magnetico-go-migrator/old/sqlite.go

61 lines
1.2 KiB
Go

package old
import (
"database/sql"
"fmt"
"github.com/skobkin/magnetico/pkg/persistence"
"net/url"
)
func OpenSqliteDb(url_ url.URL) (*sql.DB, error) {
url_.Scheme = ""
return sql.Open("sqlite3", url_.String())
}
func GetNumberOfTorrents(db sql.DB) (uint, error) {
rows, err := db.Query("SELECT COUNT(id) FROM torrents;")
if err != nil {
return 0, err
}
defer rows.Close()
if rows.Next() != true {
return 0, fmt.Errorf("No rows returned from `SELECT COUNT(id)`")
}
var n *uint
if err = rows.Scan(&n); err != nil {
return 0, err
}
// If the database is empty (i.e. 0 entries in 'torrents') then the query will return nil.
if n == nil {
return 0, nil
} else {
return *n, nil
}
}
func GetFilesForTorrent(pyDb sql.DB, torrent persistence.TorrentMetadata) ([]persistence.File, error) {
files := make([]persistence.File, 0)
// Selecting files for torrent
fRows, err := pyDb.Query("SELECT f.path, f.size FROM files AS f WHERE f.torrent_id = ? ORDER BY f.id ASC;", torrent.ID)
if err != nil {
return files, nil
}
defer fRows.Close()
for fRows.Next() {
var file persistence.File
err := fRows.Scan(&file.Path, &file.Size)
if err != nil {
return files, err
}
files = append(files, file)
}
return files, nil
}