added user id array support

extended-user-info-api/.gitignore

@@ -1 +1,2 @@
-.env
+.env
+node_modules/

extended-user-info-api/app.js

@@ -1,10 +1,10 @@
 require('dotenv').config();
-const request = require('request');
 const express = require('express');
+const axios = require('axios');
 const path = require('path');
 
-var port = process.env.PORT || 8080;
-var botToken = process.env.BOT_TOKEN;
+const port = process.env.PORT || 8080;
+const botToken = process.env.BOT_TOKEN;
 
 const app = express();
 app.use(express.json());
@@ -17,51 +17,90 @@ app.get('/', function (req, res) {
     res.sendFile(path.join(__dirname, '/index.html'));
 });
 
-app.get("/:userIds", async (req, res) => {
-    const userIds = req.params.userIds.split(",");
-    const results = {};
+const userCache = {};
 
-    const promises = userIds.map(async userId => {
-        const options = {
-            url: `https://discord.com/api/v10/users/${userId}`,
-            headers: {
-                'Authorization': 'Bot ' + botToken
-            }
-        };
+const delay = ms => new Promise(resolve => setTimeout(resolve, ms));
 
-        return new Promise((resolve, reject) => {
-            request(options, (error, response, body) => {
-                if (!error && response.statusCode == 200) {
-                    var preuser = JSON.parse(body);
-                    var user = {
-                        "global_name": preuser.global_name,
-                        "public_flags": preuser.public_flags,
-                        "flags": preuser.flags,
-                        "accent_color": preuser.accent_color,
-                        "avatar_decoration": preuser.avatar_decoration,
-                        "banner": preuser.banner,
-                        "banner_color": preuser.banner_color,
-                    };
-                    if (preuser.avatar_decoration == null)
-                        user.avatar_decoration = null;
-                    else
-                        user.avatar_decoration = "https://cdn.discordapp.com/avatar-decorations/" + preuser.id + "/" + preuser.avatar_decoration + ".png";
-                    if (preuser.banner == null)
-                        user.banner_url = null;
-                    else
-                        user.banner_url = "https://cdn.discordapp.com/banners/" + preuser.id + "/" + preuser.banner + ".png";
-                    results[userId] = user;
-                    resolve();
-                } else {
-                    reject(response.statusCode);
+async function fetchUserDataWithRetry(userId) {
+    let retries = 0;
+    let delayTime = 1000;
+
+    while (retries < 3) {
+        try {
+            const response = await axios.get(`https://discord.com/api/v10/users/${userId}`, {
+                headers: {
+                    'Authorization': 'Bot ' + botToken
                 }
             });
-        });
-    });
+            return response.data;
+        } catch (error) {
+            if (error.response && error.response.status === 429) {
+                const retryAfter = error.response.headers['retry-after'] || delayTime;
+                console.error("Rate limited. Retrying after", retryAfter, "ms");
+                await delay(retryAfter);
+                delayTime *= 2;
+                retries++;
+            } else {
+                console.error("Error fetching user data:", error);
+                return null;
+            }
+        }
+    }
+    return null;
+}
+
+app.get("/:userIds", async (req, res) => {
+    const userIds = req.params.userIds.split(",");
+    var results = {};
+    var preresults = {};
+
     try {
-        await Promise.all(promises);
-        res.send(results);
-    } catch (errorStatusCode) {
-        res.status(errorStatusCode).send("Error fetching user data.");
+        for (const userId of userIds) {
+            if (userCache[userId]) {
+                preresults[userId] = userCache[userId];
+            } else {
+                const userData = await fetchUserDataWithRetry(userId);
+                if (userData !== null) {
+                    userCache[userId] = userData;
+                    preresults[userId] = userData;
+                } else {
+                    preresults[userId] = { error: "User not found or API error" };
+                }
+            }
+        }
+        console.log("Results:", preresults);
+        for (var preresult in preresults) {
+            var result = {
+                "global_name": preresult.global_name,
+                "public_flags": preresult.public_flags,
+                "flags": preresult.flags,
+                "accent_color": preresult.accent_color,
+                "avatar_decoration": preresult.avatar_decoration,
+                "banner": preresult.banner,
+                "banner_color": preresult.banner_color,
+            };
+            if (preresult.avatar_decoration == null)
+                result.avatar_decoration = null;
+            else
+                result.avatar_decoration = "https://cdn.discordapp.com/avatar-decorations/" + preresult.id + "/" + preresult.avatar_decoration + ".png";
+            if (preresult.banner == null)
+                result.banner_url = null;
+            else
+                result.banner_url = "https://cdn.discordapp.com/banners/" + preresult.id + "/" + preresult.banner + ".png";
+            results[preresult.id] = result;
+        }
+        res.send(preresults); //should be results
+    } catch (error) {
+        console.error("Error:", error);
+        res.status(500).json({ error: "Internal server error" });
+    }
+});
+
+app.use((err, req, res, next) => {
+    if (err) {
+        console.error("Error:", err);
+        res.status(500).json({ error: "Internal server error" });
+    } else {
+        next();
     }
 });