/// A log level that can be used as an expected argument,
/// decoded from a string, and converted into a [`log::LevelFilter`]
#[derive(Debug, PartialEq)]
pub enum LogLevel {
    Error,
    Warn,
    Info,
    Debug,
    Trace,
}

impl std::str::FromStr for LogLevel {
    type Err = &'static str;
    fn from_str(s: &str) -> Result<Self, Self::Err> {
        match s {
            "error" => Ok(LogLevel::Error),
            "warn" => Ok(LogLevel::Warn),
            "info" => Ok(LogLevel::Info),
            "debug" => Ok(LogLevel::Debug),
            "trace" => Ok(LogLevel::Trace),
            _ => Err("expected 'error', 'warn', 'info', 'debug' or 'trace'"),
        }
    }
}

impl From<&LogLevel> for log::LevelFilter {
    fn from(log_level: &LogLevel) -> Self {
        match log_level {
            LogLevel::Error => log::LevelFilter::Error,
            LogLevel::Warn => log::LevelFilter::Warn,
            LogLevel::Info => log::LevelFilter::Info,
            LogLevel::Debug => log::LevelFilter::Debug,
            LogLevel::Trace => log::LevelFilter::Trace,
        }
    }
}