We now accept and report state changes via JSON. Also added homeassistant MQTT autodiscovery.

include/mqtt.h

@@ -7,4 +7,5 @@
 static PubSubClient mqtt(wifi);
 
 void mqtt_setup();
-void mqtt_loop();
+void mqtt_loop();
+void mqtt_publish_current_state(String state);

include/state.h

@@ -0,0 +1,26 @@
+#pragma once
+#include <Arduino.h>
+#include <ArduinoJson.h>
+#include "prototypes.h"
+
+class State {
+    AnimationMode _mode = AM_NONE;
+    uint16_t _duration = 0;
+    int16_t _brightness = -1;
+    uint8_t _speedup = 0;
+    CRGB _color = CRGB::Black;
+
+    public:
+    void parse_json(char* str);
+    void set(String key, String value);
+    void commit();
+    static void publish_current_state();
+
+    void parse_state(String state);
+    void parse_mode(String mode);
+    void set_mode(AnimationMode mode);
+    void set_duration(uint16_t duration);
+    void set_brightness(uint8_t brightness);
+    void set_color(JsonObject rgb);
+    void set_speedup(uint8_t speedup);
+};