package httpcall

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

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

// SyncSensors ..
func SyncSensors(configDir string, force bool) error {

	// read config
	cnf, err := config.Read(configDir)
	if err != nil {
		return err
	}

	// send array of sensors to remote links
	for _, remote := range cnf.Remotes {
		if remote.Enabled || force {

			// encode to json
			sensorsAsBytes, err := json.Marshal(cnf.Sensors)
			if err != nil {
				return err
			}

			sensorsAsReader := bytes.NewReader(sensorsAsBytes)

			requestURL := fmt.Sprintf("%v/sensors", remote.Address)
			req, err := http.NewRequest("PUT", requestURL, sensorsAsReader)
			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))
			}

		}

	}

	return nil
}