-- Run this script against the configured planning MySQL/MariaDB database.
-- Keep this table independent from alibaba_1688_products so deletion/re-import
-- cannot bypass the one-encoding-per-1688-ID rule.
CREATE TABLE IF NOT EXISTS alibaba_1688_product_encodings (
  id BIGINT PRIMARY KEY AUTO_INCREMENT COMMENT '编码登记主键',
  product_id VARCHAR(80) NOT NULL COMMENT '1688 商品 ID，全局唯一且删除商品后仍保留',
  status VARCHAR(20) NOT NULL DEFAULT 'encoding' COMMENT 'encoding/encoded/failed/conflict',
  claim_token CHAR(36) NULL COMMENT '本次编码占用令牌',
  request_json LONGTEXT NULL COMMENT '提交编码服务的完整业务参数',
  response_json LONGTEXT NULL COMMENT '编码服务原始成功响应',
  style_code VARCHAR(160) NULL COMMENT '主款式编码',
  style_codes_json LONGTEXT NULL COMMENT '全部款式编码',
  product_codes_json LONGTEXT NULL COMMENT '全部规格商品编码',
  sku_mapping_json LONGTEXT NULL COMMENT '1688 SKU 与商品编码映射',
  source_sku_count INT NULL COMMENT '编码时的 SKU 数量',
  source_sku_fingerprint CHAR(64) NULL COMMENT '编码时的有序 SKU 规格指纹',
  upstream_created TINYINT(1) NULL COMMENT '上游本次是否新建编码',
  operator_user_id VARCHAR(120) NULL COMMENT '编码操作人用户 ID',
  operator_name VARCHAR(120) NULL COMMENT '编码操作人',
  operator_department VARCHAR(120) NULL COMMENT '编码操作人部门',
  attempt_count INT NOT NULL DEFAULT 1 COMMENT '提交尝试次数',
  started_at DATETIME NULL COMMENT '最近一次提交开始时间',
  encoded_at DATETIME NULL COMMENT '编码成功时间',
  last_error VARCHAR(1000) NULL COMMENT '最近一次失败原因',
  created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
  updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
  UNIQUE KEY uk_alibaba_1688_encoding_product (product_id),
  KEY idx_alibaba_1688_encoding_status (status, updated_at)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='1688 商品一次性编码登记';