#include <WiFi.h>
#include <HTTPClient.h>

const int SOIL_PIN = 34;
const int VALVE_PIN = 23;
const int STATUS_LED = 2;

const char* WIFI_SSID = "Wokwi-GUEST";

const char* API = "https://v2.tecnologiasinteligentes.io/api/iot/device/decision?demo=true";

void setup() {

  Serial.begin(115200);

  pinMode(VALVE_PIN, OUTPUT);
  pinMode(STATUS_LED, OUTPUT);

  digitalWrite(VALVE_PIN, LOW);
  digitalWrite(STATUS_LED, LOW);

  WiFi.begin(WIFI_SSID, "", 6);

  Serial.print("Conectando WiFi");

  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }

  digitalWrite(STATUS_LED, HIGH);

  Serial.println();
  Serial.println("ESP32 V2 IoT conectado");
  Serial.println(WiFi.localIP());
}

void loop() {

  int raw = analogRead(SOIL_PIN);

  // 0–4095 → 100–0 %
  int moisture = map(raw, 0, 4095, 100, 0);

  Serial.printf(
    "Humedad del suelo: %d%%\n",
    moisture
  );

  if (WiFi.status() == WL_CONNECTED) {

    HTTPClient http;

    String url =
      String(API) +
      "?soil_moisture=" +
      String(moisture);

    http.begin(url);

    int code = http.GET();

    Serial.printf(
      "API → HTTP %d\n",
      code
    );

    if (code == 200) {

      String body = http.getString();

      Serial.println(body);

      bool water =
        body.indexOf("\"water\":true") >= 0;

      if (water) {

        digitalWrite(VALVE_PIN, HIGH);

        Serial.println("💧 REGANDO");

      } else {

        digitalWrite(VALVE_PIN, LOW);

        Serial.println("🌱 NO REGAR");
      }
    }

    http.end();
  }

  delay(5000);
}