text: # Copyright (c) 2013, Web Notes Technologies Pvt. Ltd. and Contributors
  # MIT License. See license.txt
  
  import frappe
  import frappe.utils, markdown2
  from frappe.website.render import clear_cache
  
  from frappe import _
  
  @frappe.whitelist(allow_guest=True)
  def add_comment(args=None):
  	"""
  		args = {
  			'comment': '',
  			'comment_by': '',
  			'comment_by_fullname': '',
  			'comment_doctype': '',
  			'comment_docname': '',
  			'page_name': '',
  		}
  	"""
  
  	if not args:
  		args = frappe.local.form_dict
  	args['doctype'] = "Comment"
  
  	page_name = args.get("page_name")
  	if "page_name" in args:
  		del args["page_name"]
  	if "cmd" in args:
  		del args["cmd"]
  
  	comment = frappe.get_doc(args)
  	comment.ignore_permissions = True
  	comment.insert()
  
  	# since comments are embedded in the page, clear the web cache
  	clear_cache(page_name)
  
  	# notify commentors
  	commentors = [d[0] for d in frappe.db.sql("""select comment_by from tabComment where
  		comment_doctype=%s and comment_docname=%s and
  		ifnull(unsubscribed, 0)=0""", (comment.comment_doctype, comment.comment_docname))]
  
  	owner = frappe.db.get_value(comment.comment_doctype, comment.comment_docname, "owner")
  	recipients = commentors if owner=="Administrator" else list(set(commentors + [owner]))
  
  
  	from frappe.utils.email_lib.bulk import send
  	send(recipients=recipients,
  		doctype='Comment',
  		email_field='comment_by',
  		subject = _("New comment on {0} {1}").format(comment.comment_doctype, comment.comment_docname),
  		message = _("{0} by {1}").format(markdown2.markdown(args.get("comment")), comment.comment_by_fullname),
  		ref_doctype=comment.comment_doctype, ref_docname=comment.comment_docname)
  
  	template = frappe.get_template("templates/includes/comment.html")
  
  	return template.render({"comment": comment.as_dict()})
  