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store.go
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store.go
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package main
import (
"fmt"
"os"
"github.com/dgraph-io/badger"
)
var isVerbose bool
type store struct {
db *badger.DB
isClosed bool
keys storeKeys
secret []byte
}
type storeKeys struct {
appSecret []byte
sonarrKey []byte
sonarrURL []byte
}
func initDataStore(dirName string) (store, error) {
var db store
if isVerbose {
fmt.Println("checking if our database exists in the home directory at:", dirName)
}
// create a directory for our database
if _, err := os.Stat(dirName); os.IsNotExist(err) {
if isVerbose {
fmt.Println("creating directory because it doesn't exist")
}
if err := os.Mkdir(dirName, os.ModePerm); err != nil {
return db, err
}
}
options := badger.DefaultOptions
options.Dir = dirName
options.ValueDir = dirName
kvStore, err := badger.Open(options)
if err != nil {
return db, err
}
if isVerbose {
fmt.Println("successfully opened data store")
}
db.db = kvStore
db.keys = storeKeys{
sonarrKey: []byte("sonarr-key"),
sonarrURL: []byte("sonarr-url"),
}
return db, nil
}
func (s store) Close() {
if s.isClosed {
fmt.Println("data store already closed")
return
}
if err := s.db.Close(); err != nil {
fmt.Printf("data store failed to closed: %v\n", err)
}
s.isClosed = true
}
func (s store) getSonarrKey() (string, error) {
var sonarrKey string
if err := s.db.View(func(txn *badger.Txn) error {
item, err := txn.Get(s.keys.sonarrKey)
if err != nil {
return err
}
serializedSonarrURL, err := item.Value()
if err != nil {
return err
}
sonarrKey = string(serializedSonarrURL)
return nil
}); err != nil {
return sonarrKey, err
}
if isVerbose {
fmt.Printf("Your sonarr key is %s\n", sonarrKey)
}
return sonarrKey, nil
}
func (s store) saveSonarrKey(key string) error {
if isVerbose {
fmt.Printf("your sonarr key: %s\n", string(key))
}
if err := s.db.Update(func(txn *badger.Txn) error {
return txn.Set(s.keys.sonarrKey, []byte(key), 0x00)
}); err != nil {
return err
}
if isVerbose {
fmt.Println("saved key to store")
}
return nil
}
func (s store) getSonarrURL() (string, error) {
var sonarrURL string
err := s.db.View(func(txn *badger.Txn) error {
item, err := txn.Get(s.keys.sonarrURL)
if err != nil {
return err
}
serializedServer, err := item.Value()
if err != nil {
return err
}
sonarrURL = string(serializedServer)
return nil
})
return sonarrURL, err
}
func (s store) saveSonarrURL(sonarrURL string) error {
return s.db.Update(func(txn *badger.Txn) error {
return txn.Set(s.keys.sonarrURL, []byte(sonarrURL), 0)
})
}