Add Login (#2)

* Add dependencies

* Add barebones app

* Ignore .DS_Store

* Add base static assets

* Expose port on docker

* Ignore env files

* Add instructions to use env.dist

* Add twitter configs

* Use latest node version

* Read env file properly

* Add dependencies to start parsing twitter

* Add helper for twitter login operations

* Add handler for titter login routes

* Use twitter handler

* Add JWT related keys

* Add jwt dependencies

* Move index static file

* Rename twitter handler to auth, add jwt support

* Add new yarn lock

* Add instructions for twitter

* Remove twitter image

* Fix return value lint errors

* Ignore require-yield errors in linter

1 files changed, 94 insertions, 1 deletions

diff --git a/lib/dasein.js b/lib/dasein.js
index 8de32c8..38654a4 100644
--- a/lib/dasein.js
+++ b/lib/dasein.js
@@ -1,13 +1,106 @@
 'use strict';
 
+const Koa = require('koa');
+const KoaJwt = require('koa-jwt');
+const KoaStatic = require('koa-static');
+const KoaRoute = require('koa-route');
+
+const AuthHandler = require('./handlers/auth');
+
 const internals = {};
 
+internals.k401Location = '/401.html';
+internals.kMainLocation = '/';
+
 module.exports = internals.Dasein = class Dasein {
 
+  constructor(config) {
+
+    Object.assign(this, config);
+  }
+
   run() {
 
-    console.log('OK');
+    this._initializeServer();
+    this._startServer();
+    this._printBanner();
 
     return Promise.resolve();
   }
+
+  _initializeServer() {
+
+    this._app = Koa();
+
+    this._app.keys = this.cookieKeys;
+
+    this._app.use(KoaStatic(this.staticDirectory));
+
+    // Redirect all 401s to the 401 static page
+
+    this._app.use(function * (next) {
+
+      try {
+        yield next;
+      }
+      catch (err) {
+        if (err.status === 401) {
+          return this.redirect(internals.k401Location);
+        }
+
+        throw err;
+      }
+    });
+
+    this._app.use(KoaJwt({
+      secret: this.jwt.secret,
+      passthrough: true,
+      cookie: this.jwt.cookieName
+    }));
+
+    // Handlers for Twitter Auth Related Routes
+
+    const authHandler = new AuthHandler({
+      hostname: this.hostname,
+      jwt: this.jwt,
+      twitter: this.twitter
+    });
+    this._app.use(KoaRoute.get('/login', authHandler.login()));
+    this._app.use(KoaRoute.get('/login-callback', authHandler.callback()));
+    this._app.use(KoaRoute.get('/logout', authHandler.logout()));
+
+    // The index
+
+    this._app.use(function * () {
+
+      if (this.state.user) {
+        this.body = `<img src="${this.state.user.profile_image_url_https}"> Hello ${this.state.user.screen_name}`;
+        return;
+      }
+
+      this.body = 'Go to /login to login';
+      return;
+    });
+  }
+
+  _startServer() {
+
+    this._app.listen(this.port);
+  }
+
+  // Prints the banner.
+  _printBanner() {
+
+    console.log('        .');
+    console.log('       /');
+    console.log('    +-----+');
+    console.log(`    | o o |  - Listening Gladly, Try me on port: ${this.port}`);
+    console.log('    +-----+');
+    console.log('  +---------+');
+    console.log(' /|    [][] |\\');
+    console.log(' ||         | |');
+    console.log(' ||         |  \\c');
+    console.log(' ^+---------+');
+    console.log('      (.) ');
+  }
 };