use std::io::Cursor;

use anyhow::Result;

use crate::{datatypes::{varint::VarInt, lenght_prefixed_string::LenghtPrefixedString}, packets::{Decode, Encode, Packet}};

#[derive(Debug)]
pub struct HandshakePacket {
    pub protocal_version: VarInt,
    pub server_address: LenghtPrefixedString,
    pub server_port: u16,
    pub next_state: VarInt,
}


impl Decode for HandshakePacket {
    fn decode(cursor: &mut Cursor<&[u8]>) -> Result<HandshakePacket> {
        let protocal_version = VarInt::decode(cursor)?;
        let server_address = LenghtPrefixedString::decode(cursor)?;
        let server_port = u16::decode(cursor)?;
        let next_state = VarInt::decode(cursor)?;
        
        Ok(HandshakePacket {
            protocal_version,
            server_address,
            server_port,
            next_state,
        })
    }
}

impl Encode for HandshakePacket {
    fn encode(&self, buffer: &mut Vec<u8>) -> Result<()> {
        todo!()
    }
}

impl Packet for HandshakePacket {
    fn get_id(&self) -> i32 {0x00}
}