fix: close platform admin final audit findings

backend/api/internal/logic/platform/platform.go

@@ -3,6 +3,8 @@ package platform
 
 import (
 	"errors"
+	"reflect"
+	"strings"
 
 	"git.apinb.com/bsm-sdk/core/errcode"
 	"git.apinb.com/bsm-sdk/core/infra"
@@ -38,7 +40,8 @@ func listPage[T any](ctx *gin.Context) {
 	page, size := pageSize(ctx)
 	var list []T
 	var total int64
-	databaseQuery := impl.DBService.Model(new(T))
+	model := new(T)
+	databaseQuery := applyKeywordFilter(ctx, impl.DBService.Model(model), model)
 	if err := databaseQuery.Count(&total).Error; err != nil {
 		infra.Response.Error(ctx, err)
 		return
@@ -55,6 +58,58 @@ func listPage[T any](ctx *gin.Context) {
 	infra.Response.Success(ctx, gin.H{"total": total, "list": response})
 }
 
+var keywordExcludedColumns = map[string]bool{
+	"identity": true, "status": true, "password_hash": true,
+	"longitude": true, "latitude": true, "payload": true,
+	"before_data": true, "after_data": true,
+}
+
+func applyKeywordFilter(ctx *gin.Context, query *gorm.DB, model any) *gorm.DB {
+	keyword := strings.ToLower(strings.TrimSpace(ctx.Query("keyword")))
+	if keyword == "" {
+		return query
+	}
+	columns := keywordColumns(model)
+	if len(columns) == 0 {
+		return query
+	}
+	conditions := make([]string, 0, len(columns))
+	arguments := make([]any, 0, len(columns))
+	for _, column := range columns {
+		conditions = append(conditions, `LOWER("`+column+`") LIKE ?`)
+		arguments = append(arguments, "%"+keyword+"%")
+	}
+	return query.Where("("+strings.Join(conditions, " OR ")+")", arguments...)
+}
+
+func keywordColumns(model any) []string {
+	modelType := reflect.TypeOf(model)
+	for modelType.Kind() == reflect.Pointer {
+		modelType = modelType.Elem()
+	}
+	columns := make([]string, 0)
+	for index := 0; index < modelType.NumField(); index++ {
+		field := modelType.Field(index)
+		if field.Anonymous || field.Type.Kind() != reflect.String {
+			continue
+		}
+		column := gormColumn(field.Tag.Get("gorm"))
+		if column != "" && !keywordExcludedColumns[column] {
+			columns = append(columns, column)
+		}
+	}
+	return columns
+}
+
+func gormColumn(tag string) string {
+	for _, part := range strings.Split(tag, ";") {
+		if strings.HasPrefix(part, "column:") {
+			return strings.TrimPrefix(part, "column:")
+		}
+	}
+	return ""
+}
+
 func getByIdentity[T any](ctx *gin.Context) {
 	var data T
 	if err := impl.DBService.Where("identity = ?", ctx.Param("identity")).First(&data).Error; err != nil {