/*******
    work <client>
 *******/
#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
#include <Adafruit_NeoPixel.h>

const char* ssid = "YOUR_SSID";
const char* password = "YOUR_PASSWORD";

const char* serverUrl = "http://xxx.xxx.x.xx/rgb";



#define LED_PIN 6
#define STP_PIN 5
#define NUM_LEDS   20
#define NUMPIXELS 2 // Popular NeoPixel ring size

Adafruit_NeoPixel strip(NUM_LEDS, STP_PIN, NEO_GRB + NEO_KHZ800);
//Adafruit_NeoPixel pixels(NUMPIXELS, LED_PIN, NEO_RGBW + NEO_KHZ800); // この行を変更

void setup() {
  //Serial.begin(115200);
  Serial.begin(9600);
  WiFi.begin(ssid, password);
  Serial.print("Connecting");

  int retry=0;

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
    retry++;
    /*
    if (retry > 20) {
      Serial.println("\nWiFi connection failed!");
      Serial.printf("Status code: %d\n", WiFi.status());
      return;
    }
    */
  }
    Serial.println("\nConnected!");
    //pixels.begin();
    //pixels.show();
    strip.begin();
    strip.show();
    Serial.println("client start");

}

void loop() {
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    http.begin(serverUrl);
    int httpCode = http.GET();
    Serial.println("start");
    //Serial.println("httpcode:" + httpCode);
    Serial.print("httpcode:");
    Serial.println(httpCode);

      if (httpCode == 200) {
          String payload = http.getString();
          StaticJsonDocument<200> doc;
          DeserializationError error = deserializeJson(doc, payload);

          if (!error) {
            int r = doc["r"];
            int g = doc["g"];
            int b = doc["b"];
            Serial.printf("Received: R=%d, G=%d, B=%d\n", r, g, b);
            for(int i=0; i<NUM_LEDS; i++) { // For each pixel...
/*
                if(i <= NUMPIXELS){
                    pixels.setPixelColor(i, pixels.Color(r, g, b));
                    pixels.show();
                }
*/  
                strip.setPixelColor(i, strip.Color(r, g, b));
                strip.show();
               
            }
          }
      }
    http.end();
  }else{
    //Serial.println("Wifi not connected:");
    //Serial.println(WiFi.status());
  }
  delay(10);
}