feat: ✨ reimplement log event handler; add logging customization via …

…environment variable

src/saber.cpp

@@ -18,7 +18,48 @@ Saber::Saber(std::string_view token)
 	  shard{ekizu::ShardId::ONE, token, ekizu::Intents::AllIntents} {
 	logger = spdlog::stdout_color_mt("logger");
 	spdlog::set_pattern("[%Y-%m-%d %H:%M:%S.%e] [%^%l%$] %v");
-	spdlog::set_level(spdlog::level::debug);
+
+#ifdef _DEBUG
+	auto level = spdlog::level::debug;
+#else
+	auto level = spdlog::level::info;
+#endif
+
+	if (const auto *log_level_e = std::getenv("SABER_LOG_LEVEL");
+		log_level_e != nullptr) {
+		std::string_view log_level{log_level_e};
+
+		if (log_level == "info") {
+			level = spdlog::level::info;
+		} else if (log_level == "warn") {
+			level = spdlog::level::warn;
+		} else if (log_level == "error") {
+			level = spdlog::level::err;
+		} else if (log_level == "debug") {
+			level = spdlog::level::debug;
+		} else if (log_level == "trace") {
+			level = spdlog::level::trace;
+		} else if (log_level == "critical") {
+			level = spdlog::level::critical;
+		} else if (log_level == "off") {
+			level = spdlog::level::off;
+		}
+	}
+
+	spdlog::set_level(level);
+
+	shard.attach_logger([this](const ekizu::Log &log) {
+		switch (log.level) {
+			case ekizu::LogLevel::Info: logger->info(log.message); break;
+			case ekizu::LogLevel::Warn: logger->warn(log.message); break;
+			case ekizu::LogLevel::Error: logger->error(log.message); break;
+			case ekizu::LogLevel::Debug: logger->debug(log.message); break;
+			case ekizu::LogLevel::Trace: logger->trace(log.message); break;
+			case ekizu::LogLevel::Critical:
+				logger->critical(log.message);
+				break;
+		}
+	});
 }
 
 void Saber::run(const boost::asio::yield_context &yield) {
@@ -59,7 +100,6 @@ void Saber::handle_event(ekizu::Event ev,
 					 users_cache.put(m.message.author.id, m.message.author);
 					 commands.process_commands(m.message, yield);
 				 },
-				 [this](const ekizu::Log &l) { logger->debug(l.message); },
 				 [this](ekizu::Resumed) { logger->info("Resumed"); },
 				 [this](const auto &e) {
 					 logger->warn("Unhandled event: {}", typeid(e).name());