fixed hero icons and added signature file

sign.js

@@ -0,0 +1,75 @@
+const path = require('path');
+const fs = require('fs');
+const crypto = require('crypto');
+const jwt = require('jsonwebtoken');
+
+const sign = () => {
+    const getAllFilesToSign = (hudDir) => {
+        const files = [];
+        const getFiles = (dir) => {
+            fs.readdirSync(dir).forEach(file => {
+                const fileDirectory = path.join(dir, file);
+                if (fs.statSync(fileDirectory).isDirectory()) return getFiles(fileDirectory);
+                else if (fileDirectory.endsWith('.js') || fileDirectory.endsWith('.css')) return files.push(fileDirectory);
+            })
+        }
+        getFiles(hudDir)
+        return files;
+    }
+    
+    const dir = path.join(__dirname, 'build');
+    
+    const keyFile = path.join(dir, 'key');
+    
+    if (fs.existsSync(keyFile)) {
+        return true;
+    }
+    
+    const filesToSign = getAllFilesToSign(dir);
+    const passphrase  = crypto.randomBytes(48).toString('hex');
+    
+    filesToSign.push(path.join(dir, 'hud.json'));
+    
+    const keys = crypto.generateKeyPairSync('rsa', {
+        modulusLength: 4096,
+        publicKeyEncoding: {
+            type: 'spki',
+            format: 'pem'
+        },
+        privateKeyEncoding: {
+            type: 'pkcs8',
+            format: 'pem',
+            cipher: 'aes-256-cbc',
+            passphrase
+        }
+    });
+    
+    let success = true;
+    
+    const fileToContent = {};
+    
+    filesToSign.forEach(file => {
+        if (!success) {
+            return;
+        }
+        const content = fs.readFileSync(file, 'utf8');
+        try {
+            const signed = jwt.sign(content, { key: keys.privateKey.toString(), passphrase }, { algorithm: 'RS256' });
+            fileToContent[file] = signed;
+        } catch {
+            success = false;
+        }
+    
+    });
+    
+    if (!success) return false;
+    
+    filesToSign.forEach(file => {
+        fs.writeFileSync(file, fileToContent[file]);
+    });
+    
+    fs.writeFileSync(keyFile, keys.publicKey.toString());
+    
+    return success;
+}
+sign();

src/api/api.ts

@@ -25,7 +25,7 @@ export const getAssetURL = (
       return `${apiUrl}static/dota2/heroes/animated/${asset.startsWith("npc_dota_hero_")? asset : `npc_dota_hero_${asset}`}.webm`;
     }
     if (assetType === "heroes_icons") {
-      return `${apiUrl}static/dota2/heroes/icons/${asset}.png`;
+      return `${apiUrl}static/dota2/heroes/icons/${asset.replace("npc_dota_hero_", "")}.png`;
     }
     if (assetType === "items") {
       return `${apiUrl}static/dota2/${assetType}/${asset.replace(