#include "Tactility/service/gui/Gui.h"

#include "Tactility/app/AppInstance.h"
#include "Tactility/lvgl/LvglSync.h"
#include "Tactility/lvgl/Style.h"

#include <Tactility/Check.h>
#include <Tactility/Log.h>

namespace tt::service::gui {

#define TAG "gui"

static lv_obj_t* createAppViews(Gui* gui, lv_obj_t* parent) {
    lv_obj_send_event(gui->statusbarWidget, LV_EVENT_DRAW_MAIN, nullptr);
    lv_obj_t* child_container = lv_obj_create(parent);
    lv_obj_set_style_pad_all(child_container, 0, 0);
    lv_obj_set_width(child_container, LV_PCT(100));
    lv_obj_set_flex_grow(child_container, 1);

    if (softwareKeyboardIsEnabled()) {
        gui->keyboard = lv_keyboard_create(parent);
        lv_obj_add_flag(gui->keyboard, LV_OBJ_FLAG_HIDDEN);
    } else {
        gui->keyboard = nullptr;
    }

    return child_container;
}

lv_obj_tree_walk_res_t add_to_group(lv_obj_t * obj, void * user_data)
{
    lv_group_t *group = (lv_group_t*)user_data;
    TT_LOG_I(TAG, "walk");

    if (lv_obj_check_type(obj, &lv_button_class) ||
        lv_obj_check_type(obj, &lv_list_button_class) ||
        lv_obj_check_type(obj, &lv_textarea_class) ||
        lv_obj_check_type(obj, &lv_dropdown_class)) {
        lv_group_add_obj(group, obj);
    }
    return LV_OBJ_TREE_WALK_NEXT;
}

static void add_child_to_default_group(lv_event_t * e)
{
    lv_obj_t * child = (lv_obj_t *)lv_event_get_param(e);

    TT_LOG_I(TAG, "added %X", (unsigned)lv_obj_get_class(child));
    if (lv_obj_check_type(child, &lv_list_text_class)) {
        lv_obj_add_flag(child, LV_OBJ_FLAG_CLICKABLE);
        lv_obj_add_flag(child, LV_OBJ_FLAG_CLICK_FOCUSABLE);
        lv_obj_add_flag(child, LV_OBJ_FLAG_SCROLL_ON_FOCUS);
        lv_group_add_obj(lv_group_get_default(), child);
        TT_LOG_I(TAG, "listitem set");
    }
}

void redraw(Gui* gui) {
    assert(gui);

    // Lock GUI and LVGL
    lock();

    if (lvgl::lock(1000)) {
        lv_obj_clean(gui->appRootWidget);

        if (gui->appToRender != nullptr) {


            lv_group_t *group = lv_group_create();
            auto* indev = lv_indev_get_next(nullptr);
            while(indev) {
                TT_LOG_I(TAG, "Added indev %X", (unsigned)indev);
                lv_indev_set_group(indev, group);
                indev = lv_indev_get_next(indev);
            }
            lv_group_set_default(group);

            //lv_obj_add_flag(gui->appRootWidget, LV_OBJ_FLAG_SCROLL_CHAIN_VER);
            //lv_gridnav_add(gui->appRootWidget, (lv_gridnav_ctrl_t)(LV_GRIDNAV_CTRL_ROLLOVER | LV_GRIDNAV_CTRL_SCROLL_FIRST | LV_GRIDNAV_CTRL_VERTICAL_MOVE_ONLY));
            //lv_group_add_obj(group, gui->appRootWidget);

            app::Flags flags = std::static_pointer_cast<app::AppInstance>(gui->appToRender)->getFlags();
            if (flags.showStatusbar) {
                lv_obj_remove_flag(gui->statusbarWidget, LV_OBJ_FLAG_HIDDEN);
            } else {
                lv_obj_add_flag(gui->statusbarWidget, LV_OBJ_FLAG_HIDDEN);
            }

            lv_obj_t* container = createAppViews(gui, gui->appRootWidget);
            gui->appToRender->getApp()->onShow(*gui->appToRender, container);

            //lv_obj_tree_walk(container, add_to_group, group);

            //lv_obj_add_event_cb(gui->appRootWidget, add_child_to_default_group, LV_EVENT_CHILD_CREATED, NULL);

        } else {
            TT_LOG_W(TAG, "nothing to draw");
        }

        // Unlock GUI and LVGL
        lvgl::unlock();
    } else {
        TT_LOG_E(TAG, LOG_MESSAGE_MUTEX_LOCK_FAILED_FMT, "LVGL");
    }

    unlock();
}

} // namespace