split up json parsing logic

src-slider_io/src/lighting/config.rs

@@ -1,3 +1,5 @@
+use serde_json::Value;
+
 #[derive(Debug, Clone, Copy)]
 pub enum ReactiveLayout {
   Even { splits: usize },
@@ -20,3 +22,36 @@ pub enum LedMode {
     port: String,
   },
 }
+
+impl LedMode {
+  pub fn from_serde_value(v: &Value) -> Option<Self> {
+    Some(match v["ledMode"].as_str()? {
+      "none" => LedMode::None,
+      "reactive-4" => LedMode::Reactive {
+        layout: ReactiveLayout::Even { splits: 4 },
+        sensitivity: u8::try_from(v["ledSensitivity"].as_i64()?).ok()?,
+      },
+      "reactive-8" => LedMode::Reactive {
+        layout: ReactiveLayout::Even { splits: 8 },
+        sensitivity: u8::try_from(v["ledSensitivity"].as_i64()?).ok()?,
+      },
+      "reactive-16" => LedMode::Reactive {
+        layout: ReactiveLayout::Even { splits: 16 },
+        sensitivity: u8::try_from(v["ledSensitivity"].as_i64()?).ok()?,
+      },
+      "reactive-voltex" => LedMode::Reactive {
+        layout: ReactiveLayout::Voltex,
+        sensitivity: u8::try_from(v["ledSensitivity"].as_i64()?).ok()?,
+      },
+      "attract" => LedMode::Attract,
+      "test" => LedMode::Test,
+      "websocket" => LedMode::Websocket {
+        url: v["ledWebsocketUrl"].as_str()?.to_string(),
+      },
+      "serial" => LedMode::Serial {
+        port: v["ledSerialPort"].as_str()?.to_string(),
+      },
+      _ => return None,
+    })
+  }
+}