From 03f9ba45eaf284f1ff54763b186825cf5542e0b6 Mon Sep 17 00:00:00 2001
From: Bernd Bestel <bernd@berrnd.de>
Date: Wed, 16 Aug 2023 17:05:18 +0200
Subject: [PATCH] Fixed initial product QU conversion handling (fixes #2312)

---
 migrations/0231.sql | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 migrations/0231.sql

diff --git a/migrations/0231.sql b/migrations/0231.sql
new file mode 100644
index 00000000..3e7b3045
--- /dev/null
+++ b/migrations/0231.sql
@@ -0,0 +1,33 @@
+DROP TRIGGER default_qu_conversions;
+CREATE TRIGGER products_default_qu_conversions AFTER INSERT ON products
+BEGIN
+	-- Create product specific 1:1 conversions when QU stock != QU purchase/consume/price
+	-- and when no default QU conversion apply
+
+	-- with qu_id_stock != qu_id_purchase
+	INSERT INTO quantity_unit_conversions
+		(from_qu_id, to_qu_id, factor, product_id)
+	SELECT p.qu_id_purchase, p.qu_id_stock, 1, p.id
+	FROM products p
+	WHERE p.id = NEW.id
+		AND p.qu_id_stock != qu_id_purchase
+		AND NOT EXISTS(SELECT 1 FROM quantity_unit_conversions_resolved WHERE product_id = p.id AND from_qu_id = p.qu_id_stock AND to_qu_id = p.qu_id_purchase);
+
+	-- with qu_id_stock != qu_id_consume
+	INSERT INTO quantity_unit_conversions
+		(from_qu_id, to_qu_id, factor, product_id)
+	SELECT p.qu_id_consume, p.qu_id_stock, 1, p.id
+	FROM products p
+	WHERE p.id = NEW.id
+		AND p.qu_id_stock != qu_id_consume
+		AND NOT EXISTS(SELECT 1 FROM quantity_unit_conversions_resolved WHERE product_id = p.id AND from_qu_id = p.qu_id_stock AND to_qu_id = p.qu_id_consume);
+
+	-- with qu_id_stock != qu_id_price
+	INSERT INTO quantity_unit_conversions
+		(from_qu_id, to_qu_id, factor, product_id)
+	SELECT p.qu_id_price, p.qu_id_stock, 1, p.id
+	FROM products p
+	WHERE p.id = NEW.id
+		AND p.qu_id_stock != qu_id_price
+		AND NOT EXISTS(SELECT 1 FROM quantity_unit_conversions_resolved WHERE product_id = p.id AND from_qu_id = p.qu_id_stock AND to_qu_id = p.qu_id_price);
+END;