admin/Azaion.Common/Database/DbFactory.cs

using System.Diagnostics;
using LinqToDB;

namespace Azaion.Common.Database;

public interface IDbFactory
{
    Task<T> Run<T>(Func<AzaionDb, Task<T>> func);
    Task Run(Func<AzaionDb, Task> func);

    T Run<T>(Func<AzaionDb, T> func);
}

public class DbFactory : IDbFactory
{
    private readonly DataOptions _dataOptions;
    
    public DbFactory(string connectionString, bool useTracing = true, bool msSql = false)
    {
        if (string.IsNullOrEmpty(connectionString))
            throw new ArgumentException("Empty connectionString", nameof(connectionString));

        _dataOptions = new DataOptions()
            .UsePostgreSQL(connectionString)
            .UseMappingSchema(AzaionDbSchemaHolder.MappingSchema);

        if (useTracing) 
            _ = _dataOptions.UseTracing(TraceLevel.Info, t => Console.WriteLine(t.SqlText));
    }

    public async Task<T> Run<T>(Func<AzaionDb, Task<T>> func)
    {
        await using var db = new AzaionDb(_dataOptions);
        return await func(db);
    }
    
    public async Task Run(Func<AzaionDb, Task> func)
    {
        await using var db = new AzaionDb(_dataOptions);
        await func(db);
    }
    
    public T Run<T>(Func<AzaionDb, T> func)
    {
        using var db = new AzaionDb(_dataOptions);
        return func(db);
    }
}