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use std::ffi::CStr;
use {Authenticate, CommandError, CommandStatus, Config, Device};
use tests::util::{Target, ADMIN_PASSWORD, USER_PASSWORD};

static ADMIN_NEW_PASSWORD: &str = "1234567890";
static USER_NEW_PASSWORD: &str = "abcdefghij";

#[test]
#[cfg_attr(not(feature = "test-no-device"), ignore)]
fn connect_no_device() {
    assert!(::connect().is_err());
    assert!(::Pro::connect().is_err());
    assert!(::Storage::connect().is_err());
}

#[test]
#[cfg_attr(not(feature = "test-pro"), ignore)]
fn connect_pro() {
    assert!(::connect().is_ok());
    assert!(::Pro::connect().is_ok());
    assert!(::Storage::connect().is_err());
}

#[test]
#[cfg_attr(not(feature = "test-storage"), ignore)]
fn connect_storage() {
    assert!(::connect().is_ok());
    assert!(::Pro::connect().is_err());
    assert!(::Storage::connect().is_ok());
}

fn assert_empty_serial_number() {
    unsafe {
        let ptr = ::nitrokey_sys::NK_device_serial_number();
        assert!(!ptr.is_null());
        let cstr = CStr::from_ptr(ptr);
        assert_eq!(cstr.to_string_lossy(), "");
    }
}

#[test]
#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
fn disconnect() {
    Target::connect().unwrap();
    assert_empty_serial_number();
    Target::connect()
        .unwrap()
        .authenticate_admin(ADMIN_PASSWORD)
        .unwrap();
    assert_empty_serial_number();
    Target::connect()
        .unwrap()
        .authenticate_user(USER_PASSWORD)
        .unwrap();
    assert_empty_serial_number();
}

#[test]
#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
fn get_serial_number() {
    let device = Target::connect().unwrap();
    let result = device.get_serial_number();
    assert!(result.is_ok());
    let serial_number = result.unwrap();
    assert!(serial_number.is_ascii());
    assert!(serial_number.chars().all(|c| c.is_ascii_hexdigit()));
}
#[test]
#[cfg_attr(not(feature = "test-pro"), ignore)]
// TODO: adapt for storage
fn get_firmware_version() {
    let device = Target::connect().unwrap();
    assert_eq!(0, device.get_major_firmware_version());
    let minor = device.get_minor_firmware_version();
    assert!(minor == 7 || minor == 8);
}

fn admin_retry<T: Authenticate + Device>(device: T, suffix: &str, count: u8) -> T {
    let result = device.authenticate_admin(&(ADMIN_PASSWORD.to_owned() + suffix));
    let device = match result {
        Ok(admin) => admin.device(),
        Err((device, _)) => device,
    };
    assert_eq!(count, device.get_admin_retry_count());
    return device;
}

fn user_retry<T: Authenticate + Device>(device: T, suffix: &str, count: u8) -> T {
    let result = device.authenticate_user(&(USER_PASSWORD.to_owned() + suffix));
    let device = match result {
        Ok(admin) => admin.device(),
        Err((device, _)) => device,
    };
    assert_eq!(count, device.get_user_retry_count());
    return device;
}

#[test]
#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
fn get_retry_count() {
    let device = Target::connect().unwrap();

    let device = admin_retry(device, "", 3);
    let device = admin_retry(device, "123", 2);
    let device = admin_retry(device, "456", 1);
    let device = admin_retry(device, "", 3);

    let device = user_retry(device, "", 3);
    let device = user_retry(device, "123", 2);
    let device = user_retry(device, "456", 1);
    user_retry(device, "", 3);
}

#[test]
#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
fn config() {
    let device = Target::connect().unwrap();
    let admin = device.authenticate_admin(ADMIN_PASSWORD).unwrap();
    let config = Config::new(None, None, None, true);
    assert_eq!(CommandStatus::Success, admin.write_config(config));
    let get_config = admin.get_config().unwrap();
    assert_eq!(config, get_config);

    let config = Config::new(None, Some(9), None, true);
    assert_eq!(
        CommandStatus::Error(CommandError::InvalidSlot),
        admin.write_config(config)
    );

    let config = Config::new(Some(1), None, Some(0), false);
    assert_eq!(CommandStatus::Success, admin.write_config(config));
    let get_config = admin.get_config().unwrap();
    assert_eq!(config, get_config);

    let config = Config::new(None, None, None, false);
    assert_eq!(CommandStatus::Success, admin.write_config(config));
    let get_config = admin.get_config().unwrap();
    assert_eq!(config, get_config);
}

#[test]
#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
fn change_user_pin() {
    let device = Target::connect().unwrap();
    let device = device.authenticate_user(USER_PASSWORD).unwrap().device();
    let device = device.authenticate_user(USER_NEW_PASSWORD).unwrap_err().0;

    let result = device.change_user_pin(USER_PASSWORD, USER_NEW_PASSWORD);
    assert_eq!(CommandStatus::Success, result);

    let device = device.authenticate_user(USER_PASSWORD).unwrap_err().0;
    let device = device
        .authenticate_user(USER_NEW_PASSWORD)
        .unwrap()
        .device();

    let result = device.change_user_pin(USER_PASSWORD, USER_PASSWORD);
    assert_eq!(CommandStatus::Error(CommandError::WrongPassword), result);

    let result = device.change_user_pin(USER_NEW_PASSWORD, USER_PASSWORD);
    assert_eq!(CommandStatus::Success, result);

    let device = device.authenticate_user(USER_PASSWORD).unwrap().device();
    device.authenticate_user(USER_NEW_PASSWORD).unwrap_err();
}

#[test]
#[cfg_attr(not(any(feature = "test-pro", feature = "test-storage")), ignore)]
fn change_admin_pin() {
    let device = Target::connect().unwrap();
    let device = device.authenticate_admin(ADMIN_PASSWORD).unwrap().device();
    let device = device.authenticate_admin(ADMIN_NEW_PASSWORD).unwrap_err().0;

    let result = device.change_admin_pin(ADMIN_PASSWORD, ADMIN_NEW_PASSWORD);
    assert_eq!(CommandStatus::Success, result);

    let device = device.authenticate_admin(ADMIN_PASSWORD).unwrap_err().0;
    let device = device
        .authenticate_admin(ADMIN_NEW_PASSWORD)
        .unwrap()
        .device();

    let result = device.change_admin_pin(ADMIN_PASSWORD, ADMIN_PASSWORD);
    assert_eq!(CommandStatus::Error(CommandError::WrongPassword), result);

    let result = device.change_admin_pin(ADMIN_NEW_PASSWORD, ADMIN_PASSWORD);
    assert_eq!(CommandStatus::Success, result);

    let device = device.authenticate_admin(ADMIN_PASSWORD).unwrap().device();
    device.authenticate_admin(ADMIN_NEW_PASSWORD).unwrap_err();
}