feat(123): thumbnail support (#3953)

drivers/123/types.go

@@ -1,7 +1,10 @@
 package _123
 
 import (
+	"net/url"
+	"path"
 	"strconv"
+	"strings"
 	"time"
 
 	"github.com/alist-org/alist/v3/internal/model"
@@ -42,7 +45,30 @@ func (f File) GetID() string {
 	return strconv.FormatInt(f.FileId, 10)
 }
 
+func (f File) Thumb() string {
+	if f.DownloadUrl == "" {
+		return ""
+	}
+	du, err := url.Parse(f.DownloadUrl)
+	if err != nil {
+		return ""
+	}
+	du.Path = strings.TrimSuffix(du.Path, "_24_24") + "_70_70"
+	query := du.Query()
+	query.Set("w", "70")
+	query.Set("h", "70")
+	if !query.Has("type") {
+		query.Set("type", strings.TrimPrefix(path.Base(f.FileName), "."))
+	}
+	if !query.Has("trade_key") {
+		query.Set("trade_key", "123pan-thumbnail")
+	}
+	du.RawQuery = query.Encode()
+	return du.String()
+}
+
 var _ model.Obj = (*File)(nil)
+var _ model.Thumb = (*File)(nil)
 
 //func (f File) Thumb() string {
 //