fix(pos): edge case while closing pos (#31748)

* fix(pos): edge case while closing pos

* fix: linter

* fix: setting posting_time in pos invoice merge log
diff --git a/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.js b/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.js
index 98f3420..1d596c1 100644
--- a/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.js
+++ b/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.js
@@ -36,6 +36,15 @@
 		});
 
 		set_html_data(frm);
+
+		if (frm.doc.docstatus == 1) {
+			if (!frm.doc.posting_date) {
+				frm.set_value("posting_date", frappe.datetime.nowdate());
+			}
+			if (!frm.doc.posting_time) {
+				frm.set_value("posting_time", frappe.datetime.now_time());
+			}
+		}
 	},
 
 	refresh: function(frm) {
diff --git a/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.json b/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.json
index d6e35c6..9d15e6c 100644
--- a/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.json
+++ b/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.json
@@ -11,6 +11,7 @@
   "period_end_date",
   "column_break_3",
   "posting_date",
+  "posting_time",
   "pos_opening_entry",
   "status",
   "section_break_5",
@@ -51,7 +52,6 @@
    "fieldtype": "Datetime",
    "in_list_view": 1,
    "label": "Period End Date",
-   "read_only": 1,
    "reqd": 1
   },
   {
@@ -219,6 +219,13 @@
    "fieldtype": "Small Text",
    "label": "Error",
    "read_only": 1
+  },
+  {
+   "fieldname": "posting_time",
+   "fieldtype": "Time",
+   "label": "Posting Time",
+   "no_copy": 1,
+   "reqd": 1
   }
  ],
  "is_submittable": 1,
@@ -228,10 +235,11 @@
    "link_fieldname": "pos_closing_entry"
   }
  ],
- "modified": "2021-10-20 16:19:25.340565",
+ "modified": "2022-08-01 11:37:14.991228",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "POS Closing Entry",
+ "naming_rule": "Expression (old style)",
  "owner": "Administrator",
  "permissions": [
   {
@@ -278,5 +286,6 @@
  ],
  "sort_field": "modified",
  "sort_order": "DESC",
+ "states": [],
  "track_changes": 1
 }
\ No newline at end of file
diff --git a/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.py b/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.py
index 49aab0d..655c4ec 100644
--- a/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.py
+++ b/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.py
@@ -15,6 +15,9 @@
 
 class POSClosingEntry(StatusUpdater):
 	def validate(self):
+		self.posting_date = self.posting_date or frappe.utils.nowdate()
+		self.posting_time = self.posting_time or frappe.utils.nowtime()
+
 		if frappe.db.get_value("POS Opening Entry", self.pos_opening_entry, "status") != "Open":
 			frappe.throw(_("Selected POS Opening Entry should be open."), title=_("Invalid Opening Entry"))
 
diff --git a/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.json b/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.json
index d762087..a059455 100644
--- a/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.json
+++ b/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.json
@@ -6,6 +6,7 @@
  "engine": "InnoDB",
  "field_order": [
   "posting_date",
+  "posting_time",
   "merge_invoices_based_on",
   "column_break_3",
   "pos_closing_entry",
@@ -105,12 +106,19 @@
    "label": "Customer Group",
    "mandatory_depends_on": "eval:doc.merge_invoices_based_on == 'Customer Group'",
    "options": "Customer Group"
+  },
+  {
+   "fieldname": "posting_time",
+   "fieldtype": "Time",
+   "label": "Posting Time",
+   "no_copy": 1,
+   "reqd": 1
   }
  ],
  "index_web_pages_for_search": 1,
  "is_submittable": 1,
  "links": [],
- "modified": "2021-09-14 11:17:19.001142",
+ "modified": "2022-08-01 11:36:42.456429",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "POS Invoice Merge Log",
@@ -173,5 +181,6 @@
  ],
  "sort_field": "modified",
  "sort_order": "DESC",
+ "states": [],
  "track_changes": 1
 }
\ No newline at end of file
diff --git a/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py b/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py
index 5003a1d..81a234a 100644
--- a/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py
+++ b/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py
@@ -9,7 +9,7 @@
 from frappe.core.page.background_jobs.background_jobs import get_info
 from frappe.model.document import Document
 from frappe.model.mapper import map_child_doc, map_doc
-from frappe.utils import cint, flt, getdate, nowdate
+from frappe.utils import cint, flt, get_time, getdate, nowdate, nowtime
 from frappe.utils.background_jobs import enqueue
 from frappe.utils.scheduler import is_scheduler_inactive
 
@@ -99,6 +99,7 @@
 		sales_invoice.is_consolidated = 1
 		sales_invoice.set_posting_time = 1
 		sales_invoice.posting_date = getdate(self.posting_date)
+		sales_invoice.posting_time = get_time(self.posting_time)
 		sales_invoice.save()
 		sales_invoice.submit()
 
@@ -115,6 +116,7 @@
 		credit_note.is_consolidated = 1
 		credit_note.set_posting_time = 1
 		credit_note.posting_date = getdate(self.posting_date)
+		credit_note.posting_time = get_time(self.posting_time)
 		# TODO: return could be against multiple sales invoice which could also have been consolidated?
 		# credit_note.return_against = self.consolidated_invoice
 		credit_note.save()
@@ -402,6 +404,9 @@
 				merge_log.posting_date = (
 					getdate(closing_entry.get("posting_date")) if closing_entry else nowdate()
 				)
+				merge_log.posting_time = (
+					get_time(closing_entry.get("posting_time")) if closing_entry else nowtime()
+				)
 				merge_log.customer = customer
 				merge_log.pos_closing_entry = closing_entry.get("name") if closing_entry else None