ReC/src/ReC.Application/Common/Interfaces/IRecDbContext.cs

using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Infrastructure;
using ReC.Domain.QueryOutput;
using ReC.Domain.Views;
using System.Text.Json;

namespace ReC.Application.Common.Interfaces;

public interface IRecDbContext
{
    #region DbSets
    public DbSet<RecActionView> RecActionViews { get; set; }

    public DbSet<ProfileView> ProfileViews { get; set; }

    public DbSet<ResultView> RecResultViews { get; set; }

    public DbSet<HeaderQueryResult> HeaderQueryResults { get; set; }

    public DbSet<BodyQueryResult> BodyQueryResults { get; set; }

    public DbSet<InsertObjectResult> RecResults { get; set; }
    #endregion DbSets

    public Task<int> SaveChangesAsync(CancellationToken cancel = default);

    public DatabaseFacade Database { get; }
}

public static class RecDbContextSaveExtensions
{
    public static async Task<string> ExecuteDynamicSqlAsync(this IRecDbContext context, string sql)
    {
        var result = new List<Dictionary<string, object?>>();

        using var command = context.Database.GetDbConnection().CreateCommand();

        command.CommandText = sql;

        await context.Database.OpenConnectionAsync();

        using var reader = await command.ExecuteReaderAsync();
        while (await reader.ReadAsync())
        {
            var row = new Dictionary<string, object?>();

            for (int i = 0; i < reader.FieldCount; i++)
            {
                var columnName = reader.GetName(i);
                var value = reader.IsDBNull(i) ? null : reader.GetValue(i);

                row[columnName] = value;
            }

            result.Add(row);
        }

        return JsonSerializer.Serialize(result);
    }
}