;

            // Extract Address
            const addressMatch = body.match(/Address\s*\n\s*(0x[a-fA-F0-9]{40})/);
            const address = addressMatch ? addressMatch[1].trim() : null;

            core.setOutput('network', network || '');
            core.setOutput('address', address || '');

      - name: Validate on-chain address
        id: validate
        run: |
          node -e "
          const { ethers } = require('ethers');

          const network = '${{ steps.extract.outputs.network }}';
          const address = '${{ steps.extract.outputs.address }}';

          if (!address) {
            console.log('No address provided.');
            process.exit(1);
          }

          const rpcMap = {
            MAINNET: 'https://rpc.ankr.com/eth',
            GNOSIS_CHAIN: 'https://rpc.gnosischain.com',
            ARBITRUM_ONE: 'https://arb1.arbitrum.io/rpc',
            BASE: 'https://mainnet.base.org',
            POLYGON: 'https://polygon-rpc.com',
            AVALANCHE: 'https://api.avax.network/ext/bc/C/rpc',
            BNB: 'https://bsc-dataseed.binance.org/',
            LENS: ''
          };

          const rpcUrl = rpcMap[network];
          if (!rpcUrl) {
            console.log('No RPC for network, skipping check.');
            process.exit(0);
          }

          const provider = new ethers.JsonRpcProvider(rpcUrl);

          provider.getCode(address).then(code => {
            if (code === '0x') {
              console.log('Address not found on chain.');
              process.exit(1);
            } else {
              console.log('Address exists on chain.');
            }
          }).catch(err => {
            console.error('Error checking address:', err);
            process.exit(1);
          });
          "

      - name: Add comment and label if invalid
        if: failure()
        uses: actions/github-script@v7
        with:
          script: |
            const issue_number = context.issue.number;
            const address = '${{ steps.extract.outputs.address }}';
            const network = '${{ steps.extract.outputs.network }}';

            // Add comment
            await github.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number,
              body: `⚠️ The address \`${address || 'N/A'}\` does not exist or is invalid on network \`${network || 'N/A'}\`. Please verify.`
            });

            // Add label
            await github.issues.addLabels({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number,
              labels: ['invalid-address']
            });