Get the last item when using --get with no ids/tags/meta.

src/db.rs

@@ -330,6 +330,28 @@ pub fn get_item(conn: &Connection, item_id: i64) -> Result<Option<Item>> {
     }
 }
 
+pub fn get_item_last(conn: &Connection) -> Result<Option<Item>> {
+    debug!("DB: Getting last item");
+    let mut statement = conn
+        .prepare_cached("
+          SELECT id, ts, size, compression
+          FROM items
+          ORDER BY id DESC
+          LIMIT 1")
+        .context("Problem preparing SQL statement")?;
+
+    let mut rows = statement.query([])?;
+
+    match rows.next()? {
+        Some(row) => Ok(Some(Item {
+            id: row.get(0)?,
+            ts: row.get(1)?,
+            size: row.get(2)?,
+            compression: row.get(3)?
+        })),
+        None => Ok(None)
+    }
+}
 
 pub fn get_item_tags(conn: &Connection, item: &Item) -> Result<Vec<Tag>> {
     debug!("DB: Getting tags for item: {:?}", item);

src/main.rs

@@ -394,9 +394,7 @@ fn mode_save(cmd: &mut Command, args: Args, ids: &mut Vec<i64>, tags: &mut Vec<S
 
 
 fn mode_get(cmd: &mut Command, args: Args, ids: &mut Vec<i64>, tags: &mut Vec<String>, conn: &mut Connection, data_path: PathBuf) -> Result<()> {
-    if ids.is_empty() && tags.is_empty() {
+    if ! ids.is_empty() && ! tags.is_empty() {
-        cmd.error(ErrorKind::InvalidValue, "No ID or tags given, you must supply exactly one ID or atleast one tag when using --get").exit();
-    } else if ! ids.is_empty() && ! tags.is_empty() {
         cmd.error(ErrorKind::InvalidValue, "Both ID and tags given, you must supply exactly one ID or atleast one tag when using --get").exit();
     } else if ids.len() > 1 {
         cmd.error(ErrorKind::InvalidValue, "More than one ID given, you must supply exactly one ID or atleast one tag when using --get").exit();
@@ -411,7 +409,7 @@ fn mode_get(cmd: &mut Command, args: Args, ids: &mut Vec<i64>, tags: &mut Vec<St
     let item_maybe = match tags.is_empty() && meta.is_empty() {
         true => match ids.iter().next() {
             Some(item_id) => db::get_item(conn, *item_id)?,
-            None => None
+            None => db::get_item_last(conn)?
         },
         false => db::get_item_matching(conn, tags, &meta)?
     };