feat: rewrite NeoPattern example

examples/neopattern/NeoPatternState.h

@@ -0,0 +1,59 @@
+#ifndef __NEOPATTERN_STATE__
+#define __NEOPATTERN_STATE__
+
+#include <ArduinoJson.h>
+
+struct NeoPatternState {
+    // Default values
+    static constexpr uint DEFAULT_PATTERN = 0;
+    static constexpr uint DEFAULT_COLOR = 0xFF0000; // Red
+    static constexpr uint DEFAULT_COLOR2 = 0x0000FF; // Blue
+    static constexpr uint DEFAULT_TOTAL_STEPS = 16;
+    static constexpr uint DEFAULT_BRIGHTNESS = 64;
+
+    uint pattern = DEFAULT_PATTERN;
+    uint color = DEFAULT_COLOR;
+    uint color2 = DEFAULT_COLOR2;
+    uint totalSteps = DEFAULT_TOTAL_STEPS;
+    uint brightness = DEFAULT_BRIGHTNESS;
+
+    NeoPatternState() = default;
+    
+    NeoPatternState(uint p, uint c, uint c2, uint steps, uint b)
+        : pattern(p), color(c), color2(c2), totalSteps(steps), brightness(b) {}
+
+    void mapJsonObject(JsonObject& root) const {
+        root["pattern"] = pattern;
+        root["color"] = color;
+        root["color2"] = color2;
+        root["totalSteps"] = totalSteps;
+        root["brightness"] = brightness;
+    }
+    
+    void fromJsonObject(JsonObject& json) {
+        pattern = json["pattern"] | pattern;
+        color = json["color"] | color;
+        color2 = json["color2"] | color2;
+        totalSteps = json["totalSteps"] | totalSteps;
+        brightness = json["brightness"] | brightness;
+    }
+
+    // Helper methods for JSON string conversion
+    String toJsonString() const {
+        JsonDocument doc;
+        JsonObject root = doc.to<JsonObject>();
+        mapJsonObject(root);
+        String result;
+        serializeJson(doc, result);
+        return result;
+    }
+    
+    void fromJsonString(const String& jsonStr) {
+        JsonDocument doc;
+        deserializeJson(doc, jsonStr);
+        JsonObject root = doc.as<JsonObject>();
+        fromJsonObject(root);
+    }
+};
+
+#endif