diff --git a/src/groupped_repport.rs b/src/groupped_repport.rs
index a57d110..9408415 100644
--- a/src/groupped_repport.rs
+++ b/src/groupped_repport.rs
@@ -1,3 +1,6 @@
+use std::fmt::Debug;
+
+use chrono::Datelike;
 use itertools::Itertools;
 use polars::prelude::*;
 use reqwest;
@@ -11,7 +14,7 @@ fn main() {
     let current_date = chrono::Local::now();
     let formatted_date = current_date.format("%Y-%m-%d").to_string();
 
-    std::fs::read_dir(std::path::Path::new("./evaluations")).expect("Failed to read directory ./evaluations")
+    let previous_week_folder_names = std::fs::read_dir(std::path::Path::new("./evaluations")).expect("Failed to read directory ./evaluations")
     .filter_map_ok(|entry| {
         if entry.metadata().unwrap().is_dir(){
             Some(entry.file_name())
@@ -28,22 +31,48 @@ fn main() {
 
         match matches_find {
             Some(found) => {
-                chrono::NaiveDateTime::parse_from_str()
-                return Some(String::from(found))
+                let date = chrono::NaiveDate::parse_from_str(found.as_str(), "%Y-%m-%d");
+                return Some((date.unwrap().week(chrono::Weekday::Sun), entry_string_name));
             },
             None => {return None;}
         };
     })
-    .for_each(|entry| println!("{:?}", entry));
-    // std::fs::ReadDir("./evaluations").for_each(|entry| println!("{:?}", entry));
-    
-    // get folder name for last week evaluations
-    /*
-    let evaluations_dir_walk = walkdir::WalkDir::new("./evaluations");
-    evaluations_dir_walk.into_iter().for_each(
-        |entry| {
-            println!("{:?}", entry.unwrap());
+    .filter_map_ok(|(week, directory_string)| {
+        let current_date = chrono::Local::now();
+        let first_day_of_current_week = current_date.date_naive().week(chrono::Weekday::Sun).first_day();
+        let current_date_minus_one_week = first_day_of_current_week.checked_sub_days(chrono::Days::new(1)).expect("Failed to subtract one day");
+        let first_day_of_last_week = current_date_minus_one_week.week(chrono::Weekday::Sun).first_day();
+        let first_day_of_week_in_folder_name = week.first_day();
+
+        if first_day_of_last_week == first_day_of_week_in_folder_name {
+            return Some(directory_string);
         }
-    )
-     */
+        return None;
+    })
+    .filter_map(|value| {
+        if value.is_ok() {return Some(value.unwrap());}
+        else {return None;}
+})
+    .sorted()
+    .collect_vec();
+
+    println!("{:?}", previous_week_folder_names);
+
+    // Read CSV files inside folder
+
+    // Use AI to sanitize the data
+
+    // Save into a hashmap, with the user name as key, the date, evaluation
+
+    // Final file should look like
+/*
+Header: Att1, att2, att3, ...
+categoria1
+categoria2
+categoria3
+...
+
+*/
+
+
 }
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