add default increment behavior (#157)

Co-authored-by: Noah Zinsmeister <noahwz@gmail.com>

src/pages/AddLiquidity/index.tsx

@@ -106,6 +106,7 @@ export default function AddLiquidity({
   const { independentField, typedValue, startPriceTypedValue } = useV3MintState()
 
   const {
+    pool,
     ticks,
     dependentField,
     price,
@@ -348,7 +349,8 @@ export default function AddLiquidity({
     quoteCurrency ?? undefined,
     feeAmount,
     tickLower,
-    tickUpper
+    tickUpper,
+    pool
   )
 
   return (

src/state/mint/v3/hooks.ts

@@ -420,7 +420,8 @@ export function useRangeHopCallbacks(
   quoteCurrency: Currency | undefined,
   feeAmount: FeeAmount | undefined,
   tickLower: number | undefined,
-  tickUpper: number | undefined
+  tickUpper: number | undefined,
+  pool?: Pool | undefined | null
 ) {
   const { chainId } = useActiveWeb3React()
   const baseToken = useMemo(() => wrappedCurrency(baseCurrency, chainId), [baseCurrency, chainId])
@@ -431,32 +432,52 @@ export function useRangeHopCallbacks(
       const newPrice = tickToPrice(baseToken, quoteToken, tickLower - TICK_SPACINGS[feeAmount])
       return newPrice.toSignificant(5, undefined, Rounding.ROUND_UP)
     }
+    // use pool current tick as starting tick if we have pool but no tick input
+    if (!(typeof tickLower === 'number') && baseToken && quoteToken && feeAmount && pool) {
+      const newPrice = tickToPrice(baseToken, quoteToken, pool.tickCurrent - TICK_SPACINGS[feeAmount])
+      return newPrice.toSignificant(5, undefined, Rounding.ROUND_UP)
+    }
     return ''
-  }, [baseToken, quoteToken, tickLower, feeAmount])
+  }, [baseToken, quoteToken, tickLower, feeAmount, pool])
 
   const getIncrementLower = useCallback(() => {
     if (baseToken && quoteToken && typeof tickLower === 'number' && feeAmount) {
       const newPrice = tickToPrice(baseToken, quoteToken, tickLower + TICK_SPACINGS[feeAmount])
       return newPrice.toSignificant(5, undefined, Rounding.ROUND_UP)
     }
+    // use pool current tick as starting tick if we have pool but no tick input
+    if (!(typeof tickLower === 'number') && baseToken && quoteToken && feeAmount && pool) {
+      const newPrice = tickToPrice(baseToken, quoteToken, pool.tickCurrent + TICK_SPACINGS[feeAmount])
+      return newPrice.toSignificant(5, undefined, Rounding.ROUND_UP)
+    }
     return ''
-  }, [baseToken, quoteToken, tickLower, feeAmount])
+  }, [baseToken, quoteToken, tickLower, feeAmount, pool])
 
   const getDecrementUpper = useCallback(() => {
     if (baseToken && quoteToken && typeof tickUpper === 'number' && feeAmount) {
       const newPrice = tickToPrice(baseToken, quoteToken, tickUpper - TICK_SPACINGS[feeAmount])
       return newPrice.toSignificant(5, undefined, Rounding.ROUND_UP)
     }
+    // use pool current tick as starting tick if we have pool but no tick input
+    if (!(typeof tickUpper === 'number') && baseToken && quoteToken && feeAmount && pool) {
+      const newPrice = tickToPrice(baseToken, quoteToken, pool.tickCurrent - TICK_SPACINGS[feeAmount])
+      return newPrice.toSignificant(5, undefined, Rounding.ROUND_UP)
+    }
     return ''
-  }, [baseToken, quoteToken, tickUpper, feeAmount])
+  }, [baseToken, quoteToken, tickUpper, feeAmount, pool])
 
   const getIncrementUpper = useCallback(() => {
     if (baseToken && quoteToken && typeof tickUpper === 'number' && feeAmount) {
       const newPrice = tickToPrice(baseToken, quoteToken, tickUpper + TICK_SPACINGS[feeAmount])
       return newPrice.toSignificant(5, undefined, Rounding.ROUND_UP)
     }
+    // use pool current tick as starting tick if we have pool but no tick input
+    if (!(typeof tickUpper === 'number') && baseToken && quoteToken && feeAmount && pool) {
+      const newPrice = tickToPrice(baseToken, quoteToken, pool.tickCurrent + TICK_SPACINGS[feeAmount])
+      return newPrice.toSignificant(5, undefined, Rounding.ROUND_UP)
+    }
     return ''
-  }, [baseToken, quoteToken, tickUpper, feeAmount])
+  }, [baseToken, quoteToken, tickUpper, feeAmount, pool])
 
   return { getDecrementLower, getIncrementLower, getDecrementUpper, getIncrementUpper }
 }