#include "gtest/gtest.h"
#include "tkc/mem.h"
#include "widgets/button.h"
#include "base/widget_factory.h"

typedef struct _custom_widget_t {
  widget_t base;
} custom_widget_t;

static const widget_vtable_t s_custom_vtable = {};
widget_t* custom_widget_create(widget_t* parent, xy_t x, xy_t y, wh_t w, wh_t h) {
  widget_t* widget = NULL;
  custom_widget_t* c = TKMEM_ZALLOC(custom_widget_t);
  return_value_if_fail(c != NULL, NULL);

  widget = WIDGET(c);
  widget_init(widget, parent, &s_custom_vtable, x, y, w, h);

  return widget;
}

TEST(WidgetFactory, button) {
  widget_t* button = NULL;
  widget_factory_t* factory = widget_factory_create();

  widget_factory_register(factory, "button", button_create);
  button = widget_factory_create_widget(factory, "button", NULL, 10, 20, 30, 40);
  ASSERT_EQ(button != NULL, true);
  ASSERT_EQ(button->x, 10);
  ASSERT_EQ(button->y, 20);
  ASSERT_EQ(button->w, 30);
  ASSERT_EQ(button->h, 40);

  widget_destroy(button);
  widget_factory_destroy(factory);
}

TEST(WidgetFactory, custom) {
  widget_t* custom = NULL;
  widget_factory_t* factory = widget_factory_create();

  custom = widget_factory_create_widget(factory, "custom", NULL, 10, 20, 30, 40);
  ASSERT_EQ(custom, WIDGET(NULL));

  widget_factory_register(factory, "custom", custom_widget_create);
  custom = widget_factory_create_widget(factory, "custom", NULL, 10, 20, 30, 40);
  ASSERT_EQ(custom != NULL, true);
  ASSERT_EQ(custom->x, 10);
  ASSERT_EQ(custom->y, 20);
  ASSERT_EQ(custom->w, 30);
  ASSERT_EQ(custom->h, 40);

  widget_destroy(custom);
  widget_factory_destroy(factory);
}

TEST(WidgetFactory, over_write) {
  widget_t* custom = NULL;
  widget_factory_t* factory = widget_factory_create();

  widget_factory_register(factory, "button", button_create);
  widget_factory_register(factory, "button", custom_widget_create);
  custom = widget_factory_create_widget(factory, "button", NULL, 10, 20, 30, 40);

  ASSERT_EQ(custom->vt, &s_custom_vtable);

  widget_destroy(custom);
  widget_factory_destroy(factory);
}

static ret_t on_widget_created(void* ctx, event_t* e) {
  widget_t* widget = WIDGET(e->target);
  *(int32_t*)ctx = (*(int32_t*)ctx) + 1;

  assert(tk_str_eq(widget->vt->type, WIDGET_TYPE_BUTTON));

  return RET_OK;
}

TEST(WidgetFactory, event) {
  int32_t count = 0;
  widget_t* button = NULL;
  widget_factory_t* factory = widget_factory_create();

  widget_factory_register(factory, "button", button_create);
  emitter_on(EMITTER(factory), EVT_WIDGET_CREATED, on_widget_created, &count);

  button = widget_factory_create_widget(factory, "button", NULL, 10, 20, 30, 40);
  ASSERT_EQ(count, 1);
  widget_destroy(button);

  button = widget_factory_create_widget(factory, "button", NULL, 10, 20, 30, 40);
  ASSERT_EQ(count, 2);
  widget_destroy(button);

  widget_factory_destroy(factory);
}