#ifndef __NEOPATTERN_STATE__
#define __NEOPATTERN_STATE__

#include <ArduinoJson.h>
#include "NeoPattern_api_json.h"
#include "NeoPattern_api_modes.cpp"
#include "utils_print.h"

// TODO move ARRAY_LENGTH to core lib
#define ARRAY_LENGTH(array) sizeof(array)/sizeof(array[0])

struct NeoPatternState {
    uint mode;
    uint value;
    const char* valueStr;
    // ------------------------------------------------------------------------------------------
    //Check if given object is valid and contains fields: JSON_MODE_NODE, JSON_VALUE
    int verifyJsonObject(JsonObject& json){
        return json.success() 
            && json.containsKey(JSON_MODE_NODE)
            && json.containsKey(JSON_VALUE);
    };
    JsonObject& toJsonObject() {
        StaticJsonBuffer<200> jsonBuffer;
        JsonObject& root = jsonBuffer.createObject();
        root["mode"] = mode;
        root["value"] = value;
        return root;
    }
    String toJsonString(){
        StaticJsonBuffer<200> jsonBuffer;
        JsonObject& root = jsonBuffer.createObject();
        root["mode"] = mode;
        root["value"] = value;
        String jsonString;
        root.printTo(jsonString);
        return jsonString;
    }
    // Map a json object to this struct.
    void fromJsonObject(JsonObject& json){
        if(!verifyJsonObject(json)){
            PRINT_MSG(Serial, "PatternState.fromJsonObject", "cannot parse JSON");
            return;
        }
        mode = atoi(json[JSON_MODE_NODE]);
        mode = mode < ARRAY_LENGTH(PIXEL_FNCS) ? mode : 0;
        value = json[JSON_VALUE];
        valueStr = json[JSON_VALUE];
    };
    // Parse a json string and map parsed object
    void fromJsonString(String& str){
        StaticJsonBuffer<200> jsonBuffer;
        JsonObject& json = jsonBuffer.parseObject(str);
        fromJsonObject(json);
    };
};

#endif