feat: support alist as a storage

pkg/storage/alist.go

@@ -0,0 +1,72 @@
+package storage
+
+import (
+	"io"
+	"io/fs"
+	"os"
+	"path/filepath"
+	"polaris/pkg/alist"
+
+	"github.com/gabriel-vasile/mimetype"
+)
+
+func NewAlist(cfg *alist.Config, dir string) (*Alist, error) {
+	cl := alist.New(cfg)
+	_, err := cl.Login()
+	if err != nil {
+		return nil, err
+	}
+	return &Alist{baseDir: dir, cfg: cfg, client: cl}, nil
+}
+
+type Alist struct {
+	baseDir    string
+	cfg        *alist.Config
+	client     *alist.Client
+	progresser func() float64
+}
+
+func (a *Alist) Move(src, dest string) error {
+	if err := a.Copy(src, dest); err != nil {
+		return err
+	}
+	return os.RemoveAll(src)
+}
+
+func (a *Alist) Copy(src, dest string) error {
+	b, err := NewBase(src)
+	if err != nil {
+		return err
+	}
+	a.progresser = b.Progress
+
+	uploadFunc := func(destPath string, destInfo fs.FileInfo, srcReader io.Reader, mimeType *mimetype.MIME) error {
+		_, err := a.client.UploadStream(srcReader, destPath)
+		return err
+	}
+	mkdirFunc := func(dir string) error {
+		return a.client.Mkdir(dir)
+	}
+
+	baseDest := filepath.Join(a.baseDir, dest)
+	return b.Upload(baseDest, false, false, false, uploadFunc, mkdirFunc)
+}
+
+func (a *Alist) ReadDir(dir string) ([]fs.FileInfo, error) {
+	return nil, nil
+}
+
+func (a *Alist) ReadFile(s string) ([]byte, error) {
+	return nil, nil
+}
+
+func (a *Alist) WriteFile(s string, bytes []byte) error {
+	return nil
+}
+
+func (a *Alist) UploadProgress() float64 {
+	if a.progresser == nil {
+		return 0
+	}
+	return a.progresser()
+}