added coinhain project

src/adaptors/coinhain/index.ts

@@ -0,0 +1,98 @@
+const { gql, request } = require('graphql-request');
+const utils = require('../utils');
+
+const query = gql`
+  query GetPools($chain: GqlChain!) {
+    poolGetPools(
+      first: 1000
+      where: { chainIn: [$chain], protocolVersionIn: [3] }
+    ) {
+      chain
+      symbol
+      address
+      poolTokens {
+        address
+        symbol
+      }
+      dynamicData {
+        totalLiquidity
+        aprItems {
+          type
+          apr
+          rewardTokenAddress
+        }
+      }
+    }
+  }
+`;
+
+const getV3Pools = async (backendChain, chainString) => {
+  try {
+    const { poolGetPools } = await request(
+      'https://api.coinhain.fi/graphql',
+      query,
+      { chain: backendChain }
+    );
+
+    return poolGetPools.map((pool) => {
+      const aprItems = pool.dynamicData.aprItems || [];
+
+      const baseApr = aprItems
+        .filter(
+          (item) => item.type === 'IB_YIELD' || item.type === 'SWAP_FEE_24H'
+        )
+        .reduce((sum, item) => sum + Number(item.apr), 0);
+
+      const stakingApr = aprItems
+        .filter((item) => item.type === 'STAKING')
+        .reduce((sum, item) => sum + Number(item.apr), 0);
+
+      const rewardTokens = aprItems
+        .filter((item) => item.type === 'STAKING' && item.rewardTokenAddress)
+        .map((item) => item.rewardTokenAddress);
+
+      const underlyingTokens = pool.poolTokens
+        .map((token) => token.address)
+        .filter(Boolean);
+
+      const chainUrl = chainString;
+
+      return {
+        pool: pool.address,
+        chain: utils.formatChain(chainString),
+        project: 'coinhain',
+        symbol: utils.formatSymbol(pool.symbol),
+        tvlUsd: Number(pool.dynamicData.totalLiquidity),
+        apyBase: baseApr * 100,
+        apyReward: stakingApr * 100,
+        rewardTokens: rewardTokens,
+        underlyingTokens: underlyingTokens,
+        url: `https://coinhain.fi/pools/${chainUrl}/v3/${pool.address}`,
+      };
+    });
+  } catch (error) {
+    console.error(
+      `Error fetching Coinhain pools for ${chainString}:`,
+      error
+    );
+    return [];
+  }
+};
+
+const poolsFunction = async () => {
+  const [
+ bscPools
+  ] = await Promise.all([
+    getV3Pools('BSC', 'bsc'),
+  ]);
+
+  return [
+    ...bscPools,
+  ];
+};
+
+module.exports = {
+  timetravel: false,
+  apy: poolsFunction,
+  url: 'https://coinhain.fi/pools',
+};