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path: root/client/src/client/helper.rs
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use arrayvec::ArrayVec;
use event_loop::{Chunk, Loop, PeerId};
use gamenet::msg::{Game, System};
use hexdump::hexdump_iter;
use itertools::Itertools;
use log::LogLevel;
use log::{log, log_enabled, warn};
use packer::with_packer;
use snapshot::format::Item as SnapItem;
use std::{fmt, path::PathBuf};

pub trait LoopExt: Loop {
    fn send_system<'a, S: Into<System<'a>>>(&mut self, pid: PeerId, msg: S) {
        fn inner<L: Loop + ?Sized>(msg: System, pid: PeerId, evloop: &mut L) {
            let mut buf: ArrayVec<[u8; 2048]> = ArrayVec::new();
            with_packer(&mut buf, |p| msg.encode(p).unwrap());
            evloop.send(Chunk {
                pid,
                vital: true,
                data: &buf,
            })
        }
        inner(msg.into(), pid, self)
    }
    fn send_game<'a, G: Into<Game<'a>>>(&mut self, pid: PeerId, msg: G) {
        fn inner<L: Loop + ?Sized>(msg: Game, pid: PeerId, evloop: &mut L) {
            let mut buf: ArrayVec<[u8; 2048]> = ArrayVec::new();
            with_packer(&mut buf, |p| msg.encode(p).unwrap());
            evloop.send(Chunk {
                pid,
                vital: true,
                data: &buf,
            })
        }
        inner(msg.into(), pid, self)
    }
}
impl<L: Loop> LoopExt for L {}

pub fn need_file(crc: i32, name: &str) -> bool {
    let mut path = PathBuf::new();
    path.push("/tmp/maps");
    path.push(format!("{}_{:08x}.map", name, crc));
    !path.exists()
}

pub fn hexdump(level: LogLevel, data: &[u8]) {
    if log_enabled!(level) {
        hexdump_iter(data).foreach(|s| log!(level, "{}", s));
    }
}
pub struct Warn<'a>(pub &'a [u8]);

impl<'a, W: fmt::Debug> warn::Warn<W> for Warn<'a> {
    fn warn(&mut self, w: W) {
        warn!("{:?}", w);
        hexdump(LogLevel::Warn, self.0);
    }
}

#[derive(Debug)]
pub struct WarnSnap<'a>(pub SnapItem<'a>);

impl<'a, W: fmt::Debug> warn::Warn<W> for WarnSnap<'a> {
    fn warn(&mut self, w: W) {
        warn!("{:?} for {:?}", w, self.0);
    }
}

pub fn check_dummy_map(name: &[u8], crc: u32, size: i32) -> bool {
    if name != b"dummy" {
        return false;
    }
    match (crc, size) {
        (0xbeae0b9f, 549) => {}
        (0x6c760ac4, 306) => {}
        _ => warn!("unknown dummy map, crc={}, size={}", crc, size),
    }
    true
}

pub fn get_map_path(name: &str, crc: i32) -> PathBuf {
    let mut path = PathBuf::new();
    path.push("/tmp/maps");
    path.push(format!("{}_{:08x}.map", name, crc));
    path
}