navidrome/core/playlists/parse_nsp.go

103 lines
2.4 KiB
Go

package playlists
import (
"context"
"encoding/json"
"errors"
"fmt"
"io"
"os"
"path/filepath"
"github.com/navidrome/navidrome/conf"
"github.com/navidrome/navidrome/model"
"github.com/navidrome/navidrome/model/criteria"
"github.com/navidrome/navidrome/utils/jsoncommentstrip"
)
func (s *playlists) newSyncedPlaylist(baseDir string, playlistFile string) (*model.Playlist, error) {
playlistPath := filepath.Join(baseDir, playlistFile)
info, err := os.Stat(playlistPath)
if err != nil {
return nil, err
}
var extension = filepath.Ext(playlistFile)
var name = playlistFile[0 : len(playlistFile)-len(extension)]
pls := &model.Playlist{
Name: name,
Comment: fmt.Sprintf("Auto-imported from '%s'", playlistFile),
Public: false,
Path: playlistPath,
Sync: true,
UpdatedAt: info.ModTime(),
}
return pls, nil
}
func getPositionFromOffset(data []byte, offset int64) (line, column int) {
line = 1
for _, b := range data[:offset] {
if b == '\n' {
line++
column = 1
} else {
column++
}
}
return
}
func (s *playlists) parseNSP(_ context.Context, pls *model.Playlist, reader io.Reader) error {
nsp := &nspFile{}
reader = io.LimitReader(reader, 100*1024) // Limit to 100KB
reader = jsoncommentstrip.NewReader(reader)
input, err := io.ReadAll(reader)
if err != nil {
return fmt.Errorf("reading SmartPlaylist: %w", err)
}
err = json.Unmarshal(input, nsp)
if err != nil {
var syntaxErr *json.SyntaxError
if errors.As(err, &syntaxErr) {
line, col := getPositionFromOffset(input, syntaxErr.Offset)
return fmt.Errorf("JSON syntax error in SmartPlaylist at line %d, column %d: %w", line, col, err)
}
return fmt.Errorf("JSON parsing error in SmartPlaylist: %w", err)
}
pls.Rules = &nsp.Criteria
if nsp.Name != "" {
pls.Name = nsp.Name
}
if nsp.Comment != "" {
pls.Comment = nsp.Comment
}
if nsp.Public != nil {
pls.Public = *nsp.Public
} else {
pls.Public = conf.Server.DefaultPlaylistPublicVisibility
}
return nil
}
type nspFile struct {
criteria.Criteria
Name string `json:"name"`
Comment string `json:"comment"`
Public *bool `json:"public"`
}
func (i *nspFile) UnmarshalJSON(data []byte) error {
m := map[string]any{}
err := json.Unmarshal(data, &m)
if err != nil {
return err
}
i.Name, _ = m["name"].(string)
i.Comment, _ = m["comment"].(string)
if public, ok := m["public"].(bool); ok {
i.Public = &public
}
return json.Unmarshal(data, &i.Criteria)
}