package migrationAPI

import (
	"errors"
	"net/http"

	"github.rackspace.com/DCM/migration/pkg/shutdown"
)

// ShutdownPrep will run the netdevice shutdown prep on a device
//
// https://migration.nsi.rackspace.com/docs/#/Prep/shutdownPrep
func (c *Client) ShutdownPrep(payload shutdown.Options, options ...*Options) (*shutdown.Response, error) {
	opts := processOptions(options...)

	req, err := c.newRequest(c.URL+"/prep/shutdown", http.MethodPost, payload, opts)
	if err != nil {
		return nil, err
	}

	var resp struct {
		Data  shutdown.Response `json:"data"`
		Error *string           `json:"error"`
	}

	if err = c.do(req, &resp, opts); err != nil {
		return nil, err
	}
	if resp.Error != nil {
		return nil, errors.New(*resp.Error)
	}
	return &resp.Data, nil
}