/*
  Creado: Luis  Alvarez (edualv1723@gmail.com)
  https://alvelectronics.com
*/

#include <WiFi.h>
#include <WebServer.h>

const char* ssid = "TuSSID";      
const char* password = "TuPassword";

WebServer server(80);

// Pines RGB
const int redPin = 14;
const int greenPin = 12;
const int bluePin = 27;

void setColor(int r, int g, int b) {
  // Para LED Ánodo Común → invertir valor PWM
  ledcWrite(0, 255 - r);
  ledcWrite(1, 255 - g);
  ledcWrite(2, 255 - b);
}

void handleRoot() {
  String html = "";
  html += "
Control de LED RGB - ESP32
";
  html += "";
  html += "";
  server.send(200, "text/html", html);
}

void handleSetColor() {
  if (server.hasArg("hex")) {
    String hex = server.arg("hex");
    long number = strtol(&hex[1], NULL, 16);
    int r = number >> 16;
    int g = (number >> 8) & 0xFF;
    int b = number & 0xFF;
    setColor(r, g, b);
    Serial.printf("Color: R=%d, G=%d, B=%d\n", r, g, b);
  }
  server.send(200, "text/plain", "Color cambiado");
}

void setup() {
  Serial.begin(115200);

  // Configurar PWM en 3 canales
  ledcSetup(0, 5000, 8);
  ledcSetup(1, 5000, 8);
  ledcSetup(2, 5000, 8);

  ledcAttachPin(redPin, 0);
  ledcAttachPin(greenPin, 1);
  ledcAttachPin(bluePin, 2);

  setColor(0, 0, 0); // Apagado inicial

  WiFi.begin(ssid, password);
  Serial.print("Conectando a WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println();
  Serial.print("Conectado, IP: ");
  Serial.println(WiFi.localIP());

  server.on("/", handleRoot);
  server.on("/setColor", handleSetColor);

  server.begin();
  Serial.println("Servidor HTTP iniciado");
}

void loop() {
  server.handleClient();
}