prevent total liquidity stat from going negative

2022-06-15 11:33:58 -05:00 · 2022-06-15 11:33:58 -05:00 · c3b15ac5dc
commit c3b15ac5dc
parent cc4b9abd9f
1 changed files with 7 additions and 1 deletions
--- a/functions/src/withdraw-liquidity.ts
+++ b/functions/src/withdraw-liquidity.ts
@ -78,7 +78,13 @@ export const withdrawLiquidity = functions
          } as Partial<User>)

          const newPool = subtractObjects(contract.pool, userShares)
-          const newTotalLiquidity = contract.totalLiquidity - payout
+
+          const minPoolShares = Math.min(...Object.values(newPool))
+          const adjustedTotal = contract.totalLiquidity - payout
+
+          // total liquidity is a bogus number; use minPoolShares to prevent from going negative
+          const newTotalLiquidity = Math.max(adjustedTotal, minPoolShares)
+
          trans.update(contractDoc, {
            pool: newPool,
            totalLiquidity: newTotalLiquidity,