diff --git a/vibi-dpu/src/bitbucket/prs.rs b/vibi-dpu/src/bitbucket/prs.rs
index 7b1c0a89..1480d12a 100644
--- a/vibi-dpu/src/bitbucket/prs.rs
+++ b/vibi-dpu/src/bitbucket/prs.rs
@@ -2,7 +2,6 @@ use reqwest::header::HeaderMap;
 use serde_json::Value;
 use std::collections::HashMap;
 use std::str;
-use std::env;
 use crate::utils::pr_info::PrInfo;
 use crate::db::prs::save_pr_info_to_db;
 
@@ -72,7 +71,6 @@ async fn get_list_prs(headers: &HeaderMap, params: &HashMap<String, String>, rep
 pub async fn get_pr_info(workspace_slug: &str, repo_slug: &str, access_token: &str, pr_number: &str) -> Option<PrInfo> {
     let base_url = bitbucket_base_url();
     let url = format!("{}/repositories/{}/{}/pullrequests/{}", &base_url, workspace_slug, repo_slug, pr_number);
-
     let client = get_client();
     let response_result = client.get(&url)
         .header("Authorization", format!("Bearer {}", access_token))
@@ -87,7 +85,7 @@ pub async fn get_pr_info(workspace_slug: &str, repo_slug: &str, access_token: &s
     }
     let response = response_result.expect("Uncaught error in response");
     if !response.status().is_success() {
-        println!("Failed to get PR info, status: {:?}", response.status());
+        println!("Failed to get PR info, response: {:?}", response);
         return None;
     }
     let pr_data: Value = response.json().await.expect("Error parsing PR data");
diff --git a/vibi-dpu/src/core/review.rs b/vibi-dpu/src/core/review.rs
index bb544ad5..6ed6a07c 100644
--- a/vibi-dpu/src/core/review.rs
+++ b/vibi-dpu/src/core/review.rs
@@ -72,9 +72,11 @@ async fn process_review_changes(review: &Review) -> Option<HunkMap>{
 	}
 	let (_, smallfiles) = fileopt.expect("fileopt is empty");
 	let diffmap = generate_diff(&review, &smallfiles);
-	println!("diffmap = {:?}", &diffmap);
+	println!("[process_review_changes] diffmap = {:?}", &diffmap);
 	let linemap = process_diffmap(&diffmap);
+	println!("[process_review_changes] linemap = {:?}", &linemap);
 	let blamevec = generate_blame(&review, &linemap).await;
+	println!("[process_review_changes] blamevec = {:?}", &blamevec);
 	let hmapitem = PrHunkItem::new(
 		review.id().to_string(),
 		review.author().to_string(),
diff --git a/vibi-dpu/src/db/prs.rs b/vibi-dpu/src/db/prs.rs
index d1aea410..89b28ef3 100644
--- a/vibi-dpu/src/db/prs.rs
+++ b/vibi-dpu/src/db/prs.rs
@@ -1,3 +1,4 @@
+use serde_json::Value;
 use sled::IVec;
 use std::error::Error;
 use crate::db::config::get_db;
@@ -27,7 +28,7 @@ pub async fn save_pr_info_to_db(workspace_slug: &str,repo_slug: &str,pr_info: Pr
 }
 
 
-pub async fn update_pr_info_in_db(workspace_slug: &str, repo_slug: &str, pr_info: PrInfo, pr_number: &str) {
+pub async fn update_pr_info_in_db(workspace_slug: &str, repo_slug: &str, pr_info: &PrInfo, pr_number: &str) {
     let key = format!("{}/{}/{}/{}", "bitbucket", workspace_slug, repo_slug, pr_number);
     let db = get_db();
 
@@ -51,4 +52,75 @@ pub async fn update_pr_info_in_db(workspace_slug: &str, repo_slug: &str, pr_info
     }
 
     println!("PR info updated successfully in the database. {:?} {:?}", key, pr_info);
+}
+
+pub async fn process_and_update_pr_if_different(webhook_data: &Value, workspace_slug: &str, repo_slug: &str, pr_number: &str, repo_provider: &str) -> bool {
+    println!("[process_and_update_pr_if_different] {:?}, {:?}, {:?}, {:?}", workspace_slug, repo_slug, pr_number, repo_provider);
+    let pr_info_parsed_opt = parse_webhook_data(webhook_data);
+    if pr_info_parsed_opt.is_none() {
+        eprintln!("[process_and_update_pr_if_different] Unable to parse webhook data");
+        return false;
+    }
+    let pr_info_parsed = pr_info_parsed_opt.expect("Empty pr_info_parsed_opt");
+    // Retrieve the existing pr_head_commit from the database
+    let pr_info_db_opt = get_pr_info_from_db(workspace_slug, repo_slug, pr_number, repo_provider, &pr_info_parsed).await;
+    if pr_info_db_opt.is_none() {
+        eprintln!("[process_and_update_pr_if_different] No pr_info in db, parsed: {:?}", pr_info_parsed);
+        return false;
+    }
+    let pr_info_db = pr_info_db_opt.expect("Empty pr_info_db_opt");
+    if pr_info_db.pr_head_commit().to_string().eq_ignore_ascii_case(pr_info_parsed.pr_head_commit()){
+        return false; // commits are the same
+    } else {
+        update_pr_info_in_db(&workspace_slug, &repo_slug, &pr_info_parsed, &pr_number).await;
+        return true; // commits are different, and PR info should be updated
+    }
+}
+
+fn parse_webhook_data(webhook_data: &Value) -> Option<PrInfo> {
+    println!("[parse_webhook_data] webhook_data: {:?}", &webhook_data);
+    let pr_head_commit_raw = webhook_data["pullrequest"]["source"]["commit"]["hash"].to_string();
+    let pr_head_commit = pr_head_commit_raw.trim_matches('"');
+    let base_head_commit_raw = webhook_data["pullrequest"]["destination"]["commit"]["hash"].to_string();
+    let base_head_commit = base_head_commit_raw.trim_matches('"');
+    let pr_state_raw = webhook_data["pullrequest"]["state"].to_string();
+    let pr_state = pr_state_raw.trim_matches('"');
+    let pr_branch_raw = webhook_data["pullrequest"]["source"]["branch"]["name"].to_string();
+    let pr_branch = pr_branch_raw.trim_matches('"');
+    let pr_info = PrInfo { base_head_commit: base_head_commit.to_string(),
+        pr_head_commit: pr_head_commit.to_string(),
+        state: pr_state.to_string(),
+        pr_branch: pr_branch.to_string()
+    };
+    println!("[parse_webhook_data] pr_info :{:?}", &pr_info);
+    return Some(pr_info);
+}
+
+pub async fn get_pr_info_from_db(workspace_slug: &str, repo_slug: &str, pr_number: &str, repo_provider: &str, pr_info_parsed: &PrInfo) -> Option<PrInfo> {
+    let db = get_db();
+    let db_pr_key = format!("{}/{}/{}/{}", repo_provider, workspace_slug, repo_slug, pr_number);
+    let pr_info_res = db.get(IVec::from(db_pr_key.as_bytes()));
+
+    if pr_info_res.is_err() {
+        let e = pr_info_res.expect_err("No error in pr_info_res");
+        eprintln!("Unable to get bb pr info from db: {:?}", e);
+        return None;
+    };
+
+    let pr_info_opt = pr_info_res.expect("Uncaught error in pr_info res");
+    if pr_info_opt.is_none() {
+        eprintln!("No bitbucket pr info in db");
+        update_pr_info_in_db(&workspace_slug, &repo_slug, pr_info_parsed, &pr_number).await;
+        return None; //If no info in db then it will be considered as new commit
+    }
+
+    let pr_info_ivec = pr_info_opt.expect("Empty pr_info_opt");
+    let pr_info_parse = serde_json::from_slice(&pr_info_ivec);
+    if pr_info_parse.is_err() {
+        let e = pr_info_parse.expect_err("No error in pr_info_parse");
+        eprintln!("Unable to deserialize pr_Info: {:?}", e);
+        return None;
+    }
+    let pr_info: PrInfo = pr_info_parse.expect("Failed to deserialize PR info");
+    return Some(pr_info);
 }
\ No newline at end of file
diff --git a/vibi-dpu/src/pubsub/listener.rs b/vibi-dpu/src/pubsub/listener.rs
index ee4cbfed..618b0ea4 100644
--- a/vibi-dpu/src/pubsub/listener.rs
+++ b/vibi-dpu/src/pubsub/listener.rs
@@ -1,5 +1,4 @@
 use std::collections::HashMap;
-
 use futures_util::StreamExt;
 use google_cloud_auth::credentials::CredentialsFile;
 use google_cloud_default::WithAuthExt;
@@ -8,10 +7,12 @@ use google_cloud_pubsub::{
     subscription::{SubscriptionConfig, Subscription},
 };
 use serde::Deserialize;
+use serde_json::Value;
 use tokio::task;
 use std::collections::VecDeque;
 use sha256::digest;
 use tonic::Code;
+use crate::{db::prs::process_and_update_pr_if_different, utils::user::ProviderEnum};
 use crate::core::{setup::handle_install_bitbucket, review::process_review};
 
 #[derive(Debug, Deserialize)]
@@ -45,17 +46,58 @@ async fn process_message(attributes: &HashMap<String, String>, data_bytes: &Vec<
         },
         "webhook_callback" => {
             let data_bytes_async = data_bytes.to_owned();
-            task::spawn(async move {
-                process_review(&data_bytes_async).await;
-                println!("Processed webhook callback message");
-            });
+            let deserialized_data_opt = deserialized_data(&data_bytes_async);
+            let deserialised_msg_data = deserialized_data_opt.expect("Failed to deserialize data");
+            
+            let repo_provider = deserialised_msg_data["repositoryProvider"].to_string().trim_matches('"').to_string();
+            let workspace_slug = deserialised_msg_data["eventPayload"]["repository"]["workspace"]["slug"].to_string().trim_matches('"').to_string();
+            let repo_slug = deserialised_msg_data["eventPayload"]["repository"]["name"].to_string().trim_matches('"').to_string();
+            let pr_number = deserialised_msg_data["eventPayload"]["pullrequest"]["id"].to_string().trim_matches('"').to_string();
+            let event_type = deserialised_msg_data["eventType"].to_string().trim_matches('"').to_string();
+            let mut is_reviewable = false;
+            
+            if event_type == "pullrequest:updated" {
+                is_reviewable = process_and_update_pr_if_different(&deserialised_msg_data["eventPayload"], &workspace_slug, &repo_slug, &pr_number, &repo_provider).await;
+            }
+            if is_reviewable || event_type == "pullrequest:created" || event_type == "pullrequest:approved" {
+                task::spawn(async move {
+                    process_review(&data_bytes_async).await;
+                    println!("Processed webhook callback message");
+                });
+            }
         }
-        _ => {
+        _=> {
             eprintln!("Message type not found for message : {:?}", attributes);
         }
     };
 }
 
+
+async fn prcoess_install_callback(data_bytes: &[u8]) {
+    println!("Processing install callback message");
+    let msg_data_res =  serde_json::from_slice::<InstallCallback>(data_bytes);
+    if msg_data_res.is_err() {
+        eprintln!("Error deserializing install callback: {:?}", msg_data_res);
+        return;
+    }
+    let data = msg_data_res.expect("msg_data not found");
+    if data.repository_provider == ProviderEnum::Github.to_string().to_lowercase() {
+        println!("To be Implemented");
+        // let code_async = data.installation_code.clone();
+        // task::spawn(async move {
+        //     handle_install_github(&code_async).await;
+        //     println!("Processed install callback message");
+        // });
+    }
+    if data.repository_provider == ProviderEnum::Bitbucket.to_string().to_lowercase() {
+        let code_async = data.installation_code.clone();
+        task::spawn(async move {
+            handle_install_bitbucket(&code_async).await;
+            println!("Processed install callback message");
+        });
+    }
+}
+
 pub async fn get_pubsub_client_config(keypath: &str) -> ClientConfig {
     let credfile = CredentialsFile::new_from_file(keypath.to_string()).await
         .expect("Failed to locate credentials file");
@@ -123,4 +165,16 @@ pub async fn listen_messages(keypath: &str, topicname: &str) {
         // Ack or Nack message.
         let _ = message.ack().await;
     }
+}
+
+pub fn deserialized_data(message_data: &Vec<u8>) -> Option<Value> {
+    let msg_data_res = serde_json::from_slice::<Value>(message_data);
+    if msg_data_res.is_err() {
+		let e = msg_data_res.expect_err("No error in data_res");
+		eprintln!("Incoming message does not contain valid reviews: {:?}", e);
+		return None;
+	}
+	let deserialized_data = msg_data_res.expect("Uncaught error in deserializing message_data");
+	println!("deserialized_data == {:?}", &deserialized_data["eventPayload"]["repository"]);
+    Some(deserialized_data)
 }
\ No newline at end of file
diff --git a/vibi-dpu/src/utils/pr_info.rs b/vibi-dpu/src/utils/pr_info.rs
index 09bf9f00..38e02422 100644
--- a/vibi-dpu/src/utils/pr_info.rs
+++ b/vibi-dpu/src/utils/pr_info.rs
@@ -1,5 +1,4 @@
 use serde::{Deserialize, Serialize};
-use std::fmt;
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct PrInfo {