application layer

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

crates/application/src/use_cases/get_review_history.rs

@@ -0,0 +1,23 @@
+use domain::{
+    errors::DomainError,
+    models::ReviewHistory,
+    services::review_history::{ReviewHistoryAnalyzer, Trend},
+    value_objects::MovieId,
+};
+
+use crate::{context::AppContext, queries::GetReviewHistoryQuery};
+
+pub async fn execute(
+    ctx: &AppContext,
+    query: GetReviewHistoryQuery,
+) -> Result<(ReviewHistory, Trend), DomainError> {
+    let movie_id = MovieId::from_uuid(query.movie_id);
+
+    let mut history = ctx.repository.get_review_history(&movie_id).await?;
+
+    let trend = ReviewHistoryAnalyzer::rating_trend(&history)?;
+
+    ReviewHistoryAnalyzer::sort_chronologically(&mut history);
+
+    Ok((history, trend))
+}