modules/console: Add room messages cmd.

modules/console.cc

@@ -5241,6 +5241,52 @@ console_cmd__room__events(opt &out, const string_view &line)
 	return true;
 }
 
+bool
+console_cmd__room__messages(opt &out, const string_view &line)
+{
+	const params param{line, " ",
+	{
+		"room_id", "depth|-limit", "order", "limit"
+	}};
+
+	const auto &room_id
+	{
+		m::room_id(param.at(0))
+	};
+
+	const int64_t depth
+	{
+		param.at<int64_t>(1, std::numeric_limits<int64_t>::max())
+	};
+
+	const char order
+	{
+		param.at(2, "b"_sv).at(0)
+	};
+
+	ssize_t limit
+	{
+		depth < 0?
+			std::abs(depth):
+			param.at(3, ssize_t(32))
+	};
+
+	const m::room room
+	{
+		room_id
+	};
+
+	m::room::messages it{room};
+	if(depth >= 0 && depth < std::numeric_limits<int64_t>::max())
+		it.seek(depth);
+
+	for(; it && limit >= 0; order == 'b'? --it : ++it, --limit)
+		out << pretty_msgline(*it)
+		    << std::endl;
+
+	return true;
+}
+
 bool
 console_cmd__room__roots(opt &out, const string_view &line)
 {