refactor: Deduplication (#6347)

* refactor: Deduplicate setup_perms_for

`setup_perms_for` has two identical definitions in

frappe/utils/reset_doc.py and
frappe/patches/v7_2/setup_custom_perms.py

Remove definition from setup_custom_perms.py, use import instead

* refactor: Deduplicate get_parent_doc and set_timeline_doc

`get_parent_doc` and `set_timeline_doc` are accidentally defined twice in

frappe/core/utils.py and
frappe/core/doctype/communication/communication.py

Remove definition from communication.py, use import instead

* fix(python3): Replace urlopen import with six.moves.urllib.request.urlopen

frappe/core/doctype/communication/communication.py

@@ -10,6 +10,7 @@ from frappe.core.doctype.communication.comment import (notify_mentions,
 	update_comment_in_doc, on_trash)
 from frappe.core.doctype.communication.email import (validate_email,
 	notify, _notify, update_parent_mins_to_first_response)
+from frappe.core.utils import get_parent_doc, set_timeline_doc
 from frappe.utils.bot import BotReply
 from frappe.utils import parse_addr
 
@@ -241,34 +242,6 @@ class Communication(Document):
 			if commit:
 				frappe.db.commit()
 
-def get_parent_doc(doc):
-	"""Returns document of `reference_doctype`, `reference_doctype`"""
-	if not hasattr(doc, "parent_doc"):
-		if doc.reference_doctype and doc.reference_name:
-			doc.parent_doc = frappe.get_doc(doc.reference_doctype, doc.reference_name)
-		else:
-			doc.parent_doc = None
-	return doc.parent_doc
-
-def set_timeline_doc(doc):
-	"""Set timeline_doctype and timeline_name"""
-	parent_doc = get_parent_doc(doc)
-	if (doc.timeline_doctype and doc.timeline_name) or not parent_doc:
-		return
-
-	timeline_field = parent_doc.meta.timeline_field
-	if not timeline_field:
-		return
-
-	doctype = parent_doc.meta.get_link_doctype(timeline_field)
-	name = parent_doc.get(timeline_field)
-
-	if doctype and name:
-		doc.timeline_doctype = doctype
-		doc.timeline_name = name
-
-	else:
-		return
 
 def on_doctype_update():
 	"""Add indexes in `tabCommunication`"""

frappe/patches/v7_2/setup_custom_perms.py

@@ -1,6 +1,7 @@
 import frappe
 from frappe.permissions import setup_custom_perms
 from frappe.core.page.permission_manager.permission_manager import get_standard_permissions
+from frappe.utils.reset_doc import setup_perms_for
 
 '''
 Copy DocPerm to Custom DocPerm where permissions are set differently
@@ -9,30 +10,3 @@ Copy DocPerm to Custom DocPerm where permissions are set differently
 def execute():
 	for d in frappe.db.get_all('DocType', dict(istable=0, issingle=0, custom=0)):
 		setup_perms_for(d.name)
-
-def setup_perms_for(doctype):
-	perms = frappe.get_all('DocPerm', fields='*', filters=dict(parent=doctype), order_by='idx asc')
-	# get default perms
-	try:
-		standard_perms = get_standard_permissions(doctype)
-	except (IOError, KeyError):
-		# no json file, doctype no longer exists!
-		return
-
-	same = True
-	if len(standard_perms) != len(perms):
-		same = False
-
-	else:
-		for i, p in enumerate(perms):
-			standard = standard_perms[i]
-			for fieldname in frappe.get_meta('DocPerm').get_fieldnames_with_value():
-				if p.get(fieldname) != standard.get(fieldname):
-					same = False
-					break
-
-			if not same:
-				break
-
-	if not same:
-		setup_custom_perms(doctype)

frappe/utils/reset_doc.py

@@ -1,5 +1,5 @@
 import frappe
-import json, urllib2, os
+import json, os
 from frappe.modules import scrub, get_module_path, load_doctype_module, utils
 from frappe.custom.doctype.customize_form.customize_form import doctype_properties, docfield_properties
 from frappe.custom.doctype.property_setter.property_setter import make_property_setter
@@ -7,6 +7,7 @@ from frappe.custom.doctype.custom_field.custom_field import create_custom_field
 from frappe.modules.import_file import get_file_path, read_doc_from_file
 from frappe.core.page.permission_manager.permission_manager import get_standard_permissions
 from frappe.permissions import setup_custom_perms
+from six.moves.urllib.request import urlopen
 
 branch = 'develop'
 
@@ -28,7 +29,7 @@ def reset_doc(doctype):
 	try:
 		git_link = '/'.join(['https://raw.githubusercontent.com/frappe',\
 			app, branch, doc_path.split('apps/'+app)[1]])
-		original_file = urllib2.urlopen(git_link).read()
+		original_file = urlopen(git_link).read()
 	except:
 		print('Did not find {0} in {1}'.format(doctype, app))
 		return