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celestix
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| package shortener | ||
|
|
||
| import ( | ||
| "time" | ||
|
|
||
| "github.com/AnimeKaizoku/cacher" | ||
| "github.com/srinkco/srink/utils/randomiser" | ||
| "gorm.io/driver/sqlite" | ||
| "gorm.io/gorm" | ||
| "gorm.io/gorm/logger" | ||
| ) | ||
|
|
||
| const DEF_SQLITE_FILE_NAME = "srink.sql" | ||
|
|
||
| type InSQLEngine struct { | ||
| session *gorm.DB | ||
| cache *cacher.Cacher[string, string] | ||
| } | ||
|
|
||
| type Surl struct { | ||
| Hash string `gorm:"primary_key"` | ||
| Dest string | ||
| } | ||
|
|
||
| func newInSQLEngine(dbName string) *InSQLEngine { | ||
| db, err := gorm.Open(sqlite.Open(dbName), &gorm.Config{ | ||
| SkipDefaultTransaction: true, | ||
| Logger: logger.Default.LogMode(logger.Error), | ||
| }) | ||
| if err != nil { | ||
| panic("failed to connect database") | ||
| } | ||
|
|
||
| // Migrate the schema | ||
| db.AutoMigrate(&Surl{}) | ||
|
|
||
| return &InSQLEngine{ | ||
| session: db, | ||
| cache: cacher.NewCacher[string, string](&cacher.NewCacherOpts{ | ||
| TimeToLive: time.Hour * 24 * 30, | ||
| CleanInterval: time.Hour * 24 * 31, | ||
| }), | ||
| } | ||
| } | ||
|
|
||
| func (e *InSQLEngine) Shorten(url, hash string) string { | ||
| if hash == "" { | ||
| if hash, ok := e.getHash(url); ok { | ||
| return hash | ||
| } | ||
| hash = randomiser.GetString(HASH_NUM) | ||
| } | ||
| e.saveUrl(hash, url) | ||
| return hash | ||
| } | ||
|
|
||
| func (e *InSQLEngine) saveUrl(hash, dest string) { | ||
| tx := e.session.Begin() | ||
| v := &Surl{Hash: hash} | ||
| tx.FirstOrCreate(v) | ||
| v.Dest = dest | ||
| tx.Save(v) | ||
| tx.Commit() | ||
| e.cache.Set(hash, dest) | ||
| } | ||
|
|
||
| func (e *InSQLEngine) getHash(url string) (string, bool) { | ||
| var s Surl | ||
| e.session.Where("dest = ?", url).Find(&s) | ||
| return s.Hash, s.Hash != "" | ||
| } | ||
|
|
||
| func (e *InSQLEngine) GetUrl(hash string) string { | ||
| url, ok := e.cache.Get(hash) | ||
| if ok { | ||
| return url | ||
| } | ||
| var s Surl | ||
| e.session.Where("hash = ?", hash).Find(&s) | ||
| if s.Dest != "" { | ||
| e.cache.Set(hash, s.Dest) | ||
| } | ||
| return s.Dest | ||
| } |
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