feat(methods): add SyncMainData and GetFreeSpaceOnDisk (#26)

* feat: GetFreeSpaceonDisk

* optimize memory usage

* optimize code further

* feat: add full maindata method incl. ServerState object

* feat(methods): add SyncMainData

---------

Co-authored-by: ze0s <[email protected]>

Author: martylukyy

domain.go

@@ -586,3 +586,43 @@ type AppPreferences struct {
 	WebUIUseCustomHTTPHeadersEnabled   bool   `json:"web_ui_use_custom_http_headers_enabled"`
 	WebUIUsername                      string `json:"web_ui_username"`
 }
+
+type MainData struct {
+	Rid               int                 `json:"rid"`
+	FullUpdate        bool                `json:"full_update"`
+	Torrents          map[string]Torrent  `json:"torrents"`
+	TorrentsRemoved   []string            `json:"torrents_removed"`
+	Categories        map[string]Category `json:"categories"`
+	CategoriesRemoved []string            `json:"categories_removed"`
+	Tags              []string            `json:"tags"`
+	TagsRemoved       []string            `json:"tags_removed"`
+	Trackers          map[string][]string `json:"trackers"`
+	ServerState       ServerState         `json:"server_state"`
+}
+
+type ServerState struct {
+	AlltimeDl            int64  `json:"alltime_dl"`
+	AlltimeUl            int64  `json:"alltime_ul"`
+	AverageTimeQueue     int    `json:"average_time_queue"`
+	ConnectionStatus     string `json:"connection_status"`
+	DhtNodes             int    `json:"dht_nodes"`
+	DlInfoData           int64  `json:"dl_info_data"`
+	DlInfoSpeed          int    `json:"dl_info_speed"`
+	DlRateLimit          int    `json:"dl_rate_limit"`
+	FreeSpaceOnDisk      uint64 `json:"free_space_on_disk"`
+	GlobalRatio          string `json:"global_ratio"`
+	QueuedIoJobs         int    `json:"queued_io_jobs"`
+	Queueing             bool   `json:"queueing"`
+	ReadCacheHits        string `json:"read_cache_hits"`
+	ReadCacheOverload    string `json:"read_cache_overload"`
+	RefreshInterval      int    `json:"refresh_interval"`
+	TotalBuffersSize     int    `json:"total_buffers_size"`
+	TotalPeerConnections int    `json:"total_peer_connections"`
+	TotalQueuedSize      int    `json:"total_queued_size"`
+	TotalWastedSession   int64  `json:"total_wasted_session"`
+	UpInfoData           int64  `json:"up_info_data"`
+	UpInfoSpeed          int    `json:"up_info_speed"`
+	UpRateLimit          int    `json:"up_rate_limit"`
+	UseAltSpeedLimits    bool   `json:"use_alt_speed_limits"`
+	WriteCacheOverload   string `json:"write_cache_overload"`
+}

methods.go

@@ -468,6 +468,27 @@ func (c *Client) GetTransferInfoCtx(ctx context.Context) (*TransferInfo, error)
 	return &info, nil
 }
 
+// SyncMainDataCtx Sync API implements requests for obtaining changes since the last request.
+// Response ID. If not provided, rid=0 will be assumed. If the given rid is different from the one of last server reply, full_update will be true (see the server reply details for more info)
+func (c *Client) SyncMainDataCtx(ctx context.Context, rid int64) (*MainData, error) {
+	opts := map[string]string{
+		"rid": strconv.FormatInt(rid, 10),
+	}
+
+	resp, err := c.getCtx(ctx, "/sync/maindata", opts)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not get main data")
+	}
+
+	var info MainData
+	if err := json.NewDecoder(resp.Body).Decode(&info); err != nil {
+		return nil, errors.Wrap(err, "could not unmarshal body")
+	}
+
+	return &info, nil
+
+}
+
 func (c *Client) Pause(hashes []string) error {
 	return c.PauseCtx(context.Background(), hashes)
 }
@@ -1267,6 +1288,20 @@ func (c *Client) GetWebAPIVersionCtx(ctx context.Context) (string, error) {
 	return string(body), nil
 }
 
+func (c *Client) GetFreeSpaceOnDisk() (uint64, error) {
+	return c.GetFreeSpaceOnDiskCtx(context.Background())
+}
+
+// GetFreeSpaceOnDiskCtx get free space on disk for default download dir. Expensive call
+func (c *Client) GetFreeSpaceOnDiskCtx(ctx context.Context) (uint64, error) {
+	info, err := c.SyncMainDataCtx(ctx, 0)
+	if err != nil {
+		return 0, errors.Wrap(err, "could not get maindata")
+	}
+
+	return info.ServerState.FreeSpaceOnDisk, nil
+}
+
 const (
 	ReannounceMaxAttempts = 50
 	ReannounceInterval    = 7 // interval in seconds