feat: implement channel settings configuration

fix #620

model/channel.go

@@ -34,6 +34,7 @@ type Channel struct {
 	AutoBan           *int    `json:"auto_ban" gorm:"default:1"`
 	OtherInfo         string  `json:"other_info"`
 	Tag               *string `json:"tag" gorm:"index"`
+	Setting           string  `json:"setting" gorm:"type:text"`
 }
 
 func (channel *Channel) GetModels() []string {
@@ -469,3 +470,23 @@ func SearchTags(keyword string, group string, model string, idSort bool) ([]*str
 
 	return tags, nil
 }
+
+func (channel *Channel) GetSetting() map[string]interface{} {
+	setting := make(map[string]interface{})
+	if channel.Setting != "" {
+		err := json.Unmarshal([]byte(channel.Setting), &setting)
+		if err != nil {
+			common.SysError("failed to unmarshal setting: " + err.Error())
+		}
+	}
+	return setting
+}
+
+func (channel *Channel) SetSetting(setting map[string]interface{}) {
+	settingBytes, err := json.Marshal(setting)
+	if err != nil {
+		common.SysError("failed to marshal setting: " + err.Error())
+		return
+	}
+	channel.Setting = string(settingBytes)
+}