feat: implement transcode settings repository and integrate with local-files provider

k-tv-backend/infra/src/transcode_settings_repository/mod.rs

@@ -0,0 +1,4 @@
+#[cfg(feature = "sqlite")]
+mod sqlite;
+#[cfg(feature = "sqlite")]
+pub use sqlite::SqliteTranscodeSettingsRepository;

k-tv-backend/infra/src/transcode_settings_repository/sqlite.rs

@@ -0,0 +1,34 @@
+use async_trait::async_trait;
+use domain::{DomainError, DomainResult, TranscodeSettingsRepository};
+use sqlx::SqlitePool;
+
+pub struct SqliteTranscodeSettingsRepository {
+    pool: SqlitePool,
+}
+
+impl SqliteTranscodeSettingsRepository {
+    pub fn new(pool: SqlitePool) -> Self {
+        Self { pool }
+    }
+}
+
+#[async_trait]
+impl TranscodeSettingsRepository for SqliteTranscodeSettingsRepository {
+    async fn load_cleanup_ttl(&self) -> DomainResult<Option<u32>> {
+        let row: Option<(i64,)> =
+            sqlx::query_as("SELECT cleanup_ttl_hours FROM transcode_settings WHERE id = 1")
+                .fetch_optional(&self.pool)
+                .await
+                .map_err(|e| DomainError::InfrastructureError(e.to_string()))?;
+        Ok(row.map(|(h,)| h as u32))
+    }
+
+    async fn save_cleanup_ttl(&self, hours: u32) -> DomainResult<()> {
+        sqlx::query("UPDATE transcode_settings SET cleanup_ttl_hours = ? WHERE id = 1")
+            .bind(hours as i64)
+            .execute(&self.pool)
+            .await
+            .map_err(|e| DomainError::InfrastructureError(e.to_string()))?;
+        Ok(())
+    }
+}