/*
 * Modular Double-Height Parola Demo
 * Based on "Parola_Double_Height" example by MajicDesigns (LGPL‑2.1).
 * Refactored and localised by <Nama Anda>, June 2025.
 */

#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>
#include "Font_Data.h"

// ----------------- Pin & Hardware config -----------------
#define MATRIX_TYPE MD_MAX72XX::PAROLA_HW
#define DM_CS_PIN   10

// ----------------- Display topology -----------------
constexpr uint8_t NUM_ZONES      = 2;
constexpr uint8_t MODULES_PER_ZN = 4;
constexpr uint8_t NUM_MODULES    = NUM_ZONES * MODULES_PER_ZN;
constexpr uint8_t ZN_BOTTOM      = 0;
constexpr uint8_t ZN_TOP         = 1;

// ----------------- Animation parameters --------------
constexpr uint16_t ANIM_SPEED  = 50;   // ms per frame
constexpr uint16_t HOLD_TIME   = 0;    // ms pause when finished

// ----------------- Compile‑time options --------------
#define ENABLE_DEBUG  1
//#define FLIP_TOP_ZONE   // uncomment to invert top zone

// ----------------- Parola object -----------------
MD_Parola matrix = MD_Parola(MATRIX_TYPE, DM_CS_PIN, NUM_MODULES);

// ----------------- Message list -----------------
const char* const kTextQueue[] PROGMEM = {
  "Peraga dobel modul, 2 font, 2 zone",
  "Zona 0 = bagian bawah",
  "Zona 1 = bagian atas",
  "BIG",
  "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
  "abcdefghijklmnopqrstuvwxyz",
  "0123456789",
  "`!@#$%^&*()_+-={};:'\"<>?,./|\\{}",
};
constexpr uint8_t kTextCount = sizeof(kTextQueue) / sizeof(kTextQueue[0]);

// ----------------- State variables -----------------
uint8_t currentMsg = 0;

// ====================================================
//  Utility & setup functions
// ====================================================

void initSerial()
{
#if ENABLE_DEBUG
  Serial.begin(57600);
  Serial.println(F("[Parola Modular Demo]"));
#endif
}

void initDisplay()
{
  matrix.begin(NUM_ZONES);

  // Define each zone range
  matrix.setZone(ZN_BOTTOM, 0, MODULES_PER_ZN - 1);
  matrix.setZone(ZN_TOP,    MODULES_PER_ZN, NUM_MODULES - 1);

  // Set default fonts
  matrix.setFont(ZN_BOTTOM, BigFontLower);
  matrix.setFont(ZN_TOP,    BigFontUpper);

  // Double char spacing for double‑height look
  matrix.setCharSpacing(matrix.getCharSpacing() * 2);

#ifdef FLIP_TOP_ZONE
  matrix.setZoneEffect(ZN_TOP, true, PA_FLIP_UD);
  matrix.setZoneEffect(ZN_TOP, true, PA_FLIP_LR);
#endif
}

// ====================================================
//  Animation helpers
// ====================================================

void displayMessage(uint8_t idx)
{
  const __FlashStringHelper* txt = (const __FlashStringHelper*)pgm_read_ptr(&kTextQueue[idx]);

  switch (idx)
  {
    default:   // 0,4,5,6,7
      matrix.setFont(ZN_BOTTOM, BigFontLower);
      matrix.setFont(ZN_TOP,    BigFontUpper);
#ifdef FLIP_TOP_ZONE
      matrix.displayZoneText(ZN_BOTTOM, txt, PA_LEFT,  ANIM_SPEED, HOLD_TIME, PA_SCROLL_LEFT,  PA_SCROLL_LEFT);
      matrix.displayZoneText(ZN_TOP,    txt, PA_LEFT,  ANIM_SPEED, HOLD_TIME, PA_SCROLL_RIGHT, PA_SCROLL_RIGHT);
#else
      matrix.displayZoneText(ZN_BOTTOM, txt, PA_RIGHT, ANIM_SPEED, HOLD_TIME, PA_SCROLL_LEFT,  PA_SCROLL_LEFT);
      matrix.displayZoneText(ZN_TOP,    txt, PA_LEFT,  ANIM_SPEED, HOLD_TIME, PA_SCROLL_LEFT,  PA_SCROLL_LEFT);
#endif
    break;

    case 1:
      matrix.setFont(ZN_BOTTOM, nullptr);       // normal font
      matrix.setFont(ZN_TOP,    BigFontUpper);  // big top
      matrix.displayZoneText(ZN_BOTTOM, txt,    PA_CENTER, ANIM_SPEED, HOLD_TIME, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
      matrix.displayZoneText(ZN_TOP,    F("BIG"), PA_CENTER, ANIM_SPEED, HOLD_TIME, PA_PRINT,       PA_NO_EFFECT);
    break;

    case 2:
      matrix.setFont(ZN_BOTTOM, BigFontLower);
      matrix.setFont(ZN_TOP,    nullptr);
      matrix.displayZoneText(ZN_BOTTOM, F("BIG"), PA_CENTER, ANIM_SPEED, HOLD_TIME, PA_PRINT, PA_NO_EFFECT);
#ifdef FLIP_TOP_ZONE
      matrix.displayZoneText(ZN_TOP, txt, PA_CENTER, ANIM_SPEED, HOLD_TIME, PA_SCROLL_RIGHT, PA_SCROLL_RIGHT);
#else
      matrix.displayZoneText(ZN_TOP, txt, PA_CENTER, ANIM_SPEED, HOLD_TIME, PA_SCROLL_LEFT,  PA_SCROLL_LEFT);
#endif
    break;

    case 3:
      matrix.setFont(ZN_BOTTOM, BigFontLower);
      matrix.setFont(ZN_TOP,    BigFontUpper);
      matrix.displayZoneText(ZN_BOTTOM, txt, PA_CENTER, ANIM_SPEED, 2000, PA_PRINT, PA_NO_EFFECT);
      matrix.displayZoneText(ZN_TOP,    txt, PA_CENTER, ANIM_SPEED, 2000, PA_PRINT, PA_NO_EFFECT);
    break;
  }
}

void nextMessage()
{
  currentMsg = (currentMsg + 1) % kTextCount;
  matrix.displayClear();
  matrix.synchZoneStart();
  displayMessage(currentMsg);
}

// ====================================================
//  Arduino main
// ====================================================
void setup()
{
  initSerial();
  initDisplay();
  displayMessage(currentMsg);
}

void loop()
{
  matrix.displayAnimate();

  if (matrix.getZoneStatus(ZN_BOTTOM) && matrix.getZoneStatus(ZN_TOP))
  {
#if ENABLE_DEBUG
    Serial.print(F("Finished msg #")); Serial.println(currentMsg);
#endif
    nextMessage();
  }
}