#include <GxEPD2_BW.h>
#include <Adafruit_GFX.h>

// =====================================================
// ESP32 DevKit + Wokwi 2.9" E-Paper
// Wokwi part: board-epaper-2in9
// =====================================================

#define EPD_CS    5
#define EPD_DC    17
#define EPD_RST   16
#define EPD_BUSY  4
#define EPD_DIN  23

#define EPD_CLK   18



// Wokwi 2.9" e-Paper
GxEPD2_BW<GxEPD2_290, GxEPD2_290::HEIGHT> display(
  GxEPD2_290(
    EPD_CS,
    EPD_DC,
    EPD_RST,
    EPD_BUSY
  )
);


// =====================================================
// Draw TODAY checklist
// =====================================================

void drawChecklist()
{
  display.setFullWindow();

  display.firstPage();

  do
  {
    display.fillScreen(GxEPD_WHITE);

    display.setTextColor(GxEPD_BLACK);
    display.setFont(NULL);

    // -----------------------------------------------
    // TITLE
    // -----------------------------------------------

    display.setTextSize(2);
    display.setCursor(105, 25);
    display.print("TODAY");

    display.drawLine(90, 31, 205, 31, GxEPD_BLACK);


    // -----------------------------------------------
    // 1. Morning Walk - CHECKED
    // -----------------------------------------------

    display.drawRect(10, 40, 18, 18, GxEPD_BLACK);

    // Check mark
    display.drawLine(13, 49, 18, 54, GxEPD_BLACK);
    display.drawLine(18, 54, 26, 44, GxEPD_BLACK);

    display.setTextSize(1);
    display.setCursor(38, 53);
    display.print("Morning Walk");

    display.drawLine(8, 62, 288, 62, GxEPD_BLACK);


    // -----------------------------------------------
    // 2. Read Book - CHECKED
    // -----------------------------------------------

    display.drawRect(10, 69, 18, 18, GxEPD_BLACK);

    display.drawLine(13, 78, 18, 83, GxEPD_BLACK);
    display.drawLine(18, 83, 26, 73, GxEPD_BLACK);

    display.setCursor(38, 82);
    display.print("Read Book");

    display.drawLine(8, 91, 288, 91, GxEPD_BLACK);


    // -----------------------------------------------
    // 3. Work on Project
    // -----------------------------------------------

    display.drawRect(10, 98, 18, 18, GxEPD_BLACK);

    display.setCursor(38, 111);
    display.print("Work on Project");

    display.drawLine(8, 120, 288, 120, GxEPD_BLACK);


    // -----------------------------------------------
    // 4. Call Mom
    // -----------------------------------------------

    display.drawRect(10, 127, 18, 18, GxEPD_BLACK);

    display.setCursor(38, 140);
    display.print("Call Mom");

  }
  while (display.nextPage());
}


// =====================================================
// SETUP
// =====================================================

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

  Serial.println("ESP32 Wokwi 2.9 inch E-Paper");
  Serial.println("TODAY Checklist");

  display.init(115200);

  // Landscape orientation
  display.setRotation(1);

  drawChecklist();

  Serial.println("Display updated.");
}


// =====================================================
// LOOP
// =====================================================

void loop()
{
  // E-paper retains the image.
  // No continuous refresh required.

  delay(1000);
}