Moved specifc backends into separate packages

backends/listenbrainz/client.go

@@ -38,7 +38,7 @@ type Client struct {
 	MaxResults int
 }
 
-func New(token string) Client {
+func NewClient(token string) Client {
 	resty := resty.New()
 	resty.SetBaseURL(listenBrainzBaseURL)
 	resty.SetAuthScheme("Token")

backends/listenbrainz/client_test.go

@@ -34,7 +34,7 @@ import (
 
 func TestNewClient(t *testing.T) {
 	token := "foobar123"
-	client := listenbrainz.New(token)
+	client := listenbrainz.NewClient(token)
 	assert.Equal(t, token, client.HttpClient.Token)
 	assert.Equal(t, listenbrainz.DefaultItemsPerGet, client.MaxResults)
 }
@@ -43,7 +43,7 @@ func TestGetListens(t *testing.T) {
 	defer httpmock.DeactivateAndReset()
 
 	token := "thetoken"
-	client := listenbrainz.New(token)
+	client := listenbrainz.NewClient(token)
 	setupHttpMock(t, client.HttpClient.GetClient(),
 		"https://api.listenbrainz.org/1/user/outsidecontext/listens",
 		"testdata/listens.json")

backends/listenbrainz/listenbrainz.go

@@ -0,0 +1,98 @@
+/*
+Copyright © 2023 Philipp Wolfer <phw@uploadedlobster.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+package listenbrainz
+
+import (
+	"slices"
+	"time"
+
+	"github.com/spf13/viper"
+	"go.uploadedlobster.com/scotty/models"
+)
+
+type ListenBrainzApiBackend struct {
+	client   Client
+	username string
+}
+
+func (b ListenBrainzApiBackend) FromConfig(config *viper.Viper) models.Backend {
+	b.client = NewClient(config.GetString("token"))
+	b.client.MaxResults = MaxItemsPerGet
+	b.username = config.GetString("username")
+	return b
+}
+
+func (b ListenBrainzApiBackend) ExportListens(oldestTimestamp time.Time) ([]models.Listen, error) {
+	maxTime := time.Now()
+	minTime := time.Unix(0, 0)
+	listens := make([]models.Listen, 0)
+
+out:
+	for {
+		result, err := b.client.GetListens(b.username, maxTime, minTime)
+		if err != nil {
+			return nil, err
+		}
+
+		count := len(result.Payload.Listens)
+		if count == 0 {
+			break
+		}
+
+		// Set maxTime to the oldest returned listen
+		maxTime = time.Unix(result.Payload.Listens[count-1].ListenedAt, 0)
+
+		for _, listen := range result.Payload.Listens {
+			if listen.ListenedAt > oldestTimestamp.Unix() {
+				listens = append(listens, ListenFromListenBrainz(listen))
+			} else {
+				// result contains listens older then oldestTimestamp,
+				// we can stop requesting more
+				break out
+			}
+		}
+	}
+
+	slices.Reverse(listens)
+	return listens, nil
+}
+
+func ListenFromListenBrainz(lbListen Listen) models.Listen {
+	track := lbListen.TrackMetadata
+	listen := models.Listen{
+		ListenedAt: time.Unix(lbListen.ListenedAt, 0),
+		UserName:   lbListen.UserName,
+		Track: models.Track{
+			TrackName:        track.TrackName,
+			ReleaseName:      track.ReleaseName,
+			ArtistNames:      []string{track.ArtistName},
+			Duration:         track.Duration(),
+			TrackNumber:      track.TrackNumber(),
+			RecordingMbid:    models.MBID(track.RecordingMbid()),
+			ReleaseMbid:      models.MBID(track.ReleaseMbid()),
+			ReleaseGroupMbid: models.MBID(track.ReleaseGroupMbid()),
+			Isrc:             track.Isrc(),
+			AdditionalInfo:   track.AdditionalInfo,
+		},
+	}
+	return listen
+}

backends/listenbrainz/listenbrainz_test.go

@@ -0,0 +1,65 @@
+/*
+Copyright © 2023 Philipp Wolfer <phw@uploadedlobster.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+package listenbrainz_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"go.uploadedlobster.com/scotty/backends/listenbrainz"
+	"go.uploadedlobster.com/scotty/models"
+)
+
+func TestListenFromListenBrainz(t *testing.T) {
+	lbListen := listenbrainz.Listen{
+		ListenedAt: 1699289873,
+		UserName:   "outsidecontext",
+		TrackMetadata: listenbrainz.Track{
+			TrackName:   "The Track",
+			ArtistName:  "The Artist",
+			ReleaseName: "The Release",
+			AdditionalInfo: map[string]any{
+				"duration_ms":        528235,
+				"foo":                "bar",
+				"isrc":               "DES561720901",
+				"tracknumber":        8,
+				"recording_mbid":     "e225fb84-dc9a-419e-adcd-9890f59ec432",
+				"release_group_mbid": "80aca1ee-aa51-41be-9f75-024710d92ff4",
+				"release_mbid":       "d7f22677-9803-4d21-ba42-081b633a6f68",
+			},
+		},
+	}
+	listen := listenbrainz.ListenFromListenBrainz(lbListen)
+	assert.Equal(t, time.Unix(1699289873, 0), listen.ListenedAt)
+	assert.Equal(t, lbListen.UserName, listen.UserName)
+	assert.Equal(t, time.Duration(528235*time.Millisecond), listen.Duration)
+	assert.Equal(t, lbListen.TrackMetadata.TrackName, listen.TrackName)
+	assert.Equal(t, lbListen.TrackMetadata.ReleaseName, listen.ReleaseName)
+	assert.Equal(t, []string{lbListen.TrackMetadata.ArtistName}, listen.ArtistNames)
+	assert.Equal(t, 8, listen.TrackNumber)
+	assert.Equal(t, models.MBID("e225fb84-dc9a-419e-adcd-9890f59ec432"), listen.RecordingMbid)
+	assert.Equal(t, models.MBID("d7f22677-9803-4d21-ba42-081b633a6f68"), listen.ReleaseMbid)
+	assert.Equal(t, models.MBID("80aca1ee-aa51-41be-9f75-024710d92ff4"), listen.ReleaseGroupMbid)
+	assert.Equal(t, "DES561720901", listen.Isrc)
+	assert.Equal(t, lbListen.TrackMetadata.AdditionalInfo["foo"], listen.AdditionalInfo["foo"])
+}