Calculate percentage for shipments stat on dashboard screen

Author: kkamara

grocery-store-management-system.postman_collection.json

@@ -466,7 +466,7 @@
 									"response": []
 								},
 								{
-									"name": "Ongoing Shipments Count",
+									"name": "Ongoing Shipments Percentage",
 									"request": {
 										"auth": {
 											"type": "bearer",

src/models/v1/shipping.js

@@ -16,9 +16,9 @@ module.exports = (sequelize, DataTypes) => {
     /**
      * @returns {object|false}
      */
-    static async getAdminOngoingShipmentsCountStat() {
+    static async getAdminOngoingShipmentsPercentageStat() {
       try {
-        const result = await sequelize.query(
+        const part = await sequelize.query(
           `SELECT count(id) as count
             FROM ${this.getTableName()}
             WHERE status IS NULL`,
@@ -27,7 +27,20 @@ module.exports = (sequelize, DataTypes) => {
           },
         );
 
-        return { count: result[0].count };
+        const whole = await sequelize.query(
+          `SELECT count(id) as count
+            FROM ${this.getTableName()}`,
+          {
+            type: sequelize.QueryTypes.SELECT,
+          },
+        );
+
+        if (0 === whole[0].count) {
+          return { percentage: 0, };
+        }
+        
+        const result = (part[0].count / whole[0].count) * 100;
+        return { percentage: result };
       } catch(err) {
         if ("production" !== nodeEnv) {
           console.log(err);

src/routes/api/v1/web/stats/admin/shipments/ongoing/ongoing.js

@@ -7,14 +7,14 @@ const { message500 } = require("../../../../../../../../utils/httpResponses");
 const router = express.Router();
 
 router.get("/", adminAuthenticate, async (req, res) => {
-  const result = await db.sequelize.models.shipping.getAdminOngoingShipmentsCountStat();
+  const result = await db.sequelize.models.shipping.getAdminOngoingShipmentsPercentageStat();
   if (false === result) {
     res.status(status.UNAUTHORIZED);
     return res.json(message500);
   }
 
   res.status(status.OK);
-  return res.json({ data: result.count });
+  return res.json({ data: result.percentage });
 });
 
 module.exports = router;