Break: support arena_unique_id

src/models/battle_results_dat.rs

@@ -10,14 +10,22 @@ use crate::result::Result;
 
 /// Represents un-pickled `battle_results.dat`.
 #[derive(Debug, Deserialize)]
-pub struct BattleResultsDat(
-    /// No idea what this is.
-    /// My best guess – some kind of checksum,
-    /// but none of MD5, SHA1, SHA224, SHA256, SHA384, SHA512, nor CRC64 over the buffer have matched.
-    pub u64,
+#[serde(from = "(u64, ByteBuf)")]
+pub struct BattleResultsDat {
+    pub arena_unique_id: u64,
+
     /// Protobuf-serialized battle results.
-    pub ByteBuf,
-);
+    pub buffer: ByteBuf,
+}
+
+impl From<(u64, ByteBuf)> for BattleResultsDat {
+    fn from((arena_unique_id, buffer): (u64, ByteBuf)) -> Self {
+        Self {
+            arena_unique_id,
+            buffer,
+        }
+    }
+}
 
 impl BattleResultsDat {
     /// Parses the pickled structure from the reader which contains `battle_results.dat`.
@@ -30,7 +38,7 @@ impl BattleResultsDat {
 
     /// Decodes the battle results from the internal buffer.
     pub fn decode_battle_results(&self) -> Result<BattleResults> {
-        BattleResults::decode(self.1.as_ref()).map_err(Error::DecodeFailed)
+        BattleResults::decode(self.buffer.as_ref()).map_err(Error::DecodeFailed)
     }
 }