| 1 | //const url = require('url'); |
| 2 | const Variants = require("./variants"); |
| 3 | |
| 4 | function getJsonFromUrl(url) { |
| 5 | var query = url.substr(2); //starts with "/?" |
| 6 | var result = {}; |
| 7 | query.split("&").forEach(function(part) { |
| 8 | var item = part.split("="); |
| 9 | result[item[0]] = decodeURIComponent(item[1]); |
| 10 | }); |
| 11 | return result; |
| 12 | } |
| 13 | |
| 14 | module.exports = function(wss) { |
| 15 | |
| 16 | let clients = { "index": {} }; |
| 17 | let games = {}; //pending games (player sid) |
| 18 | for (const v of Variants) |
| 19 | clients[v.name] = {}; |
| 20 | |
| 21 | // (resign, newgame, newmove). See https://github.com/websockets/ws/blob/master/lib/websocket.js around line 313 |
| 22 | // TODO: awaiting newmove, resign, (+newgame?) :: in memory structure (use Redis ?) |
| 23 | let newmoves = {}; |
| 24 | let newresign = {}; |
| 25 | for (const v of Variants) |
| 26 | { |
| 27 | newmoves[v.name] = {}; |
| 28 | newresign[v.name] = {}; |
| 29 | } |
| 30 | |
| 31 | wss.on("connection", (socket, req) => { |
| 32 | //const params = new URL("http://localhost" + req.url).searchParams; |
| 33 | var query = getJsonFromUrl(req.url); |
| 34 | const sid = query["sid"]; //params.get("sid"); |
| 35 | const page = query["page"]; //params.get("page"); |
| 36 | clients[page][sid] = socket; |
| 37 | if (page == "index") |
| 38 | { |
| 39 | // Send counting info |
| 40 | const countings = {}; |
| 41 | for (const v of Variants) |
| 42 | countings[v.name] = Object.keys(clients[v.name]).length; |
| 43 | socket.send(JSON.stringify({code:"counts",counts:countings})); |
| 44 | } |
| 45 | else |
| 46 | { |
| 47 | // Send to every client connected on index an update message for counts |
| 48 | Object.keys(clients["index"]).forEach( k => { |
| 49 | clients["index"][k].send(JSON.stringify({code:"increase",vname:page})); |
| 50 | }); |
| 51 | // Also notify potential opponents: hit all clients which check if sid corresponds |
| 52 | Object.keys(clients[page]).forEach( k => { |
| 53 | clients[page][k].send(JSON.stringify({code:"connect",id:sid})); |
| 54 | }); |
| 55 | if (!!newmoves[page][sid]) |
| 56 | { |
| 57 | socket.send(JSON.stringify({code:"newmove",move:newmoves[page][sid]})); |
| 58 | delete newmoves[page][sid]; |
| 59 | } |
| 60 | if (!!newresign[page][sid]) |
| 61 | { |
| 62 | socket.send(JSON.stringify({code:"resign"})); |
| 63 | delete newresign[page][sid]; |
| 64 | } |
| 65 | socket.on("message", objtxt => { |
| 66 | let obj = JSON.parse(objtxt); |
| 67 | switch (obj.code) |
| 68 | { |
| 69 | case "newmove": |
| 70 | if (!!clients[page][obj.oppid] && clients[page][obj.oppid].readyState == WebSocket.OPEN) |
| 71 | clients[page][obj.oppid].send(JSON.stringify({code:"newmove",move:obj.move})); |
| 72 | else |
| 73 | newmoves[page][obj.oppid] = obj.move; |
| 74 | break; |
| 75 | case "ping": |
| 76 | if (!!clients[page][obj.oppid] && clients[page][obj.oppid].readyState == WebSocket.OPEN) |
| 77 | socket.send(JSON.stringify({code:"pong"})); |
| 78 | break; |
| 79 | case "newgame": |
| 80 | if (!!games[page]) |
| 81 | { |
| 82 | // Start a new game |
| 83 | const oppId = games[page]["id"]; |
| 84 | const fen = games[page]["fen"]; |
| 85 | delete games[page]; |
| 86 | const mycolor = Math.random() < 0.5 ? 'w' : 'b'; |
| 87 | socket.send(JSON.stringify({code:"newgame",fen:fen,oppid:oppId,color:mycolor})); |
| 88 | clients[page][oppId].send(JSON.stringify({code:"newgame",fen:fen,oppid:sid,color:mycolor=="w"?"b":"w"})); |
| 89 | } |
| 90 | else |
| 91 | games[page] = {id:sid, fen:obj.fen}; //wait for opponent |
| 92 | break; |
| 93 | case "resign": |
| 94 | if (!!clients[page][obj.oppid] && clients[page][obj.oppid].readyState == WebSocket.OPEN) |
| 95 | clients[page][obj.oppid].send(JSON.stringify({code:"resign"})); |
| 96 | else |
| 97 | newresign[page][obj.oppid] = true; |
| 98 | break; |
| 99 | } |
| 100 | }); |
| 101 | } |
| 102 | socket.on("close", () => { |
| 103 | delete clients[page][sid]; |
| 104 | // Remove potential pending game |
| 105 | if (!!games[page] && games[page]["id"] == sid) |
| 106 | delete games[page]; |
| 107 | if (page != "index") |
| 108 | { |
| 109 | // Send to every client connected on index an update message for counts |
| 110 | Object.keys(clients["index"]).forEach( k => { |
| 111 | clients["index"][k].send(JSON.stringify({code:"decrease",vname:page})); |
| 112 | }); |
| 113 | } |
| 114 | // Also notify potential opponents: hit all clients which check if sid corresponds |
| 115 | Object.keys(clients[page]).forEach( k => { |
| 116 | clients[page][k].send(JSON.stringify({code:"disconnect",id:sid})); |
| 117 | }); |
| 118 | }); |
| 119 | }); |
| 120 | } |