Step toward a one-page application
[vchess.git] / sockets.js
index f3d479d..1ebd521 100644 (file)
@@ -1,6 +1,7 @@
-//const url = require('url');
-const Variants = require("./variants");
+const url = require('url');
+const VariantModel = require("./models/Variant");
 
+// Node version in Ubuntu 16.04 does not know about URL class
 function getJsonFromUrl(url) {
        var query = url.substr(2); //starts with "/?"
        var result = {};
@@ -11,109 +12,144 @@ function getJsonFromUrl(url) {
        return result;
 }
 
-module.exports = function(wss) {
-
-       let clients = { "index": {} };
-       let games = {}; //pending games (player sid)
-       for (const v of Variants)
-               clients[v.name] = {};
+// TODO: empêcher multi-log du même user (envoyer le user ID + secret en même temps que name et...)
+// --> si secret ne matche pas celui trouvé en DB, stop
 
-       // (resign, newgame, newmove). See https://github.com/websockets/ws/blob/master/lib/websocket.js around line 313
-       // TODO: awaiting newmove, resign, (+newgame?) :: in memory structure (use Redis ?)
-       let newmoves = {};
-       let newresign = {};
-       for (const v of Variants)
-       {
-               newmoves[v.name] = {};
-               newresign[v.name] = {};
-       }
+// TODO: this file in the end will be much simpler, just tracking connect/disconnect
+// (everything else using WebRTC)
 
-       wss.on("connection", (socket, req) => {
-               //const params = new URL("http://localhost" + req.url).searchParams;
-               var query = getJsonFromUrl(req.url);
-               const sid = query["sid"]; //params.get("sid");
-               const page = query["page"]; //params.get("page");
-               clients[page][sid] = socket;
-               if (page == "index")
-               {
-                       // Send counting info
-                       const countings = {};
-                       for (const v of Variants)
-                               countings[v.name] = Object.keys(clients[v.name]).length;
-                       socket.send(JSON.stringify({code:"counts",counts:countings}));
-               }
-               else
-               {
-                       // Send to every client connected on index an update message for counts
-                       Object.keys(clients["index"]).forEach( k => {
-                               clients["index"][k].send(JSON.stringify({code:"increase",vname:page}));
-                       });
-                       // Also notify potential opponents: hit all clients which check if sid corresponds
-                       Object.keys(clients[page]).forEach( k => {
-                               clients[page][k].send(JSON.stringify({code:"connect",id:sid}));
-                       });
-                       if (!!newmoves[page][sid])
+module.exports = function(wss) {
+       VariantModel.getAll((err,variants) => {
+               let clients = { "index": {} };
+               let games = {}; //pending games (player sid)
+               for (const v of variants)
+                       clients[v.id] = {};
+               // No-op function as a callback when sending messages
+               const noop = () => { };
+               wss.on("connection", (socket, req) => {
+//                             const params = new URL("http://localhost" + req.url).searchParams;
+//                             const sid = params.get("sid");
+//                             const page = params.get("page");
+                       var query = getJsonFromUrl(req.url);
+                       const sid = query["sid"];
+                       const page = query["page"];
+                       // Ignore duplicate connections:
+                       if (!!clients[page][sid])
                        {
-                               socket.send(JSON.stringify({code:"newmove",move:newmoves[page][sid]}));
-                               delete newmoves[page][sid];
+                               socket.send(JSON.stringify({code:"duplicate"}));
+                               return;
                        }
-                       if (!!newresign[page][sid])
+                       clients[page][sid] = socket;
+                       if (page == "index")
                        {
-                               socket.send(JSON.stringify({code:"resign"}));
-                               delete newresign[page][sid];
+                               // Send counting info
+                               const countings = {};
+                               for (const v of variants)
+                                       countings[v.id] = Object.keys(clients[v.id]).length;
+                               socket.send(JSON.stringify({code:"counts",counts:countings}));
                        }
-                       socket.on("message", objtxt => {
-                               let obj = JSON.parse(objtxt);
-                               switch (obj.code)
-                               {
-                                       case "newmove":
-                                               if (!!clients[page][obj.oppid]) // && clients[page][obj.oppid].readyState == WebSocket.OPEN)
-                                                       clients[page][obj.oppid].send(JSON.stringify({code:"newmove",move:obj.move}));
-                                               else
-                                                       newmoves[page][obj.oppid] = obj.move;
-                                               break;
-                                       case "ping":
-                                               if (!!clients[page][obj.oppid]) // && clients[page][obj.oppid].readyState == WebSocket.OPEN)
-                                                       socket.send(JSON.stringify({code:"pong"}));
-                                               break;
-                                       case "newgame":
-                                               if (!!games[page])
-                                               {
-                                                       // Start a new game
-                                                       const oppId = games[page]["id"];
-                                                       const fen = games[page]["fen"];
-                                                       delete games[page];
-                                                       const mycolor = Math.random() < 0.5 ? 'w' : 'b';
-                                                       socket.send(JSON.stringify({code:"newgame",fen:fen,oppid:oppId,color:mycolor}));
-                                                       clients[page][oppId].send(JSON.stringify({code:"newgame",fen:fen,oppid:sid,color:mycolor=="w"?"b":"w"}));
-                                               }
-                                               else
-                                                       games[page] = {id:sid, fen:obj.fen}; //wait for opponent
-                                               break;
-                                       case "resign":
-                                               if (!!clients[page][obj.oppid]) // && clients[page][obj.oppid].readyState == WebSocket.OPEN)
-                                                       clients[page][obj.oppid].send(JSON.stringify({code:"resign"}));
-                                               else
-                                                       newresign[page][obj.oppid] = true;
-                                               break;
-                               }
-                       });
-               }
-               socket.on("close", () => {
-                       delete clients[page][sid];
-                       // Remove potential pending game
-                       if (!!games[page] && games[page]["id"] == sid)
-                               delete games[page];
-                       if (page != "index")
+                       else
                        {
                                // Send to every client connected on index an update message for counts
                                Object.keys(clients["index"]).forEach( k => {
-                                       clients["index"][k].send(JSON.stringify({code:"decrease",vname:page}));
+                                       clients["index"][k].send(
+                                               JSON.stringify({code:"increase",vid:page}), noop);
+                               });
+                               // Also notify potential opponents:
+                               // hit all clients which check if sid corresponds
+                               Object.keys(clients[page]).forEach( k => {
+                                       clients[page][k].send(JSON.stringify({code:"connect",id:sid}), noop);
+                               });
+                               socket.on("message", objtxt => {
+                                       let obj = JSON.parse(objtxt);
+                                       switch (obj.code)
+                                       {
+                                               case "newchat":
+                                                       if (!!clients[page][obj.oppid])
+                                                       {
+                                                               clients[page][obj.oppid].send(
+                                                                       JSON.stringify({code:"newchat",msg:obj.msg}), noop);
+                                                       }
+                                                       break;
+                                               case "newmove":
+                                                       if (!!clients[page][obj.oppid])
+                                                       {
+                                                               clients[page][obj.oppid].send(
+                                                                       JSON.stringify({code:"newmove",move:obj.move}), noop);
+                                                       }
+                                                       break;
+                                               case "ping":
+                                                       if (!!clients[page][obj.oppid])
+                                                               socket.send(JSON.stringify({code:"pong",gameId:obj.gameId}));
+                                                       break;
+                                               case "myname":
+                                                       // Reveal my username to opponent
+                                                       if (!!clients[page][obj.oppid])
+                                                       {
+                                                               clients[page][obj.oppid].send(JSON.stringify({
+                                                                       code:"oppname", name:obj.name}));
+                                                       }
+                                                       break;
+                                               case "lastate":
+                                                       if (!!clients[page][obj.oppid])
+                                                       {
+                                                               const oppId = obj.oppid;
+                                                               obj.oppid = sid; //I'm oppid for my opponent
+                                                               clients[page][oppId].send(JSON.stringify(obj), noop);
+                                                       }
+                                                       break;
+                                               case "newgame":
+                                                       if (!!games[page])
+                                                       {
+                                                               // Start a new game
+                                                               const oppId = games[page]["id"];
+                                                               const fen = games[page]["fen"];
+                                                               const gameId = games[page]["gameid"];
+                                                               delete games[page];
+                                                               const mycolor = (Math.random() < 0.5 ? 'w' : 'b');
+                                                               socket.send(JSON.stringify(
+                                                                       {code:"newgame",fen:fen,oppid:oppId,color:mycolor,gameid:gameId}));
+                                                               if (!!clients[page][oppId])
+                                                               {
+                                                                       clients[page][oppId].send(
+                                                                               JSON.stringify(
+                                                                                       {code:"newgame",fen:fen,oppid:sid,color:mycolor=="w"?"b":"w",gameid:gameId}),
+                                                                               noop);
+                                                               }
+                                                       }
+                                                       else
+                                                               games[page] = {id:sid, fen:obj.fen, gameid:obj.gameid}; //wait for opponent
+                                                       break;
+                                               case "cancelnewgame": //if a user cancel his seek
+                                                       delete games[page];
+                                                       break;
+                                               case "resign":
+                                                       if (!!clients[page][obj.oppid])
+                                                               clients[page][obj.oppid].send(JSON.stringify({code:"resign"}), noop);
+                                                       break;
+                                               // TODO: case "challenge" (get ID) --> send to all, "acceptchallenge" (with ID) --> send to all, "cancelchallenge" --> send to all
+                                               // also, "sendgame" (give current game info, if any) --> to new connections, "sendchallenges" (same for challenges) --> to new connections
+                                       }
                                });
                        }
-                       // Also notify potential opponents: hit all clients which check if sid corresponds
-                       Object.keys(clients[page]).forEach( k => {
-                               clients[page][k].send(JSON.stringify({code:"disconnect",id:sid}));
+                       socket.on("close", () => {
+                               delete clients[page][sid];
+                               // Remove potential pending game
+                               if (!!games[page] && games[page]["id"] == sid)
+                                       delete games[page];
+                               if (page != "index")
+                               {
+                                       // Send to every client connected on index an update message for counts
+                                       Object.keys(clients["index"]).forEach( k => {
+                                               clients["index"][k].send(
+                                                       JSON.stringify({code:"decrease",vid:page}), noop);
+                                       });
+                               }
+                               // Also notify potential opponents:
+                               // hit all clients which check if sid corresponds
+                               Object.keys(clients[page]).forEach( k => {
+                                       clients[page][k].send(JSON.stringify({code:"disconnect",id:sid}), noop);
+                               });
                        });
                });
        });