ApiMantenzioniV2/ApiPolo/Interfaces/TenantDbContextFactory.cs

using ApiPolo.Data;
using ApiPolo.Interfaces;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;

public class TenantDbContextFactory : ITenantDbContextFactory
{
    private readonly IServiceProvider _serviceProvider;
    private readonly IConfiguration _configuration;

    public TenantDbContextFactory(IServiceProvider serviceProvider, IConfiguration configuration)
    {
        _serviceProvider = serviceProvider;
        _configuration = configuration;
    }

    public TenantDbContext GetDbContext(string tenant)
    {
        var optionsBuilder = new DbContextOptionsBuilder<TenantDbContext>();

        string connectionString = _configuration.GetConnectionString(tenant)
            ?? throw new KeyNotFoundException($"No connection string found for tenant: {tenant}");

        optionsBuilder.UseSqlServer(connectionString);

        return new TenantDbContext(optionsBuilder.Options, _configuration, tenant);
    }
}