using MAX.Framework.Logger;
using NLog;
using NLog.Config;
using NLog.Targets;
using Store.Management.Framework.Configs;
using System.Diagnostics;
using System.IO;
using System.Text;

namespace Store.Management.Framework.Services;

/// <summary>默认运行日志与不依赖容器的同步崩溃报告。</summary>
public static class ApplicationLogService
{
    public static void Initialize()
    {
        // 在加载文件配置前注入目录，配置自动重载时仍可读取。
        GlobalDiagnosticsContext.Set("LoggingFolder", FolderConfig.LoggingFolder);
        // 尊重宿主提供的 NLog 配置。
        if (LogManager.Configuration != null) return;
        var target = new FileTarget("application")
        {
            FileName = Path.Combine(FolderConfig.LoggingFolder, "${shortdate}.log"),
            Layout = "${longdate}|${level:uppercase=true}|${logger}|${message} ${exception:format=tostring}",
            Encoding = Encoding.UTF8,
            MaxArchiveDays = 30
        };
        var configuration = new LoggingConfiguration();
        configuration.AddRule(LogLevel.Debug, LogLevel.Fatal, target);
        LogManager.Configuration = configuration;
    }

    /// <returns>报告路径；所有目录均写入失败时返回 null。</returns>
    public static string? WriteFatal(Exception exception, string source)
    {
        ArgumentNullException.ThrowIfNull(exception);
        string id = $"{DateTime.UtcNow:yyyyMMdd-HHmmssfff}-{Guid.NewGuid():N}";
        string report = $"Id: {id}\nTime: {DateTimeOffset.Now:O}\nSource: {source}\nApp: {Config.AppFullName}\nVersion: {Config.Version}\nSession: {Config.SessionID}\nStarted: {Config.AppStartTime:O}\nWindows: {Config.WindowsVersion}\n{exception}";
        Debug.WriteLine(report);
        string? savedPath = null;
        foreach (string directory in new[] { FolderConfig.LoggingFolder, Path.Combine(Path.GetTempPath(), FolderConfig.AppName, "Logs") })
        {
            try
            {
                Directory.CreateDirectory(directory);
                savedPath = Path.Combine(directory, $"fatal-{id}.log");
                File.WriteAllText(savedPath, report, Encoding.UTF8);
                break;
            }
            catch (Exception ex) { savedPath = null; Debug.WriteLine(ex); }
        }
        try
        {
            LogManager.GetLogger("GlobalLogger").Fatal(exception, "{0}: {1}; Report: {2}", source, id, savedPath);
            LogManager.Flush(TimeSpan.FromSeconds(2));
        }
        catch (Exception ex) { Debug.WriteLine(ex); }
        return savedPath;
    }
}