#include "DHTesp.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <LiquidCrystal_I2C.h>

#define LED_PIN 4 // Define el pin donde está conectado el LED
#define LDR_PIN 12
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define DHT_PIN 15
// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
#define OLED_RESET     -1 // Reset pin # (or -1 if sharing Arduino reset pin)

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

TaskHandle_t xHandlePrintTemperature;
TaskHandle_t xHandleCheckLight;

int systemStatus = 1;

DHTesp dhtSensor;

int getThreshold(void){
  // The potentiometer has a resolution from 0 to 4095 so this will be interpolated
  // to temperatures from 18º to 30º
  // So, 30-18 = 12. So the potentiometer will control the temperature in 12 slots
  // meaning, the valued read from the potentiometer has to be divided by 341 aproximately
  int value = analogRead(36);
  return value/341+18;
}

int getTemp(void){
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  return data.temperature;
}

void vTaskPeriodicPrintTemperature(void* pvParam)
{
  const TickType_t xDelay = 250 / portTICK_PERIOD_MS;
  for(;;) {
    display.begin(SSD1306_SWITCHCAPVCC, 0x3C);

    // Clear the buffer
    display.clearDisplay();

    display.setTextSize(2);
    display.setTextColor(WHITE);
    display.setCursor(1,0);
    display.clearDisplay();
    char buffer[80]; // Asegúrate de que el buffer es suficientemente grande para la cadena completa.
  
    snprintf(buffer, sizeof(buffer), "Temp actual: %d\nThreshold: %d", getTemp(), getThreshold());
    display.println(buffer);
    display.display();

    vTaskDelay(xDelay);
  }
  vTaskDelete(NULL);
}

void vTaskPeriodicCheckLight(void* pvParam)
{
  const TickType_t xDelay = 5000 / portTICK_PERIOD_MS;
  for(;;){
    if (digitalRead(LDR_PIN) == LOW) {
      if(systemStatus == 0){
        Serial.println("Light! System on\n");
        systemStatus = 1;
        digitalWrite(LED_PIN, HIGH);   // set the LED to the opposite state
        vTaskResume(xHandlePrintTemperature);
      }
    } else {
      if(systemStatus ==1){
        systemStatus = 0;
        Serial.println("Dark! System off\n");
        vTaskSuspend(xHandlePrintTemperature);
        digitalWrite(LED_PIN, LOW);   // set the LED to the opposite state
      }
    }
    vTaskDelay(xDelay);
  }
  vTaskDelete(NULL);
}



void app_main(){
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(LDR_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  xTaskCreate(vTaskPeriodicPrintTemperature, "Task 3", 1500, NULL, 1, &xHandlePrintTemperature);
  xTaskCreate(vTaskPeriodicCheckLight, "Task 4", 1500, NULL, 1, &xHandleCheckLight);
  digitalWrite(LED_PIN, HIGH);
}

void setup() {
  app_main();
}

void loop() {


}