feat: Move to passport for authentication (#1934)

- Added `accountProvisioner`
- Move authentication to use passport strategies
- Make authentication more pluggable
- Change language of services -> providers

closes #1120

server/services/index.js

@@ -1,27 +1,18 @@
 // @flow
-import path from "path";
 import debug from "debug";
-import fs from "fs-extra";
+import { requireDirectory } from "../utils/fs";
 
 const log = debug("services");
 const services = {};
 
 if (!process.env.SINGLE_RUN) {
-  fs.readdirSync(__dirname)
-    .filter(
-      (file) =>
-        file.indexOf(".") !== 0 &&
-        file !== path.basename(__filename) &&
-        !file.includes(".test")
-    )
-    .forEach((fileName) => {
-      const servicePath = path.join(__dirname, fileName);
-      const name = path.basename(servicePath.replace(/\.js$/, ""));
-      // $FlowIssue
-      const Service = require(servicePath).default;
+  requireDirectory(__dirname).forEach(([module, name]) => {
+    if (module && module.default) {
+      const Service = module.default;
       services[name] = new Service();
       log(`loaded ${name} service`);
-    });
+    }
+  });
 }
 
 export default services;