Add authenticated endpoint for deleting a word varnamproject#21

http_handlers.go

@@ -359,6 +359,29 @@ func handleTrainBulk(c echo.Context) error {
 	return c.JSON(200, "Words Trained")
 }
 
+// Delete a word
+func handleDelete(c echo.Context) error {
+	var (
+		a args
+
+		app = c.Get("app").(*App)
+	)
+
+	c.Request().Header.Set("Content-Type", "application/json")
+
+	if err := c.Bind(&a); err != nil {
+		app.log.Printf("error in binding request details for delete, err: %s", err.Error())
+		return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("error getting metadata. message: %s", err.Error()))
+	}
+
+	_, err := deleteWord(a.LangCode, a.Text)
+	if err != nil {
+		return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("error: %s", err.Error()))
+	}
+
+	return c.JSON(http.StatusOK, "success")
+}
+
 func toggleDownloadEnabledStatus(langCode string, status bool) (interface{}, error) {
 	if err := varnamdConfig.setDownloadStatus(langCode, status); err != nil {
 		return nil, err

libvarnam/libvarnam.go

@@ -180,6 +180,19 @@ func (v *Varnam) Learn(text string) error {
 	return nil
 }
 
+// Learn from given input text.
+func (v *Varnam) DeleteWord(text string) error {
+	rc := C.varnam_delete_word(v.handle, C.CString(text))
+
+	if rc != 0 {
+		errorCode := (int)(rc)
+
+		return &VarnamError{errorCode: errorCode, message: v.getVarnamError(errorCode)}
+	}
+
+	return nil
+}
+
 func (v *Varnam) getVarnamError(errorCode int) string {
 	errormessage := C.varnam_get_last_error(v.handle)
 	varnamErrorMsg := C.GoString(errormessage)

server.go

@@ -34,12 +34,14 @@ func initHandlers(app *App, enableInternalApis bool) *echo.Echo {
 	e.GET("/rtl/:langCode/:word", handleReverseTransliteration)
 	e.GET("/meta/:langCode:", handleMetadata)
 	e.GET("/download/:langCode/:downloadStart", handleDownload)
-	e.POST("/learn", handleLearn)
 	e.GET("/languages", handleLanguages)
 	e.GET("/languages/:langCode/download", handleLanguageDownload)
 	e.GET("/status", handleStatus)
+
+	e.POST("/learn", handleLearn)
 	e.POST("/train/:langCode", authUser(handleTrain))
 	e.POST("/train/bulk/:langCode", authUser(handleTrainBulk))
+	e.POST("/delete", authUser(handleDelete))
 
 	e.GET("/", handleIndex)
 

varnam_handlers.go

@@ -182,3 +182,9 @@ func getSchemeFilePath(schemeIdentifier string) (interface{}, error) {
 		return handle.GetSchemeFilePath(), nil
 	})
 }
+
+func deleteWord(schemeIdentifier string, word string) (interface{}, error) {
+	return getOrCreateHandler(schemeIdentifier, func(handle *libvarnam.Varnam) (data interface{}, err error) {
+		return nil, handle.DeleteWord(word)
+	})
+}