feat(thunder): add offline download tool (#7673)

* feat(thunder): add offline download tool

* fix(thunder): improve error handling and parse file size in status response

---------

Co-authored-by: Andy Hsu <i@nn.ci>

drivers/thunder/driver.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"net/http"
+	"strconv"
 	"strings"
 
 	"github.com/alist-org/alist/v3/drivers/base"
@@ -522,3 +523,63 @@ func (xc *XunLeiCommon) IsLogin() bool {
 	_, err := xc.Request(XLUSER_API_URL+"/user/me", http.MethodGet, nil, nil)
 	return err == nil
 }
+
+// 离线下载文件
+func (xc *XunLeiCommon) OfflineDownload(ctx context.Context, fileUrl string, parentDir model.Obj, fileName string) (*OfflineTask, error) {
+	var resp OfflineDownloadResp
+	_, err := xc.Request(FILE_API_URL, http.MethodPost, func(r *resty.Request) {
+		r.SetContext(ctx)
+		r.SetBody(&base.Json{
+			"kind":        FILE,
+			"name":        fileName,
+			"parent_id":   parentDir.GetID(),
+			"upload_type": UPLOAD_TYPE_URL,
+			"url": base.Json{
+				"url": fileUrl,
+			},
+		})
+	}, &resp)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &resp.Task, err
+}
+
+/*
+获取离线下载任务列表
+*/
+func (xc *XunLeiCommon) OfflineList(ctx context.Context, nextPageToken string) ([]OfflineTask, error) {
+	res := make([]OfflineTask, 0)
+
+	var resp OfflineListResp
+	_, err := xc.Request(TASK_API_URL, http.MethodGet, func(req *resty.Request) {
+		req.SetContext(ctx).
+			SetQueryParams(map[string]string{
+				"type":       "offline",
+				"limit":      "10000",
+				"page_token": nextPageToken,
+			})
+	}, &resp)
+
+	if err != nil {
+		return nil, fmt.Errorf("failed to get offline list: %w", err)
+	}
+	res = append(res, resp.Tasks...)
+	return res, nil
+}
+
+func (xc *XunLeiCommon) DeleteOfflineTasks(ctx context.Context, taskIDs []string, deleteFiles bool) error {
+	_, err := xc.Request(TASK_API_URL, http.MethodDelete, func(req *resty.Request) {
+		req.SetContext(ctx).
+			SetQueryParams(map[string]string{
+				"task_ids":     strings.Join(taskIDs, ","),
+				"delete_files": strconv.FormatBool(deleteFiles),
+			})
+	}, nil)
+	if err != nil {
+		return fmt.Errorf("failed to delete tasks %v: %w", taskIDs, err)
+	}
+	return nil
+}