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using System;
using System.Collections.Generic;
using System.Data.Common;
using System.Data.SqlClient;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using Gestor.Application.Helpers;
using Gestor.Infrastructure.UnitOfWork.Generic;
using Gestor.Infrastructure.UnitOfWork.Logic;
using Gestor.Model.Helper;
namespace Gestor.Application.Migration;
public class Migrator
{
private readonly Assembly _executingAssembly;
private static string _connection { get; set; }
public Migrator()
{
_executingAssembly = Assembly.GetExecutingAssembly();
}
public async Task<bool> Execute()
{
_ = 1;
try
{
return await ExecuteFiles(await GetAllFiles());
}
catch (Exception)
{
}
return false;
}
private async Task<string[]> GetAllFiles()
{
string folderName = _executingAssembly.GetName().Name + ".Migration.Files";
long lastUpdate = await LastUpdate();
return _executingAssembly.GetManifestResourceNames().Where(delegate(string r)
{
long num = 0L;
if (r.StartsWith(folderName) && r.EndsWith(".SQL"))
{
num = ValidationHelper.ToInt(ValidationHelper.Clear(ValidationHelper.Index(r.Split(new char[1] { '_' }), 1)));
}
return num > lastUpdate;
}).ToArray();
}
private async Task<bool> ExecuteFiles(IEnumerable<string> filesToExecute)
{
foreach (string fileName in filesToExecute.OrderBy((string x) => x))
{
using Stream resourceStream = _executingAssembly.GetManifestResourceStream(fileName);
if (resourceStream == null)
{
continue;
}
Encoding encoding = Encoding.GetEncoding("ISO-8859-1");
Encoding uTF = Encoding.UTF8;
using StreamReader streamReader = new StreamReader(resourceStream);
string s = streamReader.ReadToEnd();
byte[] bytes = uTF.GetBytes(s);
byte[] bytes2 = Encoding.Convert(uTF, encoding, bytes);
s = encoding.GetString(bytes2);
if (!(await ExecuteScript(s)))
{
return false;
}
if (!(await SaveUpdate(ValidationHelper.ToInt(ValidationHelper.Clear(ValidationHelper.Index(fileName.Split(new char[1] { '_' }), 1))))))
{
return false;
}
}
return true;
}
private static async Task<bool> ExecuteScript(string scriptText)
{
return await Task.Run(delegate
{
//IL_002e: Unknown result type (might be due to invalid IL or missing references)
//IL_0034: Expected O, but got Unknown
IEnumerable<string> enumerable = Regex.Split(scriptText, "^\\s*GO\\s*$", RegexOptions.IgnoreCase | RegexOptions.Multiline);
try
{
if (string.IsNullOrEmpty(_connection))
{
_connection = Connection.GetConnection();
}
SqlConnection val = new SqlConnection(_connection);
try
{
((DbConnection)(object)val).Open();
SqlCommand val2 = val.CreateCommand();
try
{
foreach (string item in enumerable)
{
if (!(item.Trim() == ""))
{
((DbCommand)(object)val2).CommandText = item;
((DbCommand)(object)val2).ExecuteNonQuery();
}
}
}
finally
{
((IDisposable)val2)?.Dispose();
}
}
finally
{
((IDisposable)val)?.Dispose();
}
return true;
}
catch (Exception)
{
return false;
}
});
}
private static async Task<bool> SaveUpdate(long fileId)
{
return await Task.Run(delegate
{
UnitOfWork commited = Instancia.Commited;
try
{
commited.AtualizacaoRepository.Save(fileId);
((GenericUnitOfWork)commited).Commit();
}
catch (Exception)
{
((GenericUnitOfWork)commited).Rollback();
return false;
}
finally
{
((IDisposable)commited)?.Dispose();
}
return true;
});
}
private static async Task<long> LastUpdate()
{
return await Task.Run(delegate
{
UnitOfWork commited = Instancia.Commited;
try
{
return commited.AtualizacaoRepository.FindLastUpdate();
}
finally
{
((IDisposable)commited)?.Dispose();
}
});
}
}
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