kevinandClaude Fable 5
e3367e6e12
Add four DB-backed configuration tables for site-wide settings: site_settings (logo, top-left title, header/footer text with zh/en variants), upload_configs (master switch, default size, storage dir), upload_file_types (per-extension whitelist with per-type size limits), and download_baseurls (multiple download sources with priority/default). - Models, AutoMigrate, and first-run seed (18 common file types) - Process-level config cache warmed at startup, refreshed on admin save - SetUserContext injects cached site settings into templates - base.html renders logo (local upload or external URL), title, header banner, and footer with i18n fallback - Upload validator drives avatar uploads (form + AJAX) through the configured switch/type/size policy - Admin pages for site/upload/download settings with i18n keys Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
106 lines
3.0 KiB
Go
106 lines
3.0 KiB
Go
package models
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import (
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"sync"
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"gorm.io/gorm"
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)
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// configCache holds process-level caches of platform configuration so that
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// per-request rendering and upload validation do not hit the database. The
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// cache is populated once at startup and refreshed whenever an admin saves a
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// settings page (see RefreshConfigCache / the admin handlers).
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var configCache = struct {
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mu sync.RWMutex
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site *SiteSetting
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upload *UploadConfig
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types []UploadFileType
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baseURLs []DownloadBaseURL
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}{
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site: &SiteSetting{},
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upload: &UploadConfig{Enabled: true, DefaultMaxSize: DefaultUploadMaxSize, StorageDir: "attachments"},
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}
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// LoadConfigCache reads all platform configuration from the database into the
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// process cache. Called once at startup after InitDB.
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func LoadConfigCache(db *gorm.DB) {
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configCache.mu.Lock()
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defer configCache.mu.Unlock()
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var s SiteSetting
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if err := db.First(&s, 1).Error; err == nil {
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configCache.site = &s
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} else {
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configCache.site = &SiteSetting{ID: 1}
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}
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var u UploadConfig
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if err := db.First(&u, 1).Error; err == nil {
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configCache.upload = &u
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} else {
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configCache.upload = &UploadConfig{ID: 1, Enabled: true, DefaultMaxSize: DefaultUploadMaxSize, StorageDir: "attachments"}
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}
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var t []UploadFileType
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if err := db.Order("sort asc, id asc").Find(&t).Error; err == nil {
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configCache.types = t
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}
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var b []DownloadBaseURL
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if err := db.Order("is_default desc, priority asc, id asc").Find(&b).Error; err == nil {
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configCache.baseURLs = b
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}
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}
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// RefreshConfigCache reloads all cached platform configuration. Admin handlers
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// call this after writing changes so the next request sees them.
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func RefreshConfigCache(db *gorm.DB) {
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LoadConfigCache(db)
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}
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// GetSiteSetting returns a pointer to the cached site settings (read-only copy
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// semantics: callers must not mutate).
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func GetSiteSetting() *SiteSetting {
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configCache.mu.RLock()
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defer configCache.mu.RUnlock()
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return configCache.site
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}
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// GetUploadConfig returns the cached upload policy.
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func GetUploadConfig() *UploadConfig {
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configCache.mu.RLock()
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defer configCache.mu.RUnlock()
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return configCache.upload
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}
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// GetUploadFileTypes returns the cached list of permitted file types.
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func GetUploadFileTypes() []UploadFileType {
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configCache.mu.RLock()
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defer configCache.mu.RUnlock()
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return configCache.types
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}
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// GetDownloadBaseURLs returns the cached list of download base URLs.
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func GetDownloadBaseURLs() []DownloadBaseURL {
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configCache.mu.RLock()
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defer configCache.mu.RUnlock()
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return configCache.baseURLs
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}
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// DefaultDownloadBaseURL returns the base URL used to build attachment download
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// links: the enabled row marked IsDefault, else the highest-priority enabled
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// row. Returns an empty string if none is configured.
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func DefaultDownloadBaseURL() string {
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configCache.mu.RLock()
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defer configCache.mu.RUnlock()
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// Rows are ordered is_default desc, priority asc, so the first enabled row
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// is the right pick.
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for _, b := range configCache.baseURLs {
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if b.Enabled {
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return b.BaseURL
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}
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}
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return ""
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}
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