diff --git a/.gitignore b/.gitignore
index fcf9613..4220665 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,5 +3,6 @@
 backend/launcher/lumiere.sqlite
 backend/launcher/.env
 backend/launcher/certs
+backend/root_folder
 frontend/.angular
 frontend/node_modules
\ No newline at end of file
diff --git a/backend/application/src/video/service.rs b/backend/application/src/video/service.rs
index da68311..4ccebc9 100644
--- a/backend/application/src/video/service.rs
+++ b/backend/application/src/video/service.rs
@@ -4,6 +4,37 @@ use std::fs::File;
 use std::io::{BufRead, BufReader};
 use std::path::Path;
 use std::io::Read;
+use lumiere_domain::video::error::VideoError;
+use lumiere_domain::video::model::library_item::LibraryItem;
+use lumiere_domain::video::port::VideoPort;
+
+#[derive(Clone)]
+pub struct VideoService {
+    video_port: Box<dyn VideoPort>
+}
+
+impl VideoService {
+    pub fn new(video_port: Box<dyn VideoPort>) -> Self {
+        Self { video_port }
+    }
+
+    pub fn list_root_folder(self) -> Result<Vec<LibraryItem>, VideoError> {
+        let library_items = self.video_port.list_root_folder()?;
+
+        let items_without_id = library_items.iter().filter(|item| item.id == None);
+        // generate a new Uuid for each item without id
+        // assign this new Uuid to the item
+        // save the item by using the method video_port.save
+        // replace the items_without_id by modified items_without_id
+
+        Ok(vec!())
+    }
+}
+
+
+
+
+
 
 /// Basic example: Read file line by line using BufReader
 pub fn read_file_line_by_line(path: &str) -> std::io::Result<()> {
diff --git a/backend/domain/src/video/model/folder.rs b/backend/domain/src/video/model/folder.rs
new file mode 100644
index 0000000..5bc02e1
--- /dev/null
+++ b/backend/domain/src/video/model/folder.rs
@@ -0,0 +1,6 @@
+use uuid::Uuid;
+
+pub struct FolderItem {
+    pub id: Option<Uuid>,
+    pub name: String,
+}
\ No newline at end of file
diff --git a/backend/domain/src/video/model/library_item.rs b/backend/domain/src/video/model/library_item.rs
new file mode 100644
index 0000000..63f4ddb
--- /dev/null
+++ b/backend/domain/src/video/model/library_item.rs
@@ -0,0 +1,18 @@
+use uuid::Uuid;
+
+pub enum LibraryItemType {
+    VIDEO,
+    FOLDER
+}
+
+pub struct LibraryItem {
+    pub id: Uuid,
+    pub name: String,
+    pub r#type: LibraryItemType,
+}
+
+pub struct ReadLibraryItem {
+    pub id: Option<Uuid>,
+    pub name: String,
+    pub r#type: LibraryItemType,
+}
\ No newline at end of file
diff --git a/backend/domain/src/video/model/mod.rs b/backend/domain/src/video/model/mod.rs
new file mode 100644
index 0000000..8115f95
--- /dev/null
+++ b/backend/domain/src/video/model/mod.rs
@@ -0,0 +1,3 @@
+pub mod folder;
+pub mod library_item;
+pub mod video;
\ No newline at end of file
diff --git a/backend/domain/src/video/model.rs b/backend/domain/src/video/model/video.rs
similarity index 89%
rename from backend/domain/src/video/model.rs
rename to backend/domain/src/video/model/video.rs
index aaf4516..db2d5e2 100644
--- a/backend/domain/src/video/model.rs
+++ b/backend/domain/src/video/model/video.rs
@@ -12,7 +12,7 @@ pub trait VideoFile {}
 
 pub struct Video {
     pub id: Uuid,
-    pub filename: String,
+    pub name: String,
     pub file: Box<dyn VideoFile>,
     pub format: VideoFormat,
 }
\ No newline at end of file
diff --git a/backend/domain/src/video/port.rs b/backend/domain/src/video/port.rs
index 02b7550..d78bfcb 100644
--- a/backend/domain/src/video/port.rs
+++ b/backend/domain/src/video/port.rs
@@ -1,11 +1,13 @@
 use uuid::Uuid;
 use crate::video::error::VideoError;
-use crate::video::model::Video;
+use crate::video::model::library_item::{LibraryItem, ReadLibraryItem};
+use crate::video::model::video::Video;
 
 pub trait VideoPort: Send + Sync {
-    fn list_root(&self) -> Result<Vec<Video>, VideoError>;
-    fn list_folder(&self, folder_id: Uuid) -> Result<Vec<Video>, VideoError>;
+    fn list_root_folder(&self) -> Result<Vec<ReadLibraryItem>, VideoError>;
+    fn list_folder(&self, folder_id: Uuid) -> Result<Vec<ReadLibraryItem>, VideoError>;
     fn get_video_stream(&self, video_id: Uuid) -> Result<Video, VideoError>;
+    fn save(&self, library_item: LibraryItem) -> Result<(), VideoError>;
     fn clone_box(&self) -> Box<dyn VideoPort>;
 }
 
diff --git a/backend/exposition/src/lib.rs b/backend/exposition/src/lib.rs
index 652a638..16d77be 100644
--- a/backend/exposition/src/lib.rs
+++ b/backend/exposition/src/lib.rs
@@ -1,9 +1,7 @@
 extern crate core;
 
-use crate::user::validator::validator;
 use actix_web::web::ServiceConfig;
 use actix_web::{get, web, HttpResponse, Responder};
-use actix_web_httpauth::middleware::HttpAuthentication;
 use crate::video::handler::download_file;
 
 pub mod user;
diff --git a/backend/exposition/src/video/video_format_content_type_mapper.rs b/backend/exposition/src/video/video_format_content_type_mapper.rs
index 2d2ca28..386aff1 100644
--- a/backend/exposition/src/video/video_format_content_type_mapper.rs
+++ b/backend/exposition/src/video/video_format_content_type_mapper.rs
@@ -1,4 +1,4 @@
-use lumiere_domain::video::model::VideoFormat;
+use lumiere_domain::video::library_item::VideoFormat;
 
 pub fn map_to_content_type(video_format: &VideoFormat) -> &'static str {
     match video_format {
diff --git a/backend/infrastructure/src/video/video_format_detector.rs b/backend/infrastructure/src/video/video_format_detector.rs
index 417b5b7..2d9b9c4 100644
--- a/backend/infrastructure/src/video/video_format_detector.rs
+++ b/backend/infrastructure/src/video/video_format_detector.rs
@@ -1,7 +1,7 @@
 use std::fs::File;
 use std::path::Path;
-use lumiere_domain::video::model::VideoFormat;
-use lumiere_domain::video::model::VideoFormat::{AVI, MKV, MP4, UNKNOWN, WEBM};
+use lumiere_domain::video::library_item::VideoFormat;
+use lumiere_domain::video::library_item::VideoFormat::{AVI, MKV, MP4, UNKNOWN, WEBM};
 
 /// Determine Content-Type by reading file headers (magic numbers)
 pub fn get_content_type(path: &Path) -> VideoFormat {
diff --git a/backend/launcher/.env.example b/backend/launcher/.env.example
index 0b95465..d56b2b0 100644
--- a/backend/launcher/.env.example
+++ b/backend/launcher/.env.example
@@ -1,9 +1,4 @@
-HTTPS_ENABLED=false
 JWT_SECRET=jwt-secret
 SQLITE_DATABASE_NAME=lumiere.sqlite
 BCRYPT_SALT=salt
-SNAPSHOT_RESOURCES_CRON_FREQUENCY="*/5 * * * * *"
-SERVER_MODE=real # real | mocked
-#MOCKED_DAEMON_START_SUCCESS=true
-#MOCKED_DAEMON_STOP_SUCCESS=true
-#MOCKED_DAEMON_RESTART_SUCCESS=true
\ No newline at end of file
+ROOT_FOLDER=<replace-this-path>
\ No newline at end of file