/*
  xdrv_52_3_berry_display.ino - Berry scripting language, native fucnctions

  Copyright (C) 2021 Stephan Hadinger, Berry language by Guan Wenliang https://github.com/Skiars/berry

  This program 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.

  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/


#ifdef USE_BERRY
#ifdef USE_DISPLAY

#include <berry.h>

#ifdef USE_UNIVERSAL_DISPLAY
Renderer *Init_uDisplay(const char *desc);
extern Renderer *renderer;
#endif //  USE_UNIVERSAL_DISPLAY

/*********************************************************************************************\
 * Native functions mapped to Berry functions
 * 
 * import display
 * display.start(string) -> comptr or nil if failed
 * 
\*********************************************************************************************/
int be_ntv_display_start(struct bvm *vm) {
#ifdef USE_UNIVERSAL_DISPLAY
  int32_t argc = be_top(vm); // Get the number of arguments
  if (argc >= 1 && be_isstring(vm, 1)) {
    const char * desc = be_tostring(vm, 1);
    // remove all objects on stack to avoid warnings in subsequent calls to Berry
    be_pop(vm, argc);
    Renderer * renderer = Init_uDisplay(desc);
    if (renderer) {
      be_pushcomptr(vm, renderer);
    } else {
      be_pushnil(vm);
    }
    be_return(vm);
  }
  be_raise(vm, kTypeError, nullptr);
#else // USE_UNIVERSAL_DISPLAY
  be_raise(vm, "internal_error", "universal display driver not present");
#endif // USE_UNIVERSAL_DISPLAY
}

// `display.dimmer([dim:int]) -> int` sets the dimmer of display, value 0..100. If `0` then turn off display. If no arg, read the current value.
int be_ntv_display_dimmer(struct bvm *vm) {
  int32_t argc = be_top(vm); // Get the number of arguments
  int32_t dimmer;
  if (argc >= 1) {
    if (!be_isint(vm, 1)) { be_raise(vm, "type_error", "arg must be int"); }
    dimmer = be_toint(vm, 1);
    if ((dimmer < 0) || (dimmer > 100)) { be_raise(vm, "value_error", "value must be in range 0..100"); }
    be_pop(vm, argc);   // clear stack to avoid ripple errors in code called later
    SetDisplayDimmer(dimmer);
    ApplyDisplayDimmer();
  }
  be_pushint(vm, GetDisplayDimmer());
  be_return(vm);
}

void be_ntv_display_touch_update(int32_t touches, int32_t raw_x, int32_t raw_y, int32_t gesture) {
#if defined(USE_LVGL_TOUCHSCREEN) || defined(USE_FT5206) || defined(USE_XPT2046) || defined(USE_LILYGO47) || defined(USE_TOUCH_BUTTONS)
  Touch_SetStatus(touches, raw_x, raw_y, gesture);
#endif
}

const char* be_ntv_display_driver_name(void) {
#ifdef USE_UNIVERSAL_DISPLAY
  if (renderer) {
    char* devname = renderer->devname();
    if (devname) {
      return devname;
    }
  }
#endif
  return "";
}

bool be_ntv_display_started(void) {
#ifdef USE_UNIVERSAL_DISPLAY
  if (renderer) {
    return true;
  }
#endif
  return false;
}

#endif // USE_DISPLAY
#endif  // USE_BERRY