application: schedule bounded context

crates/application/src/schedule/get_epg.rs

@@ -0,0 +1,37 @@
+use chrono::Utc;
+
+use domain::models::ScheduledSlot;
+use domain::value_objects::ChannelId;
+use domain::{DomainResult, ScheduleEngineService};
+
+use super::deps::ScheduleDeps;
+use super::queries::GetEpgQuery;
+
+/// Return EPG (electronic program guide) data for a channel.
+///
+/// Returns the slots that overlap the active schedule's validity window.
+/// Returns an empty vec when no schedule is active.
+pub async fn execute(
+    deps: &ScheduleDeps,
+    query: GetEpgQuery,
+) -> DomainResult<Vec<ScheduledSlot>> {
+    let channel_id = ChannelId::from(query.channel_id);
+    let now = Utc::now();
+
+    let schedule = match deps.schedule_query.find_active(channel_id, now).await? {
+        Some(s) => s,
+        None => return Ok(vec![]),
+    };
+
+    let slots = ScheduleEngineService::get_epg(
+        &schedule,
+        schedule.valid_from(),
+        schedule.valid_until(),
+    );
+
+    Ok(slots.into_iter().cloned().collect())
+}
+
+#[cfg(test)]
+#[path = "tests/get_epg.rs"]
+mod tests;