using System.Collections.Generic;
using System.Linq;
using System;
using WebAPI.Services.Interfaces;
using System.Diagnostics;
using Church.Net.Entity;
using Church.Net.Entity.Interface;
using Church.Net.DAL.EFCoreDBF;
using Microsoft.EntityFrameworkCore;
using Newtonsoft.Json;

namespace WebAPI.Services
{
    public class DbLoggingService : ILoggingService
    {
        private readonly ICrudDAL<LogInfo> crudDAL;

        public DbLoggingService(ICrudDAL<LogInfo> crudDAL)
        {
            this.crudDAL = crudDAL;
        }

        public int Error(Exception exception)
        {
            string msg = exception.Message.ToString();
            string detailMsg = exception.InnerException != null ? exception.InnerException.Message : "";

            LogInfo log = new LogInfo(LogLevel.Error)
            {
                Message = msg,
                DetailMessage = detailMsg,
                Source = exception.Source,
                StackTrace = exception.StackTrace,
                UserId = ""
            };

            return AppendLog(log);
        }

        public int Error(Exception exception, string from)
        {
            string msg = exception.Message.ToString();
            string detailMsg = exception.InnerException != null ? exception.InnerException.Message : "";

            LogInfo log = new LogInfo(LogLevel.Error)
            {
                Url = from,
                Message = msg,
                DetailMessage = detailMsg,
                Source = exception.Source,
                StackTrace = exception.StackTrace
            };
            return AppendLog(log);
        }

        public int Error(Exception exception, string from, string detailMsg)
        {
            string msg = exception.Message.ToString();

            string exceptionDetailMsg = exception.InnerException != null ? exception.InnerException.Message : "";
            if (false == string.IsNullOrEmpty(exceptionDetailMsg))
            {
                detailMsg += Environment.NewLine + "=========== Exception Detail ==========";
                detailMsg += Environment.NewLine + exceptionDetailMsg;

            }
            LogInfo log = new LogInfo(LogLevel.Error)
            {
                Url = from,
                Message = msg,
                DetailMessage = detailMsg,
                Source = exception.Source,
                StackTrace = exception.StackTrace
            };
            return AppendLog(log);
        }

        public IEnumerable<LogInfo> GetAllErrors(DateTime? rangeStart = null, DateTime? rangeEnd = null)
        {
            IQueryable<LogInfo> query = crudDAL.GetDbSet().AsQueryable();

            if (rangeStart != null)
            {
                query = query.Where(l => l.Time >= rangeStart);
            }

            if (rangeEnd != null)
            {
                query = query.Where(l => l.Time <= rangeEnd);
            }

            return query.OrderByDescending(l => l.Time).ToList();
        }

        private int AppendLog(LogInfo log)
        {
            try
            {
                crudDAL.Create(log);
                return log.TrackNo;
            }
            catch (Exception ex)
            {
                WriteWindowsEventLog(ex);
                WriteWindowsEventLog(log);
                return -1;
            }
        }
        private void WriteWindowsEventLog(LogInfo log)
        {
            //var fileLogService = new FileLoggingService();
            //fileLogService.Error(new Exception(
            //    log.Source + Environment.NewLine + Environment.NewLine +
            //    log.Message + Environment.NewLine + Environment.NewLine +
            //    log.DetailMessage
            //    ));
            EventLog.WriteEntry("BeyondAPI",
                log.Source + Environment.NewLine + Environment.NewLine +
                log.Message + Environment.NewLine + Environment.NewLine +
                log.DetailMessage
                , EventLogEntryType.Error);
        }
        private void WriteWindowsEventLog(Exception ex)
        {
            //var fileLogService = new FileLoggingService();
            //fileLogService.Error(ex, "Can Not Append Error Log");
            EventLog.WriteEntry("BeyondAPI", $"Can Not Append Error Log:{ex.Message}", EventLogEntryType.Error);
        }

        public void Log(string message, object detail = null)
        {
            LogInfo log = new LogInfo(LogLevel.Info)
            {
                Message = message,
                DetailMessage = JsonConvert.SerializeObject(detail, Formatting.Indented),
                //Source = exception.Source,
                //StackTrace = exception.StackTrace
            };
            AppendLog(log);
        }

        public void Warning(string message, object detail)
        {

            LogInfo log = new LogInfo(LogLevel.Warning)
            {
                Message = message,
                DetailMessage = JsonConvert.SerializeObject(detail, Formatting.Indented),
                //Source = exception.Source,
                //StackTrace = exception.StackTrace
            };
            AppendLog(log);
        }

        IEnumerable<LogInfo> ILoggingService.GetAllErrors(DateTime? rangeStart, DateTime? rangeEnd)
        {
            throw new NotImplementedException();
        }

        public IEnumerable<LogInfo> GetAllLogs(LogLevel logLevel, DateTime? rangeStart = null, DateTime? rangeEnd = null)
        {
            throw new NotImplementedException();
        }
    }
}