1 files changed, 213 insertions, 0 deletions
diff --git a/lib/xdsserver/folder-st.go b/lib/xdsserver/folder-st.go
new file mode 100644
index 0000000..04bbf76
--- /dev/null
+++ b/lib/xdsserver/folder-st.go
@@ -0,0 +1,213 @@
+package xdsserver
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/iotbzh/xds-server/lib/xsapiv1"
+	st "github.com/iotbzh/xds-server/lib/syncthing"
+	uuid "github.com/satori/go.uuid"
+	"github.com/syncthing/syncthing/lib/config"
+)
+
+// IFOLDER interface implementation for syncthing
+
+// STFolder .
+type STFolder struct {
+	*Context
+	st                *st.SyncThing
+	fConfig           xsapiv1.FolderConfig
+	stfConfig         config.FolderConfiguration
+	eventIDs          []int
+	eventChangeCB     *FolderEventCB
+	eventChangeCBData *FolderEventCBData
+}
+
+// NewFolderST Create a new instance of STFolder
+func NewFolderST(ctx *Context, sthg *st.SyncThing) *STFolder {
+	return &STFolder{
+		Context: ctx,
+		st:      sthg,
+	}
+}
+
+// NewUID Get a UUID
+func (f *STFolder) NewUID(suffix string) string {
+	i := len(f.st.MyID)
+	if i > 15 {
+		i = 15
+	}
+	uuid := uuid.NewV1().String()[:14] + f.st.MyID[:i]
+	if len(suffix) > 0 {
+		uuid += "_" + suffix
+	}
+	return uuid
+}
+
+// Add a new folder
+func (f *STFolder) Add(cfg xsapiv1.FolderConfig) (*xsapiv1.FolderConfig, error) {
+
+	// Sanity check
+	if cfg.DataCloudSync.SyncThingID == "" {
+		return nil, fmt.Errorf("device id not set (SyncThingID field)")
+	}
+
+	// rootPath should not be empty
+	if cfg.RootPath == "" {
+		cfg.RootPath = f.Config.FileConf.ShareRootDir
+	}
+
+	f.fConfig = cfg
+
+	// Update Syncthing folder
+	// (except if status is ErrorConfig)
+	// TODO: add cache to avoid multiple requests on startup
+	if f.fConfig.Status != xsapiv1.StatusErrorConfig {
+		id, err := f.st.FolderChange(f.fConfig)
+		if err != nil {
+			return nil, err
+		}
+
+		f.stfConfig, err = f.st.FolderConfigGet(id)
+		if err != nil {
+			f.fConfig.Status = xsapiv1.StatusErrorConfig
+			return nil, err
+		}
+
+		// Register to events to update folder status
+		for _, evName := range []string{st.EventStateChanged, st.EventFolderPaused} {
+			evID, err := f.st.Events.Register(evName, f.cbEventState, id, nil)
+			if err != nil {
+				return nil, err
+			}
+			f.eventIDs = append(f.eventIDs, evID)
+		}
+
+		f.fConfig.IsInSync = false // will be updated later by events
+		f.fConfig.Status = xsapiv1.StatusEnable
+	}
+
+	return &f.fConfig, nil
+}
+
+// GetConfig Get public part of folder config
+func (f *STFolder) GetConfig() xsapiv1.FolderConfig {
+	return f.fConfig
+}
+
+// GetFullPath returns the full path of a directory (from server POV)
+func (f *STFolder) GetFullPath(dir string) string {
+	if &dir == nil {
+		dir = ""
+	}
+	if filepath.IsAbs(dir) {
+		return filepath.Join(f.fConfig.RootPath, dir)
+	}
+	return filepath.Join(f.fConfig.RootPath, f.fConfig.ClientPath, dir)
+}
+
+// ConvPathCli2Svr Convert path from Client to Server
+func (f *STFolder) ConvPathCli2Svr(s string) string {
+	if f.fConfig.ClientPath != "" && f.fConfig.RootPath != "" {
+		return strings.Replace(s,
+			f.fConfig.ClientPath,
+			f.fConfig.RootPath+"/"+f.fConfig.ClientPath,
+			-1)
+	}
+	return s
+}
+
+// ConvPathSvr2Cli Convert path from Server to Client
+func (f *STFolder) ConvPathSvr2Cli(s string) string {
+	if f.fConfig.ClientPath != "" && f.fConfig.RootPath != "" {
+		return strings.Replace(s,
+			f.fConfig.RootPath+"/"+f.fConfig.ClientPath,
+			f.fConfig.ClientPath,
+			-1)
+	}
+	return s
+}
+
+// Remove a folder
+func (f *STFolder) Remove() error {
+	err := f.st.FolderDelete(f.stfConfig.ID)
+
+	// Delete folder on server side
+	err2 := os.RemoveAll(f.GetFullPath(""))
+
+	if err != nil {
+		return err
+	}
+	return err2
+}
+
+// Update update some fields of a folder
+func (f *STFolder) Update(cfg xsapiv1.FolderConfig) (*xsapiv1.FolderConfig, error) {
+	if f.fConfig.ID != cfg.ID {
+		return nil, fmt.Errorf("Invalid id")
+	}
+	f.fConfig = cfg
+	return &f.fConfig, nil
+}
+
+// RegisterEventChange requests registration for folder event change
+func (f *STFolder) RegisterEventChange(cb *FolderEventCB, data *FolderEventCBData) error {
+	f.eventChangeCB = cb
+	f.eventChangeCBData = data
+	return nil
+}
+
+// UnRegisterEventChange remove registered callback
+func (f *STFolder) UnRegisterEventChange() error {
+	f.eventChangeCB = nil
+	f.eventChangeCBData = nil
+	return nil
+}
+
+// Sync Force folder files synchronization
+func (f *STFolder) Sync() error {
+	return f.st.FolderScan(f.stfConfig.ID, "")
+}
+
+// IsInSync Check if folder files are in-sync
+func (f *STFolder) IsInSync() (bool, error) {
+	sts, err := f.st.IsFolderInSync(f.stfConfig.ID)
+	if err != nil {
+		return false, err
+	}
+	f.fConfig.IsInSync = sts
+	return sts, nil
+}
+
+// callback use to update IsInSync status
+func (f *STFolder) cbEventState(ev st.Event, data *st.EventsCBData) {
+	prevSync := f.fConfig.IsInSync
+	prevStatus := f.fConfig.Status
+
+	switch ev.Type {
+
+	case st.EventStateChanged:
+		to := ev.Data["to"]
+		switch to {
+		case "scanning", "syncing":
+			f.fConfig.Status = xsapiv1.StatusSyncing
+		case "idle":
+			f.fConfig.Status = xsapiv1.StatusEnable
+		}
+		f.fConfig.IsInSync = (to == "idle")
+
+	case st.EventFolderPaused:
+		if f.fConfig.Status == xsapiv1.StatusEnable {
+			f.fConfig.Status = xsapiv1.StatusPause
+		}
+		f.fConfig.IsInSync = false
+	}
+
+	if f.eventChangeCB != nil &&
+		(prevSync != f.fConfig.IsInSync || prevStatus != f.fConfig.Status) {
+		cpConf := f.fConfig
+		(*f.eventChangeCB)(&cpConf, f.eventChangeCBData)
+	}
+}