reveil/model/gong.go

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package reveil
import (
"crypto/sha512"
"io/fs"
"os"
"path/filepath"
"strings"
"git.nemunai.re/nemunaire/reveil/config"
)
const CURRENT_GONG = "_current_gong"
type Gong struct {
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Id Identifier `json:"id"`
Name string `json:"name"`
Path string `json:"path"`
Enabled bool `json:"enabled"`
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}
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func CurrentGongPath(cfg *config.Config) string {
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return filepath.Join(cfg.GongsDir, CURRENT_GONG)
}
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func LoadGong(cfg *config.Config, path string, d fs.FileInfo) (gong *Gong, err error) {
// Retrieve the path of the current gong
current_gong, err := os.Readlink(CurrentGongPath(cfg))
if err == nil {
current_gong, _ = filepath.Abs(filepath.Join(cfg.GongsDir, current_gong))
}
hash := sha512.Sum512([]byte(path))
pabs, _ := filepath.Abs(path)
return &Gong{
Id: hash[:],
Name: strings.TrimSuffix(d.Name(), filepath.Ext(d.Name())),
Path: path,
Enabled: current_gong == pabs,
}, nil
}
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func LoadGongs(cfg *config.Config) (gongs []*Gong, err error) {
// Retrieve the path of the current gong
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current_gong, err := os.Readlink(CurrentGongPath(cfg))
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if err == nil {
current_gong, _ = filepath.Abs(filepath.Join(cfg.GongsDir, current_gong))
}
// Retrieve the list
err = filepath.Walk(cfg.GongsDir, func(path string, d fs.FileInfo, err error) error {
if d.Mode().IsRegular() {
hash := sha512.Sum512([]byte(path))
pabs, _ := filepath.Abs(path)
gongs = append(gongs, &Gong{
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Id: hash[:],
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Name: strings.TrimSuffix(d.Name(), filepath.Ext(d.Name())),
Path: path,
Enabled: current_gong == pabs,
})
}
return nil
})
return
}
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func (g *Gong) Open() (*os.File, error) {
return os.Open(g.Path)
}
func (g *Gong) Size() (int64, error) {
if st, err := os.Stat(g.Path); err != nil {
return 0, err
} else {
return st.Size(), err
}
}
func (g *Gong) ContentType() string {
switch filepath.Ext(g.Path) {
case ".flac":
return "audio/flac"
case ".mp3":
return "audio/mpeg"
case ".ogg":
return "audio/ogg"
case ".wav":
return "audio/vnd.wav"
}
return "application/octet-stream"
}
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func (g *Gong) Rename(newName string) error {
newPath := filepath.Join(filepath.Dir(g.Path), newName+filepath.Ext(g.Path))
err := os.Rename(
g.Path,
newPath,
)
if err != nil {
return err
}
g.Path = newPath
return nil
}
func (g *Gong) SetDefault(cfg *config.Config) error {
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linkpath := CurrentGongPath(cfg)
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os.Remove(linkpath)
pabs, err := filepath.Abs(g.Path)
if err != nil {
pabs = g.Path
}
gdirabs, err := filepath.Abs(cfg.GongsDir)
if err != nil {
gdirabs = cfg.GongsDir
}
return os.Symlink(strings.TrimPrefix(strings.TrimPrefix(pabs, gdirabs), "/"), linkpath)
}
func (g *Gong) Remove() error {
return os.Remove(g.Path)
}