// Copyright 2015, Igor Shaula
// Licensed under the MIT License <LICENSE or
// http://opensource.org/licenses/MIT>. This file
// may not be copied, modified, or distributed
// except according to those terms.
#[macro_use]
extern crate serde_derive;
extern crate winreg;
use winreg::enums::*;

#[derive(Debug, Serialize, Deserialize, PartialEq)]
struct Coords {
    x: u32,
    y: u32,
}

#[derive(Debug, Serialize, Deserialize, PartialEq)]
struct Size {
    w: u32,
    h: u32,
}

#[derive(Debug, Serialize, Deserialize, PartialEq)]
struct Rectangle {
    coords: Coords,
    size: Size,
}

#[derive(Debug, Serialize, Deserialize, PartialEq)]
struct Test {
    t_bool: bool,
    t_u8: u8,
    t_u16: u16,
    t_u32: u32,
    t_u64: u64,
    t_usize: usize,
    t_struct: Rectangle,
    t_string: String,
    t_i8: i8,
    t_i16: i16,
    t_i32: i32,
    t_i64: i64,
    t_isize: isize,
    t_f64: f64,
    t_f32: f32,
    // t_char: char,
}

fn main() {
    let hkcu = winreg::RegKey::predef(HKEY_CURRENT_USER);
    let key = hkcu.create_subkey("Software\\RustEncode").unwrap();
    let v1 = Test{
        t_bool: false,
        t_u8: 127,
        t_u16: 32768,
        t_u32: 123456789,
        t_u64: 123456789101112,
        t_usize: 1234567891,
        t_struct: Rectangle{
            coords: Coords{ x: 55, y: 77 },
            size: Size{ w: 500, h: 300 },
        },
        t_string: "test 123!".to_owned(),
        t_i8: -123,
        t_i16: -2049,
        t_i32: 20100,
        t_i64: -12345678910,
        t_isize: -1234567890,
        t_f64: -0.01,
        t_f32: 3.14,
        // t_char: 'a',
    };

    key.encode(&v1).unwrap();

    let v2: Test = key.decode().unwrap();
    println!("Decoded {:?}", v2);

    // This shows `false` because f32 and f64 encoding/decoding is NOT precise
    println!("Equal to encoded: {:?}", v1 == v2);
}