var Events = require('./events.js');
var Logger = require('./logger.js');
var Config = require('./config.js');

var DeployManager = require('../contracts/deploy_manager.js');
var ABIGenerator = require('../contracts/abi.js');
var Dashboard = require('../dashboard/dashboard.js');
var ServicesMonitor = require('./services.js');
var Pipeline = require('../pipeline/pipeline.js');
var Server = require('../pipeline/server.js');
var Watch = require('../pipeline/watch.js');

var Engine = function(options) {
  this.env = options.env;
  this.embarkConfig = options.embarkConfig;
  this.interceptLogs = options.interceptLogs;
  this.version = "2.3.0";
};

Engine.prototype.init = function(_options) {
  var options = _options || {};
  this.events = new Events();
  this.logger = options.logger || new Logger({logLevel: 'debug'});
  this.config = new Config({env: this.env, logger: this.logger});
  this.config.loadConfigFiles({embarkConfig: this.embarkConfig, interceptLogs: this.interceptLogs});
  this.plugins = this.config.plugins;
};

Engine.prototype.startService = function(serviceName, _options) {
  var self = this;
  var options = _options || {};
  if (serviceName === "monitor") {
    var servicesMonitor = new ServicesMonitor({
      logger: this.logger,
      config: this.config,
      serverHost: options.serverHost,
      serverPort: options.serverPort,
      runWebserver: options.runWebserver,
      version: this.version
    });
    servicesMonitor.startMonitor();
  } else if (serviceName === "pipeline") {
    this.logger.setStatus("Building Assets");
    var pipeline = new Pipeline({
      buildDir: this.config.buildDir,
      contractsFiles: this.config.contractsFiles,
      assetFiles: this.config.assetFiles,
      logger: this.logger,
      plugins: this.plugins
    });
    this.events.on('abi', function(abi) {
      self.currentAbi = abi;
      pipeline.build(abi);
    });
    this.events.on('file-event', function(fileType, path) {
      if (fileType === 'asset') {
        self.config.reloadConfig();
        pipeline.build(self.abi, path);
      }
    });
  } else if (serviceName === "abi") {
    var generateABICode = function(contractsManager) {
      var abiGenerator = new ABIGenerator({
        blockchainConfig: self.config.blockchainConfig,
        contractsManager: contractsManager,
        plugins: self.plugins,
        storageConfig: self.config.storageConfig,
        communicationConfig: self.config.communicationConfig
      });
      var embarkJSABI = abiGenerator.generateABI({useEmbarkJS: true});
      var vanillaABI = abiGenerator.generateABI({useEmbarkJS: false});
      var vanillaContractsABI = abiGenerator.generateContracts(false);

      self.events.emit('abi-contracts-vanila', vanillaContractsABI);
      self.events.emit('abi-vanila', vanillaABI);
      self.events.emit('abi', embarkJSABI);
    };
    this.events.on('contractsDeployed', generateABICode);
    this.events.on('blockchainDisabled', generateABICode);
  } else if (serviceName === "deployment") {
    this.deployManager = new DeployManager({
      web3: options.web3,
      trackContracts: options.trackContracts,
      config: this.config,
      logger: this.logger,
      plugins: this.plugins,
      events: this.events
    });

    this.events.on('file-event', function(fileType, path) {
      if (fileType === 'contract' || fileType === 'config') {
        self.config.reloadConfig();
        deployManager.deployContracts(function() {});
      }
    });
  } else if (serviceName === "fileWatcher") {
    this.logger.setStatus("Watching for changes");
    var watch = new Watch({logger: this.logger, events: this.events});
    watch.start();
  } else if (serviceName === "webServer") {
    this.logger.setStatus("Starting Server");
    var server = new Server({
      logger: this.logger,
      host: options.serverHost,
      port: options.serverPort
    });
    server.start(function(){});
  } else {
    throw new Error("unknown service: " + serviceName);
  }
};

module.exports = Engine;