Added basic private

private/database/DatabaseConnection.js

@@ -0,0 +1,126 @@
+// Copyright (c) 2018 Dominic Masters
+//
+// MIT License
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+const
+  pgp = require('pg-promise')(),
+  fs = require('fs'),
+  path = require('path')
+;
+
+const QUERIES_PATH = 'queries';
+
+class DatabaseConnection {
+  constructor(app) {
+    this.app = app;
+  }
+
+  getConfig() {return this.app.getConfig();}//Short Hand Method
+
+  getQueriesPath() {
+    return path.join(__dirname, QUERIES_PATH);
+  }
+
+  loadQueries() {
+    //Load Queries
+    let queries = {};
+
+    if(fs.existsSync(this.getQueriesPath())) {
+      let queryFiles = fs.readdirSync(this.getQueriesPath());
+      for(var i = 0; i < queryFiles.length; i++) {
+        let file = queryFiles[i];
+        let x = fs.readFileSync(path.join(this.getQueriesPath(), file), 'utf8');
+        queries[file.replace(".sql", "")] = x;
+      }
+    }
+
+    this.queries = queries;
+    return queries;
+  }
+
+  isConnected() {
+    return typeof this.db !== typeof undefined;
+  }
+
+  async connect() {
+    await this.connectThen();
+  }
+
+  async connectThen() {
+    if(this.isConnected()) return true;
+
+    if(
+      !this.getConfig().getValueOf("database.connection")
+      && !this.getConfig().getValueOf("database.url")
+    ) {
+      throw new Error("Missing DB Credentials.");
+    }
+
+    this.db = pgp(
+      this.getConfig().getValueOf("database.connection") ||
+      this.getConfig().getValueOf("database.url")
+    );
+
+    //Fire the event
+    if(typeof this.app.onDatabaseConnected === "function") {
+      await this.app.onDatabaseConnected(this);
+    }
+
+    return true;
+  }
+
+  getQuery(name) {
+    return this.queries[name];
+  }
+
+  //Database Shorthand functions
+  async none(queryName, data) {
+    let q = this.getQuery(queryName);
+    return await this.db.none(q, data);
+  }
+
+  async any(queryName, data) {
+    let q = this.getQuery(queryName);
+    let x = await this.db.any(q, data);
+    return x;
+  }
+
+  async one(queryName, data) {
+    let q = this.getQuery(queryName);
+    let x = await this.db.one(q, data);
+    return x;
+  }
+
+  async oneOrNone(queryName, data) {
+    let q = this.getQuery(queryName);
+    let x = await this.db.oneOrNone(q, data);
+    return x;
+  }
+
+  async query(queryName, data) {
+    let q = this.getQuery(queryName);
+    let x = await this.db.query(q, data);
+    return x;
+  }
+};
+
+module.exports = DatabaseConnection;