87 lines
3.1 KiB
Go
87 lines
3.1 KiB
Go
package repository
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import (
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"database/sql"
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"fmt"
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"strings"
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)
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// PDDPriceBackfillTarget 是一次性 Excel 价格回填需要的 PDD 原值。
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// 原值同时用于 dry-run、乐观锁和本机回退备份。
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type PDDPriceBackfillTarget struct {
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GoodsID string
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SKUsJSON string
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CollectStatus string
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CollectMsg *string
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ArtifactRef *string
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CollectedAt *string
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UpdatedAt string
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}
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// ListShopPDDPriceBackfillTargets 读取指定蝦皮店铺当前关联的活动 PDD 商品。
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// 同一个 PDD 被多个蝦皮商品关联时只返回一份原值。
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func ListShopPDDPriceBackfillTargets(q Execer, shopName string) ([]PDDPriceBackfillTarget, error) {
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rows, err := q.Query(`
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SELECT DISTINCT pp.goods_id, COALESCE(pp.skus_json, ''), pp.collect_status,
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pp.collect_msg, pp.artifact_ref, pp.collected_at, pp.updated_at
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FROM shopee_products sp
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JOIN pdd_products pp ON pp.goods_id = sp.pdd_goods_id
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WHERE sp.deleted_at IS NULL AND pp.deleted_at IS NULL
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AND sp.shopee_shop_name = ?
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ORDER BY pp.goods_id`, strings.TrimSpace(shopName))
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if err != nil {
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return nil, fmt.Errorf("读取店铺 PDD 价格回填目标失败: %w", err)
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}
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defer rows.Close()
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var targets []PDDPriceBackfillTarget
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for rows.Next() {
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var target PDDPriceBackfillTarget
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var collectMsg, artifactRef, collectedAt sql.NullString
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if err := rows.Scan(&target.GoodsID, &target.SKUsJSON, &target.CollectStatus,
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&collectMsg, &artifactRef, &collectedAt, &target.UpdatedAt); err != nil {
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return nil, fmt.Errorf("解析 PDD 价格回填目标失败: %w", err)
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}
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target.CollectMsg = nullableStringPointer(collectMsg)
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target.ArtifactRef = nullableStringPointer(artifactRef)
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target.CollectedAt = nullableStringPointer(collectedAt)
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targets = append(targets, target)
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}
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if err := rows.Err(); err != nil {
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return nil, fmt.Errorf("遍历 PDD 价格回填目标失败: %w", err)
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}
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return targets, nil
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}
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func nullableStringPointer(value sql.NullString) *string {
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if !value.Valid {
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return nil
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}
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result := value.String
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return &result
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}
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// ReplacePDDPricesAndMarkCollected 使用完整原值作乐观锁，写入价格并标记已采集。
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// 返回 false 表示 dry-run 后目标发生变化，调用方必须回滚整批，不能部分提交。
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func ReplacePDDPricesAndMarkCollected(q Execer, target PDDPriceBackfillTarget,
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newSKUsJSON, collectedAt, updatedAt string) (bool, error) {
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result, err := q.Exec(`
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UPDATE pdd_products
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SET skus_json = ?, collect_status = 'collected',
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collect_msg = NULL, artifact_ref = NULL,
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collected_at = ?, updated_at = ?
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WHERE goods_id = ? AND deleted_at IS NULL
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AND COALESCE(skus_json, '') = ?
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AND collect_status = ? AND updated_at = ?`,
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newSKUsJSON, collectedAt, updatedAt, target.GoodsID,
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target.SKUsJSON, target.CollectStatus, target.UpdatedAt)
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if err != nil {
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return false, fmt.Errorf("更新 PDD 商品 %s 的正式价格失败: %w", target.GoodsID, err)
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}
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rows, err := result.RowsAffected()
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if err != nil {
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return false, fmt.Errorf("读取 PDD 商品 %s 的价格回填结果失败: %w", target.GoodsID, err)
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}
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return rows == 1, nil
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}
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