2 files changed, 192 insertions, 0 deletions
diff --git a/lib/syncthing/st.go b/lib/syncthing/st.go
new file mode 100644
index 0000000..7d07b70
--- /dev/null
+++ b/lib/syncthing/st.go
@@ -0,0 +1,76 @@
+package st
+
+import (
+	"encoding/json"
+
+	"strings"
+
+	"fmt"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/iotbzh/xds-server/lib/common"
+	"github.com/syncthing/syncthing/lib/config"
+)
+
+// SyncThing .
+type SyncThing struct {
+	BaseURL string
+	client  *common.HTTPClient
+	log     *logrus.Logger
+}
+
+// NewSyncThing creates a new instance of Syncthing
+func NewSyncThing(url string, apikey string, log *logrus.Logger) *SyncThing {
+	cl, err := common.HTTPNewClient(url,
+		common.HTTPClientConfig{
+			URLPrefix:           "/rest",
+			HeaderClientKeyName: "X-Syncthing-ID",
+		})
+	if err != nil {
+		msg := ": " + err.Error()
+		if strings.Contains(err.Error(), "connection refused") {
+			msg = fmt.Sprintf("(url: %s)", url)
+		}
+		log.Debugf("ERROR: cannot connect to Syncthing %s", msg)
+		return nil
+	}
+
+	s := SyncThing{
+		BaseURL: url,
+		client:  cl,
+		log:     log,
+	}
+
+	return &s
+}
+
+// IDGet returns the Syncthing ID of Syncthing instance running locally
+func (s *SyncThing) IDGet() (string, error) {
+	var data []byte
+	if err := s.client.HTTPGet("system/status", &data); err != nil {
+		return "", err
+	}
+	status := make(map[string]interface{})
+	json.Unmarshal(data, &status)
+	return status["myID"].(string), nil
+}
+
+// ConfigGet returns the current Syncthing configuration
+func (s *SyncThing) ConfigGet() (config.Configuration, error) {
+	var data []byte
+	config := config.Configuration{}
+	if err := s.client.HTTPGet("system/config", &data); err != nil {
+		return config, err
+	}
+	err := json.Unmarshal(data, &config)
+	return config, err
+}
+
+// ConfigSet set Syncthing configuration
+func (s *SyncThing) ConfigSet(cfg config.Configuration) error {
+	body, err := json.Marshal(cfg)
+	if err != nil {
+		return err
+	}
+	return s.client.HTTPPost("system/config", string(body))
+}
diff --git a/lib/syncthing/stfolder.go b/lib/syncthing/stfolder.go
new file mode 100644
index 0000000..d79e579
--- /dev/null
+++ b/lib/syncthing/stfolder.go
@@ -0,0 +1,116 @@
+package st
+
+import (
+	"path/filepath"
+	"strings"
+
+	"github.com/syncthing/syncthing/lib/config"
+	"github.com/syncthing/syncthing/lib/protocol"
+)
+
+// FIXME remove and use an interface on xdsconfig.FolderConfig
+type FolderChangeArg struct {
+	ID           string
+	Label        string
+	RelativePath string
+	SyncThingID  string
+	ShareRootDir string
+}
+
+// FolderChange is called when configuration has changed
+func (s *SyncThing) FolderChange(f FolderChangeArg) error {
+
+	// Get current config
+	stCfg, err := s.ConfigGet()
+	if err != nil {
+		s.log.Errorln(err)
+		return err
+	}
+
+	// Add new Device if needed
+	var devID protocol.DeviceID
+	if err := devID.UnmarshalText([]byte(f.SyncThingID)); err != nil {
+		s.log.Errorf("not a valid device id (err %v)\n", err)
+		return err
+	}
+
+	newDevice := config.DeviceConfiguration{
+		DeviceID:  devID,
+		Name:      f.SyncThingID,
+		Addresses: []string{"dynamic"},
+	}
+
+	var found = false
+	for _, device := range stCfg.Devices {
+		if device.DeviceID == devID {
+			found = true
+			break
+		}
+	}
+	if !found {
+		stCfg.Devices = append(stCfg.Devices, newDevice)
+	}
+
+	// Add or update Folder settings
+	var label, id string
+	if label = f.Label; label == "" {
+		label = strings.Split(id, "/")[0]
+	}
+	if id = f.ID; id == "" {
+		id = f.SyncThingID[0:15] + "_" + label
+	}
+
+	folder := config.FolderConfiguration{
+		ID:      id,
+		Label:   label,
+		RawPath: filepath.Join(f.ShareRootDir, f.RelativePath),
+	}
+
+	folder.Devices = append(folder.Devices, config.FolderDeviceConfiguration{
+		DeviceID: newDevice.DeviceID,
+	})
+
+	found = false
+	var fld config.FolderConfiguration
+	for _, fld = range stCfg.Folders {
+		if folder.ID == fld.ID {
+			fld = folder
+			found = true
+			break
+		}
+	}
+	if !found {
+		stCfg.Folders = append(stCfg.Folders, folder)
+		fld = stCfg.Folders[0]
+	}
+
+	err = s.ConfigSet(stCfg)
+	if err != nil {
+		s.log.Errorln(err)
+	}
+
+	return nil
+}
+
+// FolderDelete is called to delete a folder config
+func (s *SyncThing) FolderDelete(id string) error {
+	// Get current config
+	stCfg, err := s.ConfigGet()
+	if err != nil {
+		s.log.Errorln(err)
+		return err
+	}
+
+	for i, fld := range stCfg.Folders {
+		if id == fld.ID {
+			stCfg.Folders = append(stCfg.Folders[:i], stCfg.Folders[i+1:]...)
+			err = s.ConfigSet(stCfg)
+			if err != nil {
+				s.log.Errorln(err)
+				return err
+			}
+		}
+	}
+
+	return nil
+}