// Copyright (c) 2017- Informatikbüro Daniel Schick
// Description: Controller class for reading excel sheets (label-based)

using bsmd.database;
using log4net;
using System;
using System.Collections.Generic;
using System.IO;

namespace ENI2.Import
{
    public class ExcelManager
    {        
        private readonly ILog _log = LogManager.GetLogger(typeof(ExcelManager));

        public ExcelManager()
        {
            Directory.SetCurrentDirectory(AppDomain.CurrentDomain.BaseDirectory);            
        }

        public bool Import(string filePath, MessageCore core, List<Message.NotificationClass> classes, out string readMessage)
        {
            bool result = false;
            try
            {
                using (ExcelReader reader = new ExcelReader(filePath))
                {                    
                    ImportHeader importHeader = new ImportHeader
                    {
                        ImportDate = DateTime.Now
                    };
                    result = ExcelUtil.ProcessSheet(reader, out readMessage, core, classes); // actual import
                    if (result)
                    {
                        importHeader.MessageCoreId = core.Id.Value;
                        importHeader.Filename = Path.GetFileName(filePath);
                        ReportingParty thisUser = ReportingParty.CurrentReportingParty;
                        importHeader.SenderEmail = thisUser.EMail;
                        importHeader.ReportingPartyId = thisUser.Id;

                        DBManager.Instance.Save(importHeader);
                        // Saving plaintext data (ImportHeader + ImportValues) for each reading
                        List<ImportValue> valueList = importHeader.CreateUpdateList(reader.ImportValues);
                        // Bulk save recommended here..
                        ImportValue.BulkSave(valueList);
                    }                    
                }
            }
            catch (Exception ex)
            {
                readMessage = ex.Message;
                _log.Error(ex);
            }
            return result; 
        }        
    }
}