-- 单箱当前测量记录增量；可重复执行。
USE baiyue_firstleg;

DROP PROCEDURE IF EXISTS phase2_add_carton_measurement_column;
DELIMITER $$
CREATE PROCEDURE phase2_add_carton_measurement_column(
  IN p_column VARCHAR(64), IN p_definition TEXT)
BEGIN
  IF NOT EXISTS (
    SELECT 1 FROM information_schema.COLUMNS
    WHERE TABLE_SCHEMA = DATABASE()
      AND TABLE_NAME = 'fl_inbound_measurement_item'
      AND COLUMN_NAME = p_column
  ) THEN
    SET @ddl = CONCAT(
      'ALTER TABLE fl_inbound_measurement_item ADD COLUMN `',
      p_column, '` ', p_definition);
    PREPARE statement FROM @ddl;
    EXECUTE statement;
    DEALLOCATE PREPARE statement;
  END IF;
END$$
DELIMITER ;

CALL phase2_add_carton_measurement_column(
  'box_code',
  'VARCHAR(128) NULL COMMENT ''柏悦唛头箱号；设备单箱测量时同一客户内唯一'' AFTER external_detail_no');
CALL phase2_add_carton_measurement_column(
  'machine_no',
  'VARCHAR(64) NULL COMMENT ''本次测量设备编号'' AFTER source_image_file_id');
CALL phase2_add_carton_measurement_column(
  'device_measured_at',
  'DATETIME(3) NULL COMMENT ''本次设备测量时间'' AFTER machine_no');
CALL phase2_add_carton_measurement_column(
  'updated_at',
  'DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3) COMMENT ''最后更新时间'' AFTER created_at');

DROP PROCEDURE IF EXISTS phase2_add_carton_measurement_column;

SET @has_box_code_index = (
  SELECT COUNT(*) FROM information_schema.STATISTICS
  WHERE TABLE_SCHEMA = DATABASE()
    AND TABLE_NAME = 'fl_inbound_measurement_item'
    AND INDEX_NAME = 'uk_measure_box_code'
);
SET @ddl = IF(
  @has_box_code_index = 0,
  'ALTER TABLE fl_inbound_measurement_item ADD UNIQUE KEY uk_measure_box_code (tenant_id, box_code)',
  'SELECT 1'
);
PREPARE statement FROM @ddl;
EXECUTE statement;
DEALLOCATE PREPARE statement;