modules/client/directory/room: Implement Client 10.2.3 DELETE roomAlias.

modules/client/directory/room.cc

@@ -158,3 +158,95 @@ put__directory_room(client &client,
 		}
 	};
 }
+
+static resource::response
+delete__directory_room(client &client,
+                       const resource::request &request);
+
+resource::method
+directory_room_delete
+{
+	directory_room_resource, "DELETE", delete__directory_room,
+	{
+		directory_room_delete.REQUIRES_AUTH
+	}
+};
+
+resource::response
+delete__directory_room(client &client,
+                       const resource::request &request)
+{
+	if(request.parv.size() < 1)
+		throw m::NEED_MORE_PARAMS
+		{
+			"Room alias path parameter missing"
+		};
+
+	m::room::alias::buf room_alias
+	{
+		url::decode(room_alias, request.parv[0])
+	};
+
+	const m::room::id::buf room_id
+	{
+		m::room_id(room_alias)
+	};
+
+	const unique_mutable_buffer buf
+	{
+		48_KiB
+	};
+
+	// Generate the new content of the m.room.aliases
+	json::stack out{buf};
+	bool removed {false};
+	{
+		json::stack::object content
+		{
+			out
+		};
+
+		json::stack::array array
+		{
+			content, "aliases"
+		};
+
+		// Iterate existing aliases for host
+		const m::room::aliases aliases{room_id};
+		aliases.for_each(room_alias.host(), [&room_alias, &array, &removed]
+		(const m::room::alias &existing_alias)
+		{
+			// Check for existing
+			if(!iequals(existing_alias, room_alias))
+				array.append(existing_alias);
+			else
+				removed = true;
+
+			return true;
+		});
+	}
+
+	if(!removed)
+		return resource::response
+		{
+			client, http::OK
+		};
+
+	// Commit the new event
+	// TODO: ABA with another aliases event.
+	const auto eid
+	{
+		m::send(room_id, request.user_id, "m.room.aliases", room_alias.host(), json::object
+		{
+			out.completed()
+		})
+	};
+
+	return resource::response
+	{
+		client, json::members
+		{
+			{ "event_id", eid }
+		}
+	};
+}