percentile 80, bufferPercent multiply

Author: MilanKomsa

services/blockchain-service/blockchain-service-base.js

@@ -1402,8 +1402,8 @@ export default class BlockchainServiceBase {
         try {
             // eth_feeHistory params: blockCount, newestBlock, rewardPercentiles
             // [50] = median priority fee per block
-            const feeHistory = await web3Instance.eth.getFeeHistory(blockCount, 'latest', [50]);
-
+            const feeHistory = await web3Instance.eth.getFeeHistory(blockCount, 'latest', [80]);
+            
             // Extract median priority fees from each block (reward[blockIndex][percentileIndex])
             const priorityFees = feeHistory.reward
                 ? feeHistory.reward.map((blockRewards) => BigInt(blockRewards[0] || 0))
@@ -1426,13 +1426,14 @@ export default class BlockchainServiceBase {
 
     /**
      * Apply buffer percentage to a gas price
-     * @param {BigInt} gasPrice - Gas price in wei
+     * @param {BigInt} maxBaseFee - base fee in wei
+     * @param {BigInt} maxPriorityFee - priority fee in wei
      * @param {number} gasPriceBufferPercent - Buffer percentage to add
      * @returns {BigInt} Gas price with buffer applied
      */
-    applyGasPriceBuffer(gasPrice, gasPriceBufferPercent) {
-        if (!gasPriceBufferPercent) return gasPrice;
-        return (gasPrice * BigInt(100 + Number(gasPriceBufferPercent))) / 100n;
+    applyGasPriceBuffer(maxBaseFee, maxPriorityFee, gasPriceBufferPercent) {
+        if (!gasPriceBufferPercent) return maxBaseFee + maxPriorityFee;
+        return ((maxBaseFee * BigInt(100 + Number(gasPriceBufferPercent))) / 100n) + maxPriorityFee;
     }
 
     /**
@@ -1468,7 +1469,7 @@ export default class BlockchainServiceBase {
         const maxBaseFee = baseFees.reduce((max, bf) => (bf > max ? bf : max), 0n);
         const maxPriorityFee = priorityFees.reduce((max, pf) => (pf > max ? pf : max), 0n);
 
-        return this.applyGasPriceBuffer(maxBaseFee + maxPriorityFee, gasPriceBufferPercent);
+        return this.applyGasPriceBuffer(maxBaseFee, maxPriorityFee, gasPriceBufferPercent);
     }
 
     /**