Implemented Maloja listen export

backends/base.go

@@ -76,5 +76,6 @@ func ResolveBackend[T interface{}](config *viper.Viper) (T, error) {
 var knownBackends = map[string]func() Backend{
 	"dump":             func() Backend { return &DumpBackend{} },
 	"listenbrainz-api": func() Backend { return &ListenBrainzApiBackend{} },
+	"maloja-api":       func() Backend { return &MalojaApiBackend{} },
 	"scrobbler-log":    func() Backend { return &ScrobblerLogBackend{} },
 }

backends/listenbrainz/models.go

@@ -55,11 +55,11 @@ func (t Track) Duration() time.Duration {
 	var duration time.Duration
 	milliseconds, ok := t.AdditionalInfo["duration_ms"].(float64)
 	if ok {
-		duration = time.Duration(int(milliseconds) * int(time.Millisecond))
+		duration = time.Duration(int64(milliseconds) * int64(time.Millisecond))
 	} else {
 		seconds, ok := t.AdditionalInfo["duration_ms"].(float64)
 		if ok {
-			duration = time.Duration(int(seconds) * int(time.Second))
+			duration = time.Duration(int64(seconds) * int64(time.Second))
 		}
 	}
 	return duration

backends/maloja.go

@@ -0,0 +1,97 @@
+/*
+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 backends
+
+import (
+	"slices"
+	"strings"
+	"time"
+
+	"github.com/spf13/viper"
+	"go.uploadedlobster.com/scotty/backends/maloja"
+)
+
+type MalojaApiBackend struct {
+	client maloja.Client
+}
+
+func (b MalojaApiBackend) FromConfig(config *viper.Viper) Backend {
+	b.client = maloja.New(
+		config.GetString("server-url"),
+		config.GetString("token"),
+	)
+	return b
+}
+
+func (b MalojaApiBackend) ExportListens(oldestTimestamp time.Time) ([]Listen, error) {
+	page := 0
+	perPage := 1000
+
+	listens := make([]Listen, 0)
+
+out:
+	for {
+		result, err := b.client.GetListens(page, perPage)
+		if err != nil {
+			return nil, err
+		}
+
+		count := len(result.Listens)
+		if count == 0 {
+			break
+		}
+
+		for _, listen := range result.Listens {
+			if listen.ListenedAt > oldestTimestamp.Unix() {
+				listens = append(listens, Listen{}.FromMaloja(listen))
+			} else {
+				break out
+			}
+		}
+
+		page += 1
+	}
+
+	slices.Reverse(listens)
+	return listens, nil
+}
+
+func (l Listen) FromMaloja(mlListen maloja.Listen) Listen {
+	track := mlListen.Track
+	listen := Listen{
+		ListenedAt:       time.Unix(mlListen.ListenedAt, 0),
+		PlaybackDuration: time.Duration(mlListen.Duration * int64(time.Second)),
+		Track: Track{
+			TrackName:   track.Title,
+			ReleaseName: track.Album.Title,
+			ArtistNames: track.Artists,
+			Duration:    time.Duration(track.Length * int64(time.Second)),
+		},
+	}
+
+	client, found := strings.CutPrefix(mlListen.Origin, "client:")
+	if found {
+		listen.AdditionalInfo["media_player"] = client
+	}
+
+	return listen
+}

backends/maloja/client.go

@@ -0,0 +1,58 @@
+/*
+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 maloja
+
+import (
+	"strconv"
+
+	"github.com/go-resty/resty/v2"
+)
+
+type Client struct {
+	resty *resty.Client
+	token string
+}
+
+func New(serverUrl string, token string) Client {
+	resty := resty.New()
+	resty.SetBaseURL(serverUrl)
+	resty.SetHeader("Accept", "application/json")
+	client := Client{
+		resty: resty,
+		token: token,
+	}
+
+	return client
+}
+
+func (c Client) GetListens(page int, perPage int) (GetListensResult, error) {
+	const path = "/apis/mlj_1/scrobbles"
+	result := &GetListensResult{}
+	_, err := c.resty.R().
+		SetQueryParams(map[string]string{
+			"page":    strconv.Itoa(page),
+			"perpage": strconv.Itoa(perPage),
+		}).
+		SetResult(result).
+		Get(path)
+	return *result, err
+}

backends/maloja/models.go

@@ -0,0 +1,56 @@
+/*
+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 maloja
+
+type GetListensResult struct {
+	Status     string     `json:"status"`
+	Listens    []Listen   `json:"list"`
+	Pagination Pagination `json:"pagination"`
+}
+
+type Listen struct {
+	ListenedAt int64 `json:"time"`
+	Duration   int64 `json:"duration"`
+	// Maloja sets Origin to the name of the API key
+	// prefixed with "client:"
+	Origin string `json:"origin"`
+	Track  Track  `json:"track"`
+}
+
+type Track struct {
+	Title   string   `json:"title"`
+	Artists []string `json:"artists"`
+	Album   Album    `json:"album"`
+	Length  int64    `json:"length"`
+}
+
+type Album struct {
+	Title   string   `json:"albumtitle"`
+	Artists []string `json:"artists"`
+}
+
+type Pagination struct {
+	Page     int    `json:"page"`
+	PerPage  int    `json:"perpage"`
+	NextPage string `json:"next_page"`
+	PrevPage string `json:"prev_page"`
+}

backends/models.go

@@ -52,7 +52,7 @@ func (t Track) ArtistName() string {
 
 type Listen struct {
 	Track
-	ListenedAt     time.Time
+	ListenedAt       time.Time
-	ListenDuration time.Duration
+	PlaybackDuration time.Duration
-	UserName       string
+	UserName         string
 }