Implement media unquarantine command

synadm/api.py

@@ -835,6 +835,13 @@ def media_quarantine(self, server_name, media_id):
             "post", f"v1/media/quarantine/{server_name}/{media_id}", data={}
         )
 
+    def media_unquarantine(self, server_name, media_id):
+        """ Removes a single piece of local or remote media from quarantine.
+        """
+        return self.query(
+            "post", f"v1/media/unquarantine/{server_name}/{media_id}", data={}
+        )
+
     def room_media_quarantine(self, room_id):
         """ Quarantine all local and remote media in a room
         """

synadm/cli/media.py

@@ -142,6 +142,43 @@ def media_quarantine_cmd(helper, server_name, media_id, user_id, room_id):
     helper.output(media_quarantined)
 
 
+@media.command(name="unquarantine")
+@optgroup.group(
+    "unquarantine media by",
+    cls=RequiredAnyOptionGroup,
+    help="")
+@optgroup.option(
+    "--media-id", "-i", type=str,
+    help="""The media with this specific media ID will be removed from
+    quarantine.
+    """)
+@click.option(
+    "--server-name", "-s", type=str,
+    help="""The server name of the media, mandatory when --media-id is used and
+    _remote_ media should be processed. For locally stored media this option
+    can be omitted.
+    """)
+@click.pass_obj
+def media_unquarantine_cmd(helper, server_name, media_id):
+    """ Remove media from quarantine.
+    """
+    if media_id and not server_name:
+        # We assume it is local media and fetch our own server name.
+        fetched_name = helper.retrieve_homeserver_name(
+            helper.config["base_url"])
+        unquarantinend = helper.api.media_unquarantine(fetched_name, media_id)
+    elif server_name and not media_id:
+        click.echo("Media ID missing.")
+        unquarantinend = None
+    elif media_id and server_name:
+        unquarantinend = helper.api.media_unquarantine(server_name, media_id)
+
+    if unquarantinend is None:
+        click.echo("Media could not be removed from quarantine.")
+        raise SystemExit(1)
+    helper.output(unquarantinend)
+
+
 @media.command(name="protect")
 @click.argument("media_id", type=str)
 @click.pass_obj