Add ren adapter

Author: 0xngmi

projects/ren/index.js

@@ -0,0 +1,70 @@
+const { request, gql } = require("graphql-request");
+const sdk = require('@defillama/sdk');
+const BigNumber = require("bignumber.js")
+
+const graphUrl = 'https://api.thegraph.com/subgraphs/name/renproject/renvm'
+const graphQuery = gql`
+query get_tvl($block: Int) {
+  assets(
+    block: { number: $block }
+  ) {
+    priceInUsd
+    symbol
+    tokenAddress
+  }
+}
+`;
+const usdtAddress = '0xdac17f958d2ee523a2206206994597c13d831ec7';
+const darkNodeStakingContract = "0x60Ab11FE605D2A2C3cf351824816772a131f8782";
+const renToken = '0x408e41876cCCDC0F92210600ef50372656052a38'
+
+async function tvl(timestamp, block) {
+  const balances = {}
+  const {assets} = await request(
+    graphUrl,
+    graphQuery,
+    {
+      block,
+    }
+  );
+  const assetCalls = assets.map(asset=>({
+    target: asset.tokenAddress
+  }))
+  const decimals = sdk.api.abi.multiCall({
+    abi: 'erc20:decimals',
+    block,
+    calls: assetCalls
+  });
+  const totalSupplies = sdk.api.abi.multiCall({
+    abi: 'erc20:totalSupply',
+    block,
+    calls: assetCalls
+  });
+  const stakedRen = await sdk.api.abi.call({
+    target: renToken,
+    abi: 'erc20:balanceOf',
+    params: [darkNodeStakingContract],
+    block
+  });
+  balances[renToken] = stakedRen.output;
+
+  const resolvedDecimals = (await decimals).output;
+  const resolvedSupplies = (await totalSupplies).output
+  const assetsUsdTvl = assets.reduce((acc, asset, index)=>{
+    const dec = Number(resolvedDecimals[index].output)
+    const supply = BigNumber(resolvedSupplies[index].output)
+    const usdAmount = supply.div(BigNumber(10).pow(dec)).times(asset.priceInUsd).toNumber()
+    return acc + usdAmount;
+  }, 0)
+  balances[usdtAddress]= (assetsUsdTvl * 1e6).toFixed(0)
+
+  return balances
+}
+
+module.exports = {
+  name: 'REN',
+  token: 'REN',
+  category: 'Assets',
+  start: 0, // WRONG!
+  tvl
+}