use std::thread;
use std::time::Duration;

use ft260hid::device;
use ft260hid::io::gpio::{Dir, Group, Pin, Val};
use serial_test::serial;

#[test]
#[serial]
fn read_value() {
    let dev = device::open(0).unwrap();
    let gpio = dev.gpio();
    assert!(gpio.enable_pin(Group::Gpio_B_C_D_E_F_H).is_ok());
    assert!(gpio.set_dir(Pin::GpioB, Dir::Out).is_ok()); // RTS / GPIOB
    assert!(gpio.set_dir(Pin::GpioE, Dir::In).is_ok()); // CTS / GPIOE
    assert!(gpio.set_dir(Pin::GpioC, Dir::In).is_ok()); // RXD / GPIOC
    assert!(gpio.set_dir(Pin::GpioD, Dir::Out).is_ok()); // TXD / GPIOD

    let in_out = [(Pin::GpioC, Pin::GpioD), (Pin::GpioE, Pin::GpioB)];
    let delay = Duration::from_millis(1);

    for io in in_out {
        let hi_lo = [Val::High, Val::Low];
        for v in hi_lo {
            thread::sleep(delay);
            assert!(gpio.write(io.1, v).is_ok());
            thread::sleep(delay);
            let res = gpio.read(io.1); // read out
            assert!(res.is_ok());
            assert_eq!(res.unwrap(), v);
            let res = gpio.read(io.0); // read in
            assert!(res.is_ok());
            assert_eq!(res.unwrap(), v);
        }
    }

    // Try to monitor actual wave form
    assert!(gpio.enable_pin(Group::Gpio_0_1).is_ok());
    assert!(gpio.set_dir(Pin::Gpio0, Dir::Out).is_ok()); // SCL / GPIO0
    assert!(gpio.set_dir(Pin::Gpio1, Dir::Out).is_ok()); // SDA / GPIO1
    assert!(gpio.write(Pin::Gpio0, Val::Low).is_ok());
    assert!(gpio.write(Pin::Gpio1, Val::Low).is_ok());
    thread::sleep(delay);
    assert!(gpio.write(Pin::Gpio0, Val::High).is_ok());
    thread::sleep(delay);
    assert!(gpio.write(Pin::Gpio1, Val::High).is_ok());
    thread::sleep(delay);
    assert!(gpio.write(Pin::Gpio0, Val::Low).is_ok());
    thread::sleep(delay);
    assert!(gpio.write(Pin::Gpio1, Val::Low).is_ok());
    thread::sleep(delay);

    assert!(gpio.set_dir(Pin::Gpio0, Dir::In).is_ok()); // SCL / GPIO0
    assert!(gpio.set_dir(Pin::Gpio1, Dir::In).is_ok()); // SDA / GPIO1
    assert!(gpio.set_pull_up(Pin::Gpio0).is_ok());
    thread::sleep(delay);
    assert!(gpio.set_pull_up(Pin::Gpio1).is_ok());
    thread::sleep(delay);
    assert!(gpio.set_pull_down(Pin::Gpio0).is_ok());
    thread::sleep(delay);
    assert!(gpio.set_pull_down(Pin::Gpio1).is_ok());
    thread::sleep(delay);
}