#include "U8g2lib.h"


//U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 12, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8); // Software SPI
//U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE); // initialization for the used OLED display
//U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
U8G2_ST7920_128X64_1_SW_SPI u8g2(U8G2_R0, 10, 9, 8, 11);   //Enable, RW, RS, RESET (langsung di LCD ST7920 tidak bisa di wokwi) 
//U8GLIB_ST7920_128X64 u8g(10,9,8, U8G_PIN_NONE);
//U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);


#define BUTTON_UP_PIN 12	// PIN for UP button / Right Butotn
#define BUTTON_SELECT_PIN 8 // PIN for SELECT button
#define BUTTON_DOWN_PIN 4	// PIN for DOWN button / Left Button
#define BUTTON_MENU 2	// PIN for DOWN button / Left Button

int button_up_clicked = 0;	   // only perform action when button is clicked, and wait until another press
int button_select_clicked = 0; // same as above
int button_down_clicked = 0;   // same as above

//U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0); // [full framebuffer, size = 1024 bytes]

const int NUM_ITEMS = 4;		// Jumlah Menu
const int MAX_ITEM_LENGTH = 20; // Batas jumlah karakter nama menu
int current_screen = 0;			// Layar yang dipilih (Layar Menu/Layar Info)
int item_selected = 0;			// Menu yang diplih
int current_page = 0;


char menu_items[NUM_ITEMS][MAX_ITEM_LENGTH] = {
	{"1. INFO SSID"},
	{"2. CONNECT SSID"},
	{"3. KIRIM HP"},
	{"4. SIMPAN SD CARD"}};

void frame1() // Frame Kotak
{
	u8g2.drawFrame(3, 3, 120, 13);
}
void frame2()
{
	u8g2.drawFrame(3, 18, 120, 13);
}
void frame3()
{
	u8g2.drawFrame(3, 33, 120, 13);
}
void frame4()
{
	u8g2.drawFrame(3, 48, 120, 13);
}

void displayNPKC()
{
	int nf = 255;
	int pf = 255;
	int ptf = 255;
	int ecf = 100;
	String infoNitro;
	String infoPhos;
	String infoPotas;

	if (nf < 50)
	{
		infoNitro = "K";
	}
	else if (nf >= 50 && nf <= 200)
	{
		infoNitro = "I";
	}
	else
	{
		infoNitro = "B";
	}

	if (pf < 4)
	{
		infoPhos = "K";
	}
	else if (pf >= 4 && pf <= 14)
	{
		infoPhos = "I";
	}
	else
	{
		infoPhos = "B";
	}

	if (ptf < 50)
	{
		infoPotas = "K";
	}
	else if (ptf >= 50 && ptf <= 200)
	{
		infoPotas = "I";
	}
	else
	{
		infoPotas = "B";
	}
	u8g2.firstPage();
	do
	{
	u8g2.setFont(u8g2_font_5x7_tr); // Menggunakan jenis font 8x13 dengan bold rendering
	u8g2.drawStr(3, 10, "Nitrogen: ");
	u8g2.drawStr(3, 19, "Phosphorus: ");
	u8g2.drawStr(3, 28, "Potasium(K): ");
	u8g2.drawStr(3, 37, "EC: ");

	u8g2.setCursor(65, 10);
	u8g2.print(nf);
	u8g2.setCursor(65, 19);
	u8g2.print(pf);
	u8g2.setCursor(65, 28);
	u8g2.print(ptf);
	u8g2.setCursor(55, 37);
	u8g2.print(ecf);

	u8g2.drawStr(85, 10, "ppm");
	u8g2.drawStr(85, 19, "ppm");
	u8g2.drawStr(85, 28, "ppm");
	u8g2.drawStr(80, 37, "1/(Ohm.m)");

	u8g2.drawRFrame(10, 45, 106, 13, 5);
	u8g2.drawStr(16, 54, "N: ");
	u8g2.setCursor(26, 54);
	u8g2.print(infoNitro);
	u8g2.drawStr(46, 54, "P: ");
	u8g2.setCursor(66, 54);
	u8g2.print(infoPhos);
	u8g2.drawStr(86, 54, "K: ");
	u8g2.setCursor(106, 54);
	u8g2.print(infoPotas);
	} while (u8g2.nextPage());
}

void displayHumiTemp()
{
	int suhu = 18;
	int humid = 90;
	int ph = 14;
	u8g2.firstPage();
	do
	{
	u8g2.setFont(u8g2_font_6x13_tr); // Menggunakan jenis font 8x13 dengan bold rendering
	u8g2.drawStr(18, 20, "Suhu: ");
	u8g2.drawStr(18, 34, "Kelembaban: ");
	u8g2.drawStr(18, 48, "pH: ");

	u8g2.setCursor(85, 20);
	u8g2.print(suhu);
	u8g2.setCursor(85, 34);
	u8g2.print(humid);
	u8g2.setCursor(85, 48);
	u8g2.print(ph);

	u8g2.drawStr(100, 20, "C");
	u8g2.drawStr(100, 34, "%");
	} while (u8g2.nextPage());
}

void (*frames[])() = {frame1, frame2, frame3, frame4}; // Array Frame

void infoSSID() // Fungsi Info SSID
{
	u8g2.setFont(u8g_font_6x13Br);
	u8g2.drawStr(7, 16, "Info SSID Perangkat");

	u8g2.setFont(u8g_font_6x12r);
	u8g2.drawStr(5, 37, "SSID: WIFIKU ");

	u8g2.setFont(u8g_font_6x12r);
	u8g2.drawStr(5, 53, "PASSWORD: IYAWIFIKU ");
}

void connectSSID() // Fungsi menghubungkan SSID
{
	u8g2.setFont(u8g_font_6x13Br);
	u8g2.drawStr(7, 37, "Connecting SSID");
}

void kirimHP() // Fungsi mengirimkan data ke HP
{
	u8g2.setFont(u8g_font_6x13Br);
	u8g2.drawStr(7, 37, "Mengirim Data");
}

void saveSD() // Fungsi menyimpan data ke SD Card
{
	u8g2.setFont(u8g_font_6x13Br);
	u8g2.drawStr(7, 37, "Menyimpan Data");
}

void (*selectMenu[])() = {displayNPKC, displayHumiTemp, menu};

void setup()
{
	u8g2.setColorIndex(1); // set the color to white
	u8g2.begin();
	u8g2.setBitmapMode(1);
	u8g2.setContrast(30); // Mengatur Kontras

	pinMode(BUTTON_UP_PIN, INPUT_PULLUP);	  // up button
	pinMode(BUTTON_SELECT_PIN, INPUT_PULLUP); // select button
	pinMode(BUTTON_DOWN_PIN, INPUT_PULLUP);	  // down button
	pinMode(BUTTON_MENU, INPUT_PULLUP);	  // down button

	attachInterrupt(digitalPinToInterrupt(BUTTON_MENU), menuHandle, FALLING);

}

void loop()
{
	if ((digitalRead(BUTTON_DOWN_PIN) == LOW) && (button_down_clicked == 0))
		{
			current_page += 1;
			button_down_clicked = 1;
			if (current_page > 1)
			{
				current_page = 0;
			}
		}

		if ((digitalRead(BUTTON_UP_PIN) == LOW) && (button_up_clicked == 0))
		{
			current_page -= 1;
			button_up_clicked = 1;
			if (current_page < 0)
			{
				current_page = 1;
			}
		}

		if ((digitalRead(BUTTON_DOWN_PIN) == HIGH) && (button_down_clicked == 1))
		{ // unclick
			button_down_clicked = 0;
		}
		if ((digitalRead(BUTTON_UP_PIN) == HIGH) && (button_up_clicked == 1))
		{ // unclick
			button_up_clicked = 0;
		}

	if (current_page == 0){
		displayNPKC();
	} else if (current_page == 1){
		displayHumiTemp();
	} else{
		if ((digitalRead(BUTTON_MENU) == LOW))
		{
			current_page = 0;
		}
		menu();
	}
}

void menuHandle(){
	current_page == 2;
}

void menu()
{
	if (current_screen == 0)
	{
		if ((digitalRead(BUTTON_DOWN_PIN) == LOW) && (button_down_clicked == 0))
		{
			item_selected += 1;
			button_down_clicked = 1;
			if (item_selected > 3)
			{
				item_selected = 0;
			}
		}

		if ((digitalRead(BUTTON_UP_PIN) == LOW) && (button_up_clicked == 0))
		{
			item_selected -= 1;
			button_up_clicked = 1;
			if (item_selected < 0)
			{
				item_selected = 3;
			}
		}

		if ((digitalRead(BUTTON_DOWN_PIN) == HIGH) && (button_down_clicked == 1))
		{ // unclick
			button_down_clicked = 0;
		}
		if ((digitalRead(BUTTON_UP_PIN) == HIGH) && (button_up_clicked == 1))
		{ // unclick
			button_up_clicked = 0;
		}
	}

	if ((digitalRead(BUTTON_SELECT_PIN) == LOW) && (button_select_clicked == 0))
	{							   // select button clicked, jump between screens
		button_select_clicked = 1; // set button to clicked to only perform the action once
		if (current_screen == 0)
		{
			current_screen = 1;
		} // menu items screen --> screenshots screen
		else
		{
			current_screen = 0;
		} // qr codes screen --> menu items screen
	}
	if ((digitalRead(BUTTON_SELECT_PIN) == HIGH) && (button_select_clicked == 1))
	{ // unclick
		button_select_clicked = 0;
	}

	u8g2.firstPage();
	do
	{
		if (current_screen == 0)
		{
			frames[item_selected]();
			u8g2.setFont(u8g2_font_5x7_tr);
			u8g2.drawStr(5, 12, menu_items[0]);

			u8g2.setFont(u8g2_font_5x7_tr);
			u8g2.drawStr(5, 27, menu_items[1]);

			u8g2.setFont(u8g2_font_5x7_tr);
			u8g2.drawStr(5, 42, menu_items[2]);

			u8g2.setFont(u8g2_font_5x7_tr);
			u8g2.drawStr(5, 57, menu_items[3]);
		}

		else if (current_screen == 1)
		{ // SCREENSHOTS SCREEN
			if (item_selected == 0)
			{
				infoSSID();
			}
			else if (item_selected == 1)
			{
				connectSSID();
			}
			else if (item_selected == 2)
			{
				//displayHumiTemp();
				 kirimHP();
			}
			else
			{
				saveSD();
				//displayNPKC();
			}
		}
	} while (u8g2.nextPage());
}