'use strict';

// const ipfsd   = require('ipfsd-ctl');
const IPFS    = require('ipfs')
const ipfsd   = require('ipfsd-ctl');
const OrbitDB = require('../src/OrbitDB');
const Timer   = require('./Timer');

// usage: benchmark.js <network hash> <username> <channel>;

// orbit-server
const network = 'localhost:3333';
const username = process.argv[2] ? process.argv[2] : 'testrunner';
const password = '';
const channelName = process.argv[3] ? process.argv[3] : 'c1';

const startIpfs = () => {
  return new Promise((resolve, reject) => {
    ipfsd.disposableApi((err, ipfs) => {
      if(err) console.error(err);
      resolve(ipfs);
    });
    // ipfsd.local((err, node) => {
    //   if(err) reject(err);
    //   node.startDaemon((err, ipfs) => {
    //     if(err) reject(err);
    //     resolve(ipfs);
    //   });
    // });
    // const ipfs = new IPFS('/tmp/benchmark')
    // ipfs.goOnline(() => {
    //   resolve(ipfs)
    // })
  });
};

const util = require('util');

// Metrics
let totalQueries = 0;
let seconds = 0;
let queriesPerSecond = 0;
let lastTenSeconds = 0;
let store;

const queryLoop = (db) => {
  // let timer = new Timer();
  // timer.start();
  store.add(username + totalQueries).then(() => {
    // console.log(`${timer.stop(true)} ms - ${process._getActiveRequests().length} ${process._getActiveHandles().length}`);
    // console.log(util.inspect(process.memoryUsage()));
    totalQueries ++;
    lastTenSeconds ++;
    queriesPerSecond ++;
    process.nextTick(queryLoop);
  });
};

let run = (() => {
    // Connect
    console.log(`Connecting...`)
    startIpfs()
      .then((ipfs) => OrbitDB.connect(network, username, password, ipfs))
      .then((orbit) => {
        console.log("OrbitDB")
        orbit.events.on('load', () => console.log("loading log"))
        orbit.events.on('ready', (db) => {
          console.log("log fetched from history for", db.dbname);
          store = db;
          queryLoop();
        });
        return orbit;
      })
      .then((orbit) => orbit.eventlog(channelName))
      .then(() => {
        // Metrics output
        setInterval(() => {
          seconds ++;
          if(seconds % 10 === 0) {
            console.log(`--> Average of ${lastTenSeconds/10} q/s in the last 10 seconds`);
            if(lastTenSeconds === 0)
              throw new Error("Problems!");
            lastTenSeconds = 0;
          }
          console.log(`${queriesPerSecond} queries per second, ${totalQueries} queries in ${seconds} seconds`);
          queriesPerSecond = 0;
        }, 1000);
      })
      .catch((e) => {
        console.error("error:", e);
        console.error(e.stack);
        process.exit(1);
      })
})();

module.exports = run;