microting/eform-sdk-dotnet

/*
The MIT License (MIT)

Copyright (c) 2007 - 2020 Microting A/S

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/

using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Microting.eForm.Dto;

namespace Microting.eForm
{
    public class Log
    {
        #region var

        private readonly LogWriter logWriter;
        private readonly Tools t = new Tools();
        private readonly List<ExceptionClass> exceptionLst = new List<ExceptionClass>();

        #endregion

        // con
        public Log(LogWriter logWriter)
        {
            this.logWriter = logWriter;
        }

        #region public

        public void LogEverything(string type, string message)
        {
            LogLogic(new LogEntry(4, type, message));
        }

        #region public void     LogVariable (string type, ... variableName, string variableContent)

        public void LogVariable(string type, string variableName, string variableContent)
        {
            if (variableContent == null)
                variableContent = "[null]";

            LogLogic(new LogEntry(3, type, "Variable Name:" + variableName + " / Content:" + variableContent));
        }

        public void LogVariable(string type, string variableName, int? variableContent)
        {
            LogVariable(type, variableName, variableContent.ToString());
        }

        public void LogVariable(string type, string variableName, bool? variableContent)
        {
            LogVariable(type, variableName, variableContent.ToString());
        }

        public void LogVariable(string type, string variableName, DateTime? variableContent)
        {
            LogVariable(type, variableName, variableContent.ToString());
        }

        #endregion

        public void LogStandard(string type, string message)
        {
            LogLogic(new LogEntry(2, type, message));
        }

        public void LogCritical(string type, string message)
        {
            LogLogic(new LogEntry(1, type, message));
        }

        public void LogWarning(string type, string message)
        {
            LogLogic(new LogEntry(0, type, message));
        }

        public void LogException(string type, string exceptionDescription, Exception exception)
        {
            try
            {
                string fullExceptionDescription = t.PrintException(exceptionDescription, exception);
                if (fullExceptionDescription.Contains("Message    :Core is not running"))
                    return;

                LogLogic(new LogEntry(-1, type, fullExceptionDescription));

                ExceptionClass exCls = new ExceptionClass(fullExceptionDescription, DateTime.UtcNow);
                exceptionLst.Add(exCls);

                int sameExceptionCount = CheckExceptionLst(exCls);
                int sameExceptionCountMax = 0;

                foreach (var item in exceptionLst)
                    if (sameExceptionCountMax < item.Occurrence)
                        sameExceptionCountMax = item.Occurrence;
            }
            catch
            {
            }
        }

        public void LogFatalException(string exceptionDescription, Exception exception)
        {
            try
            {
                LogLogic(new LogEntry(-3, "FatalException", t.PrintException(exceptionDescription, exception)));
            }
            catch
            {
            }
        }

        #endregion

        #region private

        private int CheckExceptionLst(ExceptionClass exceptionClass)
        {
            int count = 0;

            #region find count

            try
            {
                //remove Exceptions older than an hour
                for (int i = exceptionLst.Count; i < 0; i--)
                    if (exceptionLst[i].Time < DateTime.UtcNow.AddHours(-1))
                        exceptionLst.RemoveAt(i);

                //keep only the last 12 Exceptions
                while (exceptionLst.Count > 12)
                    exceptionLst.RemoveAt(0);

                //find court of the same Exception
                if (exceptionLst.Count > 0)
                {
                    string thisOne = t.Locate(exceptionClass.Description, "######## EXCEPTION FOUND; BEGIN ########",
                        "######## EXCEPTION FOUND; ENDED ########");

                    foreach (ExceptionClass exCls in exceptionLst)
                    {
                        string fromLst = t.Locate(exCls.Description, "######## EXCEPTION FOUND; BEGIN ########",
                            "######## EXCEPTION FOUND; ENDED ########");

                        if (thisOne == fromLst)
                            count++;
                    }
                }
            }
            catch
            {
            }

            #endregion

            exceptionClass.Occurrence = count;
            LogStandard(t.GetMethodName("Log"), count + ". time the same Exception, within the last hour");
            return count;
        }

        private void LogLogic(LogEntry logEntry)
        {
            logWriter.WriteLogEntry(logEntry);
        }

        #endregion
    }

    public class CoreBase
    {
        public virtual Task Restart(int sameExceptionCount, int sameExceptionCountMax)
        {
            throw new Exception("CoreBase." + "Restart" +
                                " method should never actually be called. Core should override");
        }
    }

    public class LogWriter
    {
#pragma warning disable 1998
        public virtual void WriteLogEntry(LogEntry logEntry)
        {
            throw new Exception("SqlControllerBase." + "LogText" +
                                " method should never actually be called. SqlController should override");
        }
#pragma warning restore 1998

        public virtual void WriteIfFailed(string str)
        {
            throw new Exception("SqlControllerBase." + "LogText" +
                                " method should never actually be called. SqlController should override");
        }
    }

    public class LogEntry
    {
        public LogEntry(int level, string type, string message)
        {
            Time = DateTime.UtcNow;
            Level = level;
            Type = type;
            Message = message;
        }

        public DateTime Time { get; }
        public int Level { get; }
        public string Type { get; }
        public string Message { get; }
    }
}