feat: settings manage api

internal/db/setting.go

@@ -4,8 +4,40 @@ import (
 	"fmt"
 	"github.com/alist-org/alist/v3/internal/model"
 	"github.com/pkg/errors"
+	log "github.com/sirupsen/logrus"
 )
 
+var settingsMap map[string]string
+var publicSettingsMap map[string]string
+
+func GetPublicSettingsMap() map[string]string {
+	if settingsMap == nil {
+		publicSettingsMap = make(map[string]string)
+		settings, err := GetPublicSettings()
+		if err != nil {
+			log.Errorf("failed to get settings: %+v", err)
+		}
+		for _, setting := range settings {
+			publicSettingsMap[setting.Key] = setting.Value
+		}
+	}
+	return publicSettingsMap
+}
+
+func GetSettingsMap() map[string]string {
+	if settingsMap == nil {
+		settingsMap = make(map[string]string)
+		settings, err := GetSettings()
+		if err != nil {
+			log.Errorf("failed to get settings: %+v", err)
+		}
+		for _, setting := range settings {
+			settingsMap[setting.Key] = setting.Value
+		}
+	}
+	return settingsMap
+}
+
 func GetSettings() ([]model.SettingItem, error) {
 	var items []model.SettingItem
 	if err := db.Find(&items).Error; err != nil {
@@ -39,10 +71,12 @@ func GetSettingsByGroup(group int) ([]model.SettingItem, error) {
 }
 
 func SaveSettings(items []model.SettingItem) error {
+	settingsMap = nil
 	return errors.WithStack(db.Save(items).Error)
 }
 
 func SaveSetting(item model.SettingItem) error {
+	settingsMap = nil
 	return errors.WithStack(db.Save(item).Error)
 }
 
@@ -50,5 +84,13 @@ func DeleteSettingByKey(key string) error {
 	setting := model.SettingItem{
 		Key: key,
 	}
+	old, err := GetSettingByKey(key)
+	if err != nil {
+		return errors.WithMessage(err, "failed to get setting")
+	}
+	if !old.IsDeprecated() {
+		return errors.Errorf("setting [%s] is not deprecated", key)
+	}
+	settingsMap = nil
 	return errors.WithStack(db.Delete(&setting).Error)
 }

internal/model/setting.go

@@ -21,5 +21,9 @@ type SettingItem struct {
 	Type   string `json:"type"`                                     // string, number, bool, select
 	Values string `json:"values"`                                   // values for select
 	Group  int    `json:"group"`                                    // use to group setting in frontend
-	Flag   int    `json:"flag"`                                     // 0 = public, 1 = private, 2 = deprecated, etc.
+	Flag   int    `json:"flag"`                                     // 0 = public, 1 = private, 2 = readonly, 3 = deprecated, etc.
+}
+
+func (s SettingItem) IsDeprecated() bool {
+	return s.Flag == DEPRECATED
 }