初始提交：姜十三论坛 Jiang13 Forum

轻量自用论坛，Go 单二进制 + React SPA 内嵌 + SQLite。 Co-authored-by: Cursor <cursoragent@cursor.com>
2026-06-15 21:08:52 +08:00
commit e1c1708715
140 changed files with 16115 additions and 0 deletions
--- a/service/user.go
+++ b/service/user.go
@@ -0,0 +1,126 @@
+package service
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"mime/multipart"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"github.com/jiang13/forum/model"
+)
+
+type UserService struct {
+	filter *SensitiveFilter
+}
+
+func NewUserService(filter *SensitiveFilter) *UserService {
+	return &UserService{filter: filter}
+}
+
+// GetByID 获取用户信息
+func (s *UserService) GetByID(id uint) (*model.User, error) {
+	var user model.User
+	if err := model.DB.First(&user, id).Error; err != nil {
+		return nil, err
+	}
+	return &user, nil
+}
+
+// GetByUsername 按用户名查询
+func (s *UserService) GetByUsername(username string) (*model.User, error) {
+	var user model.User
+	if err := model.DB.Where("username = ?", username).First(&user).Error; err != nil {
+		return nil, err
+	}
+	return &user, nil
+}
+
+// UpdateNickname 修改昵称
+func (s *UserService) UpdateNickname(userID uint, nickname string) error {
+	nickname = strings.TrimSpace(nickname)
+	if nickname == "" {
+		return errors.New("昵称不能为空")
+	}
+	nickname = s.filter.Filter(nickname)
+	return model.DB.Model(&model.User{}).Where("id = ?", userID).Update("nickname", nickname).Error
+}
+
+// UpdatePassword 修改密码
+func (s *UserService) UpdatePassword(userID uint, oldPass, newPass string) error {
+	if err := ValidatePassword(newPass); err != nil {
+		return err
+	}
+	var user model.User
+	if err := model.DB.First(&user, userID).Error; err != nil {
+		return err
+	}
+	if !CheckPassword(user.Password, oldPass) {
+		return errors.New("原密码错误")
+	}
+	hash, err := HashPassword(newPass)
+	if err != nil {
+		return err
+	}
+	return model.DB.Model(&user).Update("password", hash).Error
+}
+
+// UploadAvatar 上传头像到本地目录
+func (s *UserService) UploadAvatar(userID uint, file *multipart.FileHeader, uploadDir string) (string, error) {
+	ext := strings.ToLower(filepath.Ext(file.Filename))
+	allowed := map[string]bool{".jpg": true, ".jpeg": true, ".png": true, ".gif": true, ".webp": true}
+	if !allowed[ext] {
+		return "", errors.New("仅支持 jpg/png/gif/webp 格式")
+	}
+	filename := fmt.Sprintf("%d%s", userID, ext)
+	destPath := filepath.Join(uploadDir, filename)
+
+	src, err := file.Open()
+	if err != nil {
+		return "", err
+	}
+	defer src.Close()
+
+	dst, err := os.Create(destPath)
+	if err != nil {
+		return "", err
+	}
+	defer dst.Close()
+
+	if _, err := io.Copy(dst, src); err != nil {
+		return "", err
+	}
+
+	avatarURL := "/uploads/avatars/" + filename
+	return avatarURL, model.DB.Model(&model.User{}).Where("id = ?", userID).Update("avatar", avatarURL).Error
+}
+
+// ListUsers 管理员列出用户
+func (s *UserService) ListUsers(page, size int) ([]model.User, int64, error) {
+	var users []model.User
+	var total int64
+	model.DB.Model(&model.User{}).Count(&total)
+	offset := (page - 1) * size
+	err := model.DB.Order("id desc").Offset(offset).Limit(size).Find(&users).Error
+	return users, total, err
+}
+
+// BanUser 禁言用户
+func (s *UserService) BanUser(userID uint, banned bool) error {
+	var user model.User
+	if err := model.DB.First(&user, userID).Error; err != nil {
+		return errors.New("用户不存在")
+	}
+	if user.Role == model.RoleAdmin {
+		return errors.New("不能禁言管理员账号")
+	}
+	now := time.Now()
+	updates := map[string]interface{}{"banned": banned}
+	if banned {
+		updates["banned_at"] = &now
+	}
+	return model.DB.Model(&model.User{}).Where("id = ?", userID).Updates(updates).Error
+}