refactor: migrate to PostgreSQL + Sequelize

server/modules/db.js

@@ -0,0 +1,74 @@
+'use strict'
+
+/* global wiki */
+
+const fs = require('fs')
+const path = require('path')
+const _ = require('lodash')
+
+/**
+ * PostgreSQL DB module
+ */
+module.exports = {
+
+  Sequelize: require('sequelize'),
+
+  /**
+   * Initialize DB
+   *
+   * @return     {Object}  DB instance
+   */
+  init() {
+    let self = this
+
+    let dbModelsPath = path.join(wiki.SERVERPATH, 'models')
+
+    // Define Sequelize instance
+
+    self.inst = new self.Sequelize(wiki.config.db.db, wiki.config.db.user, wiki.config.db.pass, {
+      host: wiki.config.db.host,
+      port: wiki.config.db.port,
+      dialect: 'postgres',
+      pool: {
+        max: 10,
+        min: 0,
+        idle: 10000
+      }
+    })
+
+    // Attempt to connect and authenticate to DB
+
+    self.inst.authenticate().then(() => {
+      wiki.logger.info('Connected to PostgreSQL database.')
+    }).catch(err => {
+      wiki.logger.error('Failed to connect to MongoDB instance.')
+      return err
+    })
+
+    // Load DB Models
+
+    fs
+      .readdirSync(dbModelsPath)
+      .filter(function (file) {
+        return (file.indexOf('.') !== 0 && file.indexOf('_') !== 0)
+      })
+      .forEach(function (file) {
+        let modelName = _.upperFirst(_.camelCase(_.split(file, '.')[0]))
+        self[modelName] = self.inst.import(path.join(dbModelsPath, file))
+      })
+
+    // Associate DB Models
+
+    require(path.join(dbModelsPath, '_relations.js'))(self)
+
+    // Sync DB
+
+    self.onReady = self.inst.sync({
+      force: false,
+      logging: wiki.logger.verbose
+    })
+
+    return self
+  }
+
+}