Merge branch 'develop' into iff-invoicing
diff --git a/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.js b/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.js
index 0b7cff3..2235298 100644
--- a/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.js
+++ b/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.js
@@ -135,7 +135,7 @@
 			callback: function(r) {
 				if(!r.exc) {
 					clearInterval(frm.page["interval"]);
-					frm.page.set_indicator(__('Import Successfull'), 'blue');
+					frm.page.set_indicator(__('Import Successful'), 'blue');
 					create_reset_button(frm);
 				}
 			}
diff --git a/erpnext/accounts/doctype/pos_invoice/pos_invoice.py b/erpnext/accounts/doctype/pos_invoice/pos_invoice.py
index 8680b71..ba68df7 100644
--- a/erpnext/accounts/doctype/pos_invoice/pos_invoice.py
+++ b/erpnext/accounts/doctype/pos_invoice/pos_invoice.py
@@ -21,7 +21,7 @@
 class POSInvoice(SalesInvoice):
 	def __init__(self, *args, **kwargs):
 		super(POSInvoice, self).__init__(*args, **kwargs)
-	
+
 	def validate(self):
 		if not cint(self.is_pos):
 			frappe.throw(_("POS Invoice should have {} field checked.").format(frappe.bold("Include Payment")))
@@ -58,7 +58,7 @@
 		if self.redeem_loyalty_points and self.loyalty_points:
 			self.apply_loyalty_points()
 		self.set_status(update=True)
-	
+
 	def on_cancel(self):
 		# run on cancel method of selling controller
 		super(SalesInvoice, self).on_cancel()
@@ -68,10 +68,10 @@
 			against_psi_doc = frappe.get_doc("POS Invoice", self.return_against)
 			against_psi_doc.delete_loyalty_point_entry()
 			against_psi_doc.make_loyalty_point_entry()
-		
+
 	def validate_stock_availablility(self):
 		allow_negative_stock = frappe.db.get_value('Stock Settings', None, 'allow_negative_stock')
-		
+
 		for d in self.get('items'):
 			if d.serial_no:
 				filters = {
@@ -89,11 +89,11 @@
 				for s in serial_nos:
 					if s in reserved_serial_nos:
 						invalid_serial_nos.append(s)
-				
+
 				if len(invalid_serial_nos):
 					multiple_nos = 's' if len(invalid_serial_nos) > 1 else ''
 					frappe.throw(_("Row #{}: Serial No{}. {} has already been transacted into another POS Invoice. \
-						Please select valid serial no.".format(d.idx, multiple_nos, 
+						Please select valid serial no.".format(d.idx, multiple_nos,
 						frappe.bold(', '.join(invalid_serial_nos)))), title=_("Not Available"))
 			else:
 				if allow_negative_stock:
@@ -105,9 +105,9 @@
 						.format(d.idx, frappe.bold(d.item_code), frappe.bold(d.warehouse))), title=_("Not Available"))
 				elif flt(available_stock) < flt(d.qty):
 					frappe.msgprint(_('Row #{}: Stock quantity not enough for Item Code: {} under warehouse {}. \
-						Available quantity {}.'.format(d.idx, frappe.bold(d.item_code), 
+						Available quantity {}.'.format(d.idx, frappe.bold(d.item_code),
 						frappe.bold(d.warehouse), frappe.bold(d.qty))), title=_("Not Available"))
-	
+
 	def validate_serialised_or_batched_item(self):
 		for d in self.get("items"):
 			serialized = d.get("has_serial_no")
@@ -125,7 +125,7 @@
 			if batched and no_batch_selected:
 				frappe.throw(_('Row #{}: No batch selected against item: {}. Please select a batch or remove it to complete transaction.'
 						.format(d.idx, frappe.bold(d.item_code))), title=_("Invalid Item"))
-	
+
 	def validate_return_items(self):
 		if not self.get("is_return"): return
 
@@ -158,7 +158,7 @@
 				frappe.throw(_("Row #{0} (Payment Table): Amount must be positive").format(entry.idx))
 			if self.is_return and entry.amount > 0:
 				frappe.throw(_("Row #{0} (Payment Table): Amount must be negative").format(entry.idx))
-	
+
 	def validate_pos_return(self):
 		if self.is_pos and self.is_return:
 			total_amount_in_payments = 0
@@ -167,12 +167,12 @@
 			invoice_total = self.rounded_total or self.grand_total
 			if total_amount_in_payments < invoice_total:
 				frappe.throw(_("Total payments amount can't be greater than {}".format(-invoice_total)))
-	
+
 	def validate_loyalty_transaction(self):
 		if self.redeem_loyalty_points and (not self.loyalty_redemption_account or not self.loyalty_redemption_cost_center):
 			expense_account, cost_center = frappe.db.get_value('Loyalty Program', self.loyalty_program, ["expense_account", "cost_center"])
 			if not self.loyalty_redemption_account:
-				self.loyalty_redemption_account = expense_account 
+				self.loyalty_redemption_account = expense_account
 			if not self.loyalty_redemption_cost_center:
 				self.loyalty_redemption_cost_center = cost_center
 
@@ -212,7 +212,7 @@
 
 		if update:
 			self.db_set('status', self.status, update_modified = update_modified)
-	
+
 	def set_pos_fields(self, for_validate=False):
 		"""Set retail related fields from POS Profiles"""
 		from erpnext.stock.get_item_details import get_pos_profile_item_details, get_pos_profile
@@ -315,25 +315,25 @@
 
 @frappe.whitelist()
 def get_stock_availability(item_code, warehouse):
-	latest_sle = frappe.db.sql("""select qty_after_transaction 
-		from `tabStock Ledger Entry` 
+	latest_sle = frappe.db.sql("""select qty_after_transaction
+		from `tabStock Ledger Entry`
 		where item_code = %s and warehouse = %s
 		order by posting_date desc, posting_time desc
 		limit 1""", (item_code, warehouse), as_dict=1)
-	
+
 	pos_sales_qty = frappe.db.sql("""select sum(p_item.qty) as qty
 		from `tabPOS Invoice` p, `tabPOS Invoice Item` p_item
-		where p.name = p_item.parent 
-		and p.consolidated_invoice is NULL 
+		where p.name = p_item.parent
+		and p.consolidated_invoice is NULL
 		and p.docstatus = 1
 		and p_item.docstatus = 1
 		and p_item.item_code = %s
 		and p_item.warehouse = %s
 		""", (item_code, warehouse), as_dict=1)
-	
+
 	sle_qty = latest_sle[0].qty_after_transaction or 0 if latest_sle else 0
 	pos_sales_qty = pos_sales_qty[0].qty or 0 if pos_sales_qty else 0
-	
+
 	if sle_qty and pos_sales_qty and sle_qty > pos_sales_qty:
 		return sle_qty - pos_sales_qty
 	else:
@@ -360,14 +360,14 @@
 	merge_log = frappe.new_doc("POS Invoice Merge Log")
 	merge_log.posting_date = getdate(nowdate())
 	for inv in invoices:
-		inv_data = frappe.db.get_values("POS Invoice", inv.get('name'), 
+		inv_data = frappe.db.get_values("POS Invoice", inv.get('name'),
 			["customer", "posting_date", "grand_total"], as_dict=1)[0]
 		merge_log.customer = inv_data.customer
 		merge_log.append("pos_invoices", {
 			'pos_invoice': inv.get('name'),
 			'customer': inv_data.customer,
 			'posting_date': inv_data.posting_date,
-			'grand_total': inv_data.grand_total 
+			'grand_total': inv_data.grand_total
 		})
 
 	if merge_log.get('pos_invoices'):
diff --git a/erpnext/accounts/report/financial_statements.py b/erpnext/accounts/report/financial_statements.py
index 3785ebf..d5b8cdb 100644
--- a/erpnext/accounts/report/financial_statements.py
+++ b/erpnext/accounts/report/financial_statements.py
@@ -14,7 +14,7 @@
 from erpnext.accounts.report.utils import get_currency, convert_to_presentation_currency
 from erpnext.accounts.utils import get_fiscal_year
 from frappe import _
-from frappe.utils import (flt, getdate, get_first_day, add_months, add_days, formatdate, cstr)
+from frappe.utils import (flt, getdate, get_first_day, add_months, add_days, formatdate, cstr, cint)
 
 from six import itervalues
 from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import get_accounting_dimensions, get_dimension_with_children
@@ -46,7 +46,7 @@
 	start_date = year_start_date
 	months = get_months(year_start_date, year_end_date)
 
-	for i in range(math.ceil(months / months_to_add)):
+	for i in range(cint(math.ceil(months / months_to_add))):
 		period = frappe._dict({
 			"from_date": start_date
 		})
diff --git a/erpnext/controllers/queries.py b/erpnext/controllers/queries.py
index 37b7e31..c88bf66 100644
--- a/erpnext/controllers/queries.py
+++ b/erpnext/controllers/queries.py
@@ -497,24 +497,18 @@
 	conditions, bin_conditions = [], []
 	filter_dict = get_doctype_wise_filters(filters)
 
-	sub_query = """ select round(`tabBin`.actual_qty, 2) from `tabBin`
-		where `tabBin`.warehouse = `tabWarehouse`.name
-		{bin_conditions} """.format(
-		bin_conditions=get_filters_cond(doctype, filter_dict.get("Bin"),
-			bin_conditions, ignore_permissions=True))
-
 	query = """select `tabWarehouse`.name,
-		CONCAT_WS(" : ", "Actual Qty", ifnull( ({sub_query}), 0) ) as actual_qty
-		from `tabWarehouse`
+		CONCAT_WS(" : ", "Actual Qty", ifnull(round(`tabBin`.actual_qty, 2), 0 )) actual_qty
+		from `tabWarehouse` left join `tabBin`
+		on `tabBin`.warehouse = `tabWarehouse`.name {bin_conditions}
 		where
-		   `tabWarehouse`.`{key}` like {txt}
+			`tabWarehouse`.`{key}` like {txt}
 			{fcond} {mcond}
-		order by
-			`tabWarehouse`.name desc
+		order by ifnull(`tabBin`.actual_qty, 0) desc
 		limit
 			{start}, {page_len}
 		""".format(
-			sub_query=sub_query,
+			bin_conditions=get_filters_cond(doctype, filter_dict.get("Bin"),bin_conditions, ignore_permissions=True),
 			key=searchfield,
 			fcond=get_filters_cond(doctype, filter_dict.get("Warehouse"), conditions),
 			mcond=get_match_cond(doctype),
diff --git a/erpnext/hr/doctype/department/department.json b/erpnext/hr/doctype/department/department.json
index a54c1d1..dcb6a74 100644
--- a/erpnext/hr/doctype/department/department.json
+++ b/erpnext/hr/doctype/department/department.json
@@ -17,10 +17,10 @@
   "payroll_cost_center",
   "column_break_9",
   "leave_block_list",
-  "leave_section",
+  "approvers",
   "leave_approvers",
-  "expense_section",
   "expense_approvers",
+  "shift_request_approver",
   "lft",
   "rgt",
   "old_parent"
@@ -33,14 +33,18 @@
    "label": "Department",
    "oldfieldname": "department_name",
    "oldfieldtype": "Data",
-   "reqd": 1
+   "reqd": 1,
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "parent_department",
    "fieldtype": "Link",
    "in_list_view": 1,
    "label": "Parent Department",
-   "options": "Department"
+   "options": "Department",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "company",
@@ -48,7 +52,9 @@
    "in_standard_filter": 1,
    "label": "Company",
    "options": "Company",
-   "reqd": 1
+   "reqd": 1,
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "bold": 1,
@@ -56,17 +62,23 @@
    "fieldname": "is_group",
    "fieldtype": "Check",
    "in_list_view": 1,
-   "label": "Is Group"
+   "label": "Is Group",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "default": "0",
    "fieldname": "disabled",
    "fieldtype": "Check",
-   "label": "Disabled"
+   "label": "Disabled",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "section_break_4",
-   "fieldtype": "Section Break"
+   "fieldtype": "Section Break",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "description": "Days for which Holidays are blocked for this department.",
@@ -74,31 +86,25 @@
    "fieldtype": "Link",
    "in_list_view": 1,
    "label": "Leave Block List",
-   "options": "Leave Block List"
+   "options": "Leave Block List",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
-   "fieldname": "leave_section",
-   "fieldtype": "Section Break",
-   "label": "Leave Approvers"
-  },
-  {
-   "description": "The first Leave Approver in the list will be set as the default Leave Approver.",
    "fieldname": "leave_approvers",
    "fieldtype": "Table",
    "label": "Leave Approver",
-   "options": "Department Approver"
+   "options": "Department Approver",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
-   "fieldname": "expense_section",
-   "fieldtype": "Section Break",
-   "label": "Expense Approvers"
-  },
-  {
-   "description": "The first Expense Approver in the list will be set as the default Expense Approver.",
    "fieldname": "expense_approvers",
    "fieldtype": "Table",
    "label": "Expense Approver",
-   "options": "Department Approver"
+   "options": "Department Approver",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "lft",
@@ -106,7 +112,9 @@
    "hidden": 1,
    "label": "lft",
    "print_hide": 1,
-   "read_only": 1
+   "read_only": 1,
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "rgt",
@@ -114,7 +122,9 @@
    "hidden": 1,
    "label": "rgt",
    "print_hide": 1,
-   "read_only": 1
+   "read_only": 1,
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "old_parent",
@@ -122,28 +132,52 @@
    "hidden": 1,
    "ignore_user_permissions": 1,
    "label": "Old Parent",
-   "print_hide": 1
+   "print_hide": 1,
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "column_break_3",
-   "fieldtype": "Column Break"
+   "fieldtype": "Column Break",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "payroll_cost_center",
    "fieldtype": "Link",
    "label": "Payroll Cost Center",
-   "options": "Cost Center"
+   "options": "Cost Center",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "column_break_9",
-   "fieldtype": "Column Break"
+   "fieldtype": "Column Break",
+   "show_days": 1,
+   "show_seconds": 1
+  },
+  {
+   "description": "The first Approver in the list will be set as the default Approver.",
+   "fieldname": "approvers",
+   "fieldtype": "Section Break",
+   "label": "Approvers",
+   "show_days": 1,
+   "show_seconds": 1
+  },
+  {
+   "fieldname": "shift_request_approver",
+   "fieldtype": "Table",
+   "label": "Shift Request Approver",
+   "options": "Department Approver",
+   "show_days": 1,
+   "show_seconds": 1
   }
  ],
  "icon": "fa fa-sitemap",
  "idx": 1,
  "is_tree": 1,
  "links": [],
- "modified": "2020-05-05 18:49:28.503931",
+ "modified": "2020-06-23 15:42:00.563272",
  "modified_by": "Administrator",
  "module": "HR",
  "name": "Department",
diff --git a/erpnext/hr/doctype/department_approver/department_approver.py b/erpnext/hr/doctype/department_approver/department_approver.py
index afd54b8..9b2de0e 100644
--- a/erpnext/hr/doctype/department_approver/department_approver.py
+++ b/erpnext/hr/doctype/department_approver/department_approver.py
@@ -15,12 +15,12 @@
 def get_approvers(doctype, txt, searchfield, start, page_len, filters):
 
 	if not filters.get("employee"):
-		frappe.throw(_("Please select Employee Record first."))
+		frappe.throw(_("Please select Employee first."))
 
 	approvers = []
 	department_details = {}
 	department_list = []
-	employee = frappe.get_value("Employee", filters.get("employee"), ["department", "leave_approver", "expense_approver"], as_dict=True)
+	employee = frappe.get_value("Employee", filters.get("employee"), ["department", "leave_approver", "expense_approver", "shift_request_approver"], as_dict=True)
 
 	employee_department = filters.get("department") or employee.department
 	if employee_department:
@@ -37,13 +37,18 @@
 	if filters.get("doctype") == "Expense Claim" and employee.expense_approver:
 		approvers.append(frappe.db.get_value("User", employee.expense_approver, ['name', 'first_name', 'last_name']))
 
+	if filters.get("doctype") == "Shift Request" and employee.shift_request_approver:
+		approvers.append(frappe.db.get_value("User", employee.shift_request_approver, ['name', 'first_name', 'last_name']))
 
 	if filters.get("doctype") == "Leave Application":
 		parentfield = "leave_approvers"
 		field_name = "Leave Approver"
-	else:
+	elif filters.get("doctype") == "Expense Claim":
 		parentfield = "expense_approvers"
 		field_name = "Expense Approver"
+	elif filters.get("doctype") == "Shift Request":
+		parentfield = "shift_request_approver"
+		field_name = "Shift Request Approver"
 	if department_list:
 		for d in department_list:
 			approvers += frappe.db.sql("""select user.name, user.first_name, user.last_name from
diff --git a/erpnext/hr/doctype/employee/employee.json b/erpnext/hr/doctype/employee/employee.json
index f2afe06..8c02e4f 100644
--- a/erpnext/hr/doctype/employee/employee.json
+++ b/erpnext/hr/doctype/employee/employee.json
@@ -51,10 +51,14 @@
   "column_break_31",
   "grade",
   "branch",
+  "approvers_section",
+  "expense_approver",
+  "leave_approver",
+  "column_break_45",
+  "shift_request_approver",
   "attendance_and_leave_details",
   "leave_policy",
   "attendance_device_id",
-  "leave_approver",
   "column_break_44",
   "holiday_list",
   "default_shift",
@@ -62,7 +66,6 @@
   "salary_mode",
   "payroll_cost_center",
   "column_break_52",
-  "expense_approver",
   "bank_name",
   "bank_ac_no",
   "health_insurance_section",
@@ -806,14 +809,37 @@
    "fieldname": "expense_approver",
    "fieldtype": "Link",
    "label": "Expense Approver",
-   "options": "User"
+   "options": "User",
+   "show_days": 1,
+   "show_seconds": 1
+  },
+  {
+   "fieldname": "approvers_section",
+   "fieldtype": "Section Break",
+   "label": "Approvers",
+   "show_days": 1,
+   "show_seconds": 1
+  },
+  {
+   "fieldname": "column_break_45",
+   "fieldtype": "Column Break",
+   "show_days": 1,
+   "show_seconds": 1
+  },
+  {
+   "fieldname": "shift_request_approver",
+   "fieldtype": "Link",
+   "label": "Shift Request Approver",
+   "options": "User",
+   "show_days": 1,
+   "show_seconds": 1
   }
  ],
  "icon": "fa fa-user",
  "idx": 24,
  "image_field": "image",
  "links": [],
- "modified": "2020-07-03 21:28:04.109189",
+ "modified": "2020-07-28 01:36:04.109189",
  "modified_by": "Administrator",
  "module": "HR",
  "name": "Employee",
diff --git a/erpnext/hr/doctype/shift_assignment/shift_assignment.json b/erpnext/hr/doctype/shift_assignment/shift_assignment.json
index 72cbba8..ce2a10f 100644
--- a/erpnext/hr/doctype/shift_assignment/shift_assignment.json
+++ b/erpnext/hr/doctype/shift_assignment/shift_assignment.json
@@ -10,9 +10,11 @@
   "employee",
   "employee_name",
   "shift_type",
+  "status",
   "column_break_3",
   "company",
-  "date",
+  "start_date",
+  "end_date",
   "shift_request",
   "department",
   "amended_from"
@@ -60,12 +62,6 @@
    "reqd": 1
   },
   {
-   "fieldname": "date",
-   "fieldtype": "Date",
-   "in_list_view": 1,
-   "label": "Date"
-  },
-  {
    "fieldname": "shift_request",
    "fieldtype": "Link",
    "label": "Shift Request",
@@ -80,11 +76,36 @@
    "options": "Shift Assignment",
    "print_hide": 1,
    "read_only": 1
+  },
+  {
+   "fieldname": "start_date",
+   "fieldtype": "Date",
+   "in_list_view": 1,
+   "label": "Start Date",
+   "reqd": 1
+  },
+  {
+   "allow_on_submit": 1,
+   "fieldname": "end_date",
+   "fieldtype": "Date",
+   "label": "End Date",
+   "show_days": 1,
+   "show_seconds": 1
+  },
+  {
+   "allow_on_submit": 1,
+   "default": "Active",
+   "fieldname": "status",
+   "fieldtype": "Select",
+   "label": "Status",
+   "options": "Active\nInactive",
+   "show_days": 1,
+   "show_seconds": 1
   }
  ],
  "is_submittable": 1,
  "links": [],
- "modified": "2019-12-12 15:49:06.956901",
+ "modified": "2020-06-15 14:27:54.310773",
  "modified_by": "Administrator",
  "module": "HR",
  "name": "Shift Assignment",
diff --git a/erpnext/hr/doctype/shift_assignment/shift_assignment.py b/erpnext/hr/doctype/shift_assignment/shift_assignment.py
index 40c78cd..f8b7334 100644
--- a/erpnext/hr/doctype/shift_assignment/shift_assignment.py
+++ b/erpnext/hr/doctype/shift_assignment/shift_assignment.py
@@ -11,38 +11,63 @@
 from erpnext.hr.doctype.holiday_list.holiday_list import is_holiday
 from datetime import timedelta, datetime
 
-class OverlapError(frappe.ValidationError): pass
-
 class ShiftAssignment(Document):
 	def validate(self):
 		self.validate_overlapping_dates()
 
+		if self.end_date and self.end_date <= self.start_date:
+			frappe.throw(_("End Date must not be lesser than Start Date"))
+
 	def validate_overlapping_dates(self):
-			if not self.name:
-				self.name = "New Shift Assignment"
+		if not self.name:
+			self.name = "New Shift Assignment"
 
-			d = frappe.db.sql("""
-				select
-					name, shift_type, date
-				from `tabShift Assignment`
-				where employee = %(employee)s and docstatus < 2
-				and date = %(date)s
-				and name != %(name)s""", {
-					"employee": self.employee,
-					"shift_type": self.shift_type,
-					"date": self.date,
-					"name": self.name
-				}, as_dict = 1)
+		condition = """and (
+				end_date is null
+				or
+					%(start_date)s between start_date and end_date
+		"""
 
-			for date_overlap in d:
-				if date_overlap['name']:
-					self.throw_overlap_error(date_overlap)
+		if self.end_date:
+			condition  += """ or
+					%(end_date)s between start_date and end_date
+					or
+					start_date between %(start_date)s and %(end_date)s
+				) """
+		else:
+			condition += """ ) """
 
-	def throw_overlap_error(self, d):
-		msg = _("Employee {0} has already applied for {1} on {2} : ").format(self.employee,
-			d['shift_type'], formatdate(d['date'])) \
-			+ """ <b><a href="#Form/Shift Assignment/{0}">{0}</a></b>""".format(d["name"])
-		frappe.throw(msg, OverlapError)
+		assigned_shifts = frappe.db.sql("""
+			select name, shift_type, start_date ,end_date, docstatus, status
+			from `tabShift Assignment`
+			where
+				employee=%(employee)s and docstatus = 1
+				and name != %(name)s
+				and status = "Active"
+				{0}
+		""".format(condition), {
+			"employee": self.employee,
+			"shift_type": self.shift_type,
+			"start_date": self.start_date,
+			"end_date": self.end_date,
+			"name": self.name
+		}, as_dict = 1)
+
+		if len(assigned_shifts):
+			self.throw_overlap_error(assigned_shifts[0])
+
+	def throw_overlap_error(self, shift_details):
+		shift_details = frappe._dict(shift_details)
+		if shift_details.docstatus == 1 and shift_details.status == "Active":
+			msg = _("Employee {0} already has Active Shift {1}: {2}").format(frappe.bold(self.employee), frappe.bold(self.shift_type), frappe.bold(shift_details.name))
+		if shift_details.start_date:
+			msg += _(" from {0}").format(getdate(self.start_date).strftime("%d-%m-%Y"))
+			title = "Ongoing Shift"
+			if shift_details.end_date:
+				msg += _(" to {0}").format(getdate(self.end_date).strftime("%d-%m-%Y"))
+				title = "Active Shift"
+		if msg:
+			frappe.throw(msg, title=title)
 
 @frappe.whitelist()
 def get_events(start, end, filters=None):
@@ -62,19 +87,22 @@
 	return events
 
 def add_assignments(events, start, end, conditions=None):
-	query = """select name, date, employee_name, 
+	query = """select name, start_date, end_date, employee_name,
 		employee, docstatus
 		from `tabShift Assignment` where
-		date <= %(date)s
-		and docstatus < 2"""
+		start_date >= %(start_date)s
+		or end_date <=  %(end_date)s
+		or (%(start_date)s between start_date and end_date and %(end_date)s between start_date and end_date)
+		and docstatus = 1"""
 	if conditions:
 		query += conditions
 
-	for d in frappe.db.sql(query, {"date":start, "date":end}, as_dict=True):
+	for d in frappe.db.sql(query, {"start_date":start, "end_date":end}, as_dict=True):
 		e = {
 			"name": d.name,
 			"doctype": "Shift Assignment",
-			"date": d.date,
+			"start_date": d.start_date,
+			"end_date": d.end_date if d.end_date else nowdate(),
 			"title": cstr(d.employee_name) + \
 				cstr(d.shift_type),
 			"docstatus": d.docstatus
@@ -92,7 +120,16 @@
 	:param next_shift_direction: One of: None, 'forward', 'reverse'. Direction to look for next shift if shift not found on given date.
 	"""
 	default_shift = frappe.db.get_value('Employee', employee, 'default_shift')
-	shift_type_name = frappe.db.get_value('Shift Assignment', {'employee':employee, 'date': for_date, 'docstatus': '1'}, 'shift_type')
+	shift_type_name = None
+	shift_assignment_details = frappe.db.get_value('Shift Assignment', {'employee':employee, 'start_date':('<=', for_date), 'docstatus': '1', 'status': "Active"}, ['shift_type', 'end_date'])
+
+	if shift_assignment_details:
+		shift_type_name = shift_assignment_details[0]
+
+		# if end_date present means that shift is over after end_date else it is a ongoing shift.
+		if shift_assignment_details[1] and for_date >= shift_assignment_details[1] :
+			shift_type_name = None
+
 	if not shift_type_name and consider_default_shift:
 		shift_type_name = default_shift
 	if shift_type_name:
@@ -117,16 +154,20 @@
 			direction = '<' if next_shift_direction == 'reverse' else '>'
 			sort_order = 'desc' if next_shift_direction == 'reverse' else 'asc'
 			dates = frappe.db.get_all('Shift Assignment',
-				'date',
-				{'employee':employee, 'date':(direction, for_date), 'docstatus': '1'},
+				['start_date', 'end_date'],
+				{'employee':employee, 'start_date':(direction, for_date), 'docstatus': '1', "status": "Active"},
 				as_list=True,
-				limit=MAX_DAYS, order_by="date "+sort_order)
-			for date in dates:
-				shift_details = get_employee_shift(employee, date[0], consider_default_shift, None)
-				if shift_details:
-					shift_type_name = shift_details.shift_type.name
-					for_date = date[0]
-					break
+				limit=MAX_DAYS, order_by="start_date "+sort_order)
+
+			if dates:
+				for date in dates:
+					if date[1] and date[1] < for_date:
+						continue
+					shift_details = get_employee_shift(employee, date[0], consider_default_shift, None)
+					if shift_details:
+						shift_type_name = shift_details.shift_type.name
+						for_date = date[0]
+						break
 
 	return get_shift_details(shift_type_name, for_date)
 
@@ -134,7 +175,7 @@
 def get_employee_shift_timings(employee, for_timestamp=now_datetime(), consider_default_shift=False):
 	"""Returns previous shift, current/upcoming shift, next_shift for the given timestamp and employee
 	"""
-	# write and verify a test case for midnight shift. 
+	# write and verify a test case for midnight shift.
 	prev_shift = curr_shift = next_shift = None
 	curr_shift = get_employee_shift(employee, for_timestamp.date(), consider_default_shift, 'forward')
 	if curr_shift:
diff --git a/erpnext/hr/doctype/shift_assignment/shift_assignment_calendar.js b/erpnext/hr/doctype/shift_assignment/shift_assignment_calendar.js
index c2c9bc0..17a986d 100644
--- a/erpnext/hr/doctype/shift_assignment/shift_assignment_calendar.js
+++ b/erpnext/hr/doctype/shift_assignment/shift_assignment_calendar.js
@@ -3,8 +3,8 @@
 
 frappe.views.calendar["Shift Assignment"] = {
 	field_map: {
-		"start": "date",
-		"end": "date",
+		"start": "start_date",
+		"end": "end_date",
 		"id": "name",
 		"docstatus": 1
 	},
diff --git a/erpnext/hr/doctype/shift_assignment/test_shift_assignment.py b/erpnext/hr/doctype/shift_assignment/test_shift_assignment.py
index 7fe80a2..4c3c1ed 100644
--- a/erpnext/hr/doctype/shift_assignment/test_shift_assignment.py
+++ b/erpnext/hr/doctype/shift_assignment/test_shift_assignment.py
@@ -5,7 +5,7 @@
 
 import frappe
 import unittest
-from frappe.utils import nowdate
+from frappe.utils import nowdate, add_days
 
 test_dependencies = ["Shift Type"]
 
@@ -20,8 +20,61 @@
 			"shift_type": "Day Shift",
 			"company": "_Test Company",
 			"employee": "_T-Employee-00001",
-			"date": nowdate()
+			"start_date": nowdate()
 		}).insert()
 		shift_assignment.submit()
 
 		self.assertEqual(shift_assignment.docstatus, 1)
+
+	def test_overlapping_for_ongoing_shift(self):
+		# shift should be Ongoing if Only start_date is present and status = Active
+
+		shift_assignment_1 = frappe.get_doc({
+			"doctype": "Shift Assignment",
+			"shift_type": "Day Shift",
+			"company": "_Test Company",
+			"employee": "_T-Employee-00001",
+			"start_date": nowdate(),
+			"status": 'Active'
+		}).insert()
+		shift_assignment_1.submit()
+
+		self.assertEqual(shift_assignment_1.docstatus, 1)
+
+		shift_assignment = frappe.get_doc({
+			"doctype": "Shift Assignment",
+			"shift_type": "Day Shift",
+			"company": "_Test Company",
+			"employee": "_T-Employee-00001",
+			"start_date": add_days(nowdate(), 2)
+		})
+
+		self.assertRaises(frappe.ValidationError, shift_assignment.save)
+
+	def test_overlapping_for_fixed_period_shift(self):
+		# shift should is for Fixed period if Only start_date and end_date both are present and status = Active
+
+			shift_assignment_1 = frappe.get_doc({
+				"doctype": "Shift Assignment",
+				"shift_type": "Day Shift",
+				"company": "_Test Company",
+				"employee": "_T-Employee-00001",
+				"start_date": nowdate(),
+				"end_date": add_days(nowdate(), 30),
+				"status": 'Active'
+			}).insert()
+			shift_assignment_1.submit()
+
+
+			# it should not allowed within period of any shift.
+			shift_assignment_3 = frappe.get_doc({
+				"doctype": "Shift Assignment",
+				"shift_type": "Day Shift",
+				"company": "_Test Company",
+				"employee": "_T-Employee-00001",
+				"start_date":add_days(nowdate(), 10),
+				"end_date": add_days(nowdate(), 35),
+				"status": 'Active'
+			})
+
+			self.assertRaises(frappe.ValidationError, shift_assignment_3.save)
\ No newline at end of file
diff --git a/erpnext/hr/doctype/shift_request/shift_request.js b/erpnext/hr/doctype/shift_request/shift_request.js
index 1db7c7d..b17a6f3 100644
--- a/erpnext/hr/doctype/shift_request/shift_request.js
+++ b/erpnext/hr/doctype/shift_request/shift_request.js
@@ -2,7 +2,16 @@
 // For license information, please see license.txt
 
 frappe.ui.form.on('Shift Request', {
-	refresh: function(frm) {
-
-	}
+	setup: function(frm) {
+		frm.set_query("approver", function() {
+			return {
+				query: "erpnext.hr.doctype.department_approver.department_approver.get_approvers",
+				filters: {
+					employee: frm.doc.employee,
+					doctype: frm.doc.doctype
+				}
+			};
+		});
+		frm.set_query("employee", erpnext.queries.employee);
+	},
 });
diff --git a/erpnext/hr/doctype/shift_request/shift_request.json b/erpnext/hr/doctype/shift_request/shift_request.json
index dd05647..64cbdff 100644
--- a/erpnext/hr/doctype/shift_request/shift_request.json
+++ b/erpnext/hr/doctype/shift_request/shift_request.json
@@ -1,396 +1,155 @@
 {
- "allow_copy": 0, 
- "allow_guest_to_view": 0, 
- "allow_import": 1, 
- "allow_rename": 0, 
- "autoname": "HR-SHR-.YY.-.MM.-.#####", 
- "beta": 0, 
- "creation": "2018-04-13 16:32:27.974273", 
- "custom": 0, 
- "docstatus": 0, 
- "doctype": "DocType", 
- "document_type": "", 
- "editable_grid": 1, 
- "engine": "InnoDB", 
+ "actions": [],
+ "allow_import": 1,
+ "autoname": "HR-SHR-.YY.-.MM.-.#####",
+ "creation": "2018-04-13 16:32:27.974273",
+ "doctype": "DocType",
+ "editable_grid": 1,
+ "engine": "InnoDB",
+ "field_order": [
+  "shift_type",
+  "employee",
+  "employee_name",
+  "department",
+  "status",
+  "column_break_4",
+  "company",
+  "approver",
+  "from_date",
+  "to_date",
+  "amended_from"
+ ],
  "fields": [
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "shift_type", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 1, 
-   "in_standard_filter": 0, 
-   "label": "Shift Type", 
-   "length": 0, 
-   "no_copy": 0, 
-   "options": "Shift Type", 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 1, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "shift_type",
+   "fieldtype": "Link",
+   "in_list_view": 1,
+   "label": "Shift Type",
+   "options": "Shift Type",
+   "reqd": 1
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "employee", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 1, 
-   "in_standard_filter": 0, 
-   "label": "Employee", 
-   "length": 0, 
-   "no_copy": 0, 
-   "options": "Employee", 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 1, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "employee",
+   "fieldtype": "Link",
+   "in_list_view": 1,
+   "label": "Employee",
+   "options": "Employee",
+   "reqd": 1
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fetch_from": "employee.employee_name", 
-   "fieldname": "employee_name", 
-   "fieldtype": "Data", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "Employee Name", 
-   "length": 0, 
-   "no_copy": 0, 
-   "options": "", 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 1, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
+   "fetch_from": "employee.employee_name",
+   "fieldname": "employee_name",
+   "fieldtype": "Data",
+   "label": "Employee Name",
+   "read_only": 1
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fetch_from": "employee.department", 
-   "fieldname": "department", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "Department", 
-   "length": 0, 
-   "no_copy": 0, 
-   "options": "Department", 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 1, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
+   "fetch_from": "employee.department",
+   "fieldname": "department",
+   "fieldtype": "Link",
+   "label": "Department",
+   "options": "Department",
+   "read_only": 1
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "column_break_4", 
-   "fieldtype": "Column Break", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "length": 0, 
-   "no_copy": 0, 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "column_break_4",
+   "fieldtype": "Column Break"
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "company", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 1, 
-   "in_standard_filter": 0, 
-   "label": "Company", 
-   "length": 0, 
-   "no_copy": 0, 
-   "options": "Company", 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 1, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "company",
+   "fieldtype": "Link",
+   "in_list_view": 1,
+   "label": "Company",
+   "options": "Company",
+   "reqd": 1
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "from_date", 
-   "fieldtype": "Date", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "From Date", 
-   "length": 0, 
-   "no_copy": 0, 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "from_date",
+   "fieldtype": "Date",
+   "label": "From Date",
+   "reqd": 1
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "to_date", 
-   "fieldtype": "Date", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "To Date", 
-   "length": 0, 
-   "no_copy": 0, 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "to_date",
+   "fieldtype": "Date",
+   "label": "To Date"
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "amended_from", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "Amended From", 
-   "length": 0, 
-   "no_copy": 1, 
-   "options": "Shift Request", 
-   "permlevel": 0, 
-   "print_hide": 1, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 1, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
-   "unique": 0
+   "fieldname": "amended_from",
+   "fieldtype": "Link",
+   "label": "Amended From",
+   "no_copy": 1,
+   "options": "Shift Request",
+   "print_hide": 1,
+   "read_only": 1
+  },
+  {
+   "default": "Draft",
+   "fieldname": "status",
+   "fieldtype": "Select",
+   "label": "Status",
+   "options": "Draft\nApproved\nRejected",
+   "reqd": 1
+  },
+  {
+   "fetch_from": "employee.shift_request_approver",
+   "fetch_if_empty": 1,
+   "fieldname": "approver",
+   "fieldtype": "Link",
+   "label": "Approver",
+   "options": "User",
+   "reqd": 1
   }
- ], 
- "has_web_view": 0, 
- "hide_heading": 0, 
- "hide_toolbar": 0, 
- "idx": 0, 
- "image_view": 0, 
- "in_create": 0, 
- "is_submittable": 1, 
- "issingle": 0, 
- "istable": 0, 
- "max_attachments": 0, 
- "modified": "2018-08-21 16:15:36.577448", 
- "modified_by": "Administrator", 
- "module": "HR", 
- "name": "Shift Request", 
- "name_case": "", 
- "owner": "Administrator", 
+ ],
+ "is_submittable": 1,
+ "links": [],
+ "modified": "2020-08-10 17:59:31.550558",
+ "modified_by": "Administrator",
+ "module": "HR",
+ "name": "Shift Request",
+ "owner": "Administrator",
  "permissions": [
   {
-   "amend": 0, 
-   "cancel": 0, 
-   "create": 1, 
-   "delete": 0, 
-   "email": 1, 
-   "export": 1, 
-   "if_owner": 0, 
-   "import": 0, 
-   "permlevel": 0, 
-   "print": 1, 
-   "read": 1, 
-   "report": 1, 
-   "role": "Employee", 
-   "set_user_permissions": 0, 
-   "share": 1, 
-   "submit": 1, 
+   "create": 1,
+   "email": 1,
+   "export": 1,
+   "print": 1,
+   "read": 1,
+   "report": 1,
+   "role": "Employee",
+   "share": 1,
    "write": 1
-  }, 
+  },
   {
-   "amend": 1, 
-   "cancel": 1, 
-   "create": 1, 
-   "delete": 1, 
-   "email": 1, 
-   "export": 1, 
-   "if_owner": 0, 
-   "import": 0, 
-   "permlevel": 0, 
-   "print": 1, 
-   "read": 1, 
-   "report": 1, 
-   "role": "HR Manager", 
-   "set_user_permissions": 0, 
-   "share": 1, 
-   "submit": 1, 
+   "amend": 1,
+   "cancel": 1,
+   "create": 1,
+   "delete": 1,
+   "email": 1,
+   "export": 1,
+   "print": 1,
+   "read": 1,
+   "report": 1,
+   "role": "HR Manager",
+   "share": 1,
+   "submit": 1,
    "write": 1
-  }, 
+  },
   {
-   "amend": 0, 
-   "cancel": 0, 
-   "create": 1, 
-   "delete": 0, 
-   "email": 1, 
-   "export": 1, 
-   "if_owner": 0, 
-   "import": 0, 
-   "permlevel": 0, 
-   "print": 1, 
-   "read": 1, 
-   "report": 1, 
-   "role": "HR User", 
-   "set_user_permissions": 0, 
-   "share": 1, 
-   "submit": 1, 
+   "create": 1,
+   "email": 1,
+   "export": 1,
+   "print": 1,
+   "read": 1,
+   "report": 1,
+   "role": "HR User",
+   "share": 1,
+   "submit": 1,
    "write": 1
   }
- ], 
- "quick_entry": 0, 
- "read_only": 0, 
- "read_only_onload": 0, 
- "show_name_in_global_search": 0, 
- "sort_field": "modified", 
- "sort_order": "DESC", 
- "title_field": "employee_name", 
- "track_changes": 1, 
- "track_seen": 0, 
- "track_views": 0
+ ],
+ "sort_field": "modified",
+ "sort_order": "DESC",
+ "title_field": "employee_name",
+ "track_changes": 1
 }
\ No newline at end of file
diff --git a/erpnext/hr/doctype/shift_request/shift_request.py b/erpnext/hr/doctype/shift_request/shift_request.py
index ff5de08..1c2801b 100644
--- a/erpnext/hr/doctype/shift_request/shift_request.py
+++ b/erpnext/hr/doctype/shift_request/shift_request.py
@@ -14,19 +14,26 @@
 	def validate(self):
 		self.validate_dates()
 		self.validate_shift_request_overlap_dates()
+		self.validate_approver()
+		self.validate_default_shift()
 
 	def on_submit(self):
-		date_list = self.get_working_days(self.from_date, self.to_date)
-		for date in date_list:
+		if self.status not in ["Approved", "Rejected"]:
+			frappe.throw(_("Only Shift Request with status 'Approved' and 'Rejected' can be submitted"))
+		if self.status == "Approved":
 			assignment_doc = frappe.new_doc("Shift Assignment")
 			assignment_doc.company = self.company
 			assignment_doc.shift_type = self.shift_type
 			assignment_doc.employee = self.employee
-			assignment_doc.date = date
+			assignment_doc.start_date = self.from_date
+			if self.to_date:
+				assignment_doc.end_date = self.to_date
 			assignment_doc.shift_request = self.name
 			assignment_doc.insert()
 			assignment_doc.submit()
 
+			frappe.msgprint(_("Shift Assignment: {0} created for Employee: {1}").format(frappe.bold(assignment_doc.name), frappe.bold(self.employee)))
+
 	def on_cancel(self):
 		shift_assignment_list = frappe.get_list("Shift Assignment", {'employee': self.employee, 'shift_request': self.name})
 		if shift_assignment_list:
@@ -34,6 +41,19 @@
 				shift_assignment_doc = frappe.get_doc("Shift Assignment", shift['name'])
 				shift_assignment_doc.cancel()
 
+	def validate_default_shift(self):
+		default_shift = frappe.get_value("Employee", self.employee, "default_shift")
+		if self.shift_type == default_shift:
+			frappe.throw(_("You can not request for your Default Shift: {0}").format(frappe.bold(self.shift_type)))
+
+	def validate_approver(self):
+		department = frappe.get_value("Employee", self.employee, "department")
+		shift_approver = frappe.get_value("Employee", self.employee, "shift_request_approver")
+		approvers = frappe.db.sql("""select approver from `tabDepartment Approver` where parent= %s and parentfield = 'shift_request_approver'""", (department))
+		approvers = [approver[0] for approver in approvers]
+		approvers.append(shift_approver)
+		if self.approver not in approvers:
+			frappe.throw(_("Only Approvers can Approve this Request."))
 
 	def validate_dates(self):
 		if self.from_date and self.to_date and (getdate(self.to_date) < getdate(self.from_date)):
@@ -68,28 +88,4 @@
 		msg = _("Employee {0} has already applied for {1} between {2} and {3} : ").format(self.employee,
 			d['shift_type'], formatdate(d['from_date']), formatdate(d['to_date'])) \
 			+ """ <b><a href="#Form/Shift Request/{0}">{0}</a></b>""".format(d["name"])
-		frappe.throw(msg, OverlapError)
-
-	def get_working_days(self, start_date, end_date):
-		start_date, end_date = getdate(start_date), getdate(end_date)
-
-		from datetime import timedelta
-
-		date_list = []
-		employee_holiday_list = []
-
-		employee_holidays = frappe.db.sql("""select holiday_date from `tabHoliday`
-								where parent in (select holiday_list from `tabEmployee`
-								where name = %s)""",self.employee,as_dict=1)
-
-		for d in employee_holidays:
-			employee_holiday_list.append(d.holiday_date)
-
-		reference_date = start_date
-		
-		while reference_date <= end_date:
-			if reference_date not in employee_holiday_list:
-				date_list.append(reference_date)
-			reference_date += timedelta(days=1)
-
-		return date_list
\ No newline at end of file
+		frappe.throw(msg, OverlapError)
\ No newline at end of file
diff --git a/erpnext/hr/doctype/shift_request/test_shift_request.py b/erpnext/hr/doctype/shift_request/test_shift_request.py
index 1d0cf71..3dcfcbf 100644
--- a/erpnext/hr/doctype/shift_request/test_shift_request.py
+++ b/erpnext/hr/doctype/shift_request/test_shift_request.py
@@ -5,7 +5,7 @@
 
 import frappe
 import unittest
-from frappe.utils import nowdate
+from frappe.utils import nowdate, add_days
 
 class TestShiftRequest(unittest.TestCase):
 	def setUp(self):
@@ -13,14 +13,20 @@
 			frappe.db.sql("delete from `tab{doctype}`".format(doctype=doctype))
 
 	def test_make_shift_request(self):
+		department = frappe.get_value("Employee", "_T-Employee-00001", 'department')
+		set_shift_approver(department)
+		approver = frappe.db.sql("""select approver from `tabDepartment Approver` where parent= %s and parentfield = 'shift_request_approver'""", (department))[0][0]
+
 		shift_request = frappe.get_doc({
 			"doctype": "Shift Request",
 			"shift_type": "Day Shift",
 			"company": "_Test Company",
 			"employee": "_T-Employee-00001",
 			"employee_name": "_Test Employee",
-			"start_date": nowdate(),
-			"end_date": nowdate()
+			"from_date": nowdate(),
+			"to_date": add_days(nowdate(), 10),
+			"approver": approver,
+			"status": "Approved"
 		})
 		shift_request.insert()
 		shift_request.submit()
@@ -34,4 +40,10 @@
 			self.assertEqual(shift_request.employee, employee)
 			shift_request.cancel()
 			shift_assignment_doc = frappe.get_doc("Shift Assignment", {"shift_request": d.get('shift_request')})
-			self.assertEqual(shift_assignment_doc.docstatus, 2)
\ No newline at end of file
+			self.assertEqual(shift_assignment_doc.docstatus, 2)
+
+def set_shift_approver(department):
+	department_doc = frappe.get_doc("Department", department)
+	department_doc.append('shift_request_approver',{'approver': "test1@example.com"})
+	department_doc.save()
+	department_doc.reload()
\ No newline at end of file
diff --git a/erpnext/hr/doctype/shift_type/shift_type.js b/erpnext/hr/doctype/shift_type/shift_type.js
index e633545..ba53312 100644
--- a/erpnext/hr/doctype/shift_type/shift_type.js
+++ b/erpnext/hr/doctype/shift_type/shift_type.js
@@ -4,7 +4,7 @@
 frappe.ui.form.on('Shift Type', {
 	refresh: function(frm) {
 		frm.add_custom_button(
-			'Mark Auto Attendance',
+			'Mark Attendance',
 			() => frm.call({
 				doc: frm.doc,
 				method: 'process_auto_attendance',
diff --git a/erpnext/hr/doctype/shift_type/shift_type.py b/erpnext/hr/doctype/shift_type/shift_type.py
index 1973564..054e7e3 100644
--- a/erpnext/hr/doctype/shift_type/shift_type.py
+++ b/erpnext/hr/doctype/shift_type/shift_type.py
@@ -79,9 +79,10 @@
 				mark_attendance(employee, date, 'Absent', self.name)
 
 	def get_assigned_employee(self, from_date=None, consider_default_shift=False):
-		filters = {'date':('>=', from_date), 'shift_type': self.name, 'docstatus': '1'}
+		filters = {'start_date':('>', from_date), 'shift_type': self.name, 'docstatus': '1'}
 		if not from_date:
-			del filters['date']
+			del filters["start_date"]
+
 		assigned_employees = frappe.get_all('Shift Assignment', 'employee', filters, as_list=True)
 		assigned_employees = [x[0] for x in assigned_employees]
 
diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index 17b46ab..502bc97 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -722,3 +722,4 @@
 erpnext.patches.v12_0.update_state_code_for_daman_and_diu
 erpnext.patches.v12_0.rename_lost_reason_detail
 erpnext.patches.v13_0.drop_razorpay_payload_column
+erpnext.patches.v13_0.update_start_end_date_for_old_shift_assignment
diff --git a/erpnext/patches/v13_0/update_start_end_date_for_old_shift_assignment.py b/erpnext/patches/v13_0/update_start_end_date_for_old_shift_assignment.py
new file mode 100644
index 0000000..7c07b98
--- /dev/null
+++ b/erpnext/patches/v13_0/update_start_end_date_for_old_shift_assignment.py
@@ -0,0 +1,10 @@
+# Copyright (c) 2019, Frappe and Contributors
+# License: GNU General Public License v3. See license.txt
+
+from __future__ import unicode_literals
+
+import frappe
+
+def execute():
+    frappe.reload_doc('hr', 'doctype', 'shift_assignment')
+    frappe.db.sql("update `tabShift Assignment` set end_date=date, start_date=date where date IS NOT NULL and start_date IS NULL and end_date IS NULL;")
diff --git a/erpnext/regional/india/utils.py b/erpnext/regional/india/utils.py
index fe7e0c8..844e34b 100644
--- a/erpnext/regional/india/utils.py
+++ b/erpnext/regional/india/utils.py
@@ -1,6 +1,7 @@
 from __future__ import unicode_literals
 import frappe, re, json
 from frappe import _
+import erpnext
 from frappe.utils import cstr, flt, date_diff, nowdate, round_based_on_smallest_currency_fraction, money_in_words
 from erpnext.regional.india import states, state_numbers
 from erpnext.controllers.taxes_and_totals import get_itemised_tax, get_itemised_taxable_amount
@@ -673,25 +674,34 @@
 	if country != 'India':
 		return
 
+	if not doc.total_taxes_and_charges:
+		return
+
 	if doc.reverse_charge == 'Y':
 		gst_accounts = get_gst_accounts(doc.company)
 		gst_account_list = gst_accounts.get('cgst_account') + gst_accounts.get('sgst_account') \
 			+ gst_accounts.get('igst_account')
 
+		base_gst_tax = 0
 		gst_tax = 0
+
 		for tax in doc.get('taxes'):
 			if tax.category not in ("Total", "Valuation and Total"):
 				continue
 
 			if flt(tax.base_tax_amount_after_discount_amount) and tax.account_head in gst_account_list:
-				gst_tax += tax.base_tax_amount_after_discount_amount
+				base_gst_tax += tax.base_tax_amount_after_discount_amount
+				gst_tax += tax.tax_amount_after_discount_amount
 
 		doc.taxes_and_charges_added -= gst_tax
 		doc.total_taxes_and_charges -= gst_tax
+		doc.base_taxes_and_charges_added -= base_gst_tax
+		doc.base_total_taxes_and_charges -= base_gst_tax
 
-		update_totals(gst_tax, doc)
+		update_totals(gst_tax, base_gst_tax, doc)
 
-def update_totals(gst_tax, doc):
+def update_totals(gst_tax, base_gst_tax, doc):
+	doc.base_grand_total -= base_gst_tax
 	doc.grand_total -= gst_tax
 
 	if doc.meta.get_field("rounded_total"):
@@ -707,13 +717,17 @@
 			doc.outstanding_amount = doc.rounded_total or doc.grand_total
 
 	doc.in_words = money_in_words(doc.grand_total, doc.currency)
+	doc.base_in_words = money_in_words(doc.base_grand_total, erpnext.get_company_currency(doc.company))
 	doc.set_payment_schedule()
 
 def make_regional_gl_entries(gl_entries, doc):
 	country = frappe.get_cached_value('Company', doc.company, 'country')
 
 	if country != 'India':
-		return
+		return gl_entries
+
+	if not doc.total_taxes_and_charges:
+		return gl_entries
 
 	if doc.reverse_charge == 'Y':
 		gst_accounts = get_gst_accounts(doc.company)
diff --git a/erpnext/regional/report/hsn_wise_summary_of_outward_supplies/hsn_wise_summary_of_outward_supplies.py b/erpnext/regional/report/hsn_wise_summary_of_outward_supplies/hsn_wise_summary_of_outward_supplies.py
index 222dfa1..a3ed4ce 100644
--- a/erpnext/regional/report/hsn_wise_summary_of_outward_supplies/hsn_wise_summary_of_outward_supplies.py
+++ b/erpnext/regional/report/hsn_wise_summary_of_outward_supplies/hsn_wise_summary_of_outward_supplies.py
@@ -7,6 +7,8 @@
 from frappe.utils import flt
 from frappe.model.meta import get_field_precision
 from frappe.utils.xlsxutils import handle_html
+from six import iteritems
+import json
 
 def execute(filters=None):
 	return _execute(filters)
@@ -21,21 +23,24 @@
 		itemised_tax, tax_columns = get_tax_accounts(item_list, columns, company_currency)
 
 	data = []
+	added_item = []
 	for d in item_list:
-		row = [d.gst_hsn_code, d.description, d.stock_uom, d.stock_qty]
-		total_tax = 0
-		for tax in tax_columns:
-			item_tax = itemised_tax.get(d.name, {}).get(tax, {})
-			total_tax += flt(item_tax.get("tax_amount"))
+		if (d.parent, d.item_code) not in added_item:
+			row = [d.gst_hsn_code, d.description, d.stock_uom, d.stock_qty]
+			total_tax = 0
+			for tax in tax_columns:
+				item_tax = itemised_tax.get((d.parent, d.item_code), {}).get(tax, {})
+				total_tax += flt(item_tax.get("tax_amount", 0))
 
-		row += [d.base_net_amount + total_tax]
-		row += [d.base_net_amount]
+			row += [d.base_net_amount + total_tax]
+			row += [d.base_net_amount]
 
-		for tax in tax_columns:
-			item_tax = itemised_tax.get(d.name, {}).get(tax, {})
-			row += [item_tax.get("tax_amount", 0)]
+			for tax in tax_columns:
+				item_tax = itemised_tax.get((d.parent, d.item_code), {}).get(tax, {})
+				row += [item_tax.get("tax_amount", 0)]
 
-		data.append(row)
+			data.append(row)
+			added_item.append((d.parent, d.item_code))
 	if data:
 		data = get_merged_data(columns, data) # merge same hsn code data
 	return columns, data
@@ -103,7 +108,7 @@
 		match_conditions = " and {0} ".format(match_conditions)
 
 
-	return frappe.db.sql("""
+	items = frappe.db.sql("""
 		select
 			`tabSales Invoice Item`.name, `tabSales Invoice Item`.base_price_list_rate,
 			`tabSales Invoice Item`.gst_hsn_code, `tabSales Invoice Item`.stock_qty,
@@ -118,10 +123,9 @@
 
 		""" % (conditions, match_conditions), filters, as_dict=1)
 
+	return items
 
-def get_tax_accounts(item_list, columns, company_currency,
-		doctype="Sales Invoice", tax_doctype="Sales Taxes and Charges"):
-	import json
+def get_tax_accounts(item_list, columns, company_currency, doctype="Sales Invoice", tax_doctype="Sales Taxes and Charges"):
 	item_row_map = {}
 	tax_columns = []
 	invoice_item_row = {}
@@ -171,7 +175,7 @@
 					for d in item_row_map.get(parent, {}).get(item_code, []):
 						item_tax_amount = tax_amount
 						if item_tax_amount:
-							itemised_tax.setdefault(d.name, {})[description] = frappe._dict({
+							itemised_tax.setdefault((parent, item_code), {})[description] = frappe._dict({
 								"tax_amount": flt(item_tax_amount, tax_amount_precision)
 							})
 			except ValueError:
@@ -179,42 +183,32 @@
 
 	tax_columns.sort()
 	for desc in tax_columns:
-		columns.append(desc + " Amount:Currency/currency:160")
+		columns.append({
+			"label": desc,
+			"fieldname": frappe.scrub(desc),
+			"fieldtype": "Float",
+			"width": 110
+		})
 
-	# columns += ["Total Amount:Currency/currency:110"]
 	return itemised_tax, tax_columns
 
 def get_merged_data(columns, data):
 	merged_hsn_dict = {} # to group same hsn under one key and perform row addition
-	add_column_index = [] # store index of columns that needs to be added
-	tax_col = len(get_columns())
-	fields_to_merge = ["stock_qty", "total_amount", "taxable_amount"] # columns for which index needs to be found
-
-	for i,d in enumerate(columns):
-		# check if fieldname in to_merge list and ignore tax-columns
-		if i < tax_col and d["fieldname"] in fields_to_merge:
-			add_column_index.append(i)
+	result = []
 
 	for row in data:
-		if row[0] in merged_hsn_dict:
-			to_add_row = merged_hsn_dict.get(row[0])
+		merged_hsn_dict.setdefault(row[0], {})
+		for i, d in enumerate(columns):
+			if d['fieldtype'] not in ('Int', 'Float', 'Currency'):
+				merged_hsn_dict[row[0]][d['fieldname']] = row[i]
+			else:
+				if merged_hsn_dict.get(row[0], {}).get(d['fieldname'], ''):
+					merged_hsn_dict[row[0]][d['fieldname']] += row[i]
+				else:
+					merged_hsn_dict[row[0]][d['fieldname']] = row[i]
 
-			# add columns from the add_column_index table
-			for k in add_column_index:
-				to_add_row[k] += row[k]
+	for key, value in iteritems(merged_hsn_dict):
+		result.append(value)
 
-			# add tax columns
-			for k in range(len(columns)):
-				if tax_col <= k < len(columns):
-					to_add_row[k] += row[k]
-
-			# update hsn dict with the newly added data
-			merged_hsn_dict[row[0]] = to_add_row
-		else:
-			merged_hsn_dict[row[0]] = row
-
-	# extract data rows to be displayed in report
-	data = [merged_hsn_dict[d] for d in merged_hsn_dict]
-
-	return data
+	return result
 
diff --git a/erpnext/selling/page/point_of_sale/pos_past_order_summary.js b/erpnext/selling/page/point_of_sale/pos_past_order_summary.js
index 24326b2..30e0918 100644
--- a/erpnext/selling/page/point_of_sale/pos_past_order_summary.js
+++ b/erpnext/selling/page/point_of_sale/pos_past_order_summary.js
@@ -86,7 +86,7 @@
         this.$summary_container.append(
             `<div class="summary-btns flex summary-btns justify-between w-full f-shrink-0"></div>`
         )
-        
+
         this.$summary_btns = this.$summary_container.find('.summary-btns');
     }
 
@@ -110,7 +110,10 @@
                 {fieldname:'print', fieldtype:'Data', label:'Print Preview'}
             ],
             primary_action: () => {
-                this.events.get_frm().print_preview.printit(true);
+                const frm = this.events.get_frm();
+                frm.doc = this.doc;
+                frm.print_preview.lang_code = frm.doc.language;
+                frm.print_preview.printit(true);
             },
             primary_action_label: __('Print'),
         });
@@ -174,7 +177,7 @@
                     <div class="flex">
                         <div class="text-md-0 text-dark-grey text-bold w-fit">Tax Charges</div>
                         <div class="flex ml-6 text-dark-grey">
-                        ${	
+                        ${
                             doc.taxes.map((t, i) => {
                                 let margin_left = '';
                                 if (i !== 0) margin_left = 'ml-2';
@@ -271,6 +274,7 @@
             // this.print_dialog.show();
             const frm = this.events.get_frm();
             frm.doc = this.doc;
+            frm.print_preview.lang_code = frm.doc.language;
             frm.print_preview.printit(true);
         });
     }
@@ -284,9 +288,9 @@
             this.$summary_container.find('.print-btn').click();
         });
     }
-    
+
     toggle_component(show) {
-        show ? 
+        show ?
         this.$component.removeClass('d-none') :
         this.$component.addClass('d-none');
     }
@@ -372,9 +376,9 @@
     }
 
     get_condition_btn_map(after_submission) {
-        if (after_submission) 
+        if (after_submission)
             return [{ condition: true, visible_btns: ['Print Receipt', 'Email Receipt', 'New Order'] }];
-        
+
         return [
             { condition: this.doc.docstatus === 0, visible_btns: ['Edit Order'] },
             { condition: !this.doc.is_return && this.doc.docstatus === 1, visible_btns: ['Print Receipt', 'Email Receipt', 'Return']},
@@ -384,7 +388,7 @@
 
     load_summary_of(doc, after_submission=false) {
         this.$summary_wrapper.removeClass("d-none");
-        
+
         after_submission ?
             this.switch_to_post_submit_summary() : this.switch_to_recent_invoice_summary();