use super::IStdout;
use kernel::windows_kernel::{handle, kernel, writing};
use winapi::um::wincon::ENABLE_PROCESSED_OUTPUT;
use winapi::um::winnt::HANDLE;

use std::ptr::NonNull;
use std::any::Any;
use std::io::{self, Write};
use std::sync::Arc;

/// This struct is an WINAPI implementation for screen related actions.
pub struct WinApiStdout {
    pub handle: HANDLE,
}

impl IStdout for WinApiStdout {

    fn write_str(&self, string: &str) -> io::Result<usize> {
        self.write(string.as_bytes())
    }

    fn write(&self, buf: &[u8]) -> io::Result<usize> {
        writing::write_char_buffer(&self.handle, buf)
    }

    fn flush(&self) -> io::Result<()> {
        Ok(())
    }

    fn as_any(&self) -> &Any {
        self
    }

    fn as_any_mut(&mut self) -> &mut Any {
        self
    }
}

impl WinApiStdout {
    pub fn new() -> Self {
        WinApiStdout { handle: handle::get_output_handle().unwrap() }
    }

    pub fn set(&mut self, handle: HANDLE)
    {
        self.handle = handle;
    }

    pub fn get_handle(&self) -> &HANDLE
    {
        return &self.handle;
    }
}

unsafe impl Send for WinApiStdout {}