#!/usr/bin/env node

const fs = require('fs');
const debug = require('debug')('ipfs-pinner');
const Kredits = require('@kredits/contracts');
const IpfsPinner = require('./lib/ipfs-pinner');
const defaultPeers = JSON.parse(fs.readFileSync('./config/peers.json'));

const argv = require('yargs')
  .default({
    rpcUrl: 'https://rsk-testnet.kosmos.org',
    host: 'localhost',
    port: '5001',
    protocol: 'http',
    watch: true,
    progress: false,
    bootstrapNode: `${defaultPeers[0].Addrs[0]}/ipfs/${defaultPeers[0].ID}`
  })
  .boolean('watch')
  .boolean('progress')
  .describe({
    rpcUrl: 'Web3/EVM node RPC URL; alternative to --network',
    host: 'IPFS API host',
    port: 'IPFS API port',
    protocol: 'IPFS API protocol',
    watch: 'Monitor contract events for new IPFS documents',
    progress: 'Show progress bars',
    bootstrapNode: 'IPFS node address to connect to before fetching documents'
  })
  .example('$0 --host localhost', 'Pins all existing IPFS documents to the IPFS API running on localhost and monitors for new events')
  .argv;

const ipfsConfig = {
  host: argv.host,
  port: argv.port,
  protocol: argv.protocol
};

debug(`IPFS node:`, ipfsConfig);

(async () => {
  try {
    const kredits = await Kredits.for(
      { rpcUrl: argv.rpcUrl },
      { ipfsConfig: ipfsConfig }
    ).init();

    // Check the connection to the IPFS client
    // TODO redesign IPFS wrapper API and do not use an internal attribute
    const ipfsApi = kredits.ipfs._ipfsAPI;

    await ipfsApi.id();

    debug(`Connecting to known IPFS node ${argv.bootstrapNode}`);
    await ipfsApi.swarm.connect(argv.bootstrapNode);

    const ipfsPinner = new IpfsPinner(kredits, {
      progress: argv.progress
    });

    await ipfsPinner.pinAll().then(cids => {
      console.log(`\nSuccessfully pinned ${cids.length} documents`)
    });

    if (argv.watch) {
      console.log('\nWatching contract events for new documents...');

      ipfsPinner.watch(pin => {
        console.log('Pinned a new document:', pin[0]["hash"]);
      });
    } else {
      process.exit(0);
    }

    // TODO Add new deployment/DAO/org ID or all contract proxy addresses
    // console.log(`Subscribed to DAO: ${kredits.Kernel.contract.address}`);
  } catch(e) {
    console.log('Failed to start');
    console.log(e);
    process.exit(1);
  }
})();