made changes in tanks controller

src/controllers/tanksController.js

@@ -142,54 +142,52 @@ exports.getTank = async (req, reply) => {
 //};
 
 
-
 exports.updateTanklevels = async (req, reply) => {
-    
     try {
-    const customerId = req.params.customerId;
-    const tank =  await Tank.find({customerId});
+      const customerId = req.params.customerId;
+      const tanks = await Tank.find({ customerId });
   
-
-   for (var i=0; i < tank.length; i++) {
-    const tankname = tank[i].tankName
-    const capacity = (tank[i].capacity).replace(/,/g, "")
-    
-    let Number = capacity-100         //Math.floor(Math.random() * capacity)
-   
-    
-    
-    //console.log(Number)
-    setInterval(async function () {
-      
-     // const randomNumber = Math.floor(Math.random() * capacity)
-      //const randomNumber = Math.floor(Math.random() * (5500 - 1000) + 1000);
-     
-     //console.log(tankname)
-     const randomNumber = Math.floor(Number/1.5)
-     
-     
-     const tank_info =await Tank.findOneAndUpdate({customerId:customerId,tankName:tankname},{$set:{waterlevel:randomNumber}})
-     console.log(tank_info)
-     Number = randomNumber
-
-    //return Number
-     
-    }, 2000);
- }
-
-
-
-   
-    return { message: 'Water level will be updated every 2 seconds' };
-  }
+      const intervals = {};
+  
+      for (const tank of tanks) {
+        const tankName = tank.tankName;
+        let capacity = parseInt(tank.capacity.replace(/,/g, ''), 10);
+  
+        let waterLevel = capacity - 100; // initial water level
+        const intervalId = setInterval(async function () {
+          const newWaterLevel = Math.floor(waterLevel / 1.5);
+  
+          const result = await Tank.findOneAndUpdate(
+            { customerId, tankName },
+            { $set: { waterlevel: newWaterLevel } }
+          );
+  
+          console.log(result);
+  
+          if (newWaterLevel === 0) {
+            clearInterval(intervals[tankName]);
+            console.log(`Stopped updating ${tankName}`);
+            return;
+          }
   
-     catch (err) {
+          waterLevel = newWaterLevel;
+        }, 2000);
+  
+        intervals[tankName] = intervalId;
+      }
+  
+      return { message: 'Water level updates started' };
+    } catch (err) {
       throw boom.boomify(err);
     }
   };
   
 
 
+   
+ 
+
+
 exports.getTanklevels = async (req, reply) => {
   try {
     const customerId = req.params.customerId;