feat: [torrust#870] implement traits Dispaly and FromStr for TrackerMode

packages/primitives/src/lib.rs

@@ -5,6 +5,8 @@
 //! by the tracker server crate, but also by other crates in the Torrust
 //! ecosystem.
 use std::collections::BTreeMap;
+use std::fmt;
+use std::str::FromStr;
 use std::time::Duration;
 
 use info_hash::InfoHash;
@@ -92,6 +94,32 @@ impl Default for TrackerMode {
     }
 }
 
+impl fmt::Display for TrackerMode {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        let display_str = match self {
+            TrackerMode::Public => "public",
+            TrackerMode::Listed => "listed",
+            TrackerMode::Private => "private",
+            TrackerMode::PrivateListed => "private_listed",
+        };
+        write!(f, "{display_str}")
+    }
+}
+
+impl FromStr for TrackerMode {
+    type Err = String;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s.to_lowercase().as_str() {
+            "public" => Ok(TrackerMode::Public),
+            "listed" => Ok(TrackerMode::Listed),
+            "private" => Ok(TrackerMode::Private),
+            "private_listed" => Ok(TrackerMode::PrivateListed),
+            _ => Err(format!("Unknown tracker mode: {s}")),
+        }
+    }
+}
+
 impl TrackerMode {
     #[must_use]
     pub fn is_open(&self) -> bool {