account_invoice_refund_link: translate post_init_hook into SQL

account_invoice_refund_link/hooks.py

@@ -5,34 +5,52 @@
 from odoo import SUPERUSER_ID, api
 
 
-def match_origin_lines(refund):
-    """Try to match lines by product or by description."""
-    invoice = refund.reversed_entry_id
-    invoice_lines = invoice.invoice_line_ids
-    for refund_line in refund.invoice_line_ids:
-        for invoice_line in invoice_lines:
-            match = (
-                refund_line.product_id
-                and refund_line.product_id == invoice_line.product_id
-                or refund_line.name == invoice_line.name
-            )
-            if match:
-                invoice_lines -= invoice_line
-                refund_line.origin_line_id = invoice_line.id
-                break
-        if not invoice_lines:
-            break
-
 
 def post_init_hook(cr, registry):
     with api.Environment.manage():
         env = api.Environment(cr, SUPERUSER_ID, {})
-        # Linking all refund invoices to its original invoices
-        refunds = env["account.move"].search(
-            [
-                ("move_type", "in", ("out_refund", "in_refund")),
-                ("reversed_entry_id", "!=", False),
-            ]
-        )
-        for refund in refunds:
-            match_origin_lines(refund)
+        SQL = """
+WITH refund_lines AS (
+    SELECT
+        aml.id AS refund_line_id,
+        aml.move_id AS refund_id,
+        aml.product_id,
+        aml.name,
+        am.reversed_entry_id AS invoice_id
+    FROM
+        account_move_line aml
+    JOIN
+        account_move am ON aml.move_id = am.id
+    WHERE
+        am.move_type IN ('out_refund', 'in_refund')
+        AND am.reversed_entry_id IS NOT NULL
+),
+matched_lines AS (
+    SELECT
+        rl.refund_line_id,
+        il.id AS invoice_line_id,
+        ROW_NUMBER() OVER (
+            PARTITION BY rl.refund_line_id
+            ORDER BY
+                CASE
+                    WHEN rl.product_id = il.product_id THEN 1
+                    WHEN rl.name = il.name THEN 2
+                    ELSE 3
+                END
+        ) AS match_priority
+    FROM
+        refund_lines rl
+    JOIN
+        account_move_line il ON rl.invoice_id = il.move_id
+    WHERE
+        (rl.product_id IS NOT NULL AND rl.product_id = il.product_id)
+        OR rl.name = il.name
+)
+UPDATE account_move_line aml
+SET origin_line_id = ml.invoice_line_id
+FROM matched_lines ml
+WHERE
+    aml.id = ml.refund_line_id
+    AND ml.match_priority = 1;
+"""
+        env.cr.execute(SQL)