application layer

Co-authored-by: Copilot <copilot@github.com>

crates/application/src/use_cases/get_diary.rs

@@ -0,0 +1,29 @@
+use domain::{
+    errors::DomainError,
+    models::{
+        DiaryEntry, DiaryFilter, SortDirection,
+        collections::{PageParams, Paginated},
+    },
+    value_objects::MovieId,
+};
+
+use crate::{context::AppContext, queries::GetDiaryQuery};
+
+pub async fn execute(
+    ctx: &AppContext,
+    query: GetDiaryQuery,
+) -> Result<Paginated<DiaryEntry>, DomainError> {
+    let page = PageParams::new(query.limit, query.offset)?;
+
+    let movie_id = query.movie_id.map(MovieId::from_uuid);
+
+    let filter = DiaryFilter {
+        sort_by: query.sort_by.unwrap_or(SortDirection::Descending),
+        page,
+        movie_id,
+    };
+
+    let paginated_results = ctx.repository.query_diary(&filter).await?;
+
+    Ok(paginated_results)
+}