/*jshint esversion: 6 */
var async = require('async');
var Web3 = require('web3');
var fs = require('fs');
var grunt = require('grunt');
var mkdirp = require('mkdirp');
var colors = require('colors');
var chokidar = require('chokidar');

var Deploy = require('./deploy.js');
var ContractsManager = require('./contracts.js');
var ABIGenerator = require('./abi.js');

var Embark = {
  initConfig: function(configDir, files, env) {
    this.contractsManager = new ContractsManager(configDir, files, env);
    this.contractsManager.init();
    return this.contractsManager;
  },

  deploy: function() {
    async.waterfall([
      function loadConfig(callback) {
      var contractsManager = Embark.initConfig('config/', 'app/contracts/**/*.sol', 'development');
      callback(null, contractsManager);
    },
    function buildContracts(contractsManager, callback) {
      contractsManager.build();
      callback(null, contractsManager);
    },
    function deployContracts(contractsManager, callback) {
      var web3 = new Web3();
      web3.setProvider(new web3.providers.HttpProvider('http://localhost:8101'));
      var deploy = new Deploy(web3, contractsManager);
      deploy.deployAll(function() {
        callback(null, contractsManager);
      });
    },
    function generateABI(contractsManager, callback) {
      var abiGenerator = new ABIGenerator(contractsManager);
      console.log(abiGenerator.generateProvider());
      console.log(abiGenerator.generateContracts());
      callback(null, 'done');
    },
    ], function(err, result) {
      console.log(arguments);
    });
  },

  buildAssets: function() {
    var embarkConfig = JSON.parse(fs.readFileSync("embark.json"));

    var appConfig = embarkConfig.app;

    for(var targetFile in appConfig) {
      var originalFiles = grunt.file.expand(appConfig[targetFile]);
      console.log(originalFiles);
      // remove duplicates

      var content = originalFiles.filter(function(file) {
        return file.indexOf('.') >= 0;
      }).map(function(file) {
        console.log("reading " + file);
        return fs.readFileSync(file);
      }).join("\n");

      var dir = targetFile.split('/').slice(0, -1).join('/');
      console.log("creating dir " + "dist/" + dir);
      mkdirp.sync("dist/" + dir);

      //console.log(content);
      fs.writeFileSync("dist/" + targetFile, content);
    }
  },

  server: function(callback) {
    var finalhandler = require('finalhandler');
    var http = require('http');
    var serveStatic = require('serve-static');

    // Serve up public/ftp folder 
    var serve = serveStatic('dist/', {'index': ['index.html', 'index.htm']});

    // Create server 
    var server = http.createServer(function onRequest (req, res) {
      serve(req, res, finalhandler(req, res));
    });

    // Listen 
    console.log("listening on port 8000".underline.green);
    server.listen(8000) ;
    callback();
  },

  watch: function() {
    var embarkConfig = JSON.parse(fs.readFileSync("embark.json"));

    var appConfig = embarkConfig.app;
    var filesToWatch = [];

    for(var targetFile in appConfig) {
      filesToWatch.push(appConfig[targetFile]);
    }

    console.log(filesToWatch);
    var watcher = chokidar.watch(filesToWatch, {
      ignored: /[\/\\]\./,
      persistent: true,
      ignoreInitial: true,
      followSymlinks: true
    });
    watcher
    .on('add', path => console.log(`File ${path} has been added`))
    .on('change', path => console.log(`File ${path} has been changed`))
    .on('unlink', path => console.log(`File ${path} has been removed`))
    .on('ready', () => console.log('ready to watch changes'));
    console.log("done!");
  }
};

//module.exports = Embark;

Embark.buildAssets();
Embark.server(function() {
  Embark.watch();
});