feat: 支持无SKU目录导入策略 (#141)

admin/repository/sqlite_to_mysql.go

@@ -5,11 +5,14 @@ import (
 	"crypto/sha256"
 	"database/sql"
 	"encoding/binary"
+	"encoding/json"
 	"fmt"
 	"path/filepath"
 	"sort"
 	"strings"
 	"time"
+
+	"cmautobuy/admin/spec"
 )
 
 // SQLiteMigrationSummary 只包含表名和数量，可以安全写入终端或工单。
@@ -117,6 +120,9 @@ func MigrateSQLiteToMySQL(source, target *sql.DB, dryRun bool) (*SQLiteMigration
 			return nil, err
 		}
 	}
+	if err := normalizeMigratedShopeeSKUs(tx); err != nil {
+		return nil, err
+	}
 	if err := tx.Commit(); err != nil {
 		return nil, &SQLiteMigrationError{Stage: "无法提交 MySQL 导入事务", Cause: err}
 	}
@@ -126,6 +132,52 @@ func MigrateSQLiteToMySQL(source, target *sql.DB, dryRun bool) (*SQLiteMigration
 	return summary, nil
 }
 
+// normalizeMigratedShopeeSKUs 补齐 MySQL v8 新增、历史 SQLite 没有的规格身份列。
+func normalizeMigratedShopeeSKUs(tx *sql.Tx) error {
+	rows, err := tx.Query(`SELECT sku_id,spec_raw,color,size,advice,sku_code,updated_at FROM shopee_skus`)
+	if err != nil {
+		return &SQLiteMigrationError{Stage: "无法读取待转换 SKU", Table: "shopee_skus", Cause: err}
+	}
+	type item struct {
+		id, raw, updated          string
+		color, size, advice, code sql.NullString
+	}
+	var list []item
+	for rows.Next() {
+		var row item
+		if err := rows.Scan(&row.id, &row.raw, &row.color, &row.size, &row.advice, &row.code, &row.updated); err != nil {
+			rows.Close()
+			return err
+		}
+		list = append(list, row)
+	}
+	if err := rows.Close(); err != nil {
+		return err
+	}
+	for _, row := range list {
+		key, err := spec.SpecKey(row.raw)
+		if err != nil {
+			return &SQLiteMigrationError{Stage: "历史 SKU 规格原文无效", Table: "shopee_skus", Cause: err}
+		}
+		if len([]rune(key)) > 191 {
+			return &SQLiteMigrationError{Stage: "历史 SKU 规格键过长", Table: "shopee_skus"}
+		}
+		sources, times := map[string]string{}, map[string]string{}
+		for name, value := range map[string]string{"color": row.color.String, "size": row.size.String, "advice": row.advice.String, "sku_code": row.code.String} {
+			if value != "" {
+				sources[name] = "report"
+				times[name] = row.updated
+			}
+		}
+		sourcesJSON, _ := json.Marshal(sources)
+		timesJSON, _ := json.Marshal(times)
+		if _, err := tx.Exec(`UPDATE shopee_skus SET shopee_sku_id=sku_id,spec_key=?,source='report',field_sources=?,field_observed_at=? WHERE sku_id=?`, key, string(sourcesJSON), string(timesJSON), row.id); err != nil {
+			return &SQLiteMigrationError{Stage: "无法补齐 MySQL v8 SKU 身份", Table: "shopee_skus", Cause: err}
+		}
+	}
+	return nil
+}
+
 // VerifySQLiteToMySQL 比较逐表数量和全部迁移列的确定性摘要，不输出业务内容。
 func VerifySQLiteToMySQL(source, target *sql.DB) (*SQLiteMigrationSummary, error) {
 	if err := validateLegacySQLite(source); err != nil {