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package main
import (
"database/sql"
"encoding/xml"
"log"
"time"
_ "github.com/mattn/go-sqlite3"
)
type Scrobble struct {
Artist Correctable `xml:"artist" json:"artist"`
AlbumArtist Correctable `xml:"albumArtist" json:"albumArtist"`
TrackName Correctable `xml:"track" json:"track"`
Album Correctable `xml:"album" json:"album"`
TrackNumber int `xml:"-" json:"-"`
Duration int `xml:"-" json:"-"`
Time time.Time `xml:"timestamp" json:"timestamp,string"`
Chosen bool `xml:"-" json:"-"`
Mbid string `xml:"-" json:"-"`
MbidComp string
Session string `xml:"-" json:"-"`
User string
Image string
}
type Session struct {
XMLName xml.Name `json:"-" xml:"session"`
User string `json:"name" xml:"name"`
Key string `json:"key" xml:"key"`
Client string
ClientVersion string
Protocol string
Created time.Time
Subscriber int64 `json:"subscriber" xml:"subscriber"`
}
type DataStore interface {
PutSession(*Session) error
GetSession(key string) (*Session, error)
GetPassword(userName string) (string, error)
PutScrobbles([]Scrobble) error
RecentScrobbles(lfmName string) []*Scrobble
Api
}
type SqlStore struct {
*sql.DB
}
func (store *SqlStore) PutSession(s *Session) error {
query := `
INSERT INTO scrobbling_sessions (lfm_name, session_key, client, client_version, protocol)
VALUES ($1, $2, $3, $4, $5)`
_, err := store.Exec(query, s.User, s.Key, s.Client, s.ClientVersion, s.Protocol)
return err
}
func (store *SqlStore) GetSession(key string) (*Session, error) {
query := `
SELECT lfm_name, session_key, client, client_version, protocol, created
FROM scrobbling_sessions WHERE session_key = $1`
row := store.QueryRow(query, key)
s := &Session{}
err := row.Scan(&s.User, &s.Key, &s.Client, &s.ClientVersion, &s.Protocol,
&s.Created)
return s, err
}
func (store *SqlStore) GetPassword(name string) (string, error) {
var password string
row := store.QueryRow("SELECT lfm_password FROM users WHERE lfm_name = $1",
name)
err := row.Scan(&password)
return password, err
}
func (store *SqlStore) PutScrobbles(scrobbles []Scrobble) error {
tx, err := store.Begin()
if err != nil {
return err
}
query := `
INSERT INTO scrobbles
(artist, albumartist, trackname, album, tracknumber, duration, time,
chosen, mbid, mbid_computed, session_key, lfm_name)
VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12)`
st, err := tx.Prepare(query)
if err != nil {
return err
}
for _, s := range scrobbles {
_, err = st.Exec(s.Artist, s.AlbumArtist, s.TrackName, s.Album,
s.TrackNumber, s.Duration, s.Time, s.Chosen, s.Mbid, s.MbidComp,
s.Session, s.User)
if err != nil {
tx.Rollback()
return err
}
}
return tx.Commit()
}
func (store *SqlStore) RecentScrobbles(lfmName string) []*Scrobble {
scrobbles := make([]*Scrobble, 0, 10)
query := `
SELECT artist, album, trackname, time, image
FROM scrobbles
LEFT JOIN songs ON COALESCE(scrobbles.mbid, scrobbles.mbid_computed) = songs.mbid
WHERE lfm_name=$1 ORDER BY time DESC LIMIT 10`
rows, err := store.Query(query, lfmName)
if err != nil {
log.Println(err)
}
for rows.Next() {
scrobble := new(Scrobble)
rows.Scan(&scrobble.Artist.Name, &scrobble.Album.Name,
&scrobble.TrackName.Name, &scrobble.Time, &scrobble.Image)
scrobbles = append(scrobbles, scrobble)
}
rows.Close()
return scrobbles
}
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