todo: exporter

crates/application/src/use_cases/export_diary.rs

@@ -0,0 +1,23 @@
+use std::sync::Arc;
+
+use domain::{
+    errors::DomainError,
+    ports::{DiaryExporter, MovieRepository},
+};
+
+use crate::commands::ExportCommand;
+
+pub struct ExportDiary {
+    repository: Arc<dyn MovieRepository>,
+    exporter: Arc<dyn DiaryExporter>,
+}
+
+impl ExportDiary {
+    pub async fn execute(&self, req: ExportCommand) -> Result<Vec<u8>, DomainError> {
+        // 1. fetch all diary entries for the user
+        // 2. delegate serialization to the port (exporter)
+
+        // Return bytes of the exported diary, which can be written to a file or returned in an HTTP response
+        Ok(vec![])
+    }
+}