1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
const fs = require("fs")
const request = require("request-promise-native")
const low = require("lowdb")
const FileAsync = require("lowdb/adapters/FileAsync")
const express = require("express")
const app = express()
const port = 3000
const patch = "8.24.1";
const key = "RGAPI-dce1850a-0954-4b1e-8072-77a26739f076";
let appRateLimit1 = 10;
let appRateLimit120 = 100;
let appRateLimitCount1;
let appRateLimitCount120;
// Express routing
// ---------------
let rules = [
["/lol", "index.html"],
["/lol/script.js", "script.js"],
["/lol/style.css", "style.css"],
];
for (i in rules) {
let path = rules[i][0];
let file = rules[i][1];
app.get(path, (req, res) => {
res.sendFile(__dirname + "/html/" + file);
});
}
// ---------------
// Riot API request
// ----------------
const regions = {
"BR": "br1.api.riotgames.com",
"EUNE": "eun1.api.riotgames.com",
"EUW": "euw1.api.riotgames.com",
"JP": "jp1.api.riotgames.com",
"KR": "kr.api.riotgames.com",
"LAN": "la1.api.riotgames.com",
"LAS": "la2.api.riotgames.com",
"NA": "na1.api.riotgames.com",
"OCE": "oc1.api.riotgames.com",
"TR": "tr1.api.riotgames.com",
"RU": "ru.api.riotgames.com",
"PBE": "pbe1.api.riotgames.com",
};
let requests = [];
async function executeRequest() {
if (requests.length > 0) {
let req = requests.shift();
if (req.retries < 1) req.rej();
else {
try {
console.log("[Info] request: " + req.url);
let result = await request({uri: req.url, resolveWithFullResponse: true, json: true});
let appRateLimit = result.headers["x-app-rate-limit"];
let appRateLimitCount = result.headers["x-app-rate-limit-count"];
appRateLimit1 = appRateLimit.split(",")[0].split(":")[0];
appRateLimit120 = appRateLimit.split(",")[1].split(":")[0];
appRateLimitCount1 = appRateLimitCount.split(",")[0].split(":")[0];
appRateLimitCount120 = appRateLimitCount.split(",")[1].split(":")[0];
if (typeof result.body == "object") req.res(result.body);
else req.res(JSON.parse(result.body));
} catch (err) {
console.log("[Error] riotRequest: " + err.message);
req.retries--;
requests.push(req);
}
}
}
let delay1 = 1000 / (appRateLimit1 - 1);
let delay120 = 120000 / (appRateLimit120 - 1);
setTimeout(executeRequest, Math.max(delay1, delay120));
}
executeRequest();
async function riotRequest(region, url, params, retries) {
let req = "https://" + regions[region] + url + "?api_key=" + key;
for (p in params) {
req += "&" + p + "=" + params[p];
}
return new Promise((resolve, reject) => {
requests.push({ url: req, retries: 5, res: resolve, rej: reject });
});
}
// ----------------
// User functionality
// ------------------
let users = {};
let nameLookup = {};
async function loadUserDb(region, accountId) {
if (!users[region]) users[region] = {};
if (users[region][accountId]) return;
let adapter = new FileAsync("data/" + region + "/" + accountId + ".json");
let db = await low(adapter);
await db.defaults({ games: [], gameSummaries: [], account: {} })
.write();
users[region][accountId] = db;
}
async function loadUserInfo(region, summonerName) {
if (!nameLookup[region]) nameLookup[region] = {};
if (nameLookup[region][summonerName]) return;
let user = await riotRequest(region, "/lol/summoner/v4/summoners/by-name/" + summonerName, {}, 5);
let accountId = user.accountId;
await loadUserDb(region, accountId);
users[region][accountId].set("account", user);
nameLookup[region][summonerName] = accountId;
}
async function loadGameSummaries(region, accountId) {
let totalGames;
let bI = 0, eI = 100;
loop1:
do {
let matchlist = await riotRequest(region, "/lol/match/v4/matchlists/by-account/" + accountId, { beginIndex: bI, endIndex: eI }, 5);
totalGames = matchlist.totalGames;
for (m in matchlist.matches) {
let match = matchlist.matches[m];
if (users[region][accountId].get("gameSummaries").find({ gameId: match.gameId }).value()) {
break loop1;
}
users[region][accountId].get("gameSummaries").push(match).write();
}
bI = eI;
eI += 100;
} while (bI <= totalGames);
users[region][accountId].write();
users[region][accountId].set("gameSummaries",
users[region][accountId].get("gameSummaries").sortBy("timestamp").sortedUniqBy((x) => x.gameId).value()).write();
}
app.get("/lol/matches", async (req, res) => {
let region = req.query.region;
let summoner = req.query.summoner;
console.log("[Info] getting game summaries for " + summoner + " from " + region);
try {
await loadUserInfo(region, summoner);
let accountId = nameLookup[region][summoner];
await loadGameSummaries(region, accountId);
let matches = users[region][accountId].get("gameSummaries").value();
console.log(matches.length);
res.send(JSON.stringify(matches));
} catch (err) {
console.log("[Error] GET /lol/matches: " + err);
res.send("error");
}
});
// ------------------
// Static Data
// -----------
let champions;
let champLookup = {};
function loadChampions() {
request("http://ddragon.leagueoflegends.com/cdn/" + patch + "/data/en_US/champion.json", (err, res, body) => {
if (err) console.log("[Error] loadChampions: " + err);
champions = JSON.parse(body).data;
for (c in champions) {
champLookup[champions[c].key] = c;
}
});
}
app.get("/lol/champions", (req, res) => {
res.send(JSON.stringify(Object.keys(champions)));
});
app.get("/lol/champlookup", (req, res) => {
res.send(JSON.stringify(champLookup));
});
// -----------
loadChampions();
app.listen(port, () => {
console.log("Listening on port %d", port)
});
|
