diff --git a/src/server.js b/src/server.js
index 30f0ce3..24a40ec 100644
--- a/src/server.js
+++ b/src/server.js
@@ -1,6 +1,7 @@
 const express = require("express")
 const morgan = require("morgan")
 const cors = require("cors")
+// initializing express app
 const app = express()
 
 app.use(morgan("dev"))
@@ -9,5 +10,134 @@ app.use(express.json())
 
 // write your app code here
 
+const contacts = require("../data/contacts.js");
+const meetings = require("../data/meetings.js");
+
+
+
+// Middleware setup for logging and handling CORS
+app.use(morgan("dev"));
+app.use(cors());
+app.use(express.json());
 
 module.exports = app
+
+// intial  state setup for contacts and meetings
+const STATE = {
+    contacts,
+    nextContactId: 3,
+    meetings,
+    nextMeetingId: 4,
+  };
+
+// Function to get the next contact ID and meeting ID
+const getNextContactId = () => {
+    return STATE.nextContactId++;
+  };
+  
+  const getNextMeetingId = () => {
+    return STATE.nextMeetingId++;
+  };
+
+/**
+ * Function to find the index of an item in an array based on the ID in the request parameters.
+ * @param {array} array - The array to search in.
+ * @param {import('express').Request} req - The Express request object.
+ * @returns {number} - Index of the item in the array.
+ */
+const findStateIndex = (array, req) => {
+    const { id } = req.params;
+    const foundIndex = array.findIndex((contact) => contact.id === Number(id));
+    return foundIndex;
+  };
+  
+  // Route to get all contacts
+  app.get("/contacts", (req, res) => {
+    res.json({ contacts: STATE.contacts });
+  });
+  
+  // Route to add a new contact
+  app.post("/contacts", (req, res) => {
+    const count = STATE.contacts.push(req.body);
+    const newContact = { contact: STATE.contacts[count - 1] };
+    newContact.contact.id = getNextContactId();
+    res.status(201).json(newContact);
+  });
+  
+  // Route to get a specific contact by ID
+  app.get("/contacts/:id", (req, res) => {
+    const foundIndex = findStateIndex(STATE.contacts, req);
+    res.json({ contact: STATE.contacts[foundIndex] });
+  });
+  
+  // Route to delete a contact by ID
+  app.delete("/contacts/:id", (req, res) => {
+    const foundContactIndex = findStateIndex(STATE.contacts, req);
+    const [removedContact] = STATE.contacts.splice(foundContactIndex, 1);
+  
+    // Remove associated meetings for the deleted contact
+    STATE.meetings = STATE.meetings.filter(
+      (meeting) => meeting.contactId !== Number(req.params.id)
+    );
+  
+    res.json({ contact: removedContact });
+  });
+  
+  // Route to update a contact by ID
+  app.put("/contacts/:id", (req, res) => {
+    const foundIndex = findStateIndex(STATE.contacts, req);
+    const foundContact = (STATE.contacts[foundIndex] = {
+      ...req.body,
+      id: Number(req.params.id),
+    });
+  
+    res.json({ contact: foundContact });
+  });
+
+
+  // Code for the meeting part 
+
+  // Codes --- route for handling HTTP GET, Delete , Put , Post requests to the "/meetings by ID" endpoint. 
+
+app.get("/meetings", (req, res) => {
+    res.json({ meetings: STATE.meetings });
+  });
+  
+  app.get("/meetings/:id", (req, res) => {
+    const foundIndex = findStateIndex(STATE.meetings, req);
+    res.json({ meeting: STATE.meetings[foundIndex] });
+  });
+  
+  app.delete("/meetings/:id", (req, res) => {
+    const foundIndex = findStateIndex(STATE.meetings, req);
+    const [removedMeeting] = STATE.meetings.splice(foundIndex, 1);
+    res.json({ meeting: removedMeeting });
+  });
+  
+  app.put("/meetings/:id", (req, res) => {
+    const foundMeetingIndex = findStateIndex(STATE.meetings, req);
+    const foundMeeting = STATE.meetings[foundMeetingIndex];
+  
+    foundMeeting.name = req.body.name;
+    res.json({ meeting: foundMeeting });
+  });
+  
+  app.get("/contacts/:id/meetings", (req, res) => {
+    const foundContactIndex = findStateIndex(STATE.contacts, req);
+    const foundMeetings = STATE.meetings.filter(
+      (meeting) => meeting.contactId === Number(req.params.id)
+    );
+    res.json({ meetings: foundMeetings });
+  });
+  
+  app.post("/contacts/:id/meetings", (req, res) => {
+    const count = STATE.meetings.push(req.body);
+    const newMeeting = { meeting: STATE.meetings[count - 1] };
+  
+    newMeeting.meeting.id = getNextMeetingId();
+    newMeeting.meeting.contactId = Number(req.params.id);
+  
+    res.status(201).json(newMeeting);
+  });
+  
+  module.exports = app;