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listenbrainz.go
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listenbrainz.go
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package main
import (
"encoding/json"
"fmt"
"io"
"log"
"net/http"
"strings"
"time"
)
type Recommendations struct {
Payload struct {
Count int `json:"count"`
Entity string `json:"entity"`
LastUpdated int `json:"last_updated"`
Mbids []struct {
LatestListenedAt time.Time `json:"latest_listened_at"`
RecordingMbid string `json:"recording_mbid"`
Score float64 `json:"score"`
} `json:"mbids"`
TotalMbidCount int `json:"total_mbid_count"`
UserName string `json:"user_name"`
} `json:"payload"`
}
type Recording struct {
Length int `json:"length"`
Name string `json:"name"`
Rels []any `json:"rels"`
}
type Metadata struct {
Recording struct {
Length int `json:"length"`
Name string `json:"name"`
Rels []any `json:"rels"`
} `json:"recording"`
Release struct {
AlbumArtistName string `json:"album_artist_name"`
CaaID int64 `json:"caa_id"`
CaaReleaseMbid string `json:"caa_release_mbid"`
Mbid string `json:"mbid"`
Name string `json:"name"`
ReleaseGroupMbid string `json:"release_group_mbid"`
Year int `json:"year"`
} `json:"release"`
}
type Recordings map[string]Metadata
type Playlists struct {
Playlist []struct {
Data struct {
Date time.Time `json:"date"`
Identifier string `json:"identifier"`
Title string `json:"title"`
} `json:"playlist"`
} `json:"playlists"`
}
type Exploration struct {
Playlist struct {
Annotation string `json:"annotation"`
Creator string `json:"creator"`
Date time.Time `json:"date"`
Identifier string `json:"identifier"`
Title string `json:"title"`
Tracks []struct {
Album string `json:"album"`
Creator string `json:"creator"`
Identifier []string `json:"identifier"`
Title string `json:"title"`
} `json:"track"`
} `json:"playlist"`
}
type Track []struct {
Album string
Artist string
Title string
}
func getReccs(cfg Listenbrainz) []string {
var reccs Recommendations
var mbids []string
body := lbRequest(fmt.Sprintf("cf/recommendation/user/%s/recording", cfg.User))
err := json.Unmarshal(body, &reccs)
if err != nil {
log.Fatalf("failed to unmarshal body: %s", err.Error())
}
for _, rec := range reccs.Payload.Mbids {
mbids = append(mbids, rec.RecordingMbid)
}
if mbids == nil {
log.Fatal("no recommendations found, exiting...")
}
return mbids
}
func getTracks(mbids []string) Track {
var tracks Track
var recordings Recordings
str_mbids := strings.Join(mbids, ",")
body := lbRequest(fmt.Sprintf("metadata/recording/?recording_mbids=%s&inc=release", str_mbids))
err := json.Unmarshal(body, &recordings)
if err != nil {
log.Fatalf("failed to unmarshal body: %s", err.Error())
}
for _, recording := range recordings {
tracks = append(tracks, struct {
Album string
Artist string
Title string
}{
Album: recording.Release.Name,
Artist: recording.Release.AlbumArtistName,
Title: recording.Recording.Name,
})
}
return tracks
}
func getWeeklyExploration(cfg Listenbrainz) (string, error) {
var playlists Playlists
body := lbRequest(fmt.Sprintf("user/%s/playlists/createdfor", cfg.User))
err := json.Unmarshal(body, &playlists)
if err != nil {
log.Fatalf("failed to unmarshal body: %s", err.Error())
}
for _, playlist := range playlists.Playlist {
_, currentWeek := time.Now().Local().ISOWeek()
_, creationWeek := playlist.Data.Date.ISOWeek()
if strings.Contains(playlist.Data.Title, "Weekly Exploration") && currentWeek == creationWeek {
id := strings.Split(playlist.Data.Identifier, "/")
return id[len(id)-1], nil
}
}
return "", fmt.Errorf("failed to get new exploration playlist, check if ListenBrainz has generated one")
}
func parseWeeklyExploration(identifier string) Track {
var tracks Track
var exploration Exploration
body := lbRequest(fmt.Sprintf("playlist/%s", identifier))
err := json.Unmarshal(body, &exploration)
if err != nil {
log.Fatalf("failed to unmarshal body: %s", err.Error())
}
for _, track := range exploration.Playlist.Tracks {
tracks = append(tracks, struct {
Album string
Artist string
Title string
}{
Album: track.Album,
Artist: track.Creator,
Title: track.Title,
})
}
return tracks
}
func lbRequest(path string) []byte { // Handle ListenBrainz API requests
client := http.Client{}
reqString := fmt.Sprintf("https://api.listenbrainz.org/1/%s", path)
req, err := http.NewRequest(http.MethodGet, reqString, nil)
if err != nil {
log.Fatalf("Failed to initialize request: %v", err)
}
resp, err := client.Do(req)
if err != nil {
log.Fatalf("Failed to make request: %v", err)
}
body, err := io.ReadAll(resp.Body)
if err != nil {
log.Fatalf("Failed to read response body: %v", err)
}
return body
}