Add GET .../admin/account/:username/allowance endpoint

backend/api/admin/adminController.js

@@ -77,6 +77,21 @@ const updatePermissions = async (req, res) => {
     }
 };
 
+const getAccountAllowance = async (req, res) => {
+    try {
+        // TODO: Input verification logic?
+        const accountName = req.params.username;
+        const response = await adminService.getAccountAllowance(accountName);
+        debug.info(`Response for getting a family member's allowance: ${JSON.stringify(response)}`);
+
+        if (!response.success) res.status(500).json(response);
+        else res.status(200).json(response);
+    } catch (error) {
+        debug.error(error.stack);
+        res.status(500).json({ message: error.message, error: error.stack });
+    }
+};
+
 // Request body:
 // ```
 // {
@@ -99,4 +114,4 @@ const setAccountAllowance = async (req, res) => {
     }
 };
 
-module.exports = { getAllBalances, addNewAccount, keysend, updatePermissions, setAccountAllowance };
+module.exports = { getAllBalances, addNewAccount, keysend, updatePermissions, getAccountAllowance, setAccountAllowance };

backend/api/admin/adminService.js

@@ -35,6 +35,28 @@ const updatePermissions = async (accountName, newPermissions) => {
     return { success: true };
 };
 
+const getAccountAllowance = async (accountName) => {
+    const docRef = await collection.doc(DOC_NAME).collection(MEMBERS_SUBCOLLECTION_NAME).doc(accountName);
+    const doc = await docRef.get();
+    if (!doc.exists) {
+        const errMsg = `Firestore document "${docName}/${subcollectionName}/${accountName}" does not exist in the families collection`;
+        debug.error(errMsg);
+        throw new Error(errMsg);
+    }
+
+    // TODO: Error handling?
+    let data = doc.data();
+    // If permissions indicate that we don't have an allowance, then ignore
+    // whatever value is in that allowance field.
+    if (!data.permissions.hasAllowance) {
+        return { success: true, allowance: -1 };
+    }
+
+    // TODO: Error handling?
+    let allowance = data.allowance;
+    return { success: true, allowance };
+};
+
 const setAccountAllowance = async (accountName, newAllowance) => {
     const docRef = await collection.doc(DOC_NAME).collection(MEMBERS_SUBCOLLECTION_NAME).doc(accountName);
     const doc = await docRef.get();
@@ -49,4 +71,4 @@ const setAccountAllowance = async (accountName, newAllowance) => {
     return { success: true };
 };
 
-module.exports = { getAllBalances, updatePermissions, setAccountAllowance };
+module.exports = { getAllBalances, updatePermissions, getAccountAllowance, setAccountAllowance };

backend/api/admin/index.js

@@ -1,12 +1,13 @@
 const express = require('express');
 const router = express();
 
-const { getAllBalances, addNewAccount, keysend, updatePermissions, setAccountAllowance } = require('./adminController');
+const { getAllBalances, addNewAccount, keysend, updatePermissions, getAccountAllowance, setAccountAllowance } = require('./adminController');
 
 router.get('/balances', getAllBalances);
 router.post('/add', addNewAccount);
 router.post('/transfer', keysend);
 router.post('/account/:username/permissions', updatePermissions)
+router.get('/account/:username/allowance', getAccountAllowance)
 router.post('/account/:username/allowance', setAccountAllowance)
 
 module.exports = router;