X-Git-Url: https://gitweb.ps.run/lolstats/blobdiff_plain/751ad80e1f6880faedb233c104d112f614dd2771..HEAD:/index.js

diff --git a/index.js b/index.js
index 250ab98..b8ddb22 100644
--- a/index.js
+++ b/index.js
@@ -1,16 +1,188 @@
-const express = require("express")
 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
 
-app.get("/", (req, res) => {
-  fs.readFile("index.html", (err, data) => {
-    res.sendFile(__dirname + "/html/index.html");
+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("/script.js", (req, res) => res.sendFile(__dirname + "/html/script.js"))
+app.get("/lol/champlookup", (req, res) => {
+  res.send(JSON.stringify(champLookup));
+});
+// -----------
 
+loadChampions();
 app.listen(port, () => {
   console.log("Listening on port %d", port)
 });