Get additional song metadata from last.fm

1 files changed, 88 insertions, 16 deletions

diff --git a/lfmclient.go b/lfmclient.go
index 244ab8c..9c500b7 100644
--- a/lfmclient.go
+++ b/lfmclient.go
@@ -3,7 +3,9 @@ package main
 import (
 	"encoding/json"
 	"io/ioutil"
+	"log"
 	"net/http"
+	"strconv"
 )
 
 type AlbumImage struct {
@@ -11,12 +13,8 @@ type AlbumImage struct {
 	Href string `json:"#text"`
 }
 
-type TrackAlbum struct {
-	Images []AlbumImage `json:"image"`
-}
-
-func (t TrackGetInfo) GetImage(size string) string {
-	images := t.Album.Images
+func (a AlbumInfo) GetImage(size string) string {
+	images := a.Images
 	for _, image := range images {
 		if image.Size == size {
 			return image.Href
@@ -25,23 +23,97 @@ func (t TrackGetInfo) GetImage(size string) string {
 	return "https://lastfm-img2.akamaized.net/i/u/64s/4128a6eb29f94943c9d206c08e625904.png"
 }
 
-type TrackGetInfo struct {
-	Mbid  string     `json:"mbid"`
-	Album TrackAlbum `jon:"album"`
+type AlbumInfo struct {
+	Images []AlbumImage `json:"image"`
+	Mbid   string       `json:"mbid"`
+	Name   string       `json:"title"`
+}
+
+type ArtistInfo struct {
+	Name string `json:"name"`
 }
 
-func (app *App) TrackInfo(track string, artist string) TrackGetInfo {
+type Position struct {
+	TrackNumber string `json:"position"`
+}
+
+type TrackInfo struct {
+	Name     string     `json:"name"`
+	Mbid     string     `json:"mbid"`
+	Duration string     `json:"duration"`
+	Artist   ArtistInfo `json:"artist"`
+	Album    AlbumInfo  `json:"album"`
+	Position `json:"@attr"`
+}
+
+func (app *App) LfmQuery(payload map[string]string) []byte {
 	r, _ := http.NewRequest("GET", "http://ws.audioscrobbler.com/2.0/", nil)
 	values := r.URL.Query()
-	values.Add("method", "track.getInfo")
 	values.Add("api_key", app.Config.Lfm.ApiKey)
-	values.Add("artist", artist)
-	values.Add("track", track)
 	values.Add("format", "json")
+	for key, value := range payload {
+		values.Add(key, value)
+	}
 	r.URL.RawQuery = values.Encode()
 	resp, _ := http.DefaultClient.Do(r)
 	body, _ := ioutil.ReadAll(resp.Body)
-	var dst map[string]TrackGetInfo
-	json.Unmarshal(body, &dst)
-	return dst["track"]
+	return body
+}
+
+func (app *App) AlbumImage(artist, album string) string {
+	r := app.LfmQuery(map[string]string{
+		"method": "album.getInfo",
+		"artist": artist,
+		"album":  album,
+	})
+	var dst map[string]AlbumInfo
+	json.Unmarshal(r, &dst)
+	return dst["album"].GetImage("medium")
+}
+
+func (app *App) TrackInfo(artist, name string) *Scrobble {
+	r := app.LfmQuery(map[string]string{
+		"method":      "track.getInfo",
+		"artist":      artist,
+		"track":       name,
+		"autocorrect": "1",
+	})
+	var dst map[string]TrackInfo
+	json.Unmarshal(r, &dst)
+	track := dst["track"]
+	duration, _ := strconv.Atoi(track.Duration)
+	position, _ := strconv.Atoi(track.TrackNumber)
+	s := &Scrobble{
+		Artist:      NewCorrectable(track.Artist.Name),
+		Album:       NewCorrectable(track.Album.Name),
+		TrackName:   NewCorrectable(track.Name),
+		Duration:    duration * 1000,
+		TrackNumber: position,
+		Mbid:        track.Mbid,
+		Image:       track.Album.GetImage("medium"),
+	}
+	return s
+
+}
+
+func (app *App) GetSong(s *Scrobble) {
+	var err error
+	if s.Album.Name != "" {
+		id, _ := app.GetSongId(s.Artist.Name, s.Album.Name, s.TrackName.Name)
+		if id == 0 {
+			s.Image = app.AlbumImage(s.Artist.Name, s.Album.Name)
+			id, err = app.InsertSong(s)
+			if err != nil {
+				log.Println(err)
+			}
+		}
+		s.SongId = id
+	} else {
+		s2 := app.TrackInfo(s.Artist.Name, s.TrackName.Name)
+		id, err := app.InsertSong(s2)
+		if err != nil {
+			log.Println(err)
+		}
+		s.SongId = id
+	}
 }