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Use Ankr to generate token lists #86

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Use Ankr to generate token lists #86

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9 changes: 9 additions & 0 deletions scripts/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -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'))
Expand Down Expand Up @@ -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)
Expand Down
58 changes: 58 additions & 0 deletions scripts/util.cjs
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Expand Up @@ -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'
Expand Down Expand Up @@ -679,6 +736,7 @@ module.exports = {
installErrorHandlers,
saveToPNGResize,
download,
generateTokenList,
generateMainnetTokenList,
generateDappLists,
addSupportedCoinbaseTokens,
Expand Down