gosora/common/setting.go

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package common
import (
"database/sql"
"strconv"
"strings"
"sync/atomic"
"../query_gen/lib"
)
// SettingMap is a map type specifically for holding the various settings admins set to toggle features on and off or to otherwise alter Gosora's behaviour from the Control Panel
type SettingMap map[string]interface{}
var SettingBox atomic.Value // An atomic value pointing to a SettingBox
type OptionLabel struct {
Label string
Value int
Selected bool
}
type Setting struct {
Name string
Content string
Type string
Constraint string
}
type SettingStmts struct {
getFull *sql.Stmt
}
var settingStmts SettingStmts
func init() {
SettingBox.Store(SettingMap(make(map[string]interface{})))
DbInits.Add(func(acc *qgen.Accumulator) error {
settingStmts = SettingStmts{
getFull: acc.Select("settings").Columns("name, content, type, constraints").Prepare(),
}
return acc.FirstError()
})
}
func LoadSettings() error {
rows, err := settingStmts.getFull.Query()
if err != nil {
return err
}
defer rows.Close()
var sBox = SettingMap(make(map[string]interface{}))
var sname, scontent, stype, sconstraints string
for rows.Next() {
err = rows.Scan(&sname, &scontent, &stype, &sconstraints)
if err != nil {
return err
}
errmsg := sBox.ParseSetting(sname, scontent, stype, sconstraints)
if errmsg != "" {
return err
}
}
err = rows.Err()
if err != nil {
return err
}
SettingBox.Store(sBox)
return nil
}
// TODO: Add better support for HTML attributes (html-attribute). E.g. Meta descriptions.
func (sBox SettingMap) ParseSetting(sname string, scontent string, stype string, constraint string) string {
var err error
var ssBox = map[string]interface{}(sBox)
if stype == "bool" {
ssBox[sname] = (scontent == "1")
} else if stype == "int" {
ssBox[sname], err = strconv.Atoi(scontent)
if err != nil {
return "You were supposed to enter an integer x.x\nType mismatch in " + sname
}
} else if stype == "int64" {
ssBox[sname], err = strconv.ParseInt(scontent, 10, 64)
if err != nil {
return "You were supposed to enter an integer x.x\nType mismatch in " + sname
}
} else if stype == "list" {
cons := strings.Split(constraint, "-")
if len(cons) < 2 {
return "Invalid constraint! The second field wasn't set!"
}
con1, err := strconv.Atoi(cons[0])
con2, err2 := strconv.Atoi(cons[1])
if err != nil || err2 != nil {
return "Invalid contraint! The constraint field wasn't an integer!"
}
value, err := strconv.Atoi(scontent)
if err != nil {
return "Only integers are allowed in this setting x.x\nType mismatch in " + sname
}
if value < con1 || value > con2 {
return "Only integers between a certain range are allowed in this setting"
}
ssBox[sname] = value
} else {
ssBox[sname] = scontent
}
return ""
}