# Copyright (c) 2019, Frappe Technologies Pvt. Ltd. and Contributors
# License: MIT. See LICENSE
import frappe

@frappe.whitelist()
def get_list_settings(doctype):
	try:
		return frappe.get_cached_doc("List View Settings", doctype)
	except frappe.DoesNotExistError:
		frappe.clear_messages()

@frappe.whitelist()
def set_list_settings(doctype, values):
	try:
		doc = frappe.get_doc("List View Settings", doctype)
	except frappe.DoesNotExistError:
		doc = frappe.new_doc("List View Settings")
		doc.name = doctype
		frappe.clear_messages()
	doc.update(frappe.parse_json(values))
	doc.save()


@frappe.whitelist()
def get_group_by_count(doctype, current_filters, field):
	current_filters = frappe.parse_json(current_filters)
	subquery_condition = ''

	subquery = frappe.get_all(doctype, filters=current_filters, run=False)
	if field == 'assigned_to':
		subquery_condition = ' and `tabToDo`.reference_name in ({subquery})'.format(subquery = subquery)
		return frappe.db.sql("""select `tabToDo`.owner as name, count(*) as count
			from
				`tabToDo`, `tabUser`
			where
				`tabToDo`.status!='Cancelled' and
				`tabToDo`.owner = `tabUser`.name and
				`tabUser`.user_type = 'System User'
				{subquery_condition}
			group by
				`tabToDo`.owner
			order by
				count desc
			limit 50""".format(subquery_condition = subquery_condition), as_dict=True)
	else:
		return frappe.db.get_list(doctype,
			filters=current_filters,
			group_by='`tab{0}`.{1}'.format(doctype, field),
			fields=['count(*) as count', '`{}` as name'.format(field)],
			order_by='count desc',
			limit=50,
		)