// RestPostFileToMci godoc
// @ID PostFileToMci
// @Summary Transfer a file to specified MCI
// @Description Transfer a file to specified MCI to the specified path.
// @Description The file size should be less than 10MB.
// @Description Not for gerneral file transfer but for specific purpose (small configuration files).
// @Tags [MC-Infra] MCI Remote Command
// @Accept  multipart/form-data
// @Produce  json
// @Param nsId path string true "Namespace ID" default(default)
// @Param mciId path string true "MCI ID" default(mci01)
// @Param subGroupId query string false "subGroupId to apply the file transfer only for VMs in subGroup of MCI" default(g1)
// @Param vmId query string false "vmId to apply the file transfer only for a VM in MCI" default(g1-1)
// @Param path formData string true "Target path where the file will be stored" default(/home/cb-user/)
// @Param file formData file true "The file to be uploaded (Max 10MB)"
// @Param x-request-id header string false "Custom request ID"
// @Success 200 {object} model.MciSshCmdResultForAPI
// @Failure 400 {object} model.SimpleMsg "Invalid request"
// @Failure 500 {object} model.SimpleMsg "Internal Server Error"
// @Router /ns/{nsId}/transferFile/mci/{mciId} [post]
func RestPostFileToMci(c echo.Context) error {

	nsId := c.Param("nsId")
	mciId := c.Param("mciId")
	subGroupId := c.QueryParam("subGroupId")
	vmId := c.QueryParam("vmId")
	targetPath := c.FormValue("path")

	if targetPath == "" {
		err := fmt.Errorf("target path is required")
		return clientManager.EndRequestWithLog(c, err, nil)
	}

	// Validate the file
	file, err := c.FormFile("file")
	if err != nil {
		err = fmt.Errorf("failed to read the file %v", err)
		return clientManager.EndRequestWithLog(c, err, nil)
	}

	// File size validation
	fileSizeLimit := int64(50 * 1024 * 1024) // (50MB limit)
	if file.Size > fileSizeLimit {
		err := fmt.Errorf("file too large, max size is %v", fileSizeLimit)
		return clientManager.EndRequestWithLog(c, err, nil)
	}