Progress bar calculations added, displaying and updating the database

src/util/calculations.js

@@ -0,0 +1,45 @@
+const ObjectId = require('mongodb').ObjectId;
+
+async function calculatePlanProgress(plans, assets, userId) {
+    if (!plans || typeof plans.retirementAssets === 'undefined') {
+        console.error("Invalid plan document provided to calculatePlanProgress:", plans);
+        return 0;
+    }
+    if (!assets || typeof assets.find !== 'function') {
+        console.error("Invalid assetsCollection provided to calculatePlanProgress");
+        return 0;
+    }
+
+    try {
+        const userAssets = await assets.find({ userId: new ObjectId(userId) }).toArray();
+        const totalUserAssetValue = userAssets.reduce((total, asset) => total + asset.value, 0);
+        let percentage = 0;
+
+        if (plans.retirementAssets > 0) {
+            percentage = (totalUserAssetValue / plans.retirementAssets) * 100;
+        }
+        return percentage;
+    } catch (err) {
+        console.error("Error in calculatePlanProgress:", err);
+        return 0;
+    }
+}
+
+async function updatePlanProgressInDB(planId, percentage, plans) {
+    if (!plans || typeof plans.updateOne !== 'function') {
+        console.error("Error with the plans collection");
+        return;
+    }
+    if (typeof percentage !== 'number' || isNaN(percentage)) {
+        console.error(`Error with the percentage: ${percentage}`);
+        return;
+    }
+
+    try {
+        await plans.updateOne({ _id: new ObjectId(planId) }, { $set: { progress: parseFloat(percentage.toFixed(2)) } });
+    } catch (err) {
+        console.error("Error in updatePlanProgressInDB:", err);
+    }
+}
+
+module.exports = { calculatePlanProgress, updatePlanProgressInDB };