ladder orders!

src/orderbuild.js

@@ -2,16 +2,23 @@ import {routeInverted} from "@/misc.js";
 import {newLimitConstraint, newTimeConstraint, TimeMode} from "@/blockchain/orderlib.js";
 import {useOrderStore, useStore} from "@/store/store.js";
 
-export function limitConstraint() {
-    const s = useStore()
-    if (!s.limitPrice)
-        return null
-    const route = s.route
+
+export const maxFraction = 65535n // by contract definition of uint16 fraction
+
+
+export function limitConstraint(price=null) {
+    const os = useOrderStore()
+    if( price === null ) {
+        price = os.limitPrice
+        if (!price)
+            return null
+    }
+    const route = os.route
     const inverted = routeInverted(route)
-    const isAbove = s.limitIsMinimum ^ inverted
+    const isAbove = os.limitIsMinimum ^ inverted
     const isRatio = false // todo ratios
-    const decimals = 10 ** (s.tokenA.decimals - s.tokenB.decimals)
-    const limit = inverted ? decimals / s.limitPrice : s.limitPrice / decimals
+    const decimals = 10 ** (os.tokenA.decimals - os.tokenB.decimals)
+    const limit = inverted ? decimals / price : price / decimals
     return newLimitConstraint(isAbove, isRatio, limit)
 }
 
@@ -32,9 +39,8 @@ export function timesliceTranches() {
     } else {
         window = Math.round(duration / n)
     }
-    const oneHundredPercent = 65535n // by contract definition of uint16 fraction
-    const ceil = oneHundredPercent % BigInt(n) ? 1n : 0n
-    const amtPerTranche = oneHundredPercent / BigInt(n) + ceil
+    const ceil = maxFraction % BigInt(n) ? 1n : 0n
+    const amtPerTranche = maxFraction / BigInt(n) + ceil
     duration -= 15  // subtract 15 seconds so the last tranche completes before the deadline
     for (let i = 0; i < n; i++) {
         const start = Math.floor(i * (duration / Math.max((n - 1), 1)))