very early code for querying

api/database.js

@@ -19,6 +19,15 @@ if (!process.env.FIREBASE_CONFIG) {
                 .once('value')
                 .then(snapshot => snapshot.val()),
 
+        query: (key, condition) =>
+            firebase
+                .database()
+                .ref(key)
+                .orderByChild(condition.key)
+                .equalTo(condition.value)
+                .once('value')
+                .then(snapshot => snapshot.val()),
+
         post: (key, data) =>
             firebase
                 .database()

api/routes.js

@@ -19,12 +19,30 @@ router.get('/get-token', (req, res) => {
     return res.send({ token: hash });
 });
 
-router.get(/^\/[0-9a-z]{64}/, (req, res) =>
-    database
-        .get(req.path)
+function convert(value, type) {
+    const typemap = {
+        'number': Number,
+        'boolean': Boolean,
+        'string': String,
+    };
+    const converter = typemap[type] || String;
+    return converter(value);
+}
+
+router.get(/^\/[0-9a-z]{64}/, (req, res) => {
+    const { key, value, type } = req.query;
+    let reference = null;
+
+    if (key && value) {
+        reference = database.query(req.path, { key, value: convert(value, type) });
+    } else {
+        reference = database.get(req.path, { key, value })
+    }
+
+    reference
         .then(result => res.status(200).send({ result, ok: true }))
         .catch(() => res.status(500).send({ ok: false }))
-);
+});
 
 router.post(/^\/[0-9a-z]{64}/, checkContentType, (req, res) =>
     database

package.json

@@ -8,7 +8,7 @@
   "scripts": {
     "start": "run-s client:build server:start",
     "prod": "PORT=80 npm start",
-    "server:start": "node ./server",
+    "server:start": "nodemon ./server",
     "client:build": "webpack",
     "heroku-postbuild": "npm run client:build"
   },