derive Serialize for tidepool::Config

tidepool/src/config.rs

@@ -1,22 +1,25 @@
 //! Config file schema (serde) for tidepool. See `example-configs/` for usage samples.
 
-use serde::Deserialize;
+use serde::{Deserialize, Serialize};
 
-#[derive(Deserialize, PartialEq, Debug)]
+#[derive(Serialize, Deserialize, PartialEq, Debug, Clone)]
 pub struct Config {
     pub game: GameConfig,
     #[serde(default)]
     pub bot: BotConfig,
 }
 
-#[derive(Deserialize, PartialEq, Debug)]
+#[derive(Serialize, Deserialize, PartialEq, Debug, Clone)]
 pub struct GameConfig {
     pub goal: usize,
-    #[serde(default = "defaults::rules", deserialize_with = "game_rules_config")]
+    #[serde(
+        default = "defaults::rules",
+        deserialize_with = "de::game_rules_config"
+    )]
     pub rules: GameRulesConfig,
 }
 
-#[derive(Deserialize, PartialEq, Debug)]
+#[derive(Serialize, Deserialize, PartialEq, Debug, Clone)]
 pub struct GameRulesConfig {
     #[serde(default = "defaults::min_garbage")]
     pub min: usize,
@@ -34,32 +37,7 @@ impl GameRulesConfig {
     };
 }
 
-fn game_rules_config<'de, D>(deserializer: D) -> Result<GameRulesConfig, D::Error>
-where
-    D: serde::Deserializer<'de>,
-{
-    // all this nonsense is to support `rules = "jstris"` as an entry
-
-    #[derive(Deserialize)]
-    #[serde(untagged)]
-    enum Variant {
-        Jstris(Jstris),
-        Custom(GameRulesConfig),
-    }
-
-    #[derive(Deserialize)]
-    enum Jstris {
-        #[serde(rename = "jstris")]
-        Tag,
-    }
-
-    Variant::deserialize(deserializer).map(|var| match var {
-        Variant::Jstris(_) => GameRulesConfig::JSTRIS,
-        Variant::Custom(c) => c,
-    })
-}
-
-#[derive(Deserialize, PartialEq, Debug)]
+#[derive(Serialize, Deserialize, PartialEq, Debug, Clone)]
 pub struct BotConfig {
     // TODO: weights
     // TODO: algorithm
@@ -102,6 +80,33 @@ mod defaults {
     }
 }
 
+mod de {
+    use super::*;
+
+    pub fn game_rules_config<'de, D>(deserializer: D) -> Result<GameRulesConfig, D::Error>
+    where
+        D: serde::Deserializer<'de>,
+    {
+        #[derive(Deserialize)]
+        #[serde(untagged)]
+        enum Variant {
+            Preset(Preset),
+            Custom(GameRulesConfig),
+        }
+
+        #[derive(Deserialize)]
+        enum Preset {
+            #[serde(rename = "jstris")]
+            Jstris,
+        }
+
+        Variant::deserialize(deserializer).map(|var| match var {
+            Variant::Preset(Preset::Jstris) => GameRulesConfig::JSTRIS,
+            Variant::Custom(c) => c,
+        })
+    }
+}
+
 #[cfg(test)]
 mod test {
     use super::*;