//#region Modules
const { dirname } = require('path');
const path = require('path');
const https = require('https');
var express = require('express');
var app = express();
var { create } = require('express-handlebars');
const cookieParser = require('cookie-parser');
var fs = require('fs');
var os = require('os');
var favicon = require('serve-favicon');
const Sequelize = require('sequelize');
const { Server } = require('socket.io');
const { on } = require('cluster');
// const { start } = require('repl');
// const WebSocket = require('ws');
//#endregion


require('module-alias/register'); // define paths in package.json
process.env.TZ = 'Europe/Berlin';

//#region Paths
app.locals.path = {
  root: dirname(require.main.filename),
  plugins: `${dirname(require.main.filename)}/plugins`,
  public: `${dirname(require.main.filename)}/public`,
  source: `${dirname(require.main.filename)}/src`,
}
//#endregion


//#region Nesessary json files
const jsonFiles = ['configuration.json', 'stylesheet.json'];
for (var i = 0; i < jsonFiles.length; i++) {
  if(!fs.existsSync(`${app.locals.path.source}/models/${jsonFiles[i]}`)) {
    fs.copyFileSync(`${app.locals.path.source}/backups/${jsonFiles[i]}.temp`, `${app.locals.path.source}/models/${jsonFiles[i]}`);
  }
}

app.locals.stylesheet = JSON.parse(fs.readFileSync(`${app.locals.path.source}/models/stylesheet.json`, 'utf-8'));
app.locals.configuration = JSON.parse(fs.readFileSync(`${app.locals.path.source}/models/configuration.json`, 'utf-8'));
app.locals.package = JSON.parse(fs.readFileSync(`${app.locals.path.root}/package.json`, 'utf-8'));

app.locals.startMenuItems = [ ];

(async () => {
  // const server = https.createServer({
  //   key: fs.readFileSync(`${app.locals.path.source}/secure/${app.locals.configuration.certificate.key}`),
  //   cert: fs.readFileSync(`${app.locals.path.source}/secure/${app.locals.configuration.certificate.chain}`),
  //   pfx: fs.readFileSync(`${app.locals.path.source}/secure/${app.locals.configuration.certificate.pfx}`),
  //   passphrase: "password",
  //   //cert: fs.readFileSync(`${app.locals.path.source}/secure/${app.locals.configuration.certificate.chain}`),
  // }, app);
const securePath = `${app.locals.path.source}/secure`;
const certConfig = app.locals.configuration.certificate;

let httpsOptions = {};

if (certConfig.pfx) {
    httpsOptions = {
        pfx: fs.readFileSync(`${securePath}/${certConfig.pfx}`),
        passphrase: certConfig.passphrase
    };
} else {
    httpsOptions = {
        key: fs.readFileSync(`${securePath}/${certConfig.key}`),
        cert: fs.readFileSync(`${securePath}/${certConfig.chain}`)
    };
}

const server = https.createServer(httpsOptions, app);

  // const wss = new WebSocket.Server({ server });
  // wss.on('connection', socket => {
  // socket.send('HELLO')
  // });


  const io = new Server(server, {
    pingTimeout: 60000,
    maxHttpBufferSize: 1e8, // 100 MB
  });

  //#endregion


  //#region Services/DatabaseModel
  let service = new Map();
  let databaseModel = new Map();

  let SocketManager = require(`@services/socketManager.js`);
  let SqlManager = require(`@services/sqlManager.js`);
  let EventManager = require(`@services/eventManager.js`);
  let NotifyTrayManager = require(`@services/notifyTrayManager.js`);
  let PluginManager = require(`@services/pluginManager.js`);
  let FileSystemManager = require(`@services/fileSystemManager.js`);
  let AuthenticationManager = require(`@services/authenticationManager.js`);
  let ActiveDirectory = require(`@services/activeDirectoryManager.js`);
  let VaultifyManager = require(`@services/vaultifyManager.js`);
  let RBACManager = require(`@services/rbacManager.js`);

  service.set('socketManager', new SocketManager(io));
  await service.get('socketManager').addAsync('/');
  await service.get('socketManager').addAsync('admin');

  service.set('sqlManager', new SqlManager());
  service.get('sqlManager').addInstance('main', app.locals.configuration.integration.sql.connect);

  databaseModel.set('eventlog', require(`${app.locals.path.source}/models/eventlogModel`)(service.get('sqlManager').getInstance('main')));
  databaseModel.set('eventlogView', require(`@models/eventlogView`)(service.get('sqlManager').getInstance('main')));
  service.set('eventManager', new EventManager(app, databaseModel.get('eventlog'), databaseModel.get('eventlogView'), service.get('socketManager')));

  databaseModel.set('notifyTrayModel', require(`@models/notifyTrayModel`)(service.get('sqlManager').getInstance('main')));
  databaseModel.set('notifyTrayObjectModel', require(`@models/notifyTrayObjectsModel`)(service.get('sqlManager').getInstance('main')));
  databaseModel.set('notifyTrayView', require(`@models/notifyTrayView`)(service.get('sqlManager').getInstance('main')));
  service.set('notifyTray', new NotifyTrayManager(databaseModel.get('notifyTrayModel'), databaseModel.get('notifyTrayView'), databaseModel.get('notifyTrayObjectModel')) );

  databaseModel.set('plugin', require(`@models/pluginModel`)(service.get('sqlManager').getInstance('main')));
  databaseModel.set('authentication', require(`@models/authenticationModel`)(service.get('sqlManager').getInstance('main')));

  service.set('fileSystemManager', new FileSystemManager());


  databaseModel.set('vault', require(`@models/vaultModel`)(service.get('sqlManager').getInstance('main')));
  service.set('vaultifyManager', new VaultifyManager(databaseModel.get('vault'), "123"));

  databaseModel.set('authenticationGroupsModel', require(`@models/authenticationGroupsModel`)(service.get('sqlManager').getInstance('main')));
  databaseModel.set('authenticationRolesModel', require(`@models/authenticationRolesModel`)(service.get('sqlManager').getInstance('main')));
  databaseModel.set('groupClosureModel', require(`@models/groupClosureModel`)(service.get('sqlManager').getInstance('main')));
  databaseModel.set('groupModel', require(`@models/groupModel`)(service.get('sqlManager').getInstance('main')));
  databaseModel.set('groupRolesModel', require(`@models/groupRolesModel`)(service.get('sqlManager').getInstance('main')));
  databaseModel.set('objectSourceModel', require(`@models/objectSourceModel`)(service.get('sqlManager').getInstance('main')));
  databaseModel.set('permissionModel', require(`@models/permissionModel`)(service.get('sqlManager').getInstance('main')));
  databaseModel.set('roleModel', require(`@models/roleModel`)(service.get('sqlManager').getInstance('main')));
  databaseModel.set('rolePermissionsModel', require(`@models/rolePermissionsModel`)(service.get('sqlManager').getInstance('main')));

  service.set('authenticationManager', new AuthenticationManager(databaseModel.get('authentication'), app.locals.configuration.integration.token.secret));
  service.set('rbacManager', new RBACManager(databaseModel));

  service.set('activeDirectoryManager', new ActiveDirectory(app.locals.configuration.integration.activedirectory))

  // everytime last created service!
  service.set('pluginManager', new PluginManager(app, databaseModel.get('plugin'), app.locals.path.plugins, app.locals.configuration.plugin.chown, service));

  exports.databaseModel = databaseModel;
  exports.service = service;
  exports.path = app.locals.path;
  //#endregion


  //#region Service-Registration/Middleware/Utils/Helpers
  require(`${app.locals.path.root}/utils.js`);
  let helpers = service.get('fileSystemManager').loadAllFiles(`${app.locals.path.public}/helpers`, '.js');
  exports.helpers = helpers;

  // app.use(service.get('vaultifyManager').createMiddleware());
  app.use(service.get('rbacManager').requirePermissionMiddleware());

  app.use(express.urlencoded({ extended: true }));
  app.use(express.json());
  app.use(cookieParser());
  app.use(favicon(`${app.locals.path.public}/images/radix_os_icon.ico`));

  app.use(express.static(app.locals.path.root));
  app.use(express.static(app.locals.path.public));
  app.use(express.static(app.locals.path.source));



  app.use(function(request, response, next) { 
    if (!request.secure) {
        return response.redirect("https://" + request.headers.host + request.url + app.locals.configuration.server.port);
    }
    next(); // Http redirection to secure protocol
  })
  //#endregion

  
  //#region App config values
  app.set('view engine', '.hbs');
  app.set('views', [
    `${app.locals.path.public}/views`,
    `${app.locals.path.public}/views/integrated`
  ]);
  app.set('trust proxy', true)
  //#endregion

  //#region Error exception handling
  app.on('uncaughtException', (err) => service.get('eventManager').write(null, 8, null, err ));
  process.on('uncaughtException', (err) => service.get('eventManager').write(null, 8, null, err ));
  process.on('unhandledRejection', (reason, promise) => service.get('eventManager').write(null, 8, null, reason ));
  //#endregion


  app.engine('hbs', create({
    extname: 'hbs',
    helpers: helpers,
    partialsDir: `${app.locals.path.public}/views/partials`,
    layoutsDir: `${app.locals.path.public}/views/layouts`,
    defaultLayout: `${app.locals.path.public}/views/layouts/default.hbs`
  }).engine)


  server.listen(app.locals.configuration.server.port, () => {
    (async () => {
      const databaseTest = await service.get('sqlManager').test("main"); // Check if database connection is established
      service.get('eventManager').write(null, databaseTest.levelId, null, databaseTest.message);
      
      // Loading plugins
      const plugins = await service.get('pluginManager').loadAll()

      plugins.forEach(plugin => {
        service.get('eventManager').write(null, plugin.levelId, null, `${plugin.pluginName} v${plugin.metadata.version} ${plugin.message}`);      
      });
      

      //#region Menu-Generator
      app.use(async (req, res, next) => {
        next();
      });
      //#endregion


      //#region Implement routes
      require(`${app.locals.path.source}/routes/loginRoutes.js`).route(app, service); // #1 - no token security! important: first!!!
      require(`${app.locals.path.source}/routes/indexRoutes.js`).route(app, service); // #2 - token security enabled at this point
      require(`${app.locals.path.source}/routes/adminRoutes.js`).route(app, service); // #3 - token security always enabled
      //#endregion

      app.use(service.get('authenticationManager').authenticate());

      //#region Implements sockets
      require(`${app.locals.path.source}/sockets/mainSocket.js`)(
        app, 
        service.get('socketManager'), 
        '/', 
        service.get('pluginManager'), 
        databaseModel.get('authentication'), 
        service.get('fileSystemManager'), 
        service.get('eventManager'), 
        service.get('activeDirectoryManager')
      );
      require(`${app.locals.path.source}/sockets/adminSocket.js`)(
        app, 
        service.get('socketManager'), 
        'admin', 
        service.get('eventManager')
      );
      //#endregion

    })();

    setTimeout(() => {
      service.get('eventManager').write(null, 1, null, 
        `${app.locals.configuration.server.name} is running`,
        `fqdn: https://${os.hostname()}:${app.locals.configuration.server.port}/`,
        `process id: ${process.pid}`,
        `url: ${os.hostname()}`,
        `port: ${app.locals.configuration.server.port}`
      )
    }, 1000);
  });
})();