use std::error::Error;
use protobuf::{Enum, Message};
use crate::message_c2s::{MessageC2SChat, MessageC2SGoodbye, MessageC2SHello, MessageC2SInput, MessageC2SPing};
use crate::message_s2c::{MessageS2CChat, MessageS2CGoodbye, MessageS2CHello, MessageS2CPlanetData, MessageS2CPlayersUpdate, MessageS2CPong};
use crate::planet::PlanetType;
use crate::starkingdoms_protocol::PacketWrapper;
include!(concat!(env!("OUT_DIR"), "/protos/mod.rs"));

pub const PROTOCOL_VERSION: u32 = 1;

#[derive(Debug)]
pub enum MessageC2S {
    Hello(MessageC2SHello),
    Goodbye(MessageC2SGoodbye),
    Chat(MessageC2SChat),
    Ping(MessageC2SPing),
    Input(MessageC2SInput)
}

#[derive(Debug)]
pub enum MessageS2C {
    Hello(MessageS2CHello),
    Goodbye(MessageS2CGoodbye),
    Chat(MessageS2CChat),
    Pong(MessageS2CPong),
    PlayersUpdate(MessageS2CPlayersUpdate),
    PlanetData(MessageS2CPlanetData)
}

impl TryFrom<&[u8]> for MessageC2S {
    type Error = Box<dyn Error>;

    fn try_from(value: &[u8]) -> Result<Self, Self::Error> {
        let pkt = starkingdoms_protocol::PacketWrapper::parse_from_bytes(value)?;

        let deser_pkt = match pkt.packet_id {
            _id if _id == message_c2s::message_c2shello::Packet_info::type_.value() as i64 => {
                MessageC2S::Hello(MessageC2SHello::parse_from_bytes(&pkt.packet_data)?)
            },
            _id if _id == message_c2s::message_c2sgoodbye::Packet_info::type_.value() as i64 => {
                MessageC2S::Goodbye(MessageC2SGoodbye::parse_from_bytes(&pkt.packet_data)?)
            },
            _id if _id == message_c2s::message_c2schat::Packet_info::type_.value() as i64 => {
                MessageC2S::Chat(MessageC2SChat::parse_from_bytes(&pkt.packet_data)?)
            },
            _id if _id == message_c2s::message_c2sping::Packet_info::type_.value() as i64 => {
                MessageC2S::Ping(MessageC2SPing::parse_from_bytes(&pkt.packet_data)?)
            },
            _id if _id == message_c2s::message_c2sinput::Packet_info::type_.value() as i64 => {
                MessageC2S::Input(MessageC2SInput::parse_from_bytes(&pkt.packet_data)?)
            }
            _id => { return Err(format!("Unrecognized C2S packet {}", _id).into()); }
        };

        Ok(deser_pkt)
    }
}

impl TryInto<Vec<u8>> for MessageC2S {
    type Error = Box<dyn Error>;

    fn try_into(self) -> Result<Vec<u8>, Self::Error> {
        let (pkt_id, pkt_bytes) = match self {
            MessageC2S::Hello(p) => {
                (message_c2s::message_c2shello::Packet_info::type_.value(), p.write_to_bytes()?)
            }
            MessageC2S::Goodbye(p) => {
                (message_c2s::message_c2sgoodbye::Packet_info::type_.value(), p.write_to_bytes()?)
            }
            MessageC2S::Chat(p) => {
                (message_c2s::message_c2schat::Packet_info::type_.value(), p.write_to_bytes()?)
            }
            MessageC2S::Ping(p) => {
                (message_c2s::message_c2sping::Packet_info::type_.value(), p.write_to_bytes()?)
            }
            MessageC2S::Input(p) => {
                (message_c2s::message_c2sping::Packet_info::type_.value(), p.write_to_bytes()?)
            }
        };

        let pkt = PacketWrapper {
            packet_id: pkt_id as i64,
            packet_data: pkt_bytes,
            special_fields: Default::default(),
        };

        Ok(pkt.write_to_bytes()?)
    }
}

impl TryFrom<&[u8]> for MessageS2C {
    type Error = Box<dyn Error>;

    fn try_from(value: &[u8]) -> Result<Self, Self::Error> {
        let pkt = PacketWrapper::parse_from_bytes(value)?;

        let deser_pkt = match pkt.packet_id {
            _id if _id == message_s2c::message_s2chello::Packet_info::type_.value() as i64 => {
                MessageS2C::Hello(MessageS2CHello::parse_from_bytes(&pkt.packet_data)?)
            },
            _id if _id == message_s2c::message_s2cgoodbye::Packet_info::type_.value() as i64 => {
                MessageS2C::Goodbye(MessageS2CGoodbye::parse_from_bytes(&pkt.packet_data)?)
            },
            _id if _id == message_s2c::message_s2cchat::Packet_info::type_.value() as i64 => {
                MessageS2C::Chat(MessageS2CChat::parse_from_bytes(&pkt.packet_data)?)
            },
            _id if _id == message_s2c::message_s2cpong::Packet_info::type_.value() as i64 => {
                MessageS2C::Pong(MessageS2CPong::parse_from_bytes(&pkt.packet_data)?)
            },
            _id if _id == message_s2c::message_s2cplayers_update::Packet_info::type_.value() as i64 => {
                MessageS2C::PlayersUpdate(MessageS2CPlayersUpdate::parse_from_bytes(&pkt.packet_data)?)
            },
            _id if _id == message_s2c::message_s2cplanet_data::Packet_info::type_.value() as i64 => {
                MessageS2C::PlanetData(MessageS2CPlanetData::parse_from_bytes(&pkt.packet_data)?)
            },
            _ => { return Err("Not a S2C packet".into()); }
        };

        Ok(deser_pkt)
    }
}

impl TryInto<Vec<u8>> for MessageS2C {
    type Error = Box<dyn Error>;

    fn try_into(self) -> Result<Vec<u8>, Self::Error> {
        let (pkt_id, pkt_bytes) = match self {
            MessageS2C::Hello(p) => {
                (message_s2c::message_s2chello::Packet_info::type_.value(), p.write_to_bytes()?)
            }
            MessageS2C::Goodbye(p) => {
                (message_s2c::message_s2cgoodbye::Packet_info::type_.value(), p.write_to_bytes()?)
            }
            MessageS2C::Chat(p) => {
                (message_s2c::message_s2cchat::Packet_info::type_.value(), p.write_to_bytes()?)
            }
            MessageS2C::Pong(p) => {
                (message_s2c::message_s2cpong::Packet_info::type_.value(), p.write_to_bytes()?)
            }
            MessageS2C::PlayersUpdate(p) => {
                (message_s2c::message_s2cplayers_update::Packet_info::type_.value(), p.write_to_bytes()?)
            }
            MessageS2C::PlanetData(p) => {
                (message_s2c::message_s2cplanet_data::Packet_info::type_.value(), p.write_to_bytes()?)
            }
        };

        let pkt = PacketWrapper {
            packet_id: pkt_id as i64,
            packet_data: pkt_bytes,
            special_fields: Default::default(),
        };

        Ok(pkt.write_to_bytes()?)
    }
}

impl planet::PlanetType {
    pub fn as_texture_id(&self) -> String {
        match self {
            PlanetType::Earth => "earth".to_string(),
            PlanetType::Moon => "moon".to_string()
        }
    }
}