/**
 * @file TextInput.cpp
 * @author apio (cloudapio.eu)
 * @brief Base class for text inputs.
 *
 * @copyright Copyright (c) 2024, the Luna authors.
 *
 */

#include <ui/App.h>
#include <ui/TextInput.h>

namespace ui
{
    TextInput::TextInput(Window* window, Widget* parent) : Widget(window, parent)
    {
        m_cursor_timer = os::Timer::create_repeating(500, [this]() { this->tick_cursor(); }).release_value();
    }

    void TextInput::update_cursor()
    {
        m_cursor_timer->restart();
        m_cursor_activated = true;
    }

    Result<void> TextInput::delete_current_character()
    {
        usize size = m_data.size() - m_cursor;
        u8* slice = TRY(m_data.slice(m_cursor, size));
        memmove(slice, slice + 1, size - 1);
        TRY(m_data.try_resize(m_data.size() - 1));

        return {};
    }

    Result<void> TextInput::insert_character(char c)
    {
        usize size = m_data.size() - m_cursor;
        u8* slice = TRY(m_data.slice(m_cursor, size + 1));
        memmove(slice + 1, slice, size);
        *slice = (u8)c;

        return {};
    }

    void TextInput::tick_cursor()
    {
        m_cursor_activated = !m_cursor_activated;

        window()->draw();
    }
}