sync chart scale

frontend/src/pages/HistoricalCalendarPrices/HistoricalCalendarPrices.tsx

@@ -1,5 +1,5 @@
-import { signal } from "@preact/signals";
-import { useCallback, useEffect } from "preact/hooks";
+import { signal, computed } from "@preact/signals";
+import { useEffect } from "preact/hooks";
 import {trpc} from '../../trpc.js';
 import {
   Chart as ChartJS,
@@ -35,6 +35,13 @@ const historicalCalendarExitQuoteChartData = signal([]);
 const chosenLookbackPeriodStart = signal("2022-01-01");
 const chosenLookbackPeriodEnd = signal("2024-01-01");
 
+const maxChartPrice = computed(()=>
+  Math.max(
+    Math.max.apply(null, historicalCalendarQuoteChartData.value.map(d=>d.y)),
+    Math.max.apply(null, historicalCalendarExitQuoteChartData.value.map(d=>d.y)),
+  )
+);
+
 
 const refreshHistoricalStockQuoteChartData = ()=>{
   trpc.getHistoricalStockQuoteChartData
@@ -212,7 +219,9 @@ export function HistoricalCalendarPrices(){
                       callback: function(value, index, ticks) {
                         return (new Date(value as number*1000)).toISOString().substring(0,10);
                       }
-                    }
+                    },
+                    min: (new Date(chosenLookbackPeriodStart.value)).getTime()/1000,
+                    max: (new Date(chosenLookbackPeriodEnd.value)).getTime()/1000,
                   },
                   y: {
                     beginAtZero: false,
@@ -271,7 +280,9 @@ export function HistoricalCalendarPrices(){
                       callback: function(value, index, ticks) {
                         return (new Date(value as number*1000)).toISOString().substring(0,10);
                       }
-                    }
+                    },
+                    min: (new Date(chosenLookbackPeriodStart.value)).getTime()/1000,
+                    max: (new Date(chosenLookbackPeriodEnd.value)).getTime()/1000,
                   },
                   y: {
                     beginAtZero: true,
@@ -279,7 +290,9 @@ export function HistoricalCalendarPrices(){
                       callback: function(value, index, ticks) {
                         return "$"+value.toString();
                       }
-                    }
+                    },
+                    min: 0,
+                    max: maxChartPrice.value,
                   }
                 },
                 plugins: {
@@ -325,7 +338,7 @@ export function HistoricalCalendarPrices(){
                       callback: function(value, index, ticks) {
                         return value.toString()+"%";
                       }
-                    }
+                    },
                   },
                   y: {
                     beginAtZero: true,
@@ -333,7 +346,9 @@ export function HistoricalCalendarPrices(){
                       callback: function(value, index, ticks) {
                         return "$"+value.toString();
                       }
-                    }
+                    },
+                    min: 0,
+                    max: maxChartPrice.value,
                   },
                 },
                 elements: {