adding option for signed GS URLs

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@swrlab/node-storage-wrapper",
-	"version": "0.0.11",
+	"version": "0.0.12",
 	"description": "Wrapping AWS S3, GCP GCS, file storage",
 	"main": "./src/index.js",
 	"engines": {

src/createUri.js

@@ -8,9 +8,11 @@
 
 module.exports = {
 	s3: (bucket, path) => {
+		// return data
 		return ['s3:/', bucket, path].join('/');
 	},
 	gs: (bucket, path) => {
+		// return data
 		return ['gs:/', bucket, path].join('/');
 	},
 }

src/createUrl.js

@@ -0,0 +1,54 @@
+/*
+
+	node-storage-wrapper
+
+	This module provides easy access to combine bucket + path to unique URIs
+
+*/
+
+module.exports = async function (uri, ttl) {
+	try {
+		if (uri.substr(0, 5).toLowerCase() == 's3://') {
+			// log progress
+			this.sdk.log(this, 'log', ['storage.createUrl.aws >', uri]);
+
+			return Promise.reject('not implemented');
+		} else if (uri.substr(0, 5).toLowerCase() == 'gs://') {
+			// google cloud storage
+			let structure = uri.substr(5).split('/');
+			let bucket = structure.shift();
+			let path = structure.join('/');
+
+			// log progress
+			this.sdk.log(this, 'log', ['storage.createUrl.gcp >', uri]);
+
+			// set config
+			const config = {
+				action: 'read',
+				expires: Date.now() + ttl,
+			};
+
+			// create link
+			var [url] = await this.sdk.gs.bucket(bucket).file(path).getSignedUrl(config);
+
+			// return link
+			return Promise.resolve(url);
+		} else if (
+			uri.substr(0, 7).toLowerCase() == 'http://' ||
+			uri.substr(0, 8).toLowerCase() == 'https://'
+		) {
+			// log progress
+			this.sdk.log(this, 'log', ['storage.createUrl.https >', uri]);
+
+			// return link
+			return Promise.resolve(uri);
+		} else {
+			// log progress
+			this.sdk.log(this, 'log', ['storage.createUrl.local >', uri]);
+
+			return Promise.reject('not implemented');
+		}
+	} catch (err) {
+		return Promise.reject(err);
+	}
+};

src/index.js

@@ -52,6 +52,7 @@ function StorageWrapper(config) {
 
 	// import functions
 	this.createUri = require('./createUri');
+	this.createUrl = require('./createUrl');
 	this.delete = require('./delete');
 	this.list = require('./list');
 	this.load = require('./load');