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// SPDX-License-Identifier: Apache-2.0

use crate::{BaseInterface, HsrConfig, HsrInterface, HsrProtocol};

impl From<nispor::HsrProtocol> for HsrProtocol {
    fn from(v: nispor::HsrProtocol) -> Self {
        match v {
            nispor::HsrProtocol::Hsr => Self::Hsr,
            nispor::HsrProtocol::Prp => Self::Prp,
            _ => {
                log::warn!("Unknown HSR protocol {:?}", v);
                Self::default()
            }
        }
    }
}

pub(crate) fn np_hsr_to_nmstate(
    np_iface: &nispor::Iface,
    base_iface: BaseInterface,
) -> HsrInterface {
    let mut mutlicast_value: u8 = 0;
    if let Some(conf) = np_iface.hsr.as_ref() {
        mutlicast_value = {
            let hex_value: String = conf
                .supervision_addr
                .clone()
                .chars()
                .rev()
                .take(2)
                .collect::<String>()
                .chars()
                .rev()
                .collect();
            u8::from_str_radix(hex_value.as_str(), 16).unwrap_or_default()
        };
    }
    let hsr_conf = np_iface.hsr.as_ref().map(|np_hsr_info| HsrConfig {
        port1: np_hsr_info.port1.clone().unwrap_or_default(),
        port2: np_hsr_info.port2.clone().unwrap_or_default(),
        supervision_address: Some(np_hsr_info.supervision_addr.clone()),
        // Due to a kernel bug multicast_spec is always zero. Until it is fixed,
        // use the last byte of supervision_address instead.
        multicast_spec: mutlicast_value,
        protocol: np_hsr_info.protocol.into(),
    });

    HsrInterface {
        base: base_iface,
        hsr: hsr_conf,
    }
}