prompt 7

internal/repo/user_repo.go

@@ -2,6 +2,8 @@ package repo
 
 import (
 	"errors"
+	"fmt"
+	"strings"
 
 	"trustcontact/internal/models"
 
@@ -12,6 +14,14 @@ type UserRepo struct {
 	db *gorm.DB
 }
 
+type UserListParams struct {
+	Query    string
+	Sort     string
+	Dir      string
+	Page     int
+	PageSize int
+}
+
 func NewUserRepo(db *gorm.DB) *UserRepo {
 	return &UserRepo{db: db}
 }
@@ -55,3 +65,65 @@ func (r *UserRepo) UpdatePasswordHash(userID uint, passwordHash string) error {
 		Where("id = ?", userID).
 		Update("password_hash", passwordHash).Error
 }
+
+func (r *UserRepo) List(params UserListParams) ([]models.User, int64, error) {
+	query := r.db.Model(&models.User{})
+
+	search := strings.TrimSpace(params.Query)
+	if search != "" {
+		like := "%" + strings.ToLower(search) + "%"
+		query = query.Where("LOWER(name) LIKE ? OR LOWER(email) LIKE ?", like, like)
+	}
+
+	var total int64
+	if err := query.Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	orderBy := sanitizeSort(params.Sort)
+	orderDir := sanitizeDir(params.Dir)
+	orderClause := fmt.Sprintf("%s %s", orderBy, orderDir)
+
+	page := params.Page
+	if page < 1 {
+		page = 1
+	}
+	pageSize := params.PageSize
+	if pageSize <= 0 {
+		pageSize = 10
+	}
+	if pageSize > 100 {
+		pageSize = 100
+	}
+
+	offset := (page - 1) * pageSize
+
+	var users []models.User
+	if err := query.Order(orderClause).Limit(pageSize).Offset(offset).Find(&users).Error; err != nil {
+		return nil, 0, err
+	}
+
+	return users, total, nil
+}
+
+func sanitizeSort(sort string) string {
+	switch strings.ToLower(strings.TrimSpace(sort)) {
+	case "id":
+		return "id"
+	case "name":
+		return "name"
+	case "email":
+		return "email"
+	default:
+		return "id"
+	}
+}
+
+func sanitizeDir(dir string) string {
+	switch strings.ToLower(strings.TrimSpace(dir)) {
+	case "desc":
+		return "desc"
+	default:
+		return "asc"
+	}
+}