Authentication (#22)

* Authorization added

* added secret to password, md5 hashing, removed promise from verifyToken, deleted links when not authorized

* added dbinsert script

* turned verifyToken to middleware, added description for dbinsert, added hidden csrf field in auth form

* added middlewares, user model and controller

* JSDoc fix

* wrong password processing fix

* added comments to dbinsert script, moved salt and passHash to singe db doc

* Moved salt to .env, upgradedscript for generating password was, fixed comments and JSDoc

* Deleted using salt (now user is only one), changed verifying password to bcrypt.compare, added httpyOnly property to jwt cookie

generatePassword.js

@@ -0,0 +1,45 @@
+#!/usr/bin/env node
+
+let { password: db } = require('./src/utils/database');
+const program = require('commander');
+
+const bcrypt = require('bcrypt');
+const saltRounds = 12;
+
+/**
+ * Script for generating password, that will be used to create and edit pages in CodeX.Docs.
+ * Hashes password with bcrypt and inserts it to the database.
+ * @see {https://github.com/tj/commander.js | CommanderJS}
+ */
+program
+  .description('Application for generating password, that will be used to create and edit pages in CodeX.Docs.')
+  .usage('[password]')
+  .arguments('<password>')
+  .action(async function (password) {
+    bcrypt.hash(password, saltRounds, async (error, hash) => {
+      if (error) {
+        return 'Hash generating error';
+      }
+
+      const userDoc = { passHash: hash };
+
+      await db.remove({}, {multi: true});
+      await db.insert(userDoc);
+
+      console.log('Password was successfully generated');
+    });
+  });
+
+program.on('--help', () => {
+  console.log('');
+  console.log('Example:');
+  console.log('yarn generatePassword qwerty');
+  console.log('');
+});
+
+program.parse(process.argv);
+
+if (process.argv.length !== 3) {
+  console.error('Invalid command: %s\nSee --help or -h for a list of available commands.', program.args.join(' '));
+  process.exit(1);
+}