logger.hpp

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#pragma once
 
#include <vector>
#include <memory>
#include <string>
#include <set>
#include "core/event_bus.hpp"
#include "core/log_level.hpp"
#include "core/log_writer.hpp"
 
namespace financesim {
 
class Logger {
public:
    Logger();
    ~Logger();
 
    // Non-copyable
    Logger(const Logger&) = delete;
    Logger& operator=(const Logger&) = delete;
 
    void set_level(LogLevel level);
 
    LogLevel level() const { return level_; }
 
    void add_writer(LogWriterPtr writer);
 
    void clear_writers();
 
    void add_type_filter(const std::string& type_name);
 
    void clear_type_filters();
 
    void add_source_filter(const std::string& source_id);
 
    void clear_source_filters();
 
    void set_time_range(SimTime start, SimTime end);
 
    void clear_time_range();
 
    void attach(EventBus& bus);
 
    void detach();
 
    void flush();
 
    bool is_attached() const { return subscription_id_ != 0; }
 
private:
    void on_event(const EventPtr& event);
    bool passes_filters(const Event& event) const;
    LogLevel classify_event(const Event& event) const;
 
    LogLevel level_ = LogLevel::INFO;
    std::vector<LogWriterPtr> writers_;
    std::set<std::string> type_filters_;
    std::set<std::string> source_filters_;
    SimTime time_start_ = -1.0;
    SimTime time_end_ = -1.0;
    bool time_filter_active_ = false;
 
    EventBus* bus_ = nullptr;
    SubscriptionId subscription_id_ = 0;
};
 
} // namespace financesim