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use portable_atomic::{AtomicU16, AtomicU8};

use util::sync::Mutex as SyncMutex;

use super::candidate_base::*;
use super::*;
use crate::error::*;
use crate::rand::generate_cand_id;
use crate::util::*;

/// The config required to create a new `CandidateServerReflexive`.
#[derive(Default)]
pub struct CandidateServerReflexiveConfig {
    pub base_config: CandidateBaseConfig,

    pub rel_addr: String,
    pub rel_port: u16,
}

impl CandidateServerReflexiveConfig {
    /// Creates a new server reflective candidate.
    pub fn new_candidate_server_reflexive(self) -> Result<CandidateBase> {
        let ip: IpAddr = match self.base_config.address.parse() {
            Ok(ip) => ip,
            Err(_) => return Err(Error::ErrAddressParseFailed),
        };
        let network_type = determine_network_type(&self.base_config.network, &ip)?;

        let mut candidate_id = self.base_config.candidate_id;
        if candidate_id.is_empty() {
            candidate_id = generate_cand_id();
        }

        let c = CandidateBase {
            id: candidate_id,
            network_type: AtomicU8::new(network_type as u8),
            candidate_type: CandidateType::ServerReflexive,
            address: self.base_config.address,
            port: self.base_config.port,
            resolved_addr: SyncMutex::new(create_addr(network_type, ip, self.base_config.port)),
            component: AtomicU16::new(self.base_config.component),
            foundation_override: self.base_config.foundation,
            priority_override: self.base_config.priority,
            related_address: Some(CandidateRelatedAddress {
                address: self.rel_addr,
                port: self.rel_port,
            }),
            conn: self.base_config.conn,
            ..CandidateBase::default()
        };

        Ok(c)
    }
}