WIP create a handler to download a file chunk by chunk.

backend/domain/src/video/error.rs

@@ -0,0 +1,6 @@
+pub enum VideoError {
+    VideoDoesNotExists,
+    FolderDoesNotExists,
+    FolderBrowsingTechnicalIssue,
+    FileReadingTechnicalIssue
+}

backend/domain/src/video/mod.rs

@@ -1 +1,3 @@
-pub mod model;
+pub mod error;
+pub mod model;
+pub mod port;

backend/domain/src/video/model.rs

@@ -1,3 +1,5 @@
+use uuid::Uuid;
+
 pub enum VideoFormat {
     AVI,
     MKV,
@@ -6,7 +8,11 @@ pub enum VideoFormat {
     UNKNOWN
 }
 
+pub trait VideoFile {}
+
 pub struct Video {
-    filename: String,
-    format: VideoFormat
+    pub id: Uuid,
+    pub filename: String,
+    pub file: Box<dyn VideoFile>,
+    pub format: VideoFormat,
 }

backend/domain/src/video/port.rs

@@ -0,0 +1,16 @@
+use uuid::Uuid;
+use crate::video::error::VideoError;
+use crate::video::model::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 get_video_stream(&self, video_id: Uuid) -> Result<Video, VideoError>;
+    fn clone_box(&self) -> Box<dyn VideoPort>;
+}
+
+impl Clone for Box<dyn VideoPort> {
+    fn clone(&self) -> Self {
+        self.clone_box()
+    }
+}