update srm fees

components/FeeDiscountsTable.tsx

@@ -75,7 +75,13 @@ const FeeDiscountsTable = () => {
               </div>
             </div>
             <div className="text-th-fgd-3 text-normal">
-              {rates ? percentFormat.format(rates.takerWithRebate) : null}
+              {rates
+                ? new Intl.NumberFormat(undefined, {
+                    style: 'percent',
+                    minimumFractionDigits: 2,
+                    maximumFractionDigits: 3,
+                  }).format(rates.takerWithRebate)
+                : null}
             </div>
           </div>
         </div>

components/trade_form/AdvancedTradeForm.tsx

@@ -1063,7 +1063,7 @@ export default function AdvancedTradeForm({
               <span className="hidden md:block md:px-1">|</span>
               <div>
                 {' '}
-                {t('taker-fee')}: {takerFee * 100}%
+                {t('taker-fee')}: {(takerFee * 100).toFixed(3)}%
               </div>
             </div>
           )}

hooks/useSrmAccount.tsx

@@ -8,10 +8,46 @@ import {
   MSRM_DECIMALS,
   SRM_DECIMALS,
 } from '@project-serum/serum/lib/token-instructions'
-import { getFeeTier, getFeeRates } from '@project-serum/serum'
 import { parseTokenAccountData } from '../utils/tokens'
 import { useEffect } from 'react'
 
+export function getFeeRates(feeTier: number): { taker: number; maker: number } {
+  if (feeTier === 1) {
+    return { taker: 0.00039, maker: 0 }
+  } else if (feeTier === 2) {
+    return { taker: 0.00038, maker: 0 }
+  } else if (feeTier === 3) {
+    return { taker: 0.00036, maker: 0 }
+  } else if (feeTier === 4) {
+    return { taker: 0.00034, maker: 0 }
+  } else if (feeTier === 5) {
+    return { taker: 0.00032, maker: 0 }
+  } else if (feeTier === 6) {
+    // MSRM
+    return { taker: 0.0003, maker: 0 }
+  }
+  // Base
+  return { taker: 0.0004, maker: 0 }
+}
+
+export function getFeeTier(msrmBalance: number, srmBalance: number): number {
+  if (msrmBalance >= 1) {
+    return 6
+  } else if (srmBalance >= 1_000_000) {
+    return 5
+  } else if (srmBalance >= 100_000) {
+    return 4
+  } else if (srmBalance >= 10_000) {
+    return 3
+  } else if (srmBalance >= 1_000) {
+    return 2
+  } else if (srmBalance >= 100) {
+    return 1
+  } else {
+    return 0
+  }
+}
+
 const useSrmAccount = () => {
   const mangoGroup = useMangoStore((s) => s.selectedMangoGroup.current)
   const connection = useMangoStore((s) => s.connection.current)