增加违禁词管理 增加多选操作

backend/internal/repo/banned_word_repo.go

@@ -0,0 +1,59 @@
+package repo
+
+import (
+	"context"
+	"errors"
+	"strings"
+	"time"
+
+	"backend/internal/model"
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+type BannedWordRepository struct {
+	db *gorm.DB
+}
+
+func NewBannedWordRepository(db *gorm.DB) *BannedWordRepository {
+	return &BannedWordRepository{db: db}
+}
+
+func (r *BannedWordRepository) List(ctx context.Context) ([]model.BannedWord, error) {
+	var items []model.BannedWord
+	err := r.db.WithContext(ctx).Order("hits DESC, created_at DESC").Find(&items).Error
+	return items, err
+}
+
+func (r *BannedWordRepository) Create(ctx context.Context, word string) (*model.BannedWord, error) {
+	word = strings.TrimSpace(word)
+	if word == "" {
+		return nil, errors.New("违禁词不能为空")
+	}
+	item := &model.BannedWord{
+		ID:        strings.ReplaceAll(uuid.NewString(), "-", "")[:32],
+		Word:      word,
+		CreatedAt: time.Now(),
+		UpdatedAt: time.Now(),
+	}
+	if err := r.db.WithContext(ctx).Create(item).Error; err != nil {
+		return nil, errors.New("添加失败(可能已存在)")
+	}
+	return item, nil
+}
+
+func (r *BannedWordRepository) Delete(ctx context.Context, id string) (int64, error) {
+	res := r.db.WithContext(ctx).Delete(&model.BannedWord{}, "id = ?", id)
+	return res.RowsAffected, res.Error
+}
+
+// RecordHit bumps the word's block counter and, when userID is set, the user's
+// 违禁词触发次数 shown on the admin users table. Best-effort bookkeeping.
+func (r *BannedWordRepository) RecordHit(ctx context.Context, wordID, userID string) {
+	_ = r.db.WithContext(ctx).Model(&model.BannedWord{}).Where("id = ?", wordID).
+		UpdateColumn("hits", gorm.Expr("hits + 1")).Error
+	if userID != "" {
+		_ = r.db.WithContext(ctx).Model(&model.User{}).Where("id = ?", userID).
+			UpdateColumn("banned_word_hits", gorm.Expr("banned_word_hits + 1")).Error
+	}
+}