Adding a setup function to connect to the database for migrations

migrations/setup.js

@@ -0,0 +1,73 @@
+console.log('Running subscript')
+
+const mongoose = require('mongoose')
+const dotenv = require('dotenv')
+let config = require('config'); //we load the db location from the JSON files
+
+
+function getEnvFile(nodeEnv){
+    if (process.env.NODE_ENV==="test"){
+        return ".env.test"
+    }else{
+        return ".env"
+    }
+}
+
+function GetConfigDetailsAndConnect(){
+    var envFile = getEnvFile(process.env.NODE_ENV)
+    dotenv.config({path: envFile})
+    console.log('Running "' + config.util.getEnv('NODE_ENV') + '" environment')
+
+    let dbHost = config.get('dbConfig.host')
+    let port = config.get('dbConfig.port')
+    console.log(config.get('dataAPI.url'))
+
+    mongoose.connect(dbHost, {
+        useNewUrlParser: true,
+        useUnifiedTopology: true
+    })
+
+    const db = mongoose.connection;
+    db.once("open", (_) => {
+        console.log("Database connected:", dbHost);
+    });
+
+    return db;
+
+}
+
+module.exports= GetConfigDetailsAndConnect
+
+
+
+
+
+
+
+
+//=------------------------------
+//=------------------------------
+//=------------------------------
+//=------------------------------
+// If want to make into command line script with flags
+
+// Allowing command line arguments
+// --env indicates which environment you are running the migration for
+// The options should be
+
+//const { exit } = require('yargs')
+
+// const yargs = require('yargs');
+// var argv = require('yargs/yargs')(process.argv.slice(2))
+//     .usage('Usage: $0 <command> [options]')
+//     .command('migrate', 'Migrate db to contain live featur in forms')
+//     .alias('e', 'env')
+//     .default('env', "dev")
+//     .describe('e', 'The environment you are working with')
+//     .alias('h', 'help')
+//     .demandOption(['env'])
+//     .help('h')
+//     .argv;
+
+// console.log("Node Environment:")
+// console.log(argv.env);