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#!/usr/bin/node
/* jshint esnext:true */
"use strict";
const request = require("request-promise"),
Promise = require("bluebird"),
WebSocket = require("ws"),
webstomp = require("webstomp-client"),
cacheManager = require("cache-manager"),
Channel = require("async-csp").Channel;
let cache = cacheManager.caching({
store: "memory",
ttl: 10 // s
});
const UPDATE_TIMEOUT = parseInt(process.env.UPDATE_TIMEOUT) || 60; // s
const API_FE_URL = process.env.API_FE_URL || "http://vainsocial.dev/bot/api",
API_MAP_URL = process.env.API_MAP_URL || "http://vainsocial.dev/masters/",
API_WS_URL = process.env.API_WS_URL || "ws://vainsocial.dev/ws",
API_BE_URL = process.env.API_BE_URL || "http://vainsocial.dev/bridge";
const notif = webstomp.over(new WebSocket(API_WS_URL,
{ perMessageDeflate: false }));
(function connect() {
notif.connect("web", "web",
() => console.log("connected to queue"),
(err) => connect()
);
})();
function getMap(url) {
return request({
uri: API_MAP_URL + url,
json: true,
forever: true
});
}
async function getFE(url, params={}, ttl=60, cachekey=undefined) {
if (cachekey == undefined) cachekey = url + JSON.stringify(params);
return await cache.wrap(cachekey, async () => {
try {
return await request({
uri: API_FE_URL + url,
qs: params,
json: true,
forever: true
});
} catch (err) {
// TODO sort errors, loggly
return undefined;
}
}, { ttl: ttl });
}
// send a POST and optionally bust cache
async function postFE(url, params={}, cachekey=undefined) {
if (cachekey) cache.del(cachekey);
return await request.post(API_FE_URL + url, {
form: params,
json: true,
forever: true
});
}
function postBE(url) {
return request.post({
uri: API_BE_URL + url,
json: true,
forever: true
});
}
module.exports.get = getFE;
module.exports.post = postFE;
module.exports.backend = postBE;
function subscribe(topic, channel) {
return notif.subscribe("/topic/" + topic, (msg) => {
channel.put(msg.body);
msg.ack();
}, {"ack": "client"});
}
// return id<->name mappings
async function getMappings() {
return await cache.wrap("mappings", async () => {
let mapping = new Map();
await Promise.all([
Promise.map(
["gamemode"], async (table) => {
mapping[table] = new Map();
(await getMap(table)).map(
(map) => mapping[table][map["id"]] = map["name"])
}
),
// name <-> API name
Promise.map(
["hero"], async (table) => {
mapping[table] = new Map();
(await getMap(table)).map(
(map) => mapping[table][map["api_name"]] = map["name"])
}
)
]);
return mapping;
}, { ttl: 60 * 30 });
}
module.exports.mapGameMode = async (id) =>
(await getMappings())["gamemode"][id];
module.exports.mapActor = async (api_name) =>
(await getMappings())["hero"][api_name];
// return a set of IGN of supporters
module.exports.getGamers = async () =>
(await getFE("/gamer", {}, 60 * 30)).map((gamer) => gamer.name);
// be an async iterator
// next() returns promises that are awaited until there is an update
module.exports.subscribeUpdates = (name, timeout=UPDATE_TIMEOUT) => {
const channel = new Channel(),
subscription = subscribe("player." + name, channel);
// stop updates after timeout
setTimeout(() => channel.close(), timeout*1000);
let msg;
return { next: async function () {
do msg = await channel.take();
while([Channel.DONE, "search_fail", "search_success",
"stats_update", "matches_update"].indexOf(msg) == -1);
// bust caches
if (["stats_update"].indexOf(msg) != -1)
cache.del("player+" + name);
if (["matches_update"].indexOf(msg) != -1) {
cache.del("matches+" + name);
cache.del("player+" + name);
}
if ([Channel.DONE, "search_fail"].indexOf(msg) != -1) {
subscription.unsubscribe();
return undefined;
}
return msg;
} };
}
// search an unknown player
module.exports.searchPlayer = (name) =>
postBE("/player/" + name + "/search");
// update a known player
module.exports.updatePlayer = (name) =>
postBE("/player/" + name + "/update");
// return player
module.exports.getPlayer = (name) =>
getFE("/player/" + name, {}, 60, "player+" + name);
// search or update a player
module.exports.upsearchPlayer = async (name) => {
if (await module.exports.getPlayer(name) == undefined)
await module.exports.searchPlayer(name);
else await module.exports.updatePlayer(name);
}
// return matches
module.exports.getMatches = async (name) => {
const data = await getFE("/player/" + name + "/matches/2.3.1.1", {},
60 * 60, "matches+" + name);
if (data == undefined) return [];
return data[0].data;
}
// return single match
module.exports.getMatch = (id) =>
getFE("/match/" + id, {}, 60 * 60);
// return a guild
module.exports.getGuild = (token) =>
getFE("/guild", { user_token: token }, 60, "guild+" + token);
// TODO! cache guilds by guild id, not by user token
// add user to guild
module.exports.addToGuild = async (token, member) => {
const membership = await postFE("/guild/members", {
user_token: token,
member_name: member
}, "guild+" + token);
cache.del("guild+" + token);
return membership;
}
// recalc fame, block until timeout or points update
module.exports.calculateGuild = async (id, token) => {
const channel = new Channel(),
subscription = subscribe("global", channel);
await module.exports.backend("/team/" + id + "/crunch");
// stop updates after timeout
setTimeout(() => channel.close(), UPDATE_TIMEOUT*1000);
let msg;
do msg = await channel.take();
while([Channel.DONE, "points_update"].indexOf(msg) == -1);
if (msg == "points_update") cache.del("guild+" + token);
subscription.unsubscribe();
}
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