From 04c3c6257cfee4dd9723a47db425d4a3ef237369 Mon Sep 17 00:00:00 2001
From: "Pavel \"LEdoian\" Turinsky" <ledoian@matfyz.cz>
Date: Mon, 6 Feb 2023 21:56:06 +0100
Subject: [PATCH] =?UTF-8?q?Podpora=20cc=20a=20bcc=20v=20{%maillink%}=20[ne?=
 =?UTF-8?q?otestov=C3=A1no]?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../templates/odevzdavatko/detail.html        |  3 +++
 odevzdavatko/views.py                         |  1 +
 various/templatetags/mail.py                  | 23 +++++++++++++++----
 3 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/odevzdavatko/templates/odevzdavatko/detail.html b/odevzdavatko/templates/odevzdavatko/detail.html
index 468b0322..73265563 100644
--- a/odevzdavatko/templates/odevzdavatko/detail.html
+++ b/odevzdavatko/templates/odevzdavatko/detail.html
@@ -21,6 +21,9 @@
     ({% maillink r.osoba.email to=r.osoba.email subject=predmetmailu %}){% if forloop.revcounter0 != 0 %}, {% endif %}
   {% endfor %}
   </p>
+  <p>
+    {% maillink "Poslat mail všem řešitelům" bcc=maily_vsech_resitelu subject=predmetmailu %}
+  </p>
 {% else %}
   <p>Řešitelé: {{ object.resitele.all | join:", " }}</p>
 {% endif %}
diff --git a/odevzdavatko/views.py b/odevzdavatko/views.py
index 57822bf4..9ac1ac29 100644
--- a/odevzdavatko/views.py
+++ b/odevzdavatko/views.py
@@ -240,6 +240,7 @@ class DetailReseniView(DetailView):
 
 		# Subject případného mailu (template neumí použitelně spojovat řetězce: https://stackoverflow.com/q/4386168)
 		ctx["predmetmailu"] = "Oprava řešení M&M "+self.reseni.problem.first().hlavni_problem.nazev
+		ctx["maily_vsech_resitelu"] = [y for x in self.reseni.resitele.all().values_list('osoba__email') for y in x]
 		return ctx
 
 	def get(self, request, *args, **kwargs):
diff --git a/various/templatetags/mail.py b/various/templatetags/mail.py
index 972040f6..ecbb2a39 100644
--- a/various/templatetags/mail.py
+++ b/various/templatetags/mail.py
@@ -4,21 +4,34 @@ from urllib.request import quote as urlencode
 register = template.Library()
 
 @register.simple_tag
-def mailurl(*, subject=None, body=None, to=[]):
-	"""TODO: Dokumentace"""
+def mailurl(*, subject=None, body=None, to=[], cc=[], bcc=[]):
+	"""Tag na vytváření správně zakódované mailto: adresy
+
+	Ref: RFC 6068, <https://en.wikipedia.org/wiki/Mailto>"""
 	if isinstance(to, str):
 		to = [to]
+	if isinstance(cc, str):
+		cc = [cc]
+	if isinstance(bcc, str):
+		bcc = [bcc]
 	assert isinstance(to, list)
+	assert isinstance(cc, list)
+	assert isinstance(bcc, list)
+	# FIXME: adresa není správně zakódovaná, rozbije se to na adresách s divnými znaky
 	parts = [
 		f'mailto:{str.join(",", to)}',
 		]
-	if len(to) < 1:
+	if len(to) + len(cc) + len(bcc) < 1:
 		raise ValueError('Cannot mail to empty set of people')
 
 	if subject:
 		parts.append(f'subject={urlencode(subject)}')
 	if body:
 		parts.append(f'body={urlencode(body)}')
+	if len(cc) > 0:
+		parts.append(f'cc={str.join(",", cc)}')
+	if len(bcc) > 0:
+		parts.append(f'bcc={str.join(",", bcc)}')
 	
 	if len(parts) > 1:
 		url = parts[0] + '?' + str.join('&', parts[1:])
@@ -27,8 +40,8 @@ def mailurl(*, subject=None, body=None, to=[]):
 	return url
 
 @register.simple_tag
-def maillink(text, subject=None, body=None, to=[], attrs=None):
-	url = mailurl(subject=subject, body=body, to=to)
+def maillink(text, subject=None, body=None, to=[], cc=[], bcc=[], attrs=None):
+	url = mailurl(subject=subject, body=body, to=to, cc=cc, bcc=bcc)
 	if not attrs: attrs = ''
 	mezera = ' '*bool(attrs)
 	full_link = f'<a href="{url}"{mezera}{attrs}>{text}</a>'