const debug = require('debug')('ipfs-pinner');
const Kredits = require('kredits-contracts');
const IpfsPinner = require('./lib/ipfs-pinner');

const argv = require('yargs')
  .default({ network: 'rinkeby', apm: 'open.aragonpm.eth', host: 'localhost', port: '5001', protocol: 'http', monitor: true })
  .boolean('monitor')
  .describe({
    network: 'Ethereum network to connect to',
    rpcUrl: 'Ethereum node RPC URL; alternative to --network',
    daoAddress: 'Optional Kredits DAO address',
    host: 'IPFS API host',
    port: 'IPFS API port',
    protocol: 'IPFS API protocol',
    monitor: 'Monitor contract events for new IPFS documents'
  })
  .example('$0 --network rinkeby --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
};

console.log(`Using IPFS:`, ipfsConfig);

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

    // check the connection to the IPFS client
    // TODO redesign IPFS wrapper API and do not use an internal attribute
    await kredits.ipfs._ipfsAPI.id();

    const ipfsPinner = new IpfsPinner(kredits);

    ipfsPinner.pinAll().then(pins => {
      console.log(`Pinned ${pins.length} existing documents`);
    });

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

    console.log(`Subscribed to DAO: ${kredits.Kernel.contract.address}`);
  } catch(e) {
    console.log('Failed to start');
    console.log(e);
    process.exit(1);
  }
})();