#include <pebble.h>
#include "battery.h"
#include "constants.h"
#include "analog_wd.h"

extern Options s_options;

//adds/configures display battery line
void add_battery_layer(Layer *window_layer, int16_t width, int16_t height) {
  
  GFont battery_font;
  int battery_Y_readability_offset = 0;
  int battery_X_hour_digits_offset = 0;
  
  if (s_options.readability) {
    battery_Y_readability_offset = DEFAULT_BATTERY_OFFSET_READABILITY;
    battery_font = fonts_get_system_font(FONT_KEY_GOTHIC_24);
  }
  else {
    battery_font = fonts_get_system_font(FONT_KEY_GOTHIC_18);
  }
  
  if (s_options.display_hour_digits) {
    battery_X_hour_digits_offset = DEFAULT_BATTERY_OFFSET_HOUR_DIGITS;
  }

  battery_layer = text_layer_create(GRect(17 + battery_X_hour_digits_offset, (height / 2) - 12 - battery_Y_readability_offset, width, 28));
  text_layer_set_text_alignment(battery_layer, GTextAlignmentLeft);
  init_static_row(battery_layer, battery_font);
  layer_add_child(window_layer, text_layer_get_layer(battery_layer));
}

//checks/updates date display line
void update_battery_layer() {
  static char battery_buffer[16];
  const char *current_battery_layer;
  
  //if displaying battery
  if (s_options.display_battery) {
    
    //get current date_layer text
    current_battery_layer = text_layer_get_text(battery_layer);

    //get battery percent
    snprintf(battery_buffer, sizeof("100%"), "%d%%", battery_state_service_peek().charge_percent);
    
    if (current_battery_layer != battery_buffer) {
      text_layer_set_text(battery_layer, battery_buffer);
    }
  }
  else {
    text_layer_set_text(battery_layer, "");
  }
  #if DEBUG
  APP_LOG(APP_LOG_LEVEL_DEBUG, "update_battery_layer: text_layer_set_text battery_layer: %s", battery_buffer);
  #endif
}