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#!/usr/bin/env node
const http = require("http");
const express = require("express");
const socketio = require("socket.io");
const child_process = require("child_process");
const PORT = 8080;
const app = express();
const server = http.Server(app);
const io = socketio(server);
// gameid -> {pl: [socket]*{1,2}, started: Bool, nextServe: Int, score: [Int, Int]}
const games = new Map();
app.get("/", (req, res) => {
res.sendFile(__dirname + "/game.html");
});
const staticFiles = [
"/game.css",
"/game.js",
"/board.js",
];
app.get(staticFiles, (req, res) => {
res.sendFile(__dirname + req.path);
});
io.on("connection", (conn) => {
let proc = null;
conn.on("open", () => {
console.log("open");
proc = child_process.spawn("../main", {
stdio: ["pipe", "pipe", process.stderr]
});
conn.emit("open");
let lineBuffer = "";
proc.stdout.on("data", (data) => {
lineBuffer += data;
let idx;
while ((idx = lineBuffer.indexOf("\n")) != -1) {
conn.emit("line", lineBuffer.slice(0, idx));
lineBuffer = lineBuffer.slice(idx + 1);
}
});
proc.on("close", () => {
if (proc != null) {
console.log("close");
conn.emit("close");
proc.kill();
proc = null;
}
});
proc.on("error", (err) => {
if (proc != null) {
console.log("close");
conn.emit("close");
conn.emit("message", "The AI process encountered an error.");
proc = null;
}
});
});
conn.on("disconnect", () => {
if (proc != null) {
console.log("close");
proc.kill();
proc = null;
}
});
conn.on("line", (line) => {
proc.stdin.write(line + "\n");
});
});
server.listen(PORT, () => console.log("Listening on port " + PORT));
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