using Amazon.Runtime;


using NLog;
using NLog.AWS.Logger;
using NLog.Config;
using NLog.Layouts;


namespace ServerCore;

public static class CloudWatchLog
{
    private static bool m_is_opened = true;

    public static bool setup( string? logGroup = null, string? logNamePattern = null, string? logLevel = null
                            , string? awsRegion = null, string? awsAccessKey = null, string? awsSecretKey = null
                            , Layout? layout = null )
    {
        if ( logGroup == string.Empty ||
             logNamePattern == string.Empty ||
             logLevel == string.Empty ||
             awsRegion == string.Empty || 
             awsAccessKey == string.Empty ||
             awsSecretKey == string.Empty )
        {
            return false;
        }

        var current_config = LogManager.Configuration;
        if(null == current_config)
        {
            return false;
        }

        var aws_target = new AWSTarget()
        {
            LogGroup = logGroup,
            Region = awsRegion,
            Credentials = new BasicAWSCredentials(awsAccessKey, awsSecretKey),
            Layout = layout
        };

        var newRule = new LoggingRule(logNamePattern, LogLevel.FromString(logLevel), aws_target);
        current_config.LoggingRules.Add(newRule);

        LogManager.ReconfigExistingLoggers();

        return true;
    }

    public static void setClosed() => m_is_opened = false;

    public static bool isOpened() => m_is_opened;
}