| 1 | const url = require('url'); |
| 2 | const sqlite3 = require('sqlite3'); |
| 3 | const db = new sqlite3.Database('db/vchess.sqlite'); |
| 4 | |
| 5 | // Node version in Ubuntu 16.04 does not know about URL class |
| 6 | function getJsonFromUrl(url) { |
| 7 | var query = url.substr(2); //starts with "/?" |
| 8 | var result = {}; |
| 9 | query.split("&").forEach(function(part) { |
| 10 | var item = part.split("="); |
| 11 | result[item[0]] = decodeURIComponent(item[1]); |
| 12 | }); |
| 13 | return result; |
| 14 | } |
| 15 | |
| 16 | module.exports = function(wss) { |
| 17 | db.serialize(function() { |
| 18 | db.all("SELECT * FROM Variants", (err,variants) => { |
| 19 | let clients = { "index": {} }; |
| 20 | let games = {}; //pending games (player sid) |
| 21 | for (const v of variants) |
| 22 | clients[v.name] = {}; |
| 23 | // No-op function as a callback when sending messages |
| 24 | const noop = () => { }; |
| 25 | wss.on("connection", (socket, req) => { |
| 26 | // const params = new URL("http://localhost" + req.url).searchParams; |
| 27 | // const sid = params.get("sid"); |
| 28 | // const page = params.get("page"); |
| 29 | var query = getJsonFromUrl(req.url); |
| 30 | const sid = query["sid"]; |
| 31 | const page = query["page"]; |
| 32 | // Ignore duplicate connections: |
| 33 | if (!!clients[page][sid]) |
| 34 | { |
| 35 | socket.send(JSON.stringify({code:"duplicate"})); |
| 36 | return; |
| 37 | } |
| 38 | clients[page][sid] = socket; |
| 39 | if (page == "index") |
| 40 | { |
| 41 | // Send counting info |
| 42 | const countings = {}; |
| 43 | for (const v of variants) |
| 44 | countings[v.name] = Object.keys(clients[v.name]).length; |
| 45 | socket.send(JSON.stringify({code:"counts",counts:countings})); |
| 46 | } |
| 47 | else |
| 48 | { |
| 49 | // Send to every client connected on index an update message for counts |
| 50 | Object.keys(clients["index"]).forEach( k => { |
| 51 | clients["index"][k].send( |
| 52 | JSON.stringify({code:"increase",vname:page}), noop); |
| 53 | }); |
| 54 | // Also notify potential opponents: |
| 55 | // hit all clients which check if sid corresponds |
| 56 | Object.keys(clients[page]).forEach( k => { |
| 57 | clients[page][k].send(JSON.stringify({code:"connect",id:sid}), noop); |
| 58 | }); |
| 59 | socket.on("message", objtxt => { |
| 60 | let obj = JSON.parse(objtxt); |
| 61 | switch (obj.code) |
| 62 | { |
| 63 | case "newchat": |
| 64 | if (!!clients[page][obj.oppid]) |
| 65 | { |
| 66 | clients[page][obj.oppid].send( |
| 67 | JSON.stringify({code:"newchat",msg:obj.msg}), noop); |
| 68 | } |
| 69 | break; |
| 70 | case "newmove": |
| 71 | if (!!clients[page][obj.oppid]) |
| 72 | { |
| 73 | clients[page][obj.oppid].send( |
| 74 | JSON.stringify({code:"newmove",move:obj.move}), noop); |
| 75 | } |
| 76 | break; |
| 77 | case "ping": |
| 78 | if (!!clients[page][obj.oppid]) |
| 79 | socket.send(JSON.stringify({code:"pong",gameId:obj.gameId})); |
| 80 | break; |
| 81 | case "myname": |
| 82 | // Reveal my username to opponent |
| 83 | if (!!clients[page][obj.oppid]) |
| 84 | { |
| 85 | clients[page][obj.oppid].send(JSON.stringify({ |
| 86 | code:"oppname", name:obj.name})); |
| 87 | } |
| 88 | break; |
| 89 | case "lastate": |
| 90 | if (!!clients[page][obj.oppid]) |
| 91 | { |
| 92 | const oppId = obj.oppid; |
| 93 | obj.oppid = sid; //I'm oppid for my opponent |
| 94 | clients[page][oppId].send(JSON.stringify(obj), noop); |
| 95 | } |
| 96 | break; |
| 97 | case "newgame": |
| 98 | if (!!games[page]) |
| 99 | { |
| 100 | // Start a new game |
| 101 | const oppId = games[page]["id"]; |
| 102 | const fen = games[page]["fen"]; |
| 103 | delete games[page]; |
| 104 | const mycolor = Math.random() < 0.5 ? 'w' : 'b'; |
| 105 | socket.send(JSON.stringify( |
| 106 | {code:"newgame",fen:fen,oppid:oppId,color:mycolor})); |
| 107 | if (!!clients[page][oppId]) |
| 108 | { |
| 109 | clients[page][oppId].send( |
| 110 | JSON.stringify( |
| 111 | {code:"newgame",fen:fen,oppid:sid,color:mycolor=="w"?"b":"w"}), |
| 112 | noop); |
| 113 | } |
| 114 | } |
| 115 | else |
| 116 | games[page] = {id:sid, fen:obj.fen}; //wait for opponent |
| 117 | break; |
| 118 | case "cancelnewgame": //if a user cancel his seek |
| 119 | delete games[page]; |
| 120 | break; |
| 121 | case "resign": |
| 122 | if (!!clients[page][obj.oppid]) |
| 123 | clients[page][obj.oppid].send(JSON.stringify({code:"resign"}), noop); |
| 124 | break; |
| 125 | } |
| 126 | }); |
| 127 | } |
| 128 | socket.on("close", () => { |
| 129 | delete clients[page][sid]; |
| 130 | // Remove potential pending game |
| 131 | if (!!games[page] && games[page]["id"] == sid) |
| 132 | delete games[page]; |
| 133 | if (page != "index") |
| 134 | { |
| 135 | // Send to every client connected on index an update message for counts |
| 136 | Object.keys(clients["index"]).forEach( k => { |
| 137 | clients["index"][k].send( |
| 138 | JSON.stringify({code:"decrease",vname:page}), noop); |
| 139 | }); |
| 140 | } |
| 141 | // Also notify potential opponents: |
| 142 | // hit all clients which check if sid corresponds |
| 143 | Object.keys(clients[page]).forEach( k => { |
| 144 | clients[page][k].send(JSON.stringify({code:"disconnect",id:sid}), noop); |
| 145 | }); |
| 146 | }); |
| 147 | }); |
| 148 | }); |
| 149 | }); |
| 150 | } |