-- Estado documental: SUPERSEDED / solo auditoria legacy.
-- Este script responde a una propuesta antigua que reintroducia
-- `verifactu_profile_status`, `uses_verifactu` y `verifactu_effective_at`
-- en `issued_invoices`.
-- No es SSOT vigente y no debe ejecutarse como camino normal en entornos nuevos.
-- Ejecutar solo para auditar drift historico o comparar esquemas legacy.

SET @target_schema = DATABASE();

SET
    @ddl = (
        SELECT IF(
                EXISTS (
                    SELECT 1
                    FROM information_schema.columns
                    WHERE
                        table_schema = @target_schema
                        AND table_name = 'issued_invoices'
                        AND column_name = 'operation_qualification_code'
                ), 'SELECT ''operation_qualification_code already exists''', 'ALTER TABLE issued_invoices ADD COLUMN operation_qualification_code VARCHAR(64) NULL AFTER tax_regime_description'
            )
    );

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 = 'exemption_reason_code'
                ), 'SELECT ''exemption_reason_code already exists''', 'ALTER TABLE issued_invoices ADD COLUMN exemption_reason_code VARCHAR(64) NULL AFTER operation_qualification_code'
            )
    );

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'
                ), 'SELECT ''verifactu_profile_status already exists''', 'ALTER TABLE issued_invoices ADD COLUMN verifactu_profile_status VARCHAR(64) NULL AFTER exemption_reason_code'
            )
    );

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'
                ), 'SELECT ''uses_verifactu already exists''', 'ALTER TABLE issued_invoices ADD COLUMN uses_verifactu TINYINT(1) NULL AFTER verifactu_profile_status'
            )
    );

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_effective_at'
                ), 'SELECT ''verifactu_effective_at already exists''', 'ALTER TABLE issued_invoices ADD COLUMN verifactu_effective_at DATETIME NULL AFTER uses_verifactu'
            )
    );

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 (
--     'operation_qualification_code',
--     'exemption_reason_code',
--     'verifactu_profile_status',
--     'uses_verifactu',
--     'verifactu_effective_at'
--   );