refactor: barebones methods with basic logic

(cherry picked from commit b05b378ef0)

erpnext/accounts/report/invalid_ledger_entries/invalid_ledger_entries.py

@@ -1,8 +1,10 @@
 # Copyright (c) 2024, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 
-# import frappe
-from frappe import _
+import frappe
+from frappe import _, qb
+from frappe.query_builder import Criterion
+from frappe.query_builder.custom import ConstantColumn
 
 
 def execute(filters: dict | None = None):
@@ -12,8 +14,10 @@ def execute(filters: dict | None = None):
 	dictionary and should return columns and data. It is called by the framework
 	every time the report is refreshed or a filter is updated.
 	"""
+	validate_filters(filters)
+
 	columns = get_columns()
-	data = get_data()
+	data = get_data(filters)
 
 	return columns, data
 
@@ -24,25 +28,110 @@ def get_columns() -> list[dict]:
 	One field definition per column, just like a DocType field definition.
 	"""
 	return [
+		{"label": _("Voucher Type"), "fieldname": "voucher_type", "fieldtype": "Link", "options": "DocType"},
 		{
-			"label": _("Column 1"),
-			"fieldname": "column_1",
-			"fieldtype": "Data",
-		},
-		{
-			"label": _("Column 2"),
-			"fieldname": "column_2",
-			"fieldtype": "Int",
+			"label": _("Voucher No"),
+			"fieldname": "voucher_no",
+			"fieldtype": "Dynamic Link",
+			"options": "voucher_type",
 		},
 	]
 
 
-def get_data() -> list[list]:
+def get_data(filters) -> list[list]:
 	"""Return data for the report.
 
 	The report data is a list of rows, with each row being a list of cell values.
 	"""
-	return [
-		["Row 1", 1],
-		["Row 2", 2],
-	]
+	active_vouchers = get_active_vouchers_for_period(filters)
+	invalid_vouchers = identify_cancelled_vouchers(active_vouchers)
+
+	return invalid_vouchers
+
+
+def identify_cancelled_vouchers(active_vouchers: list[dict] | list | None = None) -> list[dict]:
+	cancelled_vouchers = []
+	if active_vouchers:
+		# Group by voucher types and use single query to identify cancelled vouchers
+		vtypes = set([x.voucher_type for x in active_vouchers])
+
+		for _t in vtypes:
+			_names = [x.voucher_no for x in active_vouchers if x.voucher_type == _t]
+			dt = qb.DocType(_t)
+			non_active_vouchers = (
+				qb.from_(dt)
+				.select(ConstantColumn(_t).as_("doctype"), dt.name)
+				.where(dt.docstatus.ne(1) & dt.name.isin(_names))
+				.run()
+			)
+			if non_active_vouchers:
+				cancelled_vouchers.extend(non_active_vouchers)
+	return cancelled_vouchers
+
+
+def validate_filters(filters: dict | None = None):
+	if not filters:
+		frappe.throw(_("Filters missing"))
+
+	if not filters.company:
+		frappe.throw(_("Company is mandatory"))
+
+	if filters.from_date > filters.to_date:
+		frappe.throw(_("Start Date should be lower than End Date"))
+
+
+def build_query_filters(filters: dict | None = None) -> list:
+	qb_filters = []
+	if filters:
+		if filters.account:
+			qb_filters.append(qb.Field("account").isin(filters.account))
+
+		if filters.voucher_no:
+			qb_filters.append(qb.Field("voucher_no").eq(filters.voucher_no))
+
+	return qb_filters
+
+
+def get_active_vouchers_for_period(filters: dict | None = None) -> list[dict]:
+	uniq_vouchers = []
+
+	if filters:
+		gle = qb.DocType("GL Entry")
+		ple = qb.DocType("Payment Ledger Entry")
+
+		qb_filters = build_query_filters(filters)
+
+		gl_vouchers = (
+			qb.from_(gle)
+			.select(gle.voucher_type)
+			.distinct()
+			.select(gle.voucher_no)
+			.distinct()
+			.where(
+				gle.is_cancelled.eq(0)
+				& gle.company.eq(filters.company)
+				& gle.posting_date[filters.from_date : filters.to_date]
+			)
+			.where(Criterion.all(qb_filters))
+			.run(as_dict=True)
+		)
+
+		pl_vouchers = (
+			qb.from_(ple)
+			.select(ple.voucher_type)
+			.distinct()
+			.select(ple.voucher_no)
+			.distinct()
+			.where(
+				ple.delinked.eq(0)
+				& ple.company.eq(filters.company)
+				& ple.posting_date[filters.from_date : filters.to_date]
+			)
+			.where(Criterion.all(qb_filters))
+			.run(as_dict=True)
+		)
+
+		uniq_vouchers.extend(gl_vouchers)
+		uniq_vouchers.extend(pl_vouchers)
+
+	return uniq_vouchers