diff --git a/devprofiler/src/bitbucket/auth.rs b/devprofiler/src/bitbucket/auth.rs
index 8325761..28db007 100644
--- a/devprofiler/src/bitbucket/auth.rs
+++ b/devprofiler/src/bitbucket/auth.rs
@@ -62,7 +62,7 @@ pub async fn refresh_git_auth(clone_url: &str, directory: &str) -> String{
     return access_token;
 }
 
-async fn update_access_token(auth_info: &AuthInfo) -> Option<AuthInfo> {
+pub async fn update_access_token(auth_info: &AuthInfo) -> Option<AuthInfo> {
 
     let now = SystemTime::now();
     let now_secs = now.duration_since(UNIX_EPOCH).expect("Time went backwards").as_secs();
diff --git a/devprofiler/src/bitbucket/comment.rs b/devprofiler/src/bitbucket/comment.rs
new file mode 100644
index 0000000..1b05596
--- /dev/null
+++ b/devprofiler/src/bitbucket/comment.rs
@@ -0,0 +1,84 @@
+use std::{env, collections::HashMap};
+
+use reqwest::{Response, header::{HeaderMap, HeaderValue}};
+use serde::Serialize;
+use serde_json::Value;
+
+use crate::db::auth::auth_info;
+
+use super::{config::bitbucket_base_url, auth::update_access_token};
+
+#[derive(Serialize)]
+struct Comment {
+    content: Content,
+}
+
+#[derive(Serialize)]
+struct Content {
+    raw: String,
+}
+pub async fn add_comment(workspace_name: &str, repo_name: &str, review_id: &str, comment_text: &str) {
+    let url = format!("{}/repositories/{workspace_name}/{repo_name}/pullrequests/{review_id}/comments", bitbucket_base_url());
+    println!("comment url = {}", &url);
+    let auth_info = auth_info();
+    let mut access_token = auth_info.access_token().clone();
+    let new_auth_opt = update_access_token(&auth_info).await;
+    if new_auth_opt.is_some() {
+        let new_auth = new_auth_opt.expect("new_auth_opt is empty");
+        access_token = new_auth.access_token().clone();
+    }
+    let comment_payload = Comment {
+        content: Content {
+            raw: comment_text.to_string(),
+        },
+    };
+    let client = reqwest::Client::new();
+    let mut headers = reqwest::header::HeaderMap::new(); 
+    headers.insert( reqwest::header::AUTHORIZATION, 
+    format!("Bearer {}", access_token).parse().expect("Invalid auth header"), );
+    headers.insert("Accept",
+     "application/json".parse().expect("Invalid Accept header"));
+    let response_res = client.post(&url).
+        headers(headers).json(&comment_payload).send().await;
+    if response_res.is_err() {
+        eprintln!("Error in post request for adding comment - {:?}", response_res.as_ref().expect_err("response has no error"));
+    }
+    let response = response_res.expect("Error in getting response");
+    if response.status().is_success() {
+        eprintln!("Failed to call API {}, status: {}", url, response.status());
+    }
+    let response_json = response.json::<Value>().await;
+    println!("response from comment api = {:?}", &response_json);
+}
+
+pub async fn add_reviewers(repo_owner: &str, repo_name: &str, user_id: &str) {
+    let url = format!("{}/repositories/{repo_owner}/{repo_name}/default-reviewers/{user_id}", bitbucket_base_url());
+    println!("auto assign url = {}", &url);
+    let auth_info = auth_info();
+    let mut access_token = auth_info.access_token().clone();
+    let new_auth_opt = update_access_token(&auth_info).await;
+    if new_auth_opt.is_some() {
+        let new_auth = new_auth_opt.expect("new_auth_opt is empty");
+        access_token = new_auth.access_token().clone();
+    }
+    let client = reqwest::Client::new();
+    let mut headers = reqwest::header::HeaderMap::new(); 
+    headers.insert( reqwest::header::AUTHORIZATION, 
+    format!("Bearer {}", access_token).parse().expect("Invalid auth header"), );
+    headers.insert("Accept",
+     "application/json".parse().expect("Invalid Accept header"));
+    let response_res = client
+        .put(&url)
+        .bearer_auth(access_token) // Use Bearer authentication with your personal access token
+        .header("Accept", "application/json")
+        .send().await;
+    if response_res.is_err() {
+        eprintln!("Error in post request for auto assign - {:?}", response_res.as_ref().expect_err("response has no error"));
+    }
+    let response = response_res.expect("Error in getting response");
+    if response.status().is_success() {
+        eprintln!("Failed to call API {}, status: {}", url, response.status());
+    }
+    let response_json = response.json::<Value>().await;
+    println!("response from auto assign api = {:?}", &response_json);
+}
\ No newline at end of file
diff --git a/devprofiler/src/bitbucket/config.rs b/devprofiler/src/bitbucket/config.rs
index 7a49b98..8c48751 100644
--- a/devprofiler/src/bitbucket/config.rs
+++ b/devprofiler/src/bitbucket/config.rs
@@ -9,6 +9,7 @@ pub fn bitbucket_base_url() -> String {
 
 pub async fn get_api(url: &str, access_token: &str, params: Option<HashMap<&str, &str>> ) -> Vec<Value> {
     let response_opt = call_get_api(url, access_token, &params).await;
+    println!("response of get_api = {:?}", &response_opt);
     let (mut response_values, next_url) = deserialize_response(response_opt).await;
     if next_url.is_some() {
         let mut page_values = get_all_pages(next_url, access_token, &params).await;
@@ -17,7 +18,7 @@ pub async fn get_api(url: &str, access_token: &str, params: Option<HashMap<&str,
     return response_values;
 }
 
-async fn call_get_api(url: &str, access_token: &str, params: &Option<HashMap<&str, &str>> ) -> Option<Response>{
+pub async fn call_get_api(url: &str, access_token: &str, params: &Option<HashMap<&str, &str>> ) -> Option<Response>{
     println!("GET api url = {}", url);
     let client = reqwest::Client::new();
     let mut headers = reqwest::header::HeaderMap::new(); 
diff --git a/devprofiler/src/bitbucket/mod.rs b/devprofiler/src/bitbucket/mod.rs
index f0db7d0..6772197 100644
--- a/devprofiler/src/bitbucket/mod.rs
+++ b/devprofiler/src/bitbucket/mod.rs
@@ -3,4 +3,5 @@ pub mod workspace;
 pub mod repo;
 mod config;
 pub mod webhook;
-pub mod user;
\ No newline at end of file
+pub mod user;
+pub mod comment;
\ No newline at end of file
diff --git a/devprofiler/src/bitbucket/user.rs b/devprofiler/src/bitbucket/user.rs
index 6a9d8f1..5381c4a 100644
--- a/devprofiler/src/bitbucket/user.rs
+++ b/devprofiler/src/bitbucket/user.rs
@@ -1,8 +1,10 @@
+use chrono::{DateTime, Utc, FixedOffset};
 use crate::db::auth::auth_info;
-use crate::db::user::save_user_to_db;
+use crate::db::user::{save_user_to_db, user_from_db};
 use crate::utils::auth::AuthInfo;
+use crate::utils::lineitem::LineItem;
 use crate::utils::user::{User, Provider, ProviderEnum};
-use super::config::{bitbucket_base_url, get_api};
+use super::config::{bitbucket_base_url, get_api, call_get_api};
 
 pub async fn get_and_save_workspace_users(workspace_id: &str, access_token: &str) {
     let base_url = bitbucket_base_url();
@@ -21,12 +23,36 @@ pub async fn get_and_save_workspace_users(workspace_id: &str, access_token: &str
     }
 }
 
-pub async fn get_commit_bb(commit: &str, repo_name: &str, repo_owner: &str) {
+pub async fn get_commit_bb(commit: &str, repo_name: &str, repo_owner: &str) -> LineItem{
     let base_url = bitbucket_base_url();
     let commits_url = format!("{}/repositories/{repo_owner}/{repo_name}/commit/{commit}", &base_url);
     println!("commits url = {}", &commits_url);
     let authinfo: AuthInfo =  auth_info();
     let access_token = authinfo.access_token();
-    let response_json = get_api(&commits_url, access_token, None).await;
-    println!("response json for commits url = {:?}", &response_json);
+    let response = call_get_api(&commits_url, access_token, &None).await;
+    let response_json = response.expect("No response").json::<serde_json::Value>().await.expect("Error in deserializing json");
+    let timestamp_str = &response_json["date"].to_string().replace('"', "");
+    println!("timestamp_str = {}", timestamp_str);
+    // Explicitly specify the format
+    let datetime: DateTime<FixedOffset> = DateTime::parse_from_rfc3339(&timestamp_str)
+        .expect("Failed to parse timestamp");
+
+    // Convert to Utc
+    let datetime_utc = datetime.with_timezone(&Utc);
+
+    let unix_timestamp = datetime_utc.timestamp();
+    let unix_timestamp_str = unix_timestamp.to_string();
+    let author_id = response_json["author"]["user"]["uuid"].to_string().replace('"', "");
+    let author_name = response_json["author"]["user"]["display_name"].to_string().replace('"', "");
+    let user_opt = user_from_db(
+        &ProviderEnum::Bitbucket.to_string(), 
+        repo_owner, &author_id);
+    if user_opt.is_none() {
+        let user = User::new(
+            Provider::new(author_id.clone(), 
+            ProviderEnum::Bitbucket), 
+            author_name, repo_owner.to_string(), None);
+        save_user_to_db(&user);
+    }
+    return LineItem::new(author_id, unix_timestamp_str);
 }
\ No newline at end of file
diff --git a/devprofiler/src/core/coverage.rs b/devprofiler/src/core/coverage.rs
index 27807c2..b9d9639 100644
--- a/devprofiler/src/core/coverage.rs
+++ b/devprofiler/src/core/coverage.rs
@@ -1,7 +1,82 @@
-use crate::utils::hunk::HunkMap;
+use std::collections::HashMap;
+
+use crate::{utils::hunk::{HunkMap, PrHunkItem}, db::user::user_from_db, bitbucket::comment::{add_comment, add_reviewers}};
 
 pub async fn process_coverage(hunkmap: &HunkMap) {
-    // get current reviewers
-    // calculate coverage
-    
-}
\ No newline at end of file
+    for prhunk in hunkmap.prhunkvec() {
+        // calculate number of hunks for each userid
+        let coverage_map = calculate_coverage(&hunkmap.repo_owner(), prhunk);
+        if !coverage_map.is_empty() {
+            // get user for each user id
+            // create comment text
+            let comment = comment_text(coverage_map);
+            // add comment
+            add_comment(&hunkmap.repo_owner(), 
+                &hunkmap.repo_name(), 
+                prhunk.pr_number(), 
+                &comment).await;
+            // add reviewers
+            for blame in prhunk.blamevec() {
+                let author_id = blame.author();
+                add_reviewers(&hunkmap.repo_owner(), 
+                    &hunkmap.repo_name(),
+            &author_id).await;
+            }
+            // TODO - implement settings
+        }    
+    }
+}
+
+fn calculate_coverage(repo_owner: &str, prhunk: &PrHunkItem) -> HashMap<String, String>{
+    let mut coverage_map = HashMap::<String, String>::new();
+    let mut coverage_floatmap = HashMap::<String, f32>::new();
+    let mut total = 0.0;
+    for blame in prhunk.blamevec() {
+        let author_id = blame.author().to_owned();
+        let num_lines: f32 = blame.line_end().parse::<f32>().expect("lines_end invalid float")
+            - blame.line_start().parse::<f32>().expect("lines_end invalid float")
+            + 1.0;
+        total += num_lines;
+        if coverage_floatmap.contains_key(&author_id) {
+            let coverage = coverage_floatmap.get(&author_id).expect("unable to find coverage for author")
+                + num_lines;
+            coverage_floatmap.insert(author_id, coverage);
+        }
+        else {
+            coverage_floatmap.insert(author_id, num_lines);
+        }
+    }
+    if total <= 0.0 {
+        return coverage_map;
+    } 
+    for (key, value) in coverage_floatmap.iter_mut() {
+        *value = *value / total * 100.0;
+        let formatted_value = format!("{:.2}", *value);
+        let user = user_from_db("bitbucket", repo_owner, key);
+        if user.is_none() {
+            eprintln!("No user name found for {}", key);
+            coverage_map.insert(key.to_string(), formatted_value);
+            continue;
+        }
+        let user_val = user.expect("user is empty");
+        let coverage_key = user_val.name();
+        coverage_map.insert(coverage_key.to_string(), formatted_value);
+    }
+    return coverage_map;
+}
+
+fn comment_text(coverage_map: HashMap<String, String>) -> String {
+    let mut comment = "Relevant users for this PR:\n\n".to_string();  // Added two newlines
+    comment += "| Contributor Name/Alias  | Code Coverage |\n";  // Added a newline at the end
+    comment += "| -------------- | --------------- |\n";  // Added a newline at the end
+
+    for (key, value) in coverage_map.iter() {
+        comment += &format!("| {} | {}% |\n", key, value);  // Added a newline at the end
+    }
+
+    comment += "\n\n";
+    comment += "Code coverage is calculated based on the git blame information of the PR. To know more, hit us up at contact@vibinex.com.\n\n";  // Added two newlines
+    comment += "To change comment and auto-assign settings, go to [your Vibinex settings page.](https://vibinex.com/settings)\n";  // Added a newline at the end
+
+    return comment;
+}
diff --git a/devprofiler/src/db/user.rs b/devprofiler/src/db/user.rs
index 4c8cf04..ba21956 100644
--- a/devprofiler/src/db/user.rs
+++ b/devprofiler/src/db/user.rs
@@ -16,3 +16,17 @@ pub fn save_user_to_db(user: &User) {
     // Insert JSON into sled DB
     db.insert(IVec::from(user_key.as_bytes()), json).expect("Failed to upsert user into sled DB");
 }
+
+pub fn user_from_db(repo_provider: &str, workspace: &str, user_id: &str, ) -> Option<User> {
+	let db = get_db();
+	let user_key = format!("{}/{}/{}", 
+        repo_provider, workspace, user_id);
+	let user_opt = db.get(IVec::from(user_key.as_bytes())).expect("Unable to get repo from db");
+    if user_opt.is_none() {
+        return None;
+    }
+	let user_ivec = user_opt.expect("Empty value");
+	let user: User = serde_json::from_slice::<User>(&user_ivec).unwrap();
+	println!("user from db = {:?}", &user);
+	return Some(user);
+}
\ No newline at end of file
diff --git a/devprofiler/src/utils/gitops.rs b/devprofiler/src/utils/gitops.rs
index c57c2e2..d535892 100644
--- a/devprofiler/src/utils/gitops.rs
+++ b/devprofiler/src/utils/gitops.rs
@@ -1,5 +1,4 @@
 use std::collections::HashMap;
-use std::error::Error;
 use std::process::Command;
 use std::str;
 use serde::Deserialize;
@@ -11,6 +10,7 @@ use crate::bitbucket::user::get_commit_bb;
 
 use super::hunk::BlameItem;
 use super::review::Review;
+use super::lineitem::LineItem;
 
 #[derive(Debug, Serialize, Default, Deserialize)]
 pub struct StatItem {
@@ -268,13 +268,13 @@ pub async fn generate_blame(review: &Review, linemap: &HashMap<String, Vec<Strin
 							for lidx in linenumint..(linenumint + blamelines.len()-1) {
 								if lineauthormap.contains_key(&lidx) && lineauthormap.contains_key(&(lidx+1)) {
 									let lineitem = lineauthormap.get(&lidx).expect("lidx checked");
-									if lineitem.author == 
-									lineauthormap.get(&(lidx+1)).expect("lidx+1 checked").author {
+									if lineitem.author_id() == 
+									lineauthormap.get(&(lidx+1)).expect("lidx+1 checked").author_id() {
 										continue;
 									}
 									else {
 										blamevec.push(BlameItem::new(
-											lineitem.author().to_string(),
+											lineitem.author_id().to_string(),
 											lineitem.timestamp().to_string(),
 											linebreak.to_string(),
 											lidx.to_string(),
@@ -287,7 +287,7 @@ pub async fn generate_blame(review: &Review, linemap: &HashMap<String, Vec<Strin
 							if lineauthormap.contains_key(&lastidx) {
 								let lineitem = lineauthormap.get(&lastidx).expect("lastidx checked");
 								blamevec.push(BlameItem::new(
-									lineitem.author().to_string(),
+									lineitem.author_id().to_string(),
 									lineitem.timestamp().to_string(),
 									linebreak.to_string(),
 									lastidx.to_string(),
@@ -308,21 +308,6 @@ pub async fn generate_blame(review: &Review, linemap: &HashMap<String, Vec<Strin
 	return blamevec;
 }
 
-struct LineItem {
-    author: String,
-    timestamp: String,
-}
-
-impl LineItem {
-    fn author(&self) -> &String {
-        &self.author
-    }
-
-    fn timestamp(&self) -> &String {
-        &self.timestamp
-    }
-}
-
 async fn process_blamelines(blamelines: &Vec<&str>, linenum: usize,
     repo_name: &str, repo_owner: &str) -> HashMap<usize, LineItem> {
 	let mut linemap = HashMap::<usize, LineItem>::new();
@@ -331,32 +316,9 @@ async fn process_blamelines(blamelines: &Vec<&str>, linenum: usize,
 		let wordvec: Vec<&str> = ln.split(" ").collect();
         let commit = wordvec[0];
         let lineitem = get_commit_bb(commit, repo_name, repo_owner).await;
-		let mut author = wordvec[1];
-		let mut timestamp = wordvec[2];
-		let mut idx = 1;
-		if author == "" {
-			while idx < wordvec.len() && wordvec[idx] == "" {
-				idx = idx + 1;
-			}
-			if idx < wordvec.len() {
-				author = wordvec[idx];
-			}
-		}
-		let authorstr = author.replace("(", "")
-			.replace("<", "")
-			.replace(">", "");
-		if timestamp == "" {
-			idx = idx + 1;
-			while idx < wordvec.len() && wordvec[idx] == "" {
-				idx = idx + 1;
-			}
-			if idx < wordvec.len() {
-				timestamp = wordvec[idx];
-			}
-		}
 		linemap.insert(
 			linenum + lnum,
-			LineItem { author: authorstr.to_string(), timestamp: timestamp.to_string() }
+			lineitem
 		);
 	}
 	return linemap;
diff --git a/devprofiler/src/utils/lineitem.rs b/devprofiler/src/utils/lineitem.rs
new file mode 100644
index 0000000..52be0fc
--- /dev/null
+++ b/devprofiler/src/utils/lineitem.rs
@@ -0,0 +1,22 @@
+#[derive(Debug, Clone)]
+pub struct LineItem {
+    author_id: String,
+    timestamp: String,
+}
+
+impl LineItem {
+    pub fn new(author_id: String, timestamp: String) -> Self {
+        Self {
+            author_id,
+            timestamp
+        }
+    }
+
+    pub fn author_id(&self) -> &String {
+        &self.author_id
+    }
+
+    pub fn timestamp(&self) -> &String {
+        &self.timestamp
+    }
+}
\ No newline at end of file
diff --git a/devprofiler/src/utils/mod.rs b/devprofiler/src/utils/mod.rs
index 3532717..0afbdf8 100644
--- a/devprofiler/src/utils/mod.rs
+++ b/devprofiler/src/utils/mod.rs
@@ -5,4 +5,5 @@ pub mod webhook;
 pub mod hunk;
 pub mod review;
 pub mod gitops;
-pub mod user;
\ No newline at end of file
+pub mod user;
+pub mod lineitem;
\ No newline at end of file