Add showing snapshots by ID.

source/cli/mod.rs

@@ -90,8 +90,12 @@ pub enum SnapshotSubcommands {
   /// Show a snapshot.
   Show {
     /// The date of the snapshot to show, defaults to today.
-    #[clap(short, long)]
+    #[clap(short, long, group = "selection")]
     date: Option<NaiveDate>,
+
+    /// The ID of the snapshot to show.
+    #[clap(long, group = "selection")]
+    id: Option<i64>,
   },
 }
 

source/cli/run.rs

@@ -58,16 +58,24 @@ pub async fn run() -> Result<()> {
         }
       }
 
-      SnapshotSubcommands::Show { date } => {
+      SnapshotSubcommands::Show { date, id } => {
         let date = date.unwrap_or_else(today);
-        let snapshot = if let Some(snapshot) =
-          SnapshotModel::get_by_date(&db, date).await?
-        {
-          info!("Snapshot {snapshot:?}");
-          snapshot
-        } else {
-          info!("No snapshot exists for {date}");
+
+        let snapshot = match id {
+          Some(id) => SnapshotModel::get_by_id(&db, id).await,
+          None => SnapshotModel::get_by_date(&db, date).await,
+        }?;
+
+        let snapshot = match (snapshot, id) {
+          (None, Some(id)) => {
+            info!("No snapshot exists for id {id}");
             return Ok(());
+          }
+          (None, None) => {
+            info!("No snapshot exists for date {date}");
+            return Ok(());
+          }
+          (Some(snapshot), _) => snapshot,
         };
 
         for group in GroupDataModel::get_all_by_snapshot(&db, &snapshot).await?

source/snapshots/mod.rs

@@ -27,6 +27,19 @@ impl SnapshotModel {
     Ok(existing)
   }
 
+  /// Get a snapshot by a given ID.
+  pub async fn get_by_id(
+    db: &DatabaseConnection,
+    id: i64,
+  ) -> Result<Option<Self>> {
+    let snapshot = SnapshotEntity::find()
+      .filter(SnapshotColumn::Id.eq(id))
+      .one(db)
+      .await?;
+
+    Ok(snapshot)
+  }
+
   /// Get all snapshots.
   pub async fn get_all(db: &DatabaseConnection) -> Result<Vec<Self>> {
     let snapshots = SnapshotEntity::find().all(db).await?;