HLib/Commons/LoggerUxer.cs

using KssSmaPlaLib.Ini;
using Serilog;
using Serilog.Events;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;

namespace KssSmaPlaLib.Commons
{
    /// <summary>
    /// ロガー
    /// </summary>
    public static class LoggerUxer
    {
        /// <summary>
        /// 初期化
        /// </summary>
        /// <param name="iniPath">ログINIファイルパス</param>
        public static void Initialize(string iniPath)
        {
            EnsureIniExists(iniPath);
            var config = IniReferenceResolveUxer.ReadSectionWithReference(iniPath, "Logging");

            var level = Enum.TryParse(config["LogLevel"], out LogEventLevel parsedLevel)
                ? parsedLevel
                : LogEventLevel.Information;

            var path = config["LogFilePath"];
            var rolling = config["RollingInterval"];

            Log.Logger = new LoggerConfiguration()
                .MinimumLevel.Is(level)
                .WriteTo.Console()
                .WriteTo.File(path, rollingInterval: (RollingInterval)Enum.Parse(typeof(RollingInterval), rolling))
                .CreateLogger();
        }

        public static void Info(string message) => Log.Information(message);
        public static void Warn(string message) => Log.Warning(message);
        public static void Error(string message) => Log.Error(message);
        public static void Close() => Log.CloseAndFlush();

        public static void StartInfo()
        {
            // DLL（自身）のアセンブリ
            var dllAssembly = Assembly.GetExecutingAssembly();
            var dllVersion = dllAssembly.GetName().Version?.ToString();
            var dllProduct = dllAssembly.GetCustomAttribute<AssemblyProductAttribute>()?.Product ?? "不明";

            // EXE（呼び出し元）のアセンブリ
            var exeAssembly = Assembly.GetEntryAssembly();
            var exeVersion = exeAssembly?.GetName().Version?.ToString();
            var exeProduct = exeAssembly?.GetCustomAttribute<AssemblyProductAttribute>()?.Product ?? "不明";

            // ログ出力
            Info($"[EXE] 製品名: {exeProduct}, バージョン: {exeVersion}");
            Info($"[DLL] 製品名: {dllProduct}, バージョン: {dllVersion}");
        }

        /// <summary>
        /// ログINI初期化（無ければ）
        /// </summary>
        /// <param name="path">ログINIファイルパス</param>
        private static void EnsureIniExists(string path)
        {
            if (!File.Exists(path))
            {
                File.WriteAllLines(path, new[]
                {
                    "[Logging]",
                    "LogLevel=Information",
                    "LogFilePath=log.txt",
                    "RollingInterval=Day"
                });
            }
        }
    }
}