Moved specifc backends into separate packages

backends/scrobblerlog/scrobblerlog.go

@@ -0,0 +1,87 @@
+/*
+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 scrobblerlog
+
+import (
+	"os"
+	"time"
+
+	"github.com/spf13/viper"
+	"go.uploadedlobster.com/scotty/models"
+)
+
+type ScrobblerLogBackend struct {
+	filePath       string
+	includeSkipped bool
+}
+
+func (b ScrobblerLogBackend) FromConfig(config *viper.Viper) models.Backend {
+	b.filePath = config.GetString("file-path")
+	b.includeSkipped = config.GetBool("include-skipped")
+	return b
+}
+
+func (b ScrobblerLogBackend) ExportListens(oldestTimestamp time.Time) ([]models.Listen, error) {
+	file, err := os.Open(b.filePath)
+	if err != nil {
+		return nil, err
+	}
+
+	defer file.Close()
+
+	result, err := Parse(file, b.includeSkipped)
+	if err != nil {
+		return nil, err
+	}
+
+	return result.Listens, nil
+}
+
+func (b ScrobblerLogBackend) ImportListens(listens []models.Listen, oldestTimestamp time.Time) (models.ImportResult, error) {
+	result := models.ImportResult{
+		Count:         0,
+		LastTimestamp: oldestTimestamp,
+	}
+
+	file, err := os.Create(b.filePath)
+	if err != nil {
+		return result, err
+	}
+
+	defer file.Close()
+
+	log := ScrobblerLog{
+		Timezone: "UNKNOWN",
+		Client:   "Rockbox unknown $Revision$",
+		Listens:  listens,
+	}
+
+	lastTimestamp, err := Write(file, &log)
+
+	if err != nil {
+		return result, err
+	}
+
+	result.LastTimestamp = lastTimestamp
+	result.Count = len(listens)
+	return result, nil
+}