Add express and postgresql with knex

.prettierrc

@@ -0,0 +1,5 @@
+{
+  "tabWidth": 2,
+  "singleQuote": true,
+  "trailingComma": "es5"
+}

server/knexfile.js

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+const path = require('path');
+const config = require('./src/config');
+
+const migrations = {
+  tableName: 'knex_migrations',
+  directory: path.normalize(path.join(__dirname, 'src/db/migrations')),
+};
+
+module.exports = {
+  [config.env]: {
+    client: 'pg',
+    connection: config.databaseConnection,
+    pool: {
+      min: config.databasePool.min,
+      max: config.databasePool.max,
+    },
+    debug: config.databaseDebug,
+    migrations,
+  },
+};

server/package.json

@@ -5,9 +5,15 @@
   "license": "MIT",
   "scripts": {
     "dev": "backpack",
-    "build": "backpack build"
+    "build": "backpack build",
+    "migrate": "knex-migrate",
+    "reset-db": "knex-migrate down --to 0 && knex-migrate up"
   },
   "dependencies": {
-    "backpack-core": "^0.8.3"
+    "backpack-core": "^0.8.3",
+    "express": "^4.16.4",
+    "knex": "^0.16.3",
+    "knex-migrate": "^1.7.2",
+    "pg": "^7.9.0"
   }
 }

server/src/config.js

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+const env = process.env.NODE_ENV || 'development';
+
+// Used on development
+const base = {
+  databaseConnection: {
+    host: '127.0.0.1',
+    user: 'twitterclone',
+    password: 'twitterclone',
+    database: 'dev_twitter_clone',
+  },
+  databasePool: {
+    min: 2,
+    max: 10,
+  },
+  databaseDebug: true,
+  env,
+};
+
+const test = {
+  ...base,
+  databaseConnection: {
+    ...base.databaseConnection,
+    database: 'test_twitter_clone',
+  },
+  databaseDebug: false,
+};
+
+const production = {
+  ...base,
+  databaseConnection: process.env.PROD_DB_URL,
+  databaseDebug: false,
+};
+
+module.exports = { development: base, test, production }[env];

server/src/db/index.js

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+import knex from 'knex';
+import knexfile from '../../knexfile';
+import config from '../config';
+
+export default knex(knexfile[config.env]);

server/src/db/migrations/20190328003112_setup_db.js

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+exports.up = async function(knex) {
+  // UUID extension
+  await knex.raw('CREATE EXTENSION IF NOT EXISTS "uuid-ossp"');
+};
+
+exports.down = async function(knex) {
+  await knex.raw('DROP EXTENSION IF EXISTS "uuid-ossp"');
+};

server/src/db/migrations/20190328003119_initial_tables.js

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+exports.up = async function(knex) {
+  // User table
+  await knex.schema.createTable('users', table => {
+    table
+      .uuid('id')
+      .notNullable()
+      .primary()
+      .defaultTo(knex.raw('uuid_generate_v4()'));
+    table.string('username').unique();
+    table.timestamps(true, true);
+  });
+};
+
+exports.down = async function(knex) {
+  await knex.schema.dropTableIfExists('users');
+};

server/src/index.js

@@ -1 +1,18 @@
-console.log("Hello Server!")
+import express from 'express';
+import db from './db';
+
+const app = express();
+
+app.get('/', (req, res) => {
+  db('users')
+    .first()
+    .then(res => {
+      console.log(' res', res);
+    });
+
+  res.send('hello!');
+});
+
+app.listen(4000, () => {
+  console.log('Listening at port 4000');
+});