-- Current schema for actual destination unloading; never an overseas warehouse receipt.
CREATE TABLE IF NOT EXISTS fl_direct_delivery_unloading (
  container_booking_id BIGINT UNSIGNED NOT NULL,
  inbound_id BIGINT UNSIGNED NOT NULL COMMENT 'Immutable physically loaded inbound source',
  actual_at DATETIME(3) NOT NULL COMMENT 'Actual destination local time',
  timezone VARCHAR(64) NOT NULL COMMENT 'Explicit destination IANA timezone',
  received_by VARCHAR(128) NOT NULL COMMENT 'Actual recipient',
  evidence_no VARCHAR(128) NOT NULL COMMENT 'Actual delivery receipt reference',
  remark VARCHAR(1000) NULL,
  version INT NOT NULL DEFAULT 1,
  idempotency_key VARCHAR(128) NOT NULL,
  request_hash CHAR(64) NOT NULL,
  created_by BIGINT UNSIGNED NOT NULL,
  created_by_name VARCHAR(64) NULL,
  created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
  PRIMARY KEY (container_booking_id,inbound_id),
  UNIQUE KEY uk_direct_unloading_command (container_booking_id,idempotency_key),
  CONSTRAINT fk_direct_unloading_container FOREIGN KEY (container_booking_id) REFERENCES fl_container_booking(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='直送目的仓真实卸货凭据';