feat(channel): add auto-schedule feature to channels with background scheduler

k-tv-backend/domain/src/entities.rs

@@ -81,6 +81,7 @@ pub struct Channel {
     pub timezone: String,
     pub schedule_config: ScheduleConfig,
     pub recycle_policy: RecyclePolicy,
+    pub auto_schedule: bool,
     pub created_at: DateTime<Utc>,
     pub updated_at: DateTime<Utc>,
 }
@@ -100,6 +101,7 @@ impl Channel {
             timezone: timezone.into(),
             schedule_config: ScheduleConfig::default(),
             recycle_policy: RecyclePolicy::default(),
+            auto_schedule: false,
             created_at: now,
             updated_at: now,
         }

k-tv-backend/domain/src/repositories.rs

@@ -37,6 +37,7 @@ pub trait ChannelRepository: Send + Sync {
     async fn find_by_id(&self, id: ChannelId) -> DomainResult<Option<Channel>>;
     async fn find_by_owner(&self, owner_id: UserId) -> DomainResult<Vec<Channel>>;
     async fn find_all(&self) -> DomainResult<Vec<Channel>>;
+    async fn find_auto_schedule_enabled(&self) -> DomainResult<Vec<Channel>>;
     /// Insert or update a channel.
     async fn save(&self, channel: &Channel) -> DomainResult<()>;
     async fn delete(&self, id: ChannelId) -> DomainResult<()>;

k-tv-backend/domain/src/services/schedule/mod.rs

@@ -206,6 +206,14 @@ impl ScheduleEngineService {
             })
     }
 
+    /// Return the most recently generated schedule for a channel (used by the background scheduler).
+    pub async fn get_latest_schedule(
+        &self,
+        channel_id: ChannelId,
+    ) -> DomainResult<Option<GeneratedSchedule>> {
+        self.schedule_repo.find_latest(channel_id).await
+    }
+
     /// Look up the schedule currently active at `at` without generating a new one.
     pub async fn get_active_schedule(
         &self,