Allow for excluding directories from Memories endpoint

src/state.rs

@@ -9,6 +9,7 @@ pub struct AppState {
     pub thumbnail_path: String,
     pub video_path: String,
     pub gif_path: String,
+    pub excluded_dirs: Vec<String>,
 }
 
 impl AppState {
@@ -18,6 +19,7 @@ impl AppState {
         thumbnail_path: String,
         video_path: String,
         gif_path: String,
+        excluded_dirs: Vec<String>,
     ) -> Self {
         let playlist_generator = PlaylistGenerator::new();
         let video_playlist_manager =
@@ -30,8 +32,19 @@ impl AppState {
             thumbnail_path,
             video_path,
             gif_path,
+            excluded_dirs,
         }
     }
+    
+    /// Parse excluded directories from environment variable
+    fn parse_excluded_dirs() -> Vec<String> {
+        env::var("EXCLUDED_DIRS")
+            .unwrap_or_default()
+            .split(',')
+            .filter(|dir| !dir.trim().is_empty())
+            .map(|dir| dir.trim().to_string())
+            .collect()
+    }
 }
 
 impl Default for AppState {
@@ -42,6 +55,7 @@ impl Default for AppState {
             env::var("THUMBNAILS").expect("THUMBNAILS was not set in the env"),
             env::var("VIDEO_PATH").expect("VIDEO_PATH was not set in the env"),
             env::var("GIFS_DIRECTORY").expect("GIFS_DIRECTORY was not set in the env"),
+            Self::parse_excluded_dirs(),
         )
     }
 }
@@ -67,6 +81,7 @@ impl AppState {
             thumbnail_path.to_string_lossy().to_string(),
             video_path.to_string_lossy().to_string(),
             gif_path.to_string_lossy().to_string(),
+            Vec::new(), // No excluded directories for test state
         )
     }
 }