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use crate::{CustomSerialization, NetworkInterface, RemoteAddr};
use actix::prelude::*;
use serde::{Deserialize, Serialize};
use uuid::Uuid;

/// Wrapper for messages to be sent to remote actor
#[derive(Message, Serialize, Deserialize)]
#[rtype(result = "()")]
pub struct RemoteWrapper {
    pub destination: RemoteAddr,
    #[serde(skip_serializing)]
    #[serde(skip_deserializing)]
    pub message_buffer: Vec<u8>,
    pub identifier: String,
    #[serde(skip_serializing)]
    #[serde(skip_deserializing)]
    pub source: Option<Addr<NetworkInterface>>,
    pub conversation_id: Option<Uuid>,
}

impl RemoteWrapper {
    pub fn new<T: RemoteMessage>(
        destination: RemoteAddr,
        message: T,
        conversation_id: Option<Uuid>,
    ) -> RemoteWrapper {
        let serializer = message.get_serializer();
        RemoteWrapper {
            destination,
            message_buffer: serializer
                .serialize(&message)
                .expect("Cannot serialize message"),
            identifier: message.get_identifier().to_string(),
            source: None,
            conversation_id,
        }
    }
}

impl Clone for RemoteWrapper {
    fn clone(&self) -> Self {
        RemoteWrapper {
            destination: self.destination.clone(),
            message_buffer: self.message_buffer.clone(),
            identifier: self.identifier.clone(),
            source: self.source.clone(),
            conversation_id: self.conversation_id,
        }
    }
}

/// Helper Trait to prepare messages to be sent over the network
pub trait RemoteMessage
where
    Self: Message + Send + Serialize,
{
    type Serializer: CustomSerialization;
    const IDENTIFIER: &'static str;

    fn get_identifier(&self) -> &str {
        Self::IDENTIFIER
    }

    fn get_serializer(&self) -> Box<Self::Serializer>;

    fn generate_serializer() -> Box<Self::Serializer>;

    fn set_source(&mut self, source: Addr<NetworkInterface>);
}