1 const Discord
= require('discord.js');
2 const { token
, channel
} = require('./config/discord.json');
4 // Node version in Ubuntu 16.04 does not know about URL class
5 function getJsonFromUrl(url
) {
6 const query
= url
.substr(2); //starts with "/?"
8 query
.split("&").forEach((part
) => {
9 const item
= part
.split("=");
10 result
[item
[0]] = decodeURIComponent(item
[1]);
15 // Helper to safe-send some message through a (web-)socket:
16 function send(socket
, message
) {
17 if (!!socket
&& socket
.readyState
== 1)
18 socket
.send(JSON
.stringify(message
));
21 module
.exports = function(wss
) {
22 // Associative array page --> sid --> tmpId --> socket
23 // "page" is either "/" for hall or "/game/some_gid" for Game,
24 // or "/mygames" for Mygames page (simpler: no 'people' array).
25 // tmpId is required if a same user (browser) has different tabs
27 // NOTE: only purpose of sidToPages = know when to delete keys in idToSid
30 const discordClient
= new Discord
.Client();
31 let discordChannel
= null;
32 if (token
.length
> 0) {
33 discordClient
.login(token
);
34 discordClient
.once("ready", () => {
35 discordChannel
= discordClient
.channels
.cache
.get(channel
);
38 wss
.on("connection", (socket
, req
) => {
39 const query
= getJsonFromUrl(req
.url
);
40 const sid
= query
["sid"];
41 const id
= query
["id"];
42 const tmpId
= query
["tmpId"];
43 const page
= query
["page"];
44 const notifyRoom
= (page
, code
, obj
={}, except
) => {
45 if (!clients
[page
]) return;
46 except
= except
|| [];
47 Object
.keys(clients
[page
]).forEach(k
=> {
48 if (except
.includes(k
)) return;
49 Object
.keys(clients
[page
][k
]).forEach(x
=> {
50 if (k
== sid
&& x
== tmpId
) return;
52 clients
[page
][k
][x
].socket
,
53 Object
.assign({ code: code
, from: [sid
, tmpId
] }, obj
)
58 const deleteConnexion
= () => {
59 if (!clients
[page
] || !clients
[page
][sid
] || !clients
[page
][sid
][tmpId
])
60 return; //job already done
61 delete clients
[page
][sid
][tmpId
];
62 if (Object
.keys(clients
[page
][sid
]).length
== 0) {
63 delete clients
[page
][sid
];
64 const pgIndex
= sidToPages
[sid
].findIndex(pg
=> pg
== page
);
65 sidToPages
[sid
].splice(pgIndex
, 1);
66 if (Object
.keys(clients
[page
]).length
== 0)
68 // Am I totally offline?
69 if (sidToPages
[sid
].length
== 0) {
70 delete sidToPages
[sid
];
76 const doDisconnect
= () => {
78 // Nothing to notify when disconnecting from MyGames page:
79 if (page
!= "/mygames") {
80 notifyRoom(page
, "disconnect");
81 if (page
.indexOf("/game/") >= 0)
82 notifyRoom("/", "gdisconnect", { page: page
});
85 const messageListener
= (objtxt
) => {
86 let obj
= JSON
.parse(objtxt
);
88 // Wait for "connect" message to notify connection to the room,
89 // because if game loading is slow the message listener might
90 // not be ready too early.
92 notifyRoom(page
, "connect");
93 if (page
.indexOf("/game/") >= 0)
94 notifyRoom("/", "gconnect", { page: page
});
101 case "pollclients": {
104 Object
.keys(clients
[page
]).forEach(k
=> {
106 Object
.keys(clients
[page
][k
]).forEach(x
=> {
107 // Avoid polling my tmpId: no information to get
108 if (k
!= sid
|| x
!= tmpId
)
109 sockIds
[k
][x
] = { focus: clients
[page
][k
][x
].focus
};
112 send(socket
, { code: "pollclients", sockIds: sockIds
});
115 case "pollclientsandgamers": {
118 Object
.keys(clients
["/"]).forEach(k
=> {
120 Object
.keys(clients
[page
][k
]).forEach(x
=> {
121 // Avoid polling my tmpId: no information to get
122 if (k
!= sid
|| x
!= tmpId
) {
125 focus: clients
[page
][k
][x
].focus
130 // NOTE: a "gamer" could also just be an observer
131 Object
.keys(clients
).forEach(p
=> {
132 if (p
.indexOf("/game/") >= 0) {
133 Object
.keys(clients
[p
]).forEach(k
=> {
134 if (!sockIds
[k
]) sockIds
[k
] = {};
135 Object
.keys(clients
[p
][k
]).forEach(x
=> {
136 if (k
!= sid
|| x
!= tmpId
) {
139 focus: clients
[p
][k
][x
].focus
146 send(socket
, { code: "pollclientsandgamers", sockIds: sockIds
});
150 // Asking something: from is fully identified,
151 // but the requested resource can be from any tmpId (except current!)
154 case "askchallenges":
156 const pg
= obj
.page
|| page
; //required for askidentity and askgame
157 if (!!clients
[pg
] && !!clients
[pg
][obj
.target
]) {
158 let tmpIds
= Object
.keys(clients
[pg
][obj
.target
]);
159 if (obj
.target
== sid
) {
161 const idx_myTmpid
= tmpIds
.findIndex(x
=> x
== tmpId
);
162 if (idx_myTmpid
>= 0) tmpIds
.splice(idx_myTmpid
, 1);
164 if (tmpIds
.length
> 0) {
165 const ttmpId
= tmpIds
[Math
.floor(Math
.random() * tmpIds
.length
)];
167 clients
[pg
][obj
.target
][ttmpId
].socket
,
168 { code: obj
.code
, from: [sid
,tmpId
,page
] }
175 // Special situation of the previous "case":
176 // Full game can be asked to any observer.
177 case "askfullgame": {
178 if (!!clients
[page
]) {
179 let sids
= Object
.keys(clients
[page
]).filter(k
=> k
!= sid
);
180 if (sids
.length
> 0) {
181 // Pick a SID at random in this set, and ask full game:
182 const rid
= sids
[Math
.floor(Math
.random() * sids
.length
)];
183 // ..to a random tmpId:
184 const tmpIds
= Object
.keys(clients
[page
][rid
]);
185 const rtmpId
= tmpIds
[Math
.floor(Math
.random() * tmpIds
.length
)];
187 clients
[page
][rid
][rtmpId
].socket
,
188 { code: "askfullgame", from: [sid
,tmpId
] }
191 // I'm the only person who have the game for the moment:
192 send(socket
, { code: "fullgame", data: { empty: true } });
198 // Some Hall events: target all tmpId's (except mine),
199 case "refusechallenge":
201 Object
.keys(clients
[page
][obj
.target
]).forEach(x
=> {
202 if (obj
.target
!= sid
|| x
!= tmpId
)
204 clients
[page
][obj
.target
][x
].socket
,
205 { code: obj
.code
, data: obj
.data
}
210 // Notify all room: mostly game events
213 case "deletechallenge_s":
220 // "newgame" message can provide a page (corr Game --> Hall)
221 if (obj
.code
== "newchallenge") {
222 // Filter out targeted challenges and correspondance games:
223 if (!obj
.data
.to
&& obj
.data
.cadence
.indexOf('d') < 0) {
225 (obj
.data
.sender
|| "@nonymous") + " : " +
226 "**" + obj
.data
.vname
+ "** " +
227 "[" + obj
.data
.cadence
+ "] "
229 if (!!discordChannel
) discordChannel
.send(challMsg
);
231 // Log when running locally (dev, debug):
232 console
.log(challMsg
);
234 delete obj
.data
["sender"];
237 obj
.page
|| page
, obj
.code
, {data: obj
.data
}, obj
.excluded
);
241 // A rematch game started:
242 notifyRoom(page
, "newgame", {data: obj
.data
});
243 // Explicitely notify Hall if gametype == corr.
244 // Live games will be polled from Hall after gconnect event.
245 if (obj
.data
.cadence
.indexOf('d') >= 0)
246 notifyRoom("/", "newgame", {data: obj
.data
});
250 const dataWithFrom
= { from: [sid
,tmpId
], data: obj
.data
};
251 // Special case re-send newmove only to opponent:
252 if (!!obj
.target
&& !!clients
[page
][obj
.target
]) {
253 Object
.keys(clients
[page
][obj
.target
]).forEach(x
=> {
255 clients
[page
][obj
.target
][x
].socket
,
256 Object
.assign({ code: "newmove" }, dataWithFrom
)
260 // NOTE: data.from is useful only to opponent
261 notifyRoom(page
, "newmove", dataWithFrom
);
267 !!clients
[page
][obj
.target
[0]] &&
268 !!clients
[page
][obj
.target
[0]][obj
.target
[1]]
271 clients
[page
][obj
.target
[0]][obj
.target
[1]].socket
,
278 // Special case: notify all, 'transroom': Game --> Hall
279 notifyRoom("/", "result", { gid: obj
.gid
, score: obj
.score
});
283 const gamePg
= "/game/" + obj
.gid
;
284 if (!!clients
[gamePg
] && !!clients
[gamePg
][obj
.target
]) {
285 Object
.keys(clients
[gamePg
][obj
.target
]).forEach(x
=> {
287 clients
[gamePg
][obj
.target
][x
].socket
,
297 case "notifynewgame":
298 if (!!clients
["/mygames"]) {
299 obj
.targets
.forEach(t
=> {
300 const k
= t
.sid
|| idToSid
[t
.id
];
301 if (!!clients
["/mygames"][k
]) {
302 Object
.keys(clients
["/mygames"][k
]).forEach(x
=> {
304 clients
["/mygames"][k
][x
].socket
,
305 { code: obj
.code
, data: obj
.data
}
317 !!clients
[page
][sid
] &&
318 !!clients
[page
][sid
][tmpId
]
320 clients
[page
][sid
][tmpId
].focus
= (obj
.code
== "getfocus");
322 if (page
== "/") notifyRoom("/", obj
.code
, { page: "/" }, [sid
]);
324 // Notify game room + Hall:
325 notifyRoom(page
, obj
.code
, {}, [sid
]);
326 notifyRoom("/", obj
.code
, { page: page
}, [sid
]);
330 // Passing, relaying something: from isn't needed,
331 // but target is fully identified (sid + tmpId)
338 const pg
= obj
.target
[2] || page
; //required for identity and game
339 // NOTE: if in game we ask identity to opponent still in Hall, but
340 // leaving Hall, clients[pg] or clients[pg][target] could be undef.
341 if (!!clients
[pg
] && !!clients
[pg
][obj
.target
[0]]) {
343 clients
[pg
][obj
.target
[0]][obj
.target
[1]].socket
,
344 { code:obj
.code
, data:obj
.data
}
351 const closeListener
= () => {
352 // For browser or tab closing (including page reload):
355 // Update clients object: add new connexion
356 const newElt
= { socket: socket
, focus: true };
358 clients
[page
] = { [sid
]: {[tmpId
]: newElt
} };
359 else if (!clients
[page
][sid
])
360 clients
[page
][sid
] = { [tmpId
]: newElt
};
362 clients
[page
][sid
][tmpId
] = newElt
;
363 // Also update helper correspondances
364 if (!idToSid
[id
]) idToSid
[id
] = sid
;
365 if (!sidToPages
[sid
]) sidToPages
[sid
] = [];
366 const pgIndex
= sidToPages
[sid
].findIndex(pg
=> pg
== page
);
367 if (pgIndex
=== -1) sidToPages
[sid
].push(page
);
368 socket
.on("message", messageListener
);
369 socket
.on("close", closeListener
);