From cef188c51516b81471c3715b78ee75f83b2053cd Mon Sep 17 00:00:00 2001
From: Robert Bendun <robert@bendun.cc>
Date: Mon, 10 May 2021 23:11:07 +0200
Subject: [PATCH] Red means now lowest amount in store, not 0 amount

---
 src/view/products.js | 37 ++++++++++++++++++++++++++++---------
 1 file changed, 28 insertions(+), 9 deletions(-)

diff --git a/src/view/products.js b/src/view/products.js
index 58dd37a..2055894 100644
--- a/src/view/products.js
+++ b/src/view/products.js
@@ -1,3 +1,14 @@
+function filterReduce2D(array, reducer, filter, init) {
+	let result = init;
+
+	for (let row of array)
+		for (let element of row)
+			if (filter(element))
+				result = reducer(result, element);
+
+	return result;
+}
+
 class Products {
   static instance
 
@@ -6,6 +17,8 @@ class Products {
 
     this.gridProducts = []
     this.gridProductsAmount = []
+		this.min = 50;
+
     for (let i = 0; i < 20; ++i) {
       const gridProductsColumn = []
       const gridProductsAmountColumn = []
@@ -13,7 +26,9 @@ class Products {
       for (let j = 0; j < 9; ++j) {
         if (j % 3 !== 1 && (i+1) % 7 !== 0) {
           gridProductsColumn.push(Product.RANDOM_FROM_REGISTRY());
-          gridProductsAmountColumn.push(floor(random() * 51));
+					const amount = floor(random() * 51);
+          gridProductsAmountColumn.push(amount);
+					this.min = this.min > amount ? amount : this.min;
         } else {
           gridProductsColumn.push('');
           gridProductsAmountColumn.push('');
@@ -42,7 +57,7 @@ class Products {
   }
 
   drawProducts () {
-    for (let [x, line] of Grid.instance.grid.entries()) {
+		for (let [x, line] of Grid.instance.grid.entries()) {
       for (let [y, type] of line.entries()) {
         if (type === GRID_FIELD_TYPE.SHELF) {
           let v = this.drawValue(x, y);
@@ -71,7 +86,8 @@ class Products {
     //   white - full shelf
     //   red   - empty shelf
     const t = Math.cbrt
-    let color = Math.floor(t(v / 50) * 255).toString(16)
+		v = (v - this.min) / (50 - this.min);
+    let color = Math.floor(t(v) * 255).toString(16)
     if (color.length == 1)
       color = "0" + color
     this.ctx.fillStyle = `#ff${color}${color}`;
@@ -126,13 +142,17 @@ class Products {
    * @returns {{product: Product; amount: number} | null } Old shelf content
    */
   exchange(x, y, incomingProduct, incomingAmount) {
-    const product = this.gridProducts[x][y]
-    const amount = this.gridProductsAmount[x][y]
-    this.gridProducts[x][y] = incomingProduct
-    this.gridProductsAmount[x][y] = incomingAmount
+    const product = this.gridProducts[x][y];
+    const amount = this.gridProductsAmount[x][y];
+    this.gridProducts[x][y] = incomingProduct;
+    this.gridProductsAmount[x][y] = incomingAmount;
+
+		this.min = filterReduce2D(this.gridProductsAmount, (p, c) => Math.min(p, c),
+			x => typeof x === 'number', 50);
+
     this.clearCanvas();
     this.drawProducts();
-    return { product, amount }
+    return { product, amount };
   }
 
   /**
@@ -154,7 +174,6 @@ class Products {
     const maybeProduct = this.filter((_product, amount, _i, _j, end) => amount < 50).sort((a, b) => {
 			return a.amount - b.amount
 		})
-		console.log(maybeProduct);
     return maybeProduct.length === 0 ? null : maybeProduct[0]
   }