price constraints working

src/blockchain/orderlib.js

@@ -1,4 +1,3 @@
-
 import {uint32max, uint64max} from "@/misc.js";
 import {ethers} from "ethers";
 
@@ -49,18 +48,14 @@ export const Exchange = {
 }
 
 // enum ConstraintMode {
-//     Time,       // 0
-//     Limit,      // 1
-//     Trailing,   // 2
-//     Barrier,    // 3
-//     Line        // 4
+//     Time,     // 0
+//     Line,     // 1
+//     Barrier   // 2
 // }
 export const ConstraintMode = {
     Time: 0,
-    Limit: 1,
-    Trailing: 2,
-    Barrier: 3,
-    Line: 4,
+    Line: 1,
+    Barrier: 2,
 }
 
 // struct Constraint {
@@ -98,12 +93,6 @@ export function newTimeConstraint(startMode, start, endMode, end) {
     )
 }
 
-// struct PriceConstraint {
-//     bool isAbove;
-//     bool isRatio;
-//     uint160 valueSqrtX96;
-// }
-
 // struct LineConstraint {
 //     bool isAbove;
 //     bool isRatio;
@@ -112,3 +101,19 @@ export function newTimeConstraint(startMode, start, endMode, end) {
 //     int160 slopeSqrtX96; // price change per second
 // }
 
+export function newLimitConstraint( isAbove, isRatio, price ) {
+    return newLineConstraint(isAbove, isRatio, 0, price, 0)
+}
+
+export function newLineConstraint( isAbove, isRatio, time, price, slope ) {
+    return encodeConstraint(
+        ConstraintMode.Line,
+        ['bool', 'bool', 'uint32', 'uint160', 'int160'],
+        [isAbove, isRatio, time, sqrtX96(price), sqrtX96(slope)]
+    )
+}
+
+export function sqrtX96(value) {
+    return BigInt(Math.round(Math.sqrt(value * 2 ** (96*2))))
+}
+