98 lines
1.5 KiB
Go
98 lines
1.5 KiB
Go
package client
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import (
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"fmt"
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"image"
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"image/jpeg"
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"os"
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"path"
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)
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type artcache struct {
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artPaths map[string]string
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cacheDir string
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}
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var ArtCache *artcache
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func (c *artcache) saveArt(id string, img image.Image) *string {
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path := c.GetPath(id)
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if path != nil {
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return path
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}
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path = c.saveImage(id, img)
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if path != nil {
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c.artPaths[id] = *path
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}
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return path
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}
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func (c *artcache) saveImage(id string, img image.Image) *string {
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filePath := c.filepath(id)
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f, err := os.Create(filePath)
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defer func() {
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_ = f.Close()
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}()
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if err != nil {
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return nil
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}
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err = jpeg.Encode(f, img, nil)
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if err != nil {
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return nil
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}
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return &filePath
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}
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func (c *artcache) GetPath(id string) *string {
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if path, ok := c.artPaths[id]; ok {
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return &path
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}
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return nil
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}
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func (c *artcache) GetImage(id string) *image.Image {
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path := c.GetPath(id)
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if path == nil {
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return nil
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}
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f, err := os.Open(*path)
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if err != nil {
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return nil
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}
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defer func() {
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_ = f.Close()
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}()
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img, err := jpeg.Decode(f)
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if err != nil {
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return nil
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}
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return &img
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}
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func (c *artcache) filepath(id string) string {
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return path.Join(c.cacheDir, fmt.Sprintf("%s.jpg", id))
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}
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func (c *artcache) Destroy() {
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os.RemoveAll(c.cacheDir)
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}
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func init() {
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tmpDir := os.TempDir()
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cacheDir := path.Join(tmpDir, fmt.Sprintf("subsonic-tui-%d", os.Getpid()))
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err := os.Mkdir(cacheDir, 0777)
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if err != nil {
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panic("Failed to create cacheDir")
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}
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ArtCache = &artcache{
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cacheDir: cacheDir,
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artPaths: make(map[string]string),
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}
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}
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