IW4M-Admin/Application/Factories/DatabaseContextFactory.cs

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using System;
using Data.Abstractions;
using Data.Context;
using Data.MigrationContext;
using Microsoft.EntityFrameworkCore;
using SharedLibraryCore.Configuration;
namespace IW4MAdmin.Application.Factories
{
/// <summary>
/// implementation of the IDatabaseContextFactory interface
/// </summary>
public class DatabaseContextFactory : IDatabaseContextFactory
{
private readonly DbContextOptions _contextOptions;
private readonly string _activeProvider;
public DatabaseContextFactory(ApplicationConfiguration appConfig, DbContextOptions contextOptions)
{
_contextOptions = contextOptions;
_activeProvider = appConfig.DatabaseProvider?.ToLower();
}
/// <summary>
/// creates a new database context
/// </summary>
/// <param name="enableTracking">indicates if entity tracking should be enabled</param>
/// <returns></returns>
public DatabaseContext CreateContext(bool? enableTracking = true)
{
var context = BuildContext();
enableTracking ??= true;
if (enableTracking.Value)
{
context.ChangeTracker.AutoDetectChangesEnabled = true;
context.ChangeTracker.LazyLoadingEnabled = true;
context.ChangeTracker.QueryTrackingBehavior = QueryTrackingBehavior.TrackAll;
}
else
{
context.ChangeTracker.AutoDetectChangesEnabled = false;
context.ChangeTracker.LazyLoadingEnabled = false;
context.ChangeTracker.QueryTrackingBehavior = QueryTrackingBehavior.NoTracking;
}
return context;
}
private DatabaseContext BuildContext()
{
return _activeProvider switch
{
"sqlite" => new SqliteDatabaseContext(_contextOptions),
"mysql" => new MySqlDatabaseContext(_contextOptions),
"postgresql" => new PostgresqlDatabaseContext(_contextOptions),
_ => throw new ArgumentException($"No context found for {_activeProvider}")
};
}
}
}