freefire
809d8f1df7
支持开关与 0–100 行阈值（0 为无预览），经站点设置与 WS 热更新；短代码在视口内收起时不再回滚浏览位置。 Co-authored-by: Cursor <cursoragent@cursor.com>
321 lines
9.0 KiB
Go
321 lines
9.0 KiB
Go
package service
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import (
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"errors"
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"regexp"
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"strconv"
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"strings"
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"unicode/utf8"
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"github.com/freefire/jiang13-bbs/model"
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"gorm.io/gorm"
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)
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// 站点设置键
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const (
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// SettingKeyAccent 站点主题色（浅色基准，#rrggbb）；为空表示使用内置默认色
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SettingKeyAccent = "theme_accent"
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// SettingKeyTrustReviewedPublish 已过审用户后续发帖/评论免审；缺行视为开启（默认开）
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SettingKeyTrustReviewedPublish = "trust_reviewed_publish"
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SettingKeySiteName = "site_name"
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SettingKeySiteDescription = "site_description"
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SettingKeyAllowRegister = "allow_register"
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SettingKeyPostCooldownHours = "post_cooldown_hours"
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// SettingKeyCodeBlockAutoFold 代码块自动折叠；缺行视为开启
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SettingKeyCodeBlockAutoFold = "code_block_auto_fold"
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// SettingKeyCodeBlockFoldLines 超过该行数则折叠；0=无预览；缺行=5
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SettingKeyCodeBlockFoldLines = "code_block_fold_lines"
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)
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const (
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DefaultSiteName = "姜十三论坛"
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DefaultSiteDescription = "姜十三论坛 - 技术分享与讨论社区"
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DefaultCooldownHours = 24
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DefaultCodeFoldLines = 5
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MaxSiteNameRunes = 32
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MaxSiteDescRunes = 160
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MaxCooldownHours = 168
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MinCodeFoldLines = 0
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MaxCodeFoldLines = 100
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)
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// ErrInvalidAccent 主题色格式非法
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var ErrInvalidAccent = errors.New("主题色格式不正确，应为 #RRGGBB")
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// ErrInvalidSiteSetting 站点设置字段校验失败
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var ErrInvalidSiteSetting = errors.New("站点设置参数无效")
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var accentHexRe = regexp.MustCompile(`^#[0-9a-fA-F]{6}$`)
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// PublicSiteSettings 对前台公开的站点配置（SEO / 注册入口 / 发帖冷静期提示）
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type PublicSiteSettings struct {
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Accent string `json:"accent"`
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TrustReviewedPublish bool `json:"trust_reviewed_publish"`
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SiteName string `json:"site_name"`
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SiteDescription string `json:"site_description"`
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AllowRegister bool `json:"allow_register"`
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PostCooldownHours int `json:"post_cooldown_hours"`
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CodeBlockAutoFold bool `json:"code_block_auto_fold"`
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CodeBlockFoldLines int `json:"code_block_fold_lines"`
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}
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// SettingService 站点级键值设置
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type SettingService struct {
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db *gorm.DB
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}
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func NewSettingService(db *gorm.DB) *SettingService {
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return &SettingService{db: db}
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}
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func (s *SettingService) getValue(key string) (string, bool, error) {
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var st model.SiteSetting
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err := s.db.Where("key = ?", key).First(&st).Error
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return "", false, nil
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}
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if err != nil {
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return "", false, err
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}
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return st.Value, true, nil
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}
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func (s *SettingService) putValue(key, value string) error {
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st := model.SiteSetting{Key: key, Value: value}
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return s.db.Save(&st).Error
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}
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func (s *SettingService) deleteKey(key string) error {
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return s.db.Where("key = ?", key).Delete(&model.SiteSetting{}).Error
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}
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// 缺行或空值视为 on；仅显式 false/0/off/no 为关。不用 GORM bool default:true，避免零值省略。
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func parseBoolDefaultTrue(v string, found bool) bool {
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if !found {
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return true
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}
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switch strings.TrimSpace(strings.ToLower(v)) {
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case "false", "0", "off", "no":
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return false
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default:
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return true
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}
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}
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func (s *SettingService) setBoolDefaultTrue(key string, on bool) error {
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if on {
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return s.deleteKey(key)
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}
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return s.putValue(key, "false")
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}
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// Public 返回解析后的公开站点设置（缺省已填默认值）
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func (s *SettingService) Public() (PublicSiteSettings, error) {
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out := PublicSiteSettings{
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SiteName: DefaultSiteName,
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SiteDescription: DefaultSiteDescription,
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TrustReviewedPublish: true,
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AllowRegister: true,
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PostCooldownHours: DefaultCooldownHours,
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CodeBlockAutoFold: true,
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CodeBlockFoldLines: DefaultCodeFoldLines,
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}
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accent, err := s.AccentColor()
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if err != nil {
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return out, err
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}
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out.Accent = accent
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trust, err := s.TrustReviewedPublish()
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if err != nil {
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return out, err
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}
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out.TrustReviewedPublish = trust
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name, found, err := s.getValue(SettingKeySiteName)
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if err != nil {
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return out, err
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}
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if found {
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name = strings.TrimSpace(name)
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if name != "" {
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out.SiteName = name
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}
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}
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desc, found, err := s.getValue(SettingKeySiteDescription)
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if err != nil {
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return out, err
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}
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if found {
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out.SiteDescription = strings.TrimSpace(desc)
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}
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reg, found, err := s.getValue(SettingKeyAllowRegister)
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if err != nil {
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return out, err
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}
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out.AllowRegister = parseBoolDefaultTrue(reg, found)
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hours, err := s.PostCooldownHours()
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if err != nil {
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return out, err
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}
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out.PostCooldownHours = hours
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fold, err := s.CodeBlockAutoFold()
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if err != nil {
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return out, err
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}
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out.CodeBlockAutoFold = fold
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foldLines, err := s.CodeBlockFoldLines()
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if err != nil {
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return out, err
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}
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out.CodeBlockFoldLines = foldLines
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return out, nil
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}
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// AccentColor 返回配置的主题色（小写 #rrggbb）；未配置时返回空串，表示走前端默认色
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func (s *SettingService) AccentColor() (string, error) {
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v, found, err := s.getValue(SettingKeyAccent)
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if err != nil || !found {
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return "", err
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}
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return strings.ToLower(v), nil
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}
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// SetAccent 校验并保存主题色；hex 传空串表示恢复默认（删除该键）
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func (s *SettingService) SetAccent(hex string) error {
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hex = strings.TrimSpace(strings.ToLower(hex))
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if hex == "" {
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return s.deleteKey(SettingKeyAccent)
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}
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if !accentHexRe.MatchString(hex) {
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return ErrInvalidAccent
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}
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return s.putValue(SettingKeyAccent, hex)
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}
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// TrustReviewedPublish 是否对「已有过审内容」的用户免审。
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func (s *SettingService) TrustReviewedPublish() (bool, error) {
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v, found, err := s.getValue(SettingKeyTrustReviewedPublish)
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if err != nil {
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return true, err
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}
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return parseBoolDefaultTrue(v, found), nil
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}
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// SetTrustReviewedPublish 持久化免审开关；开启时删除键以保持「缺行=默认开」语义
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func (s *SettingService) SetTrustReviewedPublish(on bool) error {
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return s.setBoolDefaultTrue(SettingKeyTrustReviewedPublish, on)
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}
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func (s *SettingService) SetSiteName(name string) error {
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name = strings.TrimSpace(name)
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if name == "" || name == DefaultSiteName {
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return s.deleteKey(SettingKeySiteName)
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}
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if utf8.RuneCountInString(name) > MaxSiteNameRunes {
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return ErrInvalidSiteSetting
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}
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return s.putValue(SettingKeySiteName, name)
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}
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func (s *SettingService) SetSiteDescription(desc string) error {
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desc = strings.TrimSpace(desc)
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if utf8.RuneCountInString(desc) > MaxSiteDescRunes {
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return ErrInvalidSiteSetting
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}
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if desc == "" || desc == DefaultSiteDescription {
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return s.deleteKey(SettingKeySiteDescription)
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}
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return s.putValue(SettingKeySiteDescription, desc)
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}
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func (s *SettingService) AllowRegister() (bool, error) {
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v, found, err := s.getValue(SettingKeyAllowRegister)
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if err != nil {
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return true, err
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}
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return parseBoolDefaultTrue(v, found), nil
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}
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func (s *SettingService) SetAllowRegister(on bool) error {
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return s.setBoolDefaultTrue(SettingKeyAllowRegister, on)
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}
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// PostCooldownHours 新用户发帖冷静期（小时）。缺行=24；0 表示关闭。
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func (s *SettingService) PostCooldownHours() (int, error) {
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v, found, err := s.getValue(SettingKeyPostCooldownHours)
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if err != nil {
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return DefaultCooldownHours, err
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}
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if !found {
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return DefaultCooldownHours, nil
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}
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n, convErr := strconv.Atoi(strings.TrimSpace(v))
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if convErr != nil || n < 0 {
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return DefaultCooldownHours, nil
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}
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if n > MaxCooldownHours {
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return MaxCooldownHours, nil
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}
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return n, nil
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}
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func (s *SettingService) SetPostCooldownHours(hours int) error {
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if hours < 0 || hours > MaxCooldownHours {
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return ErrInvalidSiteSetting
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}
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if hours == DefaultCooldownHours {
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return s.deleteKey(SettingKeyPostCooldownHours)
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}
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return s.putValue(SettingKeyPostCooldownHours, strconv.Itoa(hours))
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}
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// CodeBlockAutoFold 是否对超过阈值行数的 Markdown 代码块默认折叠。缺行视为开启。
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func (s *SettingService) CodeBlockAutoFold() (bool, error) {
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v, found, err := s.getValue(SettingKeyCodeBlockAutoFold)
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if err != nil {
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return true, err
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}
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return parseBoolDefaultTrue(v, found), nil
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}
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// SetCodeBlockAutoFold 持久化代码折叠开关；开启时删键保持「缺行=默认开」。
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func (s *SettingService) SetCodeBlockAutoFold(on bool) error {
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return s.setBoolDefaultTrue(SettingKeyCodeBlockAutoFold, on)
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}
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// CodeBlockFoldLines 超过该行数则折叠（折叠预览约同高；0=无预览）。缺行=5。
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func (s *SettingService) CodeBlockFoldLines() (int, error) {
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v, found, err := s.getValue(SettingKeyCodeBlockFoldLines)
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if err != nil {
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return DefaultCodeFoldLines, err
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}
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if !found {
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return DefaultCodeFoldLines, nil
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}
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n, convErr := strconv.Atoi(strings.TrimSpace(v))
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if convErr != nil || n < MinCodeFoldLines {
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return DefaultCodeFoldLines, nil
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}
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if n > MaxCodeFoldLines {
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return MaxCodeFoldLines, nil
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}
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return n, nil
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}
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func (s *SettingService) SetCodeBlockFoldLines(lines int) error {
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if lines < MinCodeFoldLines || lines > MaxCodeFoldLines {
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return ErrInvalidSiteSetting
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}
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if lines == DefaultCodeFoldLines {
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return s.deleteKey(SettingKeyCodeBlockFoldLines)
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}
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return s.putValue(SettingKeyCodeBlockFoldLines, strconv.Itoa(lines))
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}
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