package httpcall

import (
	"bytes"
	"fmt"
	"io/ioutil"
	"net/http"

	stypes "git.cryptic.systems/fh-trier/go-flucky-server/pkg/types"
	"git.cryptic.systems/fh-trier/go-flucky/pkg/config"
)

// RegisterDevice ..
func RegisterDevice(configDir string, force bool) error {
	con, err := config.Read(configDir)
	if err != nil {
		return err
	}

	device := new(stypes.Device)
	device.DeviceID = con.DeviceID

	var buffer bytes.Buffer
	device.EncodeToJSON(&buffer)

	for _, remote := range con.Remotes {
		if !remote.Registered || force {
			requestURL := fmt.Sprintf("%s%s", remote.Address, "/devices")
			req, err := http.NewRequest("POST", requestURL, &buffer)
			if err != nil {
				return err
			}

			client := http.Client{}
			resp, err := client.Do(req)
			if err != nil {
				return err
			}
			defer resp.Body.Close()

			if resp.StatusCode < 200 || resp.StatusCode > 299 {
				b, err := ioutil.ReadAll(resp.Body)
				if err != nil {
					return fmt.Errorf("Invalid HTTP-Statuscode - expected 200, got %d - can not read response body: %v", resp.StatusCode, err)
				}
				return fmt.Errorf("Invalid HTTP-Statuscode - expected 200, got %d: %v", resp.StatusCode, string(b))
			}
			remote.Registered = true
		}
	}

	if err := config.Write(con, configDir); err != nil {
		return err
	}

	return nil
}

// UnregisterDevice ...
func UnregisterDevice(configDir string) error {

	return nil
}