FileLogSink.h

//
//  FileLogSink.h
//  avara3d
//
//  Created by Morgan Davis on 11/9/23.
//  Copyright © 2026 Morgan K Davis. All rights reserved.
//
 
#ifndef AVARA3D_LOG_SINK_FILELOGSINK_H
#define AVARA3D_LOG_SINK_FILELOGSINK_H
 
#include <filesystem>
#include <fstream>
#include <iostream>
#include <memory>
#include <string>
#include <vector>
 
#include "a3d/log/sink/LogSink.h"
 
namespace a3d::log {
 
    class FileLogSink : public LogSink {
 
    public:
        // [Public Lifecycle Functions]
 
        explicit FileLogSink(const std::filesystem::path& relPath,
                             int                          maxFiles    = DEFAULT_MAX_FILES,
                             int                          maxFilesize = DEFAULT_MAX_FILESIZE);
 
        FileLogSink(const FileLogSink&)            = delete;
        FileLogSink& operator=(const FileLogSink&) = delete;
 
        FileLogSink(FileLogSink&&)            = delete;
        FileLogSink& operator=(FileLogSink&&) = delete;
 
        ~FileLogSink() override;
 
        // [Public Member Functions]
 
        const std::filesystem::path& filepath() const;
 
        int                          maxFiles() const;
 
        int                          maxFilesize() const;
 
        // [Public LogSink Member Functions]
 
        void                         write(const std::string& output, Level level) override;
 
        void                         flush() override;
 
    private:
        // [Private Constants]
 
        static constexpr unsigned      DEFAULT_MAX_FILES    = 5;
        static constexpr unsigned      DEFAULT_MAX_FILESIZE = 1024 * 1024 * 1; // 1MB
 
        // [Private Member Functions]
 
        void                           openStream();
        void                           checkRotate();
        void                           rotate();
 
        // [Private Member Variables]
 
        std::filesystem::path          _filepath;
        int                            _maxFiles;
        int                            _maxFilesize;
        std::shared_ptr<std::ofstream> _fileStream;
    };
 
}
 
#endif // AVARA3D_LOG_SINK_FILELOGSINK_H