tubbymemes/suchwowx/templates/includes/web3.html

<script src="/static/js/vendor/web3-1.3.6.min.js"></script>
<script type="text/javascript">
  let contractABI = {{ config.CONTRACT_ABI | tojson }};
  let contractAddress = "{{ config.CONTRACT_ADDRESS }}";
  const w3 = new Web3(Web3.givenProvider);
  const contract = new w3.eth.Contract(contractABI, contractAddress);

  async function getMetamaskAccount() {
    const accounts = await window.ethereum.request({
      method: 'eth_requestAccounts',
    });
    const account = accounts[0];
    return account
  }

  async function addWOWX() {
    let tokenAddress;
    if ('{{ config.CONTRACT_TESTNET }}' == 'True') {
      tokenAddress = '0xc6B039b1e0be1ba0B433f319898438E782E5dEBA';
    } else {
      tokenAddress = '0xba5dc7e77d150816b758e9826fcad2d74820e379';
    }
    try {
      await ethereum.request({
        method: 'wallet_watchAsset',
        params: {
          type: 'ERC20',
          options: {
            address: tokenAddress.toLowerCase(),
            symbol: 'WOWX',
            decimals: 18,
            image: 'https://github.com/wownerox/meta/raw/main/logo.png'
          }
        },
      });
    } catch(e) {
      console.log(e);
    }
  }

  async function addAvalancheNetwork(){
    let chainId, rpcUrl, explorerUrl, name;
    if ('{{ config.CONTRACT_TESTNET }}' == 'True') {
      name = 'Avalanche Testnet';
      chainId = '0xA869';
      rpcUrl = 'https://api.avax-test.network/ext/bc/C/rpc';
      explorerUrl = 'https://testnet.snowtrace.io';
    } else {
      name = 'Avalanche Mainnet';
      chainId = '0xA86A';
      rpcUrl = 'https://api.avax.network/ext/bc/C/rpc';
      explorerUrl = 'https://snowtrace.io';
    }
    try {
      await ethereum.request({
        method: 'wallet_switchEthereumChain',
        params: [{ chainId: chainId }],
      });
    } catch (switchError) {
      // This error code indicates that the chain has not been added to MetaMask.
      if (switchError.code === 4902) {
        try {
          await ethereum.request({
            method: 'wallet_addEthereumChain',
            params: [{
              chainId: chainId,
              chainName: name,
              nativeCurrency: {
                name: 'Avalanche',
                symbol: 'AVAX',
                decimals: 18,
              },
              rpcUrls: [rpcUrl],
              blockExplorerUrls: [explorerUrl],
            }],
          });
        } catch (addError) {
          // handle "add" error
        }
      }
      // handle other "switch" errors
    }
  }

  async function getTokenID(ipfsHash) {
    await addAvalancheNetwork();
    if (ipfsHash != '') {
      const tokenId = await contract.methods.metadataTokenId(ipfsHash).call();
      return tokenId;
    }
  }

  async function isMinted(ipfsHash) {
    await addAvalancheNetwork();
    if (ipfsHash != '') {
      const tokenId = await getTokenID(ipfsHash)
      if (tokenId == 0) {
        return false;
      } else {
        return true;
      }
    } else {
      return false
    }
  }
</script>