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// Copyright 2021 Twitter, Inc.
// Licensed under the Apache License, Version 2.0
// http://www.apache.org/licenses/LICENSE-2.0

use crate::*;

use clocksource::datetime::DateTime;

pub type FormatFunction = fn(
    write: &mut dyn std::io::Write,
    now: DateTime,
    record: &Record,
) -> Result<(), std::io::Error>;

pub fn default_format(
    w: &mut dyn std::io::Write,
    now: DateTime,
    record: &Record,
) -> Result<(), std::io::Error> {
    writeln!(
        w,
        "{} {} [{}] {}",
        now,
        record.level(),
        record.module_path().unwrap_or("<unnamed>"),
        record.args()
    )
}

pub fn klog_format(
    w: &mut dyn std::io::Write,
    now: DateTime,
    record: &Record,
) -> Result<(), std::io::Error> {
    writeln!(w, "{} {}", now, record.args())
}