zone base locations

src/controllers/departmentController.js

@@ -629,4 +629,56 @@ exports.addDepartment = async (request, reply) => {
       } catch (err) {
         reply.status(500).send({ message: err.message });
       }
-  };
+  };
+
+  const getLocationsByZone = async (zone) => {
+    try {
+      const result = await City.aggregate([
+        {
+          $match: {
+            zone: { $regex: `^${zone}$`, $options: "i" }, // Case-insensitive match for the zone
+          },
+        },
+        {
+          $unwind: "$location" // Unwind the location field if it is an array
+        },
+        {
+          $group: {
+            _id: "$zone", // Group by zone
+            locations: { $addToSet: { $toUpper: "$location" } }, // Collect unique locations in uppercase
+          },
+        },
+        {
+          $project: {
+            _id: 0, // Exclude the _id field
+            zone: "$_id", // Include zone
+            locations: 1 // Just return the locations field as is
+          },
+        },
+      ]);
+  
+      return result;
+    } catch (err) {
+      console.error(err);
+      throw new Error("Error fetching locations.");
+    }
+  };
+  
+  
+  
+  
+  exports.getLocationsByZone = async (req, reply) => {
+    try {
+      const { zone } = req.params; // Get zone from path params
+  
+      if (!zone) {
+        return reply.status(400).send({ message: "Zone is required." });
+      }
+  
+      const locations = await getLocationsByZone(zone);
+      reply.send({ status_code: 200, data: locations });
+    } catch (err) {
+      reply.status(500).send({ message: err.message });
+    }
+  };
+  

src/routes/departmentRoute.js

@@ -381,6 +381,23 @@ module.exports = function (fastify, opts, next) {
             },
             handler:departmentController.getZonebasedLocations
           });
+
+          fastify.route({
+            method: "GET",
+            url: "/api/zonebasedlocations/:zone",
+            schema: {
+              tags: ["Department"],
+              description: "Get the locations by zone",
+              summary: "Get the locations by zone",
+              params: {
+                type: "object",
+                properties: {
+                  zone: { type: "string" },  
+                },
+              },
+            },
+            handler:departmentController.getLocationsByZone
+          });
           
 
     next();