Allow watchers to see private threads, add list of users able to see thread

app/models/threads.py

@@ -20,7 +20,7 @@ from typing import Tuple, List
 from flask import url_for
 
 from . import db
-from .users import Permission, UserRank
+from .users import Permission, UserRank, User
 from .packages import Package
 
 watchers = db.Table("watchers",
@@ -88,7 +88,7 @@ class Thread(db.Model):
 		if self.package:
 			isMaintainer = isMaintainer or user in self.package.maintainers
 
-		canSee = not self.private or isMaintainer or user.rank.atLeast(UserRank.APPROVER)
+		canSee = not self.private or isMaintainer or user.rank.atLeast(UserRank.APPROVER) or user in self.watchers
 
 		if perm == Permission.SEE_THREAD:
 			return canSee
@@ -107,6 +107,20 @@ class Thread(db.Model):
 		else:
 			raise Exception("Permission {} is not related to threads".format(perm.name))
 
+	def get_visible_to(self) -> list[User]:
+		retval = {
+			self.author.username: self.author
+		}
+
+		for user in self.watchers:
+			retval[user.username] = user
+
+		if self.package:
+			for user in self.package.maintainers:
+				retval[user.username] = user
+
+		return list(retval.values())
+
 	def get_latest_reply(self):
 		return ThreadReply.query.filter_by(thread_id=self.id).order_by(db.desc(ThreadReply.id)).first()
 

app/templates/threads/view.html

@@ -81,14 +81,30 @@
 
 	{% if thread.package %}
 		<p>
-			{{ _("Package") }}: <a href="{{ thread.package.getURL("packages.view") }}">{{ thread.package.title }}</a>
+			{{ _("Package") }}: <a href="{{ thread.package.getURL('packages.view') }}">{{ thread.package.title }}</a>
 		</p>
 	{% endif %}
 
 	{% if thread.private %}
-		<i>
-			{{ _("This thread is only visible to its creator, the package owner, and users of Approver rank or above.") }}
-		</i>
+		<aside class="row">
+			<div class="col-md-9">
+				<i>
+					{{ _("This thread is only visible to its creator, the package owner, and users of Approver rank or above.") }}
+				</i>
+			</div>
+			<div class="col-md-3">
+				<div class="d-flex flex-row justify-content-end flex-wrap align-items-center" style="gap: 0.5em;">
+					{% for viewer in thread.get_visible_to() %}
+						<a href="{{ url_for('users.profile', username=viewer.username) }}" title="{{ viewer.display_name }}">
+							<img style="max-height: 2em;" src="{{ viewer.getProfilePicURL() }}" alt="{{ viewer.display_name }}" />
+						</a>
+					{% endfor %}
+					<a href="{{ url_for('users.list_all') }}" title="{{ _('Plus approvers and editors') }}">
+						+ <i class="fas fa-user-check"></i>
+					</a>
+				</div>
+			</div>
+		</aside>
 	{% endif %}
 
 	{% from "macros/threads.html" import render_thread %}