mirror of
https://git.sr.ht/~phw/scotty
synced 2025-04-10 23:49:28 +02:00
136 lines
3.3 KiB
Go
136 lines
3.3 KiB
Go
/*
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Copyright © 2023 Philipp Wolfer <phw@uploadedlobster.com>
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This file is part of Scotty.
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Scotty is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later version.
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Scotty is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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Scotty. If not, see <https://www.gnu.org/licenses/>.
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*/
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package scrobblerlog
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import (
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"bufio"
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"os"
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"sort"
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"time"
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"github.com/spf13/viper"
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"go.uploadedlobster.com/scotty/models"
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)
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type ScrobblerLogBackend struct {
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filePath string
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includeSkipped bool
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append bool
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file *os.File
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log ScrobblerLog
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}
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func (b *ScrobblerLogBackend) Name() string { return "scrobbler-log" }
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func (b *ScrobblerLogBackend) FromConfig(config *viper.Viper) models.Backend {
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b.filePath = config.GetString("file-path")
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b.includeSkipped = config.GetBool("include-skipped")
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b.append = true
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if config.IsSet("append") {
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b.append = config.GetBool("append")
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}
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b.log = ScrobblerLog{
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Timezone: "UNKNOWN",
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Client: "Rockbox unknown $Revision$",
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}
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return b
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}
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func (b *ScrobblerLogBackend) StartImport() error {
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flags := os.O_RDWR | os.O_CREATE
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if !b.append {
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flags |= os.O_TRUNC
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}
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file, err := os.OpenFile(b.filePath, flags, 0666)
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if err != nil {
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return err
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}
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if b.append {
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stat, err := file.Stat()
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if err != nil {
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file.Close()
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return err
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}
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if stat.Size() == 0 {
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// Zero length file, treat as a new file
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b.append = false
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} else {
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// Verify existing file is a scrobbler log
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reader := bufio.NewReader(file)
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err = ReadHeader(reader, &b.log)
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if err != nil {
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file.Close()
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return err
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}
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file.Seek(0, 2)
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}
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}
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if !b.append {
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err = WriteHeader(file, &b.log)
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if err != nil {
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file.Close()
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return err
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}
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}
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b.file = file
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return nil
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}
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func (b *ScrobblerLogBackend) FinishImport() error {
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return b.file.Close()
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}
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func (b *ScrobblerLogBackend) ExportListens(oldestTimestamp time.Time, results chan models.ListensResult, progress chan models.Progress) {
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defer close(results)
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defer close(progress)
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file, err := os.Open(b.filePath)
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if err != nil {
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results <- models.ListensResult{Error: err}
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return
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}
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defer file.Close()
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log, err := Parse(file, b.includeSkipped)
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if err != nil {
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results <- models.ListensResult{Error: err}
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close(results)
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return
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}
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listens := log.Listens.NewerThan(oldestTimestamp)
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sort.Sort(listens)
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progress <- models.Progress{Elapsed: int64(len(listens))}.Complete()
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results <- models.ListensResult{Listens: listens}
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}
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func (b *ScrobblerLogBackend) ImportListens(export models.ListensResult, importResult models.ImportResult, progress chan models.Progress) (models.ImportResult, error) {
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lastTimestamp, err := Write(b.file, export.Listens)
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if err != nil {
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return importResult, err
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}
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importResult.UpdateTimestamp(lastTimestamp)
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importResult.ImportCount += len(export.Listens)
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progress <- models.Progress{}.FromImportResult(importResult)
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return importResult, nil
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}
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