#include <Tactility/lvgl/Lvgl.h>
#include <Tactility/settings/DisplaySettings.h>

#include <lvgl/fonts.h>
#include <lvgl/lvgl.h>

namespace tt::lvgl {

void applyFontSize(settings::display::FontSize fontSize) {
    LvglFontScale scale;
    switch (fontSize) {
        using enum settings::display::FontSize;
        case Small:
            scale = FONT_SCALE_SMALL;
            break;
        case Large:
            scale = FONT_SCALE_LARGE;
            break;
        case Default:
        default:
            scale = FONT_SCALE_DEFAULT;
            break;
    }

    lvgl_set_text_font_scale(scale);
    const lv_font_t* font = lvgl_get_text_font(FONT_SIZE_DEFAULT);

    for (lv_display_t* display = lv_display_get_next(nullptr);
         display != nullptr;
         display = lv_display_get_next(display)) {
#if LV_USE_THEME_DEFAULT
        if (lv_display_get_theme(display) == lv_theme_default_get()) {
            lv_obj_t* screen = lv_display_get_screen_active(display);
            lv_theme_default_init(
                display,
                lv_theme_get_color_primary(screen),
                lv_theme_get_color_secondary(screen),
                LV_THEME_DEFAULT_DARK,
                font
            );
        }
#endif
        // The display layers are independent inheritance roots. Updating all of them makes
        // the new size visible immediately in regular screens, overlays, and the status bar.
        lv_obj_set_style_text_font(lv_display_get_screen_active(display), font, LV_PART_MAIN);
        lv_obj_set_style_text_font(lv_display_get_layer_top(display), font, LV_PART_MAIN);
        lv_obj_set_style_text_font(lv_display_get_layer_sys(display), font, LV_PART_MAIN);
        lv_obj_set_style_text_font(lv_display_get_layer_bottom(display), font, LV_PART_MAIN);
    }
}

} // namespace tt::lvgl