update

scripts/i18n/main.go

@@ -0,0 +1,106 @@
+// Command i18n_migrate 落地方案 A 的 i18n 列（加列 + 回填）。
+//
+// 项目已移除 AutoMigrate，表结构由外部 SQL 托管（见 scripts/sql/002_i18n_columns.sql，
+// 那是给人 review 的规范底稿）。本程序是「没有 mysql 客户端时」的执行器：
+//   - ALTER 走 ensureColumn：先查 information_schema，缺才加，可安全重跑（幂等）。
+//   - 回填 UPDATE 内联且幂等，重跑无害。
+//
+// 不写任何业务逻辑。
+package main
+
+import (
+	"fmt"
+	"log"
+
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+)
+
+const dsn = "root:root@tcp(127.0.0.1:3306)/db?charset=utf8mb4&parseTime=True&loc=Local"
+const han = "[一-鿿]"
+
+func main() {
+	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
+	if err != nil {
+		log.Fatal("open:", err)
+	}
+
+	// 1) 幂等加列（与 002_i18n_columns.sql 对齐）
+	ensureColumn(db, "brand", "name_en", "VARCHAR(255) NOT NULL DEFAULT '' AFTER name")
+	ensureColumn(db, "brand", "name_cn", "VARCHAR(255) NOT NULL DEFAULT '' AFTER name_en")
+	ensureColumn(db, "brand_runway", "title_en", "VARCHAR(255) NOT NULL DEFAULT '' AFTER title")
+	ensureColumn(db, "brand_runway", "title_cn", "VARCHAR(255) NOT NULL DEFAULT '' AFTER title_en")
+	ensureColumn(db, "brand_runway", "description_en", "VARCHAR(1024) NOT NULL DEFAULT '' AFTER description")
+	ensureColumn(db, "brand_runway", "description_cn", "VARCHAR(1024) NOT NULL DEFAULT '' AFTER description_en")
+
+	// 2) 回填品牌名：从 name / show_name 拆拉丁与中文（幂等）
+	db.Exec(fmt.Sprintf(`
+		UPDATE brand SET
+		  name_en = CASE
+		    WHEN TRIM(REGEXP_REPLACE(name, '%s', '')) <> '' THEN TRIM(REGEXP_REPLACE(name, '%s', ''))
+		    WHEN show_name LIKE '%%/%%' THEN TRIM(SUBSTRING_INDEX(show_name, '/', 1))
+		    ELSE ''
+		  END,
+		  name_cn = CASE
+		    WHEN show_name LIKE '%%/%%' AND SUBSTRING_INDEX(show_name, '/', -1) REGEXP '%s'
+		      THEN TRIM(SUBSTRING_INDEX(show_name, '/', -1))
+		    WHEN show_name REGEXP '%s' THEN TRIM(show_name)
+		    WHEN name REGEXP '%s' THEN TRIM(name)
+		    ELSE ''
+		  END`, han, han, han, han, han))
+
+	// 3) 回填走秀：title / description 当前全英文，直接进 *_en（幂等）
+	db.Exec(`UPDATE brand_runway SET title_en = title, description_en = description, title_cn = '', description_cn = ''`)
+
+	// 4) 校验
+	printCounts(db)
+	fmt.Println("migration done.")
+}
+
+func ensureColumn(db *gorm.DB, table, col, def string) {
+	var n int64
+	db.Raw("SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA='db' AND TABLE_NAME=? AND COLUMN_NAME=?", table, col).Scan(&n)
+	if n > 0 {
+		fmt.Printf("  skip %s.%s (exists)\n", table, col)
+		return
+	}
+	stmt := fmt.Sprintf("ALTER TABLE %s ADD COLUMN %s %s", table, col, def)
+	fmt.Println("  +", stmt)
+	if r := db.Exec(stmt); r.Error != nil {
+		log.Fatalf("alter %s.%s failed: %v", table, col, r.Error)
+	}
+}
+
+func printCounts(db *gorm.DB) {
+	type c struct {
+		Tot, En, Cn, Both, Dcn int64
+	}
+	var b c
+	db.Raw(`SELECT COUNT(*) tot,
+		SUM(CASE WHEN name_en<>'' THEN 1 ELSE 0 END) en,
+		SUM(CASE WHEN name_cn<>'' THEN 1 ELSE 0 END) cn,
+		SUM(CASE WHEN name_en<>'' AND name_cn<>'' THEN 1 ELSE 0 END) both_cnt
+		FROM brand`).Scan(&b)
+	fmt.Printf("  brand: total=%d name_en=%d name_cn=%d both=%d\n", b.Tot, b.En, b.Cn, b.Both)
+
+	var r c
+	db.Raw(`SELECT COUNT(*) tot,
+		SUM(CASE WHEN title_en<>'' THEN 1 ELSE 0 END) en,
+		SUM(CASE WHEN title_cn<>'' THEN 1 ELSE 0 END) cn,
+		SUM(CASE WHEN description_cn<>'' THEN 1 ELSE 0 END) dcn
+		FROM brand_runway WHERE is_deleted=0`).Scan(&r)
+	fmt.Printf("  runway: total=%d title_en=%d title_cn=%d desc_cn=%d\n", r.Tot, r.En, r.Cn, r.Dcn)
+
+	type s struct {
+		Name     string
+		ShowName string
+		NameEn   string
+		NameCn   string
+	}
+	var samples []s
+	db.Raw("SELECT name, show_name, name_en, name_cn FROM brand WHERE name REGEXP ? OR show_name REGEXP ? ORDER BY id LIMIT 8", han, han).Scan(&samples)
+	fmt.Println("  brand samples:")
+	for _, x := range samples {
+		fmt.Printf("    name=%-18q show=%-26q -> en=%-18q cn=%-18q\n", x.Name, x.ShowName, x.NameEn, x.NameCn)
+	}
+}