#include "App.hpp"

#include <cassert>

#include <EGL/egl.h>
#include <GLES3/gl3.h>
#include <raylib.h>
#include <rlgl.h>
#include <xkbcommon/xkbcommon.h>

#include <optional>

namespace Waylight {

auto App::tick() -> void
{
	static std::pmr::string text_input_data {};

	m_ime.bound_text = &text_input_data;
	m_ime.bound_id = 1;
	process_pending_text_input();

	if (!m_visible || m_gl.edpy == EGL_NO_DISPLAY
	    || m_gl.esurf == EGL_NO_SURFACE)
		return;

	glViewport(0, 0, m_win_w, m_win_h);

	if (m_kbd.is_sym_pressed(XKB_KEY_Escape)) {
		set_visible(!visible());
		if (m_kbd.ctrl() && m_kbd.shift()) {
			m_running = false;
		}
	}

	BeginDrawing();

	ClearBackground(theme().window.background);

	{
		assert(m_gui);

		m_gui->style().preedit_color = theme().foreground_preedit;
		m_gui->style().text_color = theme().foreground;
		m_gui->style().selection_color = m_accent_color;
		m_gui->style().selection_text_color = WHITE;

		u32 rune { 0 };
		if (!m_kbd.typing.empty()) {
			rune = m_kbd.typing.back();
			m_kbd.typing.clear();
		}
		ImGuiGuard gui_scope(m_gui, rune, m_kbd.ctrl(), m_kbd.shift(),
		    clipboard(),
		    [this](std::string_view const &str) { clipboard(str); });

		Rectangle const input_rect {
			0.0f,
			0.0f,
			static_cast<float>(GetScreenWidth()),
			static_cast<float>(GetScreenHeight()),
		};
		;
		if (auto const result
		    = m_gui->text_input(1, text_input_data, input_rect);
		    result.test(1)) {
			m_ime.surrounding_dirty = true;
		} else if (result.test(0)) {
			if (text_input_data == "kitty") {
				execute_command(false, "kitty");
			} else if (text_input_data == "nvim") {
				execute_command(true, "nvim");
			}

			text_input_data = "";
		}

		update_text_input_state(text_input_data, 1, input_rect);
	}

	DrawTexture(m_ir.lookup("folder", 48).texture(), 48, 48, WHITE);

	EndDrawing();

	eglSwapBuffers(m_gl.edpy, m_gl.esurf);
}

} // namespace Waylight