/*
 *  © 2021, Chris Harlow, Neil McKechnie. All rights reserved.
 *
 *  This file is part of CommandStation-EX
 *
 *  This is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  It is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with CommandStation.  If not, see <https://www.gnu.org/licenses/>.
 */

// OLED Implementation of LCDDisplay class
// Note: this file is optionally included by LCD_Implementation.h
// It is NOT a .cpp file to prevent it being compiled and demanding libraries
// even when not needed.

#include "I2CManager.h"
#include "SSD1306Ascii.h"
SSD1306AsciiWire LCDDriver;

// DEVICE SPECIFIC LCDDisplay Implementation for OLED

LCDDisplay::LCDDisplay() {
  // Scan for device on 0x3c and 0x3d.
  I2CManager.begin();
  I2CManager.setClock(400000L);  // Set max supported I2C speed
  for (byte address = 0x3c; address <= 0x3d; address++) {
    if (I2CManager.exists(address)) {
      // Device found
      DIAG(F("\nOLED display found at 0x%x"), address);
      interfake(OLED_DRIVER, 0);
      const DevType *devType;
      if (lcdCols == 132)
        devType = &SH1106_128x64;  // Actually 132x64 but treated as 128x64
      else if (lcdCols == 128 && lcdRows == 4)
        devType = &Adafruit128x32;
      else
        devType = &Adafruit128x64;
      LCDDriver.begin(devType, address);
      lcdDisplay = this;
      LCDDriver.setFont(System5x7);  // Normal 1:1 pixel scale, 8 bits high
      clear();
      return;
    }
  }
  DIAG(F("OLED display not found"));
}

void LCDDisplay::interfake(int p1, int p2, int p3) {
  lcdCols = p1;
  lcdRows = p2 / 8;
  (void)p3;
}

void LCDDisplay::clearNative() { LCDDriver.clear(); }

void LCDDisplay::setRowNative(byte row) {
  // Positions text write to start of row 1..n
  int y = row;
  LCDDriver.setCursor(0, y);
}

void LCDDisplay::writeNative(char b) { LCDDriver.write(b); }

void LCDDisplay::displayNative() {}