feat: enhance media management with EXIF data extraction, metadata filtering, and storage path generation

refactor: update configuration handling to use environment variables and improve code organization

libertas_api/src/extractors/query_options.rs

@@ -1,5 +1,5 @@
 use axum::{extract::{FromRequestParts, Query}, http::request::Parts};
-use libertas_core::{error::CoreError, schema::{FilterParams, ListMediaOptions, SortOrder, SortParams}};
+use libertas_core::{error::CoreError, schema::{FilterParams, ListMediaOptions, MetadataFilter, SortOrder, SortParams}};
 
 use crate::{error::ApiError, schema::ListMediaParams, state::AppState};
 
@@ -18,8 +18,25 @@ impl From<ListMediaParams> for ListMediaOptions {
             }
         });
 
+        let metadata_filters = if params.metadata.is_empty() {
+            None
+        } else {
+            Some(
+                params.metadata
+                .into_iter()
+                .filter_map(|s| {
+                    s.split_once(":").map(|(key, value)| MetadataFilter {
+                        tag_name: key.to_string(),
+                        tag_value: value.to_string(),
+                    })
+                })
+                .collect::<Vec<_>>()
+            )
+        };
+
         let filter = Some(FilterParams {
-            // e.g., mime_type: params.mime_type
+            mime_type: params.mime_type,
+            metadata_filters,
         });
 
         ListMediaOptions { sort, filter }