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use std::str::FromStr;

use crate::error::{RemotingError, RemotingError::FromStrError};

#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub enum BrokerRequestCode {
    RegisterBroker = 103,
    BrokerHeartbeat = 904,
    GetBrokerClusterInfo = 106,
}

impl BrokerRequestCode {
    pub fn value_of(code: i32) -> Option<Self> {
        match code {
            103 => Some(BrokerRequestCode::RegisterBroker),
            106 => Some(BrokerRequestCode::GetBrokerClusterInfo),
            _ => None,
        }
    }

    pub fn get_code(&self) -> i32 {
        *self as i32
    }

    pub fn get_type_from_name(name: &str) -> Option<Self> {
        match name.to_ascii_uppercase().as_str() {
            "REGISTERBROKER" => Some(BrokerRequestCode::RegisterBroker),
            "BROKERHEARTBEAT" => Some(BrokerRequestCode::BrokerHeartbeat),
            "GETBROKERCLUSTERINFO" => Some(BrokerRequestCode::GetBrokerClusterInfo),
            _ => None,
        }
    }
}

impl FromStr for BrokerRequestCode {
    type Err = RemotingError;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        match s.to_ascii_uppercase().as_str() {
            "REGISTERBROKER" => Ok(BrokerRequestCode::RegisterBroker),
            "BROKERHEARTBEAT" => Ok(BrokerRequestCode::BrokerHeartbeat),
            "GETBROKERCLUSTERINFO" => Ok(BrokerRequestCode::GetBrokerClusterInfo),
            _ => Err(FromStrError(format!(
                "Parse from string error,Invalid BrokerRequestCode: {}",
                s
            ))),
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_value_of() {
        let code: i32 = 103;
        assert_eq!(
            BrokerRequestCode::value_of(code),
            Some(BrokerRequestCode::RegisterBroker)
        );

        let code: i32 = 1;
        assert_eq!(BrokerRequestCode::value_of(code), None);
    }

    #[test]
    fn test_get_type_from_name() {
        let name = "RegisterBroker";
        assert_eq!(
            BrokerRequestCode::get_type_from_name(name),
            Some(BrokerRequestCode::RegisterBroker)
        );

        let name = "UNKNOW";
        assert_eq!(BrokerRequestCode::get_type_from_name(name), None);
    }
}