Merge pull request #32150 from s-aga-r/refactor/report/bom-stock-calculated

refactor: BOM Stock Calculated report, fix required-qty
diff --git a/erpnext/manufacturing/report/bom_stock_calculated/bom_stock_calculated.js b/erpnext/manufacturing/report/bom_stock_calculated/bom_stock_calculated.js
index 0d5bfcb..a0fd91e 100644
--- a/erpnext/manufacturing/report/bom_stock_calculated/bom_stock_calculated.js
+++ b/erpnext/manufacturing/report/bom_stock_calculated/bom_stock_calculated.js
@@ -11,17 +11,24 @@
 			"options": "BOM",
 			"reqd": 1
 		},
-        	{
-	            "fieldname": "qty_to_make",
-        	    "label": __("Quantity to Make"),
-        	    "fieldtype": "Int",
-        	    "default": "1"
-	       },
-
-		 {
+		{
+			"fieldname": "warehouse",
+			"label": __("Warehouse"),
+			"fieldtype": "Link",
+			"options": "Warehouse",
+		},
+		{
+			"fieldname": "qty_to_make",
+			"label": __("Quantity to Make"),
+			"fieldtype": "Float",
+			"default": "1.0",
+			"reqd": 1
+		},
+		{
 			"fieldname": "show_exploded_view",
 			"label": __("Show exploded view"),
-			"fieldtype": "Check"
+			"fieldtype": "Check",
+			"default": false,
 		}
 	]
 }
diff --git a/erpnext/manufacturing/report/bom_stock_calculated/bom_stock_calculated.py b/erpnext/manufacturing/report/bom_stock_calculated/bom_stock_calculated.py
index 933be3e..ec4b25c 100644
--- a/erpnext/manufacturing/report/bom_stock_calculated/bom_stock_calculated.py
+++ b/erpnext/manufacturing/report/bom_stock_calculated/bom_stock_calculated.py
@@ -4,29 +4,31 @@
 
 import frappe
 from frappe import _
+from frappe.query_builder.functions import IfNull, Sum
 from frappe.utils.data import comma_and
+from pypika.terms import ExistsCriterion
 
 
 def execute(filters=None):
-	# if not filters: filters = {}
 	columns = get_columns()
-	summ_data = []
+	data = []
 
-	data = get_bom_stock(filters)
+	bom_data = get_bom_data(filters)
 	qty_to_make = filters.get("qty_to_make")
-
 	manufacture_details = get_manufacturer_records()
-	for row in data:
-		reqd_qty = qty_to_make * row.actual_qty
-		last_pur_price = frappe.db.get_value("Item", row.item_code, "last_purchase_rate")
 
-		summ_data.append(get_report_data(last_pur_price, reqd_qty, row, manufacture_details))
-	return columns, summ_data
+	for row in bom_data:
+		required_qty = qty_to_make * row.qty_per_unit
+		last_purchase_rate = frappe.db.get_value("Item", row.item_code, "last_purchase_rate")
+
+		data.append(get_report_data(last_purchase_rate, required_qty, row, manufacture_details))
+
+	return columns, data
 
 
-def get_report_data(last_pur_price, reqd_qty, row, manufacture_details):
-	to_build = row.to_build if row.to_build > 0 else 0
-	diff_qty = to_build - reqd_qty
+def get_report_data(last_purchase_rate, required_qty, row, manufacture_details):
+	qty_per_unit = row.qty_per_unit if row.qty_per_unit > 0 else 0
+	difference_qty = row.actual_qty - required_qty
 	return [
 		row.item_code,
 		row.description,
@@ -34,85 +36,126 @@
 		comma_and(
 			manufacture_details.get(row.item_code, {}).get("manufacturer_part", []), add_quotes=False
 		),
+		qty_per_unit,
 		row.actual_qty,
-		str(to_build),
-		reqd_qty,
-		diff_qty,
-		last_pur_price,
+		required_qty,
+		difference_qty,
+		last_purchase_rate,
 	]
 
 
 def get_columns():
-	"""return columns"""
-	columns = [
-		_("Item") + ":Link/Item:100",
-		_("Description") + "::150",
-		_("Manufacturer") + "::250",
-		_("Manufacturer Part Number") + "::250",
-		_("Qty") + ":Float:50",
-		_("Stock Qty") + ":Float:100",
-		_("Reqd Qty") + ":Float:100",
-		_("Diff Qty") + ":Float:100",
-		_("Last Purchase Price") + ":Float:100",
+	return [
+		{
+			"fieldname": "item",
+			"label": _("Item"),
+			"fieldtype": "Link",
+			"options": "Item",
+			"width": 120,
+		},
+		{
+			"fieldname": "description",
+			"label": _("Description"),
+			"fieldtype": "Data",
+			"width": 150,
+		},
+		{
+			"fieldname": "manufacturer",
+			"label": _("Manufacturer"),
+			"fieldtype": "Data",
+			"width": 120,
+		},
+		{
+			"fieldname": "manufacturer_part_number",
+			"label": _("Manufacturer Part Number"),
+			"fieldtype": "Data",
+			"width": 150,
+		},
+		{
+			"fieldname": "qty_per_unit",
+			"label": _("Qty Per Unit"),
+			"fieldtype": "Float",
+			"width": 110,
+		},
+		{
+			"fieldname": "available_qty",
+			"label": _("Available Qty"),
+			"fieldtype": "Float",
+			"width": 120,
+		},
+		{
+			"fieldname": "required_qty",
+			"label": _("Required Qty"),
+			"fieldtype": "Float",
+			"width": 120,
+		},
+		{
+			"fieldname": "difference_qty",
+			"label": _("Difference Qty"),
+			"fieldtype": "Float",
+			"width": 130,
+		},
+		{
+			"fieldname": "last_purchase_rate",
+			"label": _("Last Purchase Rate"),
+			"fieldtype": "Float",
+			"width": 160,
+		},
 	]
-	return columns
 
 
-def get_bom_stock(filters):
-	conditions = ""
-	bom = filters.get("bom")
-
-	table = "`tabBOM Item`"
-	qty_field = "qty"
-
+def get_bom_data(filters):
 	if filters.get("show_exploded_view"):
-		table = "`tabBOM Explosion Item`"
-		qty_field = "stock_qty"
+		bom_item_table = "BOM Explosion Item"
+	else:
+		bom_item_table = "BOM Item"
+
+	bom_item = frappe.qb.DocType(bom_item_table)
+	bin = frappe.qb.DocType("Bin")
+
+	query = (
+		frappe.qb.from_(bom_item)
+		.left_join(bin)
+		.on(bom_item.item_code == bin.item_code)
+		.select(
+			bom_item.item_code,
+			bom_item.description,
+			bom_item.qty_consumed_per_unit.as_("qty_per_unit"),
+			IfNull(Sum(bin.actual_qty), 0).as_("actual_qty"),
+		)
+		.where((bom_item.parent == filters.get("bom")) & (bom_item.parenttype == "BOM"))
+		.groupby(bom_item.item_code)
+	)
 
 	if filters.get("warehouse"):
 		warehouse_details = frappe.db.get_value(
 			"Warehouse", filters.get("warehouse"), ["lft", "rgt"], as_dict=1
 		)
+
 		if warehouse_details:
-			conditions += (
-				" and exists (select name from `tabWarehouse` wh \
-				where wh.lft >= %s and wh.rgt <= %s and ledger.warehouse = wh.name)"
-				% (warehouse_details.lft, warehouse_details.rgt)
+			wh = frappe.qb.DocType("Warehouse")
+			query = query.where(
+				ExistsCriterion(
+					frappe.qb.from_(wh)
+					.select(wh.name)
+					.where(
+						(wh.lft >= warehouse_details.lft)
+						& (wh.rgt <= warehouse_details.rgt)
+						& (bin.warehouse == wh.name)
+					)
+				)
 			)
 		else:
-			conditions += " and ledger.warehouse = %s" % frappe.db.escape(filters.get("warehouse"))
+			query = query.where(bin.warehouse == frappe.db.escape(filters.get("warehouse")))
 
-	else:
-		conditions += ""
-
-	return frappe.db.sql(
-		"""
-			SELECT
-				bom_item.item_code,
-				bom_item.description,
-				bom_item.{qty_field},
-				ifnull(sum(ledger.actual_qty), 0) as actual_qty,
-				ifnull(sum(FLOOR(ledger.actual_qty / bom_item.{qty_field})), 0) as to_build
-			FROM
-				{table} AS bom_item
-				LEFT JOIN `tabBin` AS ledger
-				ON bom_item.item_code = ledger.item_code
-				{conditions}
-
-			WHERE
-				bom_item.parent = '{bom}' and bom_item.parenttype='BOM'
-
-			GROUP BY bom_item.item_code""".format(
-			qty_field=qty_field, table=table, conditions=conditions, bom=bom
-		),
-		as_dict=1,
-	)
+	return query.run(as_dict=True)
 
 
 def get_manufacturer_records():
 	details = frappe.get_all(
 		"Item Manufacturer", fields=["manufacturer", "manufacturer_part_no", "item_code"]
 	)
+
 	manufacture_details = frappe._dict()
 	for detail in details:
 		dic = manufacture_details.setdefault(detail.get("item_code"), {})
diff --git a/erpnext/manufacturing/report/bom_stock_calculated/test_bom_stock_calculated.py b/erpnext/manufacturing/report/bom_stock_calculated/test_bom_stock_calculated.py
new file mode 100644
index 0000000..8ad980f
--- /dev/null
+++ b/erpnext/manufacturing/report/bom_stock_calculated/test_bom_stock_calculated.py
@@ -0,0 +1,115 @@
+# Copyright (c) 2022, Frappe Technologies Pvt. Ltd. and contributors
+# For license information, please see license.txt
+
+from frappe.tests.utils import FrappeTestCase
+
+from erpnext.manufacturing.doctype.production_plan.test_production_plan import make_bom
+from erpnext.manufacturing.report.bom_stock_calculated.bom_stock_calculated import (
+	execute as bom_stock_calculated_report,
+)
+from erpnext.stock.doctype.item.test_item import make_item
+
+
+class TestBOMStockCalculated(FrappeTestCase):
+	def setUp(self):
+		self.fg_item, self.rm_items = create_items()
+		self.boms = create_boms(self.fg_item, self.rm_items)
+
+	def test_bom_stock_calculated(self):
+		qty_to_make = 10
+
+		# Case 1: When Item(s) Qty and Stock Qty are equal.
+		data = bom_stock_calculated_report(
+			filters={
+				"qty_to_make": qty_to_make,
+				"bom": self.boms[0].name,
+			}
+		)[1]
+		expected_data = get_expected_data(self.boms[0], qty_to_make)
+		self.assertSetEqual(set(tuple(x) for x in data), set(tuple(x) for x in expected_data))
+
+		# Case 2: When Item(s) Qty and Stock Qty are different and BOM Qty is 1.
+		data = bom_stock_calculated_report(
+			filters={
+				"qty_to_make": qty_to_make,
+				"bom": self.boms[1].name,
+			}
+		)[1]
+		expected_data = get_expected_data(self.boms[1], qty_to_make)
+		self.assertSetEqual(set(tuple(x) for x in data), set(tuple(x) for x in expected_data))
+
+		# Case 3: When Item(s) Qty and Stock Qty are different and BOM Qty is greater than 1.
+		data = bom_stock_calculated_report(
+			filters={
+				"qty_to_make": qty_to_make,
+				"bom": self.boms[2].name,
+			}
+		)[1]
+		expected_data = get_expected_data(self.boms[2], qty_to_make)
+		self.assertSetEqual(set(tuple(x) for x in data), set(tuple(x) for x in expected_data))
+
+
+def create_items():
+	fg_item = make_item(properties={"is_stock_item": 1}).name
+	rm_item1 = make_item(
+		properties={
+			"is_stock_item": 1,
+			"standard_rate": 100,
+			"opening_stock": 100,
+			"last_purchase_rate": 100,
+		}
+	).name
+	rm_item2 = make_item(
+		properties={
+			"is_stock_item": 1,
+			"standard_rate": 200,
+			"opening_stock": 200,
+			"last_purchase_rate": 200,
+		}
+	).name
+
+	return fg_item, [rm_item1, rm_item2]
+
+
+def create_boms(fg_item, rm_items):
+	def update_bom_items(bom, uom, conversion_factor):
+		for item in bom.items:
+			item.uom = uom
+			item.conversion_factor = conversion_factor
+
+		return bom
+
+	bom1 = make_bom(item=fg_item, quantity=1, raw_materials=rm_items, rm_qty=10)
+
+	bom2 = make_bom(item=fg_item, quantity=1, raw_materials=rm_items, rm_qty=10, do_not_submit=True)
+	bom2 = update_bom_items(bom2, "Box", 10)
+	bom2.save()
+	bom2.submit()
+
+	bom3 = make_bom(item=fg_item, quantity=2, raw_materials=rm_items, rm_qty=10, do_not_submit=True)
+	bom3 = update_bom_items(bom3, "Box", 10)
+	bom3.save()
+	bom3.submit()
+
+	return [bom1, bom2, bom3]
+
+
+def get_expected_data(bom, qty_to_make):
+	expected_data = []
+
+	for idx in range(len(bom.items)):
+		expected_data.append(
+			[
+				bom.items[idx].item_code,
+				bom.items[idx].item_code,
+				"",
+				"",
+				float(bom.items[idx].stock_qty / bom.quantity),
+				float(100 * (idx + 1)),
+				float(qty_to_make * (bom.items[idx].stock_qty / bom.quantity)),
+				float((100 * (idx + 1)) - (qty_to_make * (bom.items[idx].stock_qty / bom.quantity))),
+				float(100 * (idx + 1)),
+			]
+		)
+
+	return expected_data