Move all backends into backend directory

backend/yandex/api/disk_info_request.go

@@ -0,0 +1,48 @@
+package src
+
+import "encoding/json"
+
+//DiskInfoRequest type
+type DiskInfoRequest struct {
+	client      *Client
+	HTTPRequest *HTTPRequest
+}
+
+func (req *DiskInfoRequest) request() *HTTPRequest {
+	return req.HTTPRequest
+}
+
+//DiskInfoResponse struct is returned by the API for DiskInfo request.
+type DiskInfoResponse struct {
+	TrashSize     uint64            `json:"TrashSize"`
+	TotalSpace    uint64            `json:"TotalSpace"`
+	UsedSpace     uint64            `json:"UsedSpace"`
+	SystemFolders map[string]string `json:"SystemFolders"`
+}
+
+//NewDiskInfoRequest create new DiskInfo Request
+func (c *Client) NewDiskInfoRequest() *DiskInfoRequest {
+	return &DiskInfoRequest{
+		client:      c,
+		HTTPRequest: createGetRequest(c, "/", nil),
+	}
+}
+
+//Exec run DiskInfo Request
+func (req *DiskInfoRequest) Exec() (*DiskInfoResponse, error) {
+	data, err := req.request().run(req.client)
+	if err != nil {
+		return nil, err
+	}
+
+	var info DiskInfoResponse
+	err = json.Unmarshal(data, &info)
+	if err != nil {
+		return nil, err
+	}
+	if info.SystemFolders == nil {
+		info.SystemFolders = make(map[string]string)
+	}
+
+	return &info, nil
+}