-- Estado documental: CURRENT como runbook correctivo para entornos legacy.
-- Elimina columnas obsoletas de snapshot VeriFactu en `issued_invoices`.
-- Refuerza el SSOT vigente: `IssuedInvoice` no debe persistir
-- `verifactu_profile_status`, `uses_verifactu` ni `verifactu_effective_at`.
-- Ejecutar solo en una BD de desarrollo segura o mediante procedimiento controlado.
-- No ejecutar automaticamente en produccion.

SET @target_schema = DATABASE();

-- Comprobacion previa recomendada.
-- SELECT column_name, is_nullable, column_type
-- FROM information_schema.columns
-- WHERE table_schema = @target_schema
--   AND table_name = 'issued_invoices'
--   AND column_name IN (
--     'verifactu_profile_status',
--     'uses_verifactu',
--     'verifactu_effective_at'
--   );

SET
    @ddl = (
        SELECT IF(
                EXISTS (
                    SELECT 1
                    FROM information_schema.columns
                    WHERE
                        table_schema = @target_schema
                        AND table_name = 'issued_invoices'
                        AND column_name = 'verifactu_effective_at'
                ), 'ALTER TABLE issued_invoices DROP COLUMN verifactu_effective_at', 'SELECT ''verifactu_effective_at already dropped'''
            )
    );

PREPARE stmt FROM @ddl;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

SET
    @ddl = (
        SELECT IF(
                EXISTS (
                    SELECT 1
                    FROM information_schema.columns
                    WHERE
                        table_schema = @target_schema
                        AND table_name = 'issued_invoices'
                        AND column_name = 'uses_verifactu'
                ), 'ALTER TABLE issued_invoices DROP COLUMN uses_verifactu', 'SELECT ''uses_verifactu already dropped'''
            )
    );

PREPARE stmt FROM @ddl;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

SET
    @ddl = (
        SELECT IF(
                EXISTS (
                    SELECT 1
                    FROM information_schema.columns
                    WHERE
                        table_schema = @target_schema
                        AND table_name = 'issued_invoices'
                        AND column_name = 'verifactu_profile_status'
                ), 'ALTER TABLE issued_invoices DROP COLUMN verifactu_profile_status', 'SELECT ''verifactu_profile_status already dropped'''
            )
    );

PREPARE stmt FROM @ddl;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

-- Validacion minima posterior a la DDL.
-- SELECT column_name
-- FROM information_schema.columns
-- WHERE table_schema = DATABASE()
--   AND table_name = 'issued_invoices'
--   AND column_name IN (
--     'verifactu_profile_status',
--     'uses_verifactu',
--     'verifactu_effective_at'
--   );