//! Journal-priority encoding for `GetHostJournal` (`read_host_journal`
//! capability). One small enum, own topic module rather than a
//! catch-all — see `hive-sh4re/README.md`'s module list.

use serde::{Deserialize, Serialize};

/// Syslog priority levels for `GetHostJournal`. Serialised as lowercase
/// strings matching journalctl `-p` accepted values.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize, schemars::JsonSchema)]
#[serde(rename_all = "lowercase")]
pub enum JournalPriority {
    Emerg,
    Alert,
    Crit,
    Err,
    Warning,
    Notice,
    Info,
    Debug,
}

impl JournalPriority {
    /// Returns the lowercase string journalctl expects for `-p`. Named
    /// `as_journald_str` (not `as_str`) because this is a specific
    /// external-tool encoding, not the enum's general wire/db string —
    /// distinct call sites shouldn't reach for this by accident when they
    /// actually want the serde wire representation.
    #[must_use]
    pub fn as_journald_str(self) -> &'static str {
        match self {
            Self::Emerg => "emerg",
            Self::Alert => "alert",
            Self::Crit => "crit",
            Self::Err => "err",
            Self::Warning => "warning",
            Self::Notice => "notice",
            Self::Info => "info",
            Self::Debug => "debug",
        }
    }
}