Add database stats

src/lib.rs

@@ -4,7 +4,7 @@ mod error;
 use error::{Error, MpdResult};
 use itertools::Itertools;
 mod structs;
-pub use structs::{Position, Status, Track};
+pub use structs::{Position, Stats, Status, Track};
 
 /// some unprintable character to separate repeated keys
 const SEPARATOR: char = '\x02';
@@ -280,4 +280,28 @@ OK";
     let queue = read_playlist_info("OK".lines());
     assert_eq!(queue, Ok(vec![]));
   }
+
+  #[test]
+  fn de_stats_test() {
+    let input_str = "uptime: 23691
+playtime: 11288
+artists: 2841
+albums: 2455
+songs: 40322
+db_playtime: 11620284
+db_update: 1588433046";
+    let s: Stats = deserialize_response(input_str.lines()).unwrap();
+    assert_eq!(
+      s,
+      Stats {
+        uptime:      Duration::from_secs(23691),
+        playtime:    Duration::from_secs(11288),
+        artists:     2841,
+        albums:      2455,
+        songs:       40322,
+        db_playtime: Duration::from_secs(11620284),
+        db_update:   1588433046,
+      }
+    );
+  }
 }

src/structs.rs

@@ -103,6 +103,23 @@ pub struct Status {
   pub error:          Option<String>,
 }
 
+/// Database statistics as returned by the `stats` command.
+#[derive(Deserialize, Clone, Debug, Default, PartialEq)]
+#[serde(default)]
+pub struct Stats {
+  pub artists:     u32,
+  pub albums:      u32,
+  pub songs:       u32,
+  #[serde(deserialize_with = "de_time_int")]
+  pub uptime:      Duration,
+  #[serde(deserialize_with = "de_time_int")]
+  pub db_playtime: Duration,
+  // TODO: this is a unix era. use some datetime for it
+  pub db_update:   u32,
+  #[serde(deserialize_with = "de_time_int")]
+  pub playtime:    Duration,
+}
+
 /// Deserialization helpers to handle the quirks of mpd’s output.
 mod helpers {
   use super::*;