extern crate regex;

use self::regex::Regex;
use crate::common::util::*;
#[cfg(all(unix, not(target_os = "macos")))]
use rust_users::*;

#[test]
fn test_date_email() {
    new_ucmd!().arg("--rfc-email").succeeds();
}

#[test]
fn test_date_email2() {
    new_ucmd!().arg("-R").succeeds();
}

#[test]
fn test_date_rfc_3339() {
    let scene = TestScenario::new(util_name!());

    let rfc_regexp = concat!(
        r#"(\d+)-(0[1-9]|1[012])-(0[1-9]|[12]\d|3[01])\s([01]\d|2[0-3]):"#,
        r#"([0-5]\d):([0-5]\d|60)(\.\d+)?(([Zz])|([\+|\-]([01]\d|2[0-3])))"#
    );
    let re = Regex::new(rfc_regexp).unwrap();

    // Check that the output matches the regexp
    scene
        .ucmd()
        .arg("--rfc-3339=ns")
        .succeeds()
        .stdout_matches(&re);

    scene
        .ucmd()
        .arg("--rfc-3339=seconds")
        .succeeds()
        .stdout_matches(&re);
}

#[test]
fn test_date_rfc_8601() {
    new_ucmd!().arg("--iso-8601=ns").succeeds();
}

#[test]
fn test_date_rfc_8601_second() {
    new_ucmd!().arg("--iso-8601=second").succeeds();
}

#[test]
fn test_date_utc() {
    new_ucmd!().arg("--utc").succeeds();
}

#[test]
fn test_date_universal() {
    new_ucmd!().arg("--universal").succeeds();
}

#[test]
fn test_date_format_y() {
    let scene = TestScenario::new(util_name!());

    let mut re = Regex::new(r"^\d{4}$").unwrap();
    scene.ucmd().arg("+%Y").succeeds().stdout_matches(&re);

    re = Regex::new(r"^\d{2}$").unwrap();
    scene.ucmd().arg("+%y").succeeds().stdout_matches(&re);
}

#[test]
fn test_date_format_m() {
    let scene = TestScenario::new(util_name!());

    let mut re = Regex::new(r"\S+").unwrap();
    scene.ucmd().arg("+%b").succeeds().stdout_matches(&re);

    re = Regex::new(r"^\d{2}$").unwrap();
    scene.ucmd().arg("+%m").succeeds().stdout_matches(&re);
}

#[test]
fn test_date_format_day() {
    let scene = TestScenario::new(util_name!());

    let mut re = Regex::new(r"\S+").unwrap();
    scene.ucmd().arg("+%a").succeeds().stdout_matches(&re);

    re = Regex::new(r"\S+").unwrap();
    scene.ucmd().arg("+%A").succeeds().stdout_matches(&re);

    re = Regex::new(r"^\d{1}$").unwrap();
    scene.ucmd().arg("+%u").succeeds().stdout_matches(&re);
}

#[test]
fn test_date_format_full_day() {
    let re = Regex::new(r"\S+ \d{4}-\d{2}-\d{2}").unwrap();
    new_ucmd!()
        .arg("+'%a %Y-%m-%d'")
        .succeeds()
        .stdout_matches(&re);
}

#[test]
fn test_date_nano_seconds() {
    // %N     nanoseconds (000000000..999999999)
    let re = Regex::new(r"^\d{1,9}$").unwrap();
    new_ucmd!().arg("+%N").succeeds().stdout_matches(&re);
}

#[test]
fn test_date_format_without_plus() {
    // [+FORMAT]
    new_ucmd!()
        .arg("%s")
        .fails()
        .stderr_contains("date: invalid date ‘%s’")
        .code_is(1);
}

#[test]
fn test_date_format_literal() {
    new_ucmd!().arg("+%%s").succeeds().stdout_is("%s\n");
    new_ucmd!().arg("+%%N").succeeds().stdout_is("%N\n");
}

#[test]
#[cfg(all(unix, not(target_os = "macos")))]
fn test_date_set_valid() {
    if get_effective_uid() == 0 {
        new_ucmd!()
            .arg("--set")
            .arg("2020-03-12 13:30:00+08:00")
            .succeeds()
            .no_stdout()
            .no_stderr();
    }
}

#[test]
#[cfg(any(windows, all(unix, not(target_os = "macos"))))]
fn test_date_set_invalid() {
    let result = new_ucmd!().arg("--set").arg("123abcd").fails();
    result.no_stdout();
    assert!(result.stderr_str().starts_with("date: invalid date "));
}

#[test]
#[cfg(all(unix, not(target_os = "macos")))]
fn test_date_set_permissions_error() {
    if !(get_effective_uid() == 0 || uucore::os::is_wsl_1()) {
        let result = new_ucmd!()
            .arg("--set")
            .arg("2020-03-11 21:45:00+08:00")
            .fails();
        result.no_stdout();
        assert!(result.stderr_str().starts_with("date: cannot set date: "));
    }
}

#[test]
#[cfg(target_os = "macos")]
fn test_date_set_mac_unavailable() {
    let result = new_ucmd!()
        .arg("--set")
        .arg("2020-03-11 21:45:00+08:00")
        .fails();
    result.no_stdout();
    assert!(result
        .stderr_str()
        .starts_with("date: setting the date is not supported by macOS"));
}

#[test]
#[cfg(all(unix, not(target_os = "macos")))]
/// TODO: expected to fail currently; change to succeeds() when required.
fn test_date_set_valid_2() {
    if get_effective_uid() == 0 {
        let result = new_ucmd!()
            .arg("--set")
            .arg("Sat 20 Mar 2021 14:53:01 AWST")
            .fails();
        result.no_stdout();
        assert!(result.stderr_str().starts_with("date: invalid date "));
    }
}

#[test]
#[cfg(all(unix, not(target_os = "macos")))]
/// TODO: expected to fail currently; change to succeeds() when required.
fn test_date_set_valid_3() {
    if get_effective_uid() == 0 {
        let result = new_ucmd!()
            .arg("--set")
            .arg("Sat 20 Mar 2021 14:53:01") // Local timezone
            .fails();
        result.no_stdout();
        assert!(result.stderr_str().starts_with("date: invalid date "));
    }
}

#[test]
#[cfg(all(unix, not(target_os = "macos")))]
/// TODO: expected to fail currently; change to succeeds() when required.
fn test_date_set_valid_4() {
    if get_effective_uid() == 0 {
        let result = new_ucmd!()
            .arg("--set")
            .arg("2020-03-11 21:45:00") // Local timezone
            .fails();
        result.no_stdout();
        assert!(result.stderr_str().starts_with("date: invalid date "));
    }
}
