ProofOfAttendance Contract

const originalTicketId = await proofOfAttendance.getOriginalTicketId(123);
console.log(`POA #123 was minted from ticket #${originalTicketId}`);

const total = await proofOfAttendance.totalMinted();
console.log(`${total} attendees have checked in`);

{
  "name": "DevCon 2024 - Proof of Attendance #123",
  "description": "This NFT proves that the holder attended DevCon 2024",
  "image": "https://api.passmint.com/poa/images/123.png",
  "attributes": [
    {
      "trait_type": "Event",
      "value": "DevCon 2024"
    },
    {
      "trait_type": "Date",
      "value": "2024-03-15"
    },
    {
      "trait_type": "Location",
      "value": "San Francisco, CA"
    },
    {
      "trait_type": "Original Ticket ID",
      "value": "42"
    },
    {
      "trait_type": "Checked In At",
      "value": "1710345600"
    }
  ]
}

const tx = await proofOfAttendance.authorizeMinter(newEventContract);
await tx.wait();

const tx = await proofOfAttendance.revokeMinter(oldEventContract);
await tx.wait();

// Update to custom metadata server
const tx = await proofOfAttendance.setBaseURI(
  'https://metadata.myevent.com/poa/'
);
await tx.wait();

async function getUserEventHistory(userAddress) {
  // Array to store all events attended
  const eventsAttended = [];
  
  // Get all POA contracts (from your database)
  const poaContracts = await database.getAllPOAContracts();
  
  for (const poaAddress of poaContracts) {
    const poa = new ethers.Contract(poaAddress, poaABI, provider);
    const balance = await poa.balanceOf(userAddress);
    
    if (balance > 0) {
      // User has POA from this event
      const tokenId = await poa.tokenOfOwnerByIndex(userAddress, 0);
      const tokenURI = await poa.tokenURI(tokenId);
      const metadata = await (await fetch(tokenURI)).json();
      
      eventsAttended.push({
        event: metadata.name,
        date: metadata.attributes.find(a => a.trait_type === 'Date').value,
        poaAddress,
        tokenId
      });
    }
  }
  
  return eventsAttended;
}

// Usage
const history = await getUserEventHistory('0xUserAddress');
console.log(`User has attended ${history.length} events:`);
history.forEach(event => {
  console.log(`- ${event.event} on ${event.date}`);
});