From b687eddff5b68bd4855243f609a9dda3d755e900 Mon Sep 17 00:00:00 2001
From: Jing Li <lym125@gmail.com>
Date: Thu, 3 Nov 2022 11:52:39 +0800
Subject: [PATCH] Update

---
 app/Http/Controllers/ChartController.php | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/app/Http/Controllers/ChartController.php b/app/Http/Controllers/ChartController.php
index 6e1ff37..25842b4 100644
--- a/app/Http/Controllers/ChartController.php
+++ b/app/Http/Controllers/ChartController.php
@@ -175,19 +175,20 @@ class ChartController extends Controller
         $series = $materiels->groupBy('name')->map(function ($materiels, $name) use ($quarters) {
             $materiels = $materiels->mapWithKeys(fn ($item) => [$item['quarter'] => $item]);
 
-            $lowestPrices = [];
-            $highestPrices = [];
+            $data = [];
+            $diffs = [];
 
             foreach ($quarters as $key => $value) {
                 $materiel = $materiels[$key] ?? null;
-                $lowestPrices[] = $materiel?->lowest_price;
-                $highestPrices[] = $materiel?->highest_price;
+
+                $data[] = $materiel?->lowest_price;
+                $diffs[] = $materiel ? ($materiel->highest_price - $materiel->lowest_price) : null;
             }
 
             return [
                 'name' => $name,
-                'lowest_prices' => $lowestPrices,
-                'highest_prices' => $highestPrices,
+                'data' => $data,
+                'diffs' => $diffs,
             ];
         });