From c967ddba2e6c6d1ca5f20ea40a6717aa233b4ca0 Mon Sep 17 00:00:00 2001
From: ThatOneCalculator <kainoa@t1c.dev>
Date: Mon, 13 Feb 2023 19:58:33 -0800
Subject: [PATCH] add needed script

---
 packages/client/src/scripts/chart-vline.ts | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 packages/client/src/scripts/chart-vline.ts

diff --git a/packages/client/src/scripts/chart-vline.ts b/packages/client/src/scripts/chart-vline.ts
new file mode 100644
index 000000000..f32144383
--- /dev/null
+++ b/packages/client/src/scripts/chart-vline.ts
@@ -0,0 +1,23 @@
+import { Plugin } from 'chart.js';
+
+export const chartVLine = (vLineColor: string) => ({
+	id: 'vLine',
+	beforeDraw(chart, args, options) {
+		if (chart.tooltip?._active?.length) {
+			const ctx = chart.ctx;
+			const xs = chart.tooltip._active.map(a => a.element.x);
+			const x = xs.reduce((a, b) => a + b, 0) / xs.length;
+			const topY = chart.scales.y.top;
+			const bottomY = chart.scales.y.bottom;
+
+			ctx.save();
+			ctx.beginPath();
+			ctx.moveTo(x, bottomY);
+			ctx.lineTo(x, topY);
+			ctx.lineWidth = 1;
+			ctx.strokeStyle = vLineColor;
+			ctx.stroke();
+			ctx.restore();
+		}
+	},
+}) as Plugin;