using AMREZ.EOP.Abstractions.Applications.Tenancy;
using AMREZ.EOP.Abstractions.Applications.UseCases.Tenancy;
using AMREZ.EOP.Infrastructures.Data;
using AMREZ.EOP.Infrastructures.Options;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Options;

namespace AMREZ.EOP.Infrastructures.Tenancy;

public sealed class TenantProvisioner : ITenantProvisioner
{
    private readonly TenantMap _map;
    private readonly ITenantDbContextFactory _factory;
    private readonly IOptions<AuthOptions> _conn;

    public TenantProvisioner(TenantMap map, ITenantDbContextFactory factory, IOptions<AuthOptions> conn)
    { _map = map; _factory = factory; _conn = conn; }

    public async Task ProvisionAsync(string tenantKey, CancellationToken ct = default)
    {
        if (!_map.TryGetBySlug(tenantKey, out var ctx))
        {
            ctx = new TenantContext
            {
                Id = tenantKey,
                Schema = tenantKey,
                ConnectionString = _conn.Value.DefaultConnection,
                Mode = AMREZ.EOP.Domain.Shared.Tenancy.TenantMode.Rls
            };
            _map.UpsertTenant(tenantKey, (TenantContext)ctx);
        }

        if (_conn.Value.UseSchemaPerTenant)
        {
            await using var db = _factory.Create<AppDbContext>(ctx);
            await db.Database.MigrateAsync(ct); // idempotent
        }
    }
}