zero-trust-rps 0.1.1

Online Multiplayer Rock Paper Scissors
Documentation 
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use crate::common::message::ClientMessage;

use super::state::{RpsState, UserMoveMethods};

#[repr(u8)]
pub enum UserMoveKind {
    JoinRoom,
    Play,
    ConfirmPlay,
    BackToRoom,
}

impl UserMoveMethods for UserMoveKind {
    #[inline]
    fn allowed_state(&self) -> RpsState {
        use UserMoveKind::*;
        match self {
            JoinRoom => RpsState::BeforeRoom,
            Play => RpsState::InRoom,
            ConfirmPlay => RpsState::Played,
            BackToRoom => RpsState::Confirmed,
        }
    }

    #[inline]
    fn resulting_state(&self) -> RpsState {
        use UserMoveKind::*;
        match self {
            JoinRoom => RpsState::InRoom,
            Play => RpsState::Played,
            ConfirmPlay => RpsState::Confirmed,
            BackToRoom => RpsState::InRoom,
        }
    }
}

impl UserMoveKind {
    #[allow(dead_code)]
    pub fn from_client_message(message: &ClientMessage) -> Option<UserMoveKind> {
        message.try_into().ok()
    }
}

impl TryFrom<&ClientMessage> for UserMoveKind {
    type Error = ();

    #[inline]
    fn try_from(value: &ClientMessage) -> Result<Self, Self::Error> {
        use ClientMessage::*;
        match value {
            Ping { c: _ } => Err(()),
            Join {
                room_id: _,
                user: _,
            } => Ok(UserMoveKind::JoinRoom),
            Play { value: _, round: _ } => Ok(UserMoveKind::Play),
            ConfirmPlay(_) => Ok(UserMoveKind::ConfirmPlay),
            RoundFinished { round_id: _ } => Ok(UserMoveKind::BackToRoom),
        }
    }
}