import { Chaindoc } from '@chaindoc_io/server-sdk';
import { readFile } from 'fs/promises';

// Initialize SDK
const chaindoc = new Chaindoc({
  secretKey: process.env.CHAINDOC_SECRET_KEY!,
});

// 1. Upload document
const buffer = await readFile('./contract.pdf');
const file = new Blob([buffer], { type: 'application/pdf' });
const { media } = await chaindoc.media.upload([file]);

// 2. Create document record
const doc = await chaindoc.documents.create({
  name: 'Service Agreement',
  description: 'Q4 2024 Contract',
  media: media[0],
  status: 'published', // Triggers blockchain verification
  hashtags: ['#contract', '#2024'],
  meta: [{ key: 'client', value: 'Acme Corp' }],
});

console.log('Document created:', doc.documentId);

// Create signature request for multiple signers
const sigRequest = await chaindoc.signatures.createRequest({
  versionId: doc.document.versions[0].uuid,
  recipients: [
    { email: 'signer1@example.com' },
    { email: 'signer2@example.com' },
  ],
  deadline: new Date('2024-12-31'),
  message: 'Please review and sign this agreement',
  embeddedFlow: true, // Enable for frontend integration
});

console.log('Signature request created:', sigRequest.signatureRequest.uuid);

// Check signature request status
const status = await chaindoc.signatures.getRequestStatus(
  sigRequest.signatureRequest.uuid
);

if (status.signatureRequest.status === 'completed') {
  console.log('All signatures collected!');
  // Download signed document
  // Send notifications
  // Update your database
}

// Configure webhook endpoint
app.post('/webhooks/chaindoc', (req, res) => {
  const event = req.headers['x-webhook-event'];
  const payload = req.body;
  
  switch (event) {
    case 'document.verified':
      console.log('Document verified on blockchain:', payload.txHash);
      break;
    case 'signature.request.completed':
      console.log('All signatures collected!');
      // Send notifications, update status, etc.
      break;
  }
  
  res.status(200).send('OK');
});

import { Chaindoc } from '@chaindoc_io/server-sdk';
import { readFile } from 'fs/promises';

async function createSigningWorkflow() {
  const chaindoc = new Chaindoc({
    secretKey: process.env.CHAINDOC_SECRET_KEY!,
  });
  
  // Step 1: Upload document
  const buffer = await readFile('./contract.pdf');
  const file = new Blob([buffer], { type: 'application/pdf' });
  const { media } = await chaindoc.media.upload([file]);
  
  // Step 2: Create document
  const doc = await chaindoc.documents.create({
    name: 'Service Agreement',
    description: 'Contract for consulting services',
    media: media[0],
    status: 'published',
    hashtags: ['#contract'],
    meta: [],
  });
  
  // Step 3: Create signature request
  const sigRequest = await chaindoc.signatures.createRequest({
    versionId: doc.document.versions[0].uuid,
    recipients: [{ email: 'signer@example.com' }],
    deadline: new Date('2024-12-31'),
    embeddedFlow: true,
  });
  
  // Step 4: Create session for frontend
  const session = await chaindoc.embedded.createSession({
    email: 'signer@example.com',
    metadata: {
      documentId: doc.documentId,
      signatureRequestId: sigRequest.signatureRequest.uuid,
    },
  });
  
  return {
    documentId: doc.documentId,
    sessionId: session.sessionId,
  };
}

// Usage
const { documentId, sessionId } = await createSigningWorkflow();
console.log('Ready for signing:', { documentId, sessionId });