[single-staking-pools-balanceof] New Strategy for Single Staking Pools (

snapshot-labs#68)

* New Strategy for Single Staking Pools

Implements new strategy to fetch Staked token amount in single staking pool

* Update src/strategies/single-staking-pools-balanceof/index.ts

* Update src/strategies/single-staking-pools-balanceof/index.ts

* Update src/strategies/single-staking-pools-balanceof/index.ts

* Update src/strategies/single-staking-pools-balanceof/README.md

* Update src/strategies/single-staking-pools-balanceof/examples.json

Co-authored-by: Chaitanya <[email protected]>

src/strategies/index.ts

@@ -148,6 +148,7 @@ import * as hasrock from './has-rock';
 import * as flexaCapacityStaking from './flexa-capacity-staking';
 import * as sunriseGamingUniv2Lp from './sunrisegaming-univ2-lp';
 import * as sunriseGamingStaking from './sunrisegaming-staking';
+import * as singleStakingPoolsBalanceOf from './single-staking-pools-balanceof'
 
 const strategies = {
   coordinape,
@@ -297,7 +298,8 @@ const strategies = {
   'has-rock': hasrock,
   'flexa-capacity-staking': flexaCapacityStaking,
   'sunrisegaming-univ2-lp': sunriseGamingUniv2Lp,
-  'sunrisegaming-staking': sunriseGamingStaking
+  'sunrisegaming-staking': sunriseGamingStaking,
+  'single-staking-pools-balanceof': singleStakingPoolsBalanceOf
 };
 
 Object.keys(strategies).forEach(function (strategyName) {

src/strategies/single-staking-pools-balanceof/README.md

@@ -0,0 +1,14 @@
+# single-staking-pools-balanceof
+
+Used for fetching the staked token balance in a single staking pool
+
+Here is an example of parameters:
+
+```json
+{
+  "stakingPoolAddress": [
+      "0x081Ffa6Fa76e738531B3717301F4B636efAe1F1e"
+   ],
+  "decimals": 18
+}
+```

src/strategies/single-staking-pools-balanceof/examples.json

@@ -0,0 +1,20 @@
+[
+  {
+    "name": "Example query",
+    "strategy": {
+      "name": "single-staking-pools-balanceof",
+      "params": {
+        "stakingPoolAddresses": [
+          "0x081Ffa6Fa76e738531B3717301F4B636efAe1F1e"
+        ],
+        "symbol": "DAI",
+        "decimals": 18
+      }
+    },
+    "network": "43114",
+    "addresses": [
+      "0xa598710E9EdA808dF224E14748f6eba374043715"
+    ],
+    "snapshot": 4565540
+  }
+]

src/strategies/single-staking-pools-balanceof/index.ts

@@ -0,0 +1,39 @@
+/* eslint-disable prettier/prettier */
+import { formatUnits } from '@ethersproject/units';
+import { Multicaller } from '../../utils';
+
+export const author = 'PolySwift';
+export const version = '0.1.0';
+
+
+const singleStakingPoolAbi = [
+  'function userInfo(address) view returns (uint256 amount, uint256 rewardDebt)'
+];
+
+export async function strategy(
+  space,
+  network,
+  provider,
+  addresses,
+  options,
+  snapshot
+): Promise<Record<string, number>> {
+  const blockTag = typeof snapshot === 'number' ? snapshot : 'latest';
+
+  const multi = new Multicaller(network, provider, singleStakingPoolAbi, { blockTag });
+
+  options.stakingPoolAddresses.forEach(stakingPoolAddress => {
+    addresses.forEach((address) =>
+      multi.call(address, stakingPoolAddress, 'userInfo', [address])
+    );
+  })
+
+  const result: Record<string, any> = await multi.execute();
+
+  return Object.fromEntries(
+    Object.entries(result).map(([address, userInfo]) => [
+      address,
+      parseFloat(formatUnits(userInfo.amount, options.decimals))
+    ])
+  );
+}