OHLC rework

src/charts/chart-misc.js

@@ -1,13 +1,17 @@
 import {useChartOrderStore} from "@/orderbuild.js";
 
-export function nearestOhlcStart(time) {
-    // todo subtract OHLC root time
-    const period = useChartOrderStore().intervalSecs
-    return Math.round(time / period) * period
+
+const OHLC_START = new Date(1231027200*1000)  // Sunday January 4th, 2009 just before Bitcoin Genesis
+
+
+export function nearestOhlcStart(time, periodSeconds=null) {
+    if (periodSeconds===null)
+        periodSeconds = useChartOrderStore().intervalSecs
+    return Math.round((time-OHLC_START) / periodSeconds) * periodSeconds + OHLC_START
 }
 
 export function pointsToOhlcStart(points) {
     return points === null ? null : points.map((p) => {
         return {time: nearestOhlcStart(p.time), price: p.price}
     })
-}
+}