#include <LiquidCrystal_I2C.h>
#include <Arduino_FreeRTOS.h>
#include "task.h"
#include "semphr.h"

#define BUTTON_PIN_S 13 
#define BUTTON_PIN_H 12 
#define BUTTON_PIN_M 11 

LiquidCrystal_I2C lcd(0x27,16,2);
bool pom1 = false;
bool pom2 = false;
int hours = 0;
int minutes = 0;
int seconds =0;


bool isInSettings = true;

TaskHandle_t TaskHandle_displayTime;
TaskHandle_t TaskHandle_calculateTime;
TaskHandle_t TaskHandle_checkButton;
TaskHandle_t TaskHandle_adjustHours;

SemaphoreHandle_t buttonSemaphore = NULL;

void setup() {
    lcd.init();
    lcd.backlight();

    lcd.setCursor(0, 0); 
    lcd.print("Time editor");

    buttonSemaphore = xSemaphoreCreateBinary();

    xTaskCreate(displayTimeTask, "DisplayTimeTask", 128, NULL, 1, &TaskHandle_displayTime);
    xTaskCreate(calculateTimeTask, "CalculateTimeTask", 128, NULL, 2, &TaskHandle_calculateTime);
    xTaskCreate(checkButtonTask, "CheckButtonTask", 128, NULL, 1, &TaskHandle_checkButton);
    xTaskCreate(adjustHoursTask, "AdjustHoursTask", 64, NULL, 1, &TaskHandle_adjustHours);
    xTaskCreate(adjustMinutesTask,"lol",64,NULL,1,NULL);
    vTaskStartScheduler();

    lcd.backlight();
}

void loop() {}

void calculateTimeTask(void *pvParameters) {
    (void) pvParameters;
 
    for (;;) {
        
          if(!isInSettings){

          
            seconds++;

            if (seconds >= 60) {
                seconds = 0;
                minutes++;
            }

            if (minutes >= 60) {
                minutes = 0;
                hours++;
            }

            if (hours >= 24) {
                hours = 0;
              
            }
        
          }
        vTaskDelay(pdMS_TO_TICKS(1000));
    }
  
    
}

void displayTimeTask(void *pvParameters) {
    (void) pvParameters;

    for (;;) {
       
            displayTime();

        vTaskDelay(pdMS_TO_TICKS(500));
    }
}

void checkButtonTask(void *pvParameters) {
    (void) pvParameters;

    pinMode(BUTTON_PIN_S, INPUT);

    bool buttonPressed = false;

    for (;;) {
        if (digitalRead(BUTTON_PIN_S) == LOW && !buttonPressed) {
            buttonPressed = true;
            isInSettings = !isInSettings; 
            xSemaphoreGive(buttonSemaphore); 
            vTaskDelay(pdMS_TO_TICKS(200)); 
        } else if (digitalRead(BUTTON_PIN_S) == HIGH && buttonPressed) {
            buttonPressed = false;
            
        }
        vTaskDelay(pdMS_TO_TICKS(10)); 
    }
}


void adjustHoursTask(void *pvParameters) {
    (void) pvParameters;

    if (!isInSettings){
    pinMode(BUTTON_PIN_H, INPUT);

    bool buttonPressed = false;

    for (;;) {
      if(isInSettings){
        if (digitalRead(BUTTON_PIN_H) == LOW && !buttonPressed) {
            buttonPressed = true;
           
            if(pom1)
            hours++;

            pom1 = true;
            if (hours > 23) hours = 0; 
            
            xSemaphoreGive(buttonSemaphore);
            vTaskDelay(pdMS_TO_TICKS(200));
        } else if (digitalRead(BUTTON_PIN_H) == HIGH && buttonPressed) {
            buttonPressed = false;
        }
      }
        vTaskDelay(pdMS_TO_TICKS(10));
    }
    }
}

void adjustMinutesTask(void *pvParameters) {
    (void) pvParameters;

    if (!isInSettings){
        pinMode(BUTTON_PIN_M, INPUT);

        bool buttonPressed = false;

        for (;;) {
          if(isInSettings){
            if (digitalRead(BUTTON_PIN_M) == LOW && !buttonPressed) {
                buttonPressed = true;
               
                if(pom2)
                minutes++;

                pom2 = true;
                if (minutes > 59) minutes = 0; 
               
                xSemaphoreGive(buttonSemaphore);
                vTaskDelay(pdMS_TO_TICKS(200));
            } else if (digitalRead(BUTTON_PIN_M) == HIGH && buttonPressed) {
                buttonPressed = false;
            }
          }
            vTaskDelay(pdMS_TO_TICKS(10)); 
        }
    }
}


void displayTime() {
    lcd.setCursor(0, 1);

    lcd.print("Time: ");
    String hoursStr = (hours < 10 ? "0" : "") + String(hours);
    String minutesStr = (minutes < 10 ? "0" : "") + String(minutes);
    String secondsStr = (seconds < 10 ? "0" : "") + String(seconds);

    lcd.print(hoursStr);
    lcd.print(":");
    lcd.print(minutesStr);
    lcd.print(":");
    lcd.print(secondsStr);
}