package repository

import "fmt"

// ReplaceBackfilledPDDAvailability 只替换规格 JSON 和更新时间。
// collect_status、价格、关联及采集时间由新 JSON 和原行乐观锁共同保护，不在此处改写。
func ReplaceBackfilledPDDAvailability(q Execer, target PDDPriceBackfillTarget,
	newSKUsJSON, updatedAt string) (bool, error) {
	result, err := q.Exec(`
		UPDATE pdd_products
		   SET skus_json = ?, updated_at = ?
		 WHERE goods_id = ? AND deleted_at IS NULL
		   AND COALESCE(skus_json, '') = ?
		   AND collect_status = ? AND updated_at = ?`,
		newSKUsJSON, updatedAt, target.GoodsID,
		target.SKUsJSON, target.CollectStatus, target.UpdatedAt)
	if err != nil {
		return false, fmt.Errorf("确认 PDD 商品 %s 的可售状态失败: %w", target.GoodsID, err)
	}
	rows, err := result.RowsAffected()
	if err != nil {
		return false, fmt.Errorf("读取 PDD 商品 %s 的可售确认结果失败: %w", target.GoodsID, err)
	}
	return rows == 1, nil
}