From 3f78b4ab4f199dce461421ec34b955a0aa3e4008 Mon Sep 17 00:00:00 2001
From: nvonpentz <12549658+nvonpentz@users.noreply.github.com>
Date: Fri, 8 Sep 2023 14:56:43 -0400
Subject: [PATCH] Use Ankr to generate token lists

---
 scripts/index.js |  9 ++++++++
 scripts/util.cjs | 58 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 67 insertions(+)

diff --git a/scripts/index.js b/scripts/index.js
index dc49185..14c63cd 100644
--- a/scripts/index.js
+++ b/scripts/index.js
@@ -30,6 +30,12 @@ async function stageEVMTokenFile(stagingDir, inputTokenFilePath, coingeckoIds) {
   )
 }
 
+async function stageCombinedTokenFile(stagingDir, coingeckoIds) {
+  const dstPath = path.join(stagingDir, 'token-lists.json')
+  const tokenLists = await util.generateTokenList(coingeckoIds)
+  fs.writeFileSync(dstPath, JSON.stringify(tokenLists, null, 2))
+}
+
 async function stageMainnetTokenFile(stagingDir, inputTokenFilePath, coingeckoIds) {
   // Read in the JSON file located at inputTokenFilePath
   const tokenList = JSON.parse(fs.readFileSync(inputTokenFilePath, 'utf-8'))
@@ -267,6 +273,9 @@ async function stageTokenPackage() {
     fs.mkdirSync(imagesDstPath)
   }
 
+  // Generate combined token list
+  await stageCombinedTokenFile(stagingDir, coingeckoIds)
+
   // Add MetaMask tokens for contract-map.json
   const metamaskTokenPath = path.join('node_modules', '@metamask', 'contract-metadata', 'contract-map.json');
   await stageMainnetTokenFile(stagingDir, metamaskTokenPath, coingeckoIds)
diff --git a/scripts/util.cjs b/scripts/util.cjs
index 1c6d298..27de99f 100644
--- a/scripts/util.cjs
+++ b/scripts/util.cjs
@@ -280,6 +280,63 @@ const installErrorHandlers = () => {
   })
 }
 
+const generateTokenList = async (coingeckoIds) => {
+    const ankrApiKey = process.env.ANKR_API_KEY
+    const ankrSupportedChains = {
+        "eth": "0x1",
+        "bsc": "0x38",
+        "fantom": "0xfa",
+        "avalanche": "0xa86a",
+        "polygon": "0x89",
+        "optimism": "0xa",
+    };
+
+    const tokenList = {};
+
+    for (let chainKey in ankrSupportedChains) {
+        let chainId = ankrSupportedChains[chainKey];
+
+        const response = await fetch(`https://rpc.ankr.com/multichain/${ankrApiKey}/?ankr_getCurrencies=`, {
+            method: 'POST',
+            headers: {
+                'accept': 'application/json',
+                'content-type': 'application/json'
+            },
+            body: JSON.stringify({
+                "jsonrpc": "2.0",
+                "method": "ankr_getCurrencies",
+                "params": {
+                    "blockchain": chainKey
+                },
+                "id": 1
+            })
+        });
+
+        const data = await response.json();
+
+        if (data.result && data.result.currencies) {
+            let tokens = data.result.currencies;
+            let tokenMapping = {};
+
+            for (let token of tokens) {
+                let coingeckoId = coingeckoIds[chainId] && coingeckoIds[chainId][token.address] ? coingeckoIds[chainId][token.address] : null;
+                tokenMapping[token.address] = {
+                    "name": token.name,
+                    "logo": token.thumbnail,
+                    "symbol": token.symbol,
+                    "decimals": token.decimals,
+                    "coingeckoId": coingeckoId,
+                    "erc20": true,
+                };
+            }
+
+            tokenList[chainId] = tokenMapping;
+        }
+    }
+
+    return tokenList;
+}
+
 const generateMainnetTokenList = async (fullTokenList) => {
   const MAX_TOKEN_LIST_SIZE = 100
   const coinGeckoApiBaseUrl = 'https://api.coingecko.com/api/v3'
@@ -679,6 +736,7 @@ module.exports = {
   installErrorHandlers,
   saveToPNGResize,
   download,
+  generateTokenList,
   generateMainnetTokenList,
   generateDappLists,
   addSupportedCoinbaseTokens,