Fixed dynamic pricing for post tokens

libs/evm-protocols/src/common-protocol/utils.ts

@@ -29,13 +29,13 @@ import {
   arbitrum,
   base,
   baseSepolia,
-  soneium,
   blast,
   bsc,
   linea,
   mainnet,
   optimism,
   skaleCalypsoTestnet,
+  soneium,
 } from 'viem/chains';
 import Web3, { AbiInput, TransactionReceipt, Web3 as Web3Type } from 'web3';
 import * as AbiCoder from 'web3-eth-abi';

packages/commonwealth/client/scripts/views/components/NewThreadFormLegacy/NewThreadForm.tsx

@@ -123,28 +123,21 @@ import { launchAndBuyThreadTokenUtility } from './useLaunchAndBuyThreadToken';
 
 const MIN_ETH_FOR_CONTEST_THREAD = 0.0005;
 
+// using sigmoid function
 function calculateConnectorWeightFromUsdPrice(usdPrice: number): number {
   if (usdPrice === 0) {
-    return 830000;
+    return 500000;
   }
-  const initialBalance = BigInt(Math.floor((100 / usdPrice) * 1e18));
-  const graduationBalance = BigInt(Math.floor((1000 / usdPrice) * 1e18));
-  const launchpadLiquidity = BigInt(200_000_000) * BigInt(1e18);
-  const initialSupply = BigInt(1_000_000_000) * BigInt(1e18);
+  const MIN = 50000;
+  const MAX = 100000;
 
-  const supplyNum = Number(initialSupply) / 1e18;
-  const liquidityNum = Number(launchpadLiquidity) / 1e18;
-  const depositNum = Number(graduationBalance - initialBalance) / 1e18;
-  const balanceNum = Number(initialBalance) / 1e18;
+  const steepness = 2.5;
+  const log10Midpoint = 1.5; // log10 midpoint (~$32)
 
-  const connectorRatio = 1 + depositNum / balanceNum;
-  const tokenRatio = liquidityNum / supplyNum + 1;
+  const x = Math.log10(Math.max(usdPrice, 1));
+  const sigma = 1 / (1 + Math.exp(-steepness * (x - log10Midpoint)));
 
-  const w = Math.floor(
-    (1_000_000 * Math.log(tokenRatio)) / Math.log(connectorRatio),
-  );
-
-  return Math.max(10000, Math.min(1000000, w));
+  return Math.round(MIN - (MAX - MIN) * sigma);
 }
 
 interface NewThreadFormProps {
@@ -401,7 +394,7 @@ export const NewThreadForm = forwardRef<
     const { data: launchpadPriceEth } = useGetLaunchpadPriceQuery(
       chainRpc,
       ethChainId,
-      communityToken?.token_address || '',
+      communityToken!.token_address || '',
       !!externalUsdPrice && !isLoadingETHToCurrencyRate,
     );
 

packages/commonwealth/client/scripts/views/components/NewThreadFormLegacy/ToketWidget/ThreadTokenWidget.tsx

@@ -244,7 +244,7 @@ const ThreadTokenWidget = ({
 
     try {
       const amountInWei = parseFloat(safeCurrentAmount) * 1e18;
-      const minAmountOut = safeCurrentTokenGainAmount * 0.95 * 1e18;
+      const minAmountOut = Math.round(safeCurrentTokenGainAmount * 0.95 * 1e18);
 
       const payload = {
         chainRpc,