#include "display.h"
#include "config.h"


void LCDPrintLine(LiquidCrystal* display, uint8_t y, const char* value, uint8_t margin)
{
  display->setCursor(margin, y);

  uint8_t width = LCDWidth - (2 * margin);

  if (value != NULL)
  {
    uint8_t length = strlen(value);

    if (length >= width)
    {
      char* character = (char*)value;
      for (uint8_t i = 0; i < width; i++)
      {
        display->write(byte(*character));
        character++;
      }
    }
    else
    {
      display->print(value);
      width -= length;

      while (width > 0)
      {
        display->write(' ');
        width--;
      }
    }
  }
  else
  {
    for (uint8_t i = 0; i < width; i++)
      display->write(' ');
  }
}


void LCDPrintLineCentered(LiquidCrystal* display, uint8_t y, const char* value, uint8_t margin)
{
  display->setCursor(margin, y);

  uint8_t width = LCDWidth - (2 * margin);

  if (value != NULL)
  {
    uint8_t length = strlen(value);

    if (length >= width)
    {
      char* character = (char*)value;
      for (uint8_t i = 0; i < width; i++)
      {
        display->write(byte(*character));
        character++;
      }
    }
    else
    {
      uint8_t offset = (width - length) / 2;
      width -= offset;

      for (uint8_t i = 0; i < offset; i++)
        display->write(' ');

      display->print(value);
      width -= length;

      while (width > 0)
      {
        display->write(' ');
        width--;
      }
    }
  }
  else
  {
    for (uint8_t i = 0; i < width; i++)
      display->write(' ');
  }
}


const char* UniqueString(const char* value)
{
  char* result = new char[strlen(value) + 1];
  return strcpy(result, value);
}


#define ASCII0 0x30


const char* FormatTime(uint16_t time)
{
  uint16_t minutes = time / 60;
  uint8_t seconds = time % 60;

  char* value = new char[9];
  itoa(minutes, value, 10);

  uint8_t length = strlen(value);
  value[length] = ':'; length++;

  value[length] = (seconds / 10) + ASCII0; length++;
  value[length] = (seconds % 10) + ASCII0; length++;
  value[length] = 0;

  return value;
}


const char* FormatPercentage(uint8_t percentage)
{
  char* value = new char[6];


  itoa(percentage, value, 10);

  uint8_t length = strlen(value);
  value[length] = '%';
  value[length + 1] = 0;

  return value;
}


const char* FormatPercentageFixedWidth(uint8_t percentage)
{
  char* value = new char[5];

  if (percentage > 99)
  {
    value[0] = '1';
    value[1] = '0';
  }
  else
  {
    value[0] = ' ';
    value[1] = percentage > 9 ? (percentage / 10) + ASCII0 : ' ';
  }

  value[2] = (percentage % 10) + ASCII0;
  value[3] = '%';
  value[4] = 0;

  return value;
}