From cf39e598e14e72e4a1c98485b46bc1b69ecb9afa Mon Sep 17 00:00:00 2001
From: Bernd Bestel <bernd@berrnd.de>
Date: Sat, 13 Nov 2021 17:35:32 +0100
Subject: [PATCH] Prefill due date also on location change

---
 public/viewjs/purchase.js | 76 ++++++++++++++++++++++++---------------
 1 file changed, 48 insertions(+), 28 deletions(-)

diff --git a/public/viewjs/purchase.js b/public/viewjs/purchase.js
index 78368475..948ef40a 100644
--- a/public/viewjs/purchase.js
+++ b/public/viewjs/purchase.js
@@ -286,34 +286,7 @@ if (Grocy.Components.ProductPicker !== undefined)
 						$("#tare-weight-handling-info").addClass("d-none");
 					}
 
-					if (Grocy.FeatureFlags.GROCY_FEATURE_FLAG_STOCK_BEST_BEFORE_DATE_TRACKING)
-					{
-						var dueDays;
-						if (Grocy.FeatureFlags.GROCY_FEATURE_FLAG_STOCK_PRODUCT_FREEZING && BoolVal(productDetails.location.is_freezer))
-						{
-							dueDays = productDetails.product.default_best_before_days_after_freezing;
-						}
-						else
-						{
-							dueDays = productDetails.product.default_best_before_days;
-						}
-
-						dueDays = parseFloat(dueDays);
-						if (dueDays != 0)
-						{
-							if (dueDays == -1)
-							{
-								if (!$("#datetimepicker-shortcut").is(":checked"))
-								{
-									$("#datetimepicker-shortcut").click();
-								}
-							}
-							else
-							{
-								Grocy.Components.DateTimePicker.SetValue(moment().add(dueDays, 'days').format('YYYY-MM-DD'));
-							}
-						}
-					}
+					PrefillBestBeforeDate(productDetails.product, productDetails.location);
 
 					if (Grocy.FeatureFlags.GROCY_FEATURE_FLAG_LABEL_PRINTER)
 					{
@@ -407,6 +380,53 @@ if (Grocy.Components.ProductPicker !== undefined)
 	});
 }
 
+function PrefillBestBeforeDate(product, location)
+{
+	if (Grocy.FeatureFlags.GROCY_FEATURE_FLAG_STOCK_BEST_BEFORE_DATE_TRACKING)
+	{
+		var dueDays;
+		if (Grocy.FeatureFlags.GROCY_FEATURE_FLAG_STOCK_PRODUCT_FREEZING && BoolVal(location.is_freezer))
+		{
+			dueDays = product.default_best_before_days_after_freezing;
+		}
+		else
+		{
+			dueDays = product.default_best_before_days;
+		}
+
+		dueDays = parseFloat(dueDays);
+		if (dueDays != 0)
+		{
+			if (dueDays == -1)
+			{
+				if (!$("#datetimepicker-shortcut").is(":checked"))
+				{
+					$("#datetimepicker-shortcut").click();
+				}
+			}
+			else
+			{
+				Grocy.Components.DateTimePicker.SetValue(moment().add(dueDays, 'days').format('YYYY-MM-DD'));
+			}
+		}
+	}
+}
+
+Grocy.Components.LocationPicker.GetPicker().on('change', function(e)
+{
+	if (Grocy.FeatureFlags.GROCY_FEATURE_FLAG_STOCK_PRODUCT_FREEZING)
+	{
+		Grocy.Api.Get('objects/locations/' + Grocy.Components.LocationPicker.GetValue(),
+			function(location)
+			{
+				PrefillBestBeforeDate(CurrentProductDetails.product, location);
+			},
+			function(xhr)
+			{ }
+		);
+	}
+});
+
 $('#display_amount').val(parseFloat(Grocy.UserSettings.stock_default_purchase_amount));
 RefreshLocaleNumberInput();
 $(".input-group-productamountpicker").trigger("change");