feat: Update configuration handling and add debug logging for thumbnail processing

libertas_core/src/config.rs

@@ -2,27 +2,28 @@ use serde::Deserialize;
 
 use crate::error::{CoreError, CoreResult};
 
-#[derive(Deserialize, Clone)]
+#[derive(Deserialize, Clone, Debug)]
 #[serde(rename_all = "lowercase")]
 pub enum DatabaseType {
     Postgres,
     Sqlite,
 }
 
-#[derive(Deserialize, Clone)]
+#[derive(Deserialize, Clone, Debug)]
 pub struct DatabaseConfig {
     pub db_type: DatabaseType,
     pub url: String,
 }
 
-#[derive(Deserialize, Clone)]
+
+#[derive(Deserialize, Clone, Debug)]
 #[serde(rename_all = "lowercase")]
 pub enum ThumbnailFormat {
     Jpeg,
     Webp,
 }
 
-#[derive(Deserialize, Clone)]
+#[derive(Deserialize, Clone, Debug)]
 pub struct ThumbnailConfig {
     pub format: ThumbnailFormat,
     pub quality: u8,
@@ -31,7 +32,7 @@ pub struct ThumbnailConfig {
     pub library_path: String,
 }
 
-#[derive(Deserialize, Clone)]
+#[derive(Deserialize, Clone, Debug)]
 pub struct Config {
     pub database_url: String,
     pub database_db_type: DatabaseType,
@@ -49,7 +50,6 @@ pub struct Config {
     #[serde(default = "default_allowed_sort_columns")]
     pub allowed_sort_columns: Vec<String>,
 
-    #[serde(flatten)]
     pub thumbnail_config: Option<ThumbnailConfig>,
 }
 
@@ -59,7 +59,7 @@ fn default_allowed_sort_columns() -> Vec<String> {
     vec!["created_at".to_string(), "original_filename".to_string()]
 }
 
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 pub struct AppConfig {
     pub database: DatabaseConfig,
     pub server_address: String,
@@ -73,14 +73,25 @@ pub struct AppConfig {
 }
 
 pub fn load_config() -> CoreResult<AppConfig> {
-    // Load the .env file at that specific path
-   let env_path = dotenvy::dotenv()
+    let env_path = dotenvy::dotenv()
         .map_err(|e| CoreError::Config(format!("Failed to load .env file: {}", e)))?;
-
     println!("Loaded config from {}", env_path.display());
 
-    let config = envy::from_env::<Config>()
-        .map_err(|e| CoreError::Config(format!("Failed to load config from env: {}", e)))?;
+    let config = config::Config::builder()
+        .add_source(config::Environment::default()
+        .with_list_parse_key("allowed_sort_columns")
+        .list_separator(",")
+        .try_parsing(true)
+        .separator("__")
+    )
+        .build()
+        .map_err(|e| CoreError::Config(format!("Failed to build config: {}", e)))?;
+    
+    let config: Config = config
+        .try_deserialize()
+        .map_err(|e| CoreError::Config(format!("Failed to deserialize config: {}", e)))?;
+    println!("Built config from environment variables. Contents: {:?}", config);
+
 
     Ok(AppConfig {
         database: DatabaseConfig {