package httpcall

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

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

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

// SendTemperatures remote servers
func SendTemperatures(temperatures []*stypes.Temperature, configDir string) error {

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

	temperaturesAsBytes, err := json.Marshal(temperatures)
	if err != nil {
		return fmt.Errorf("Can not marshal temperatures to JSON: %v", err)
	}

	temperaturesAsReader := bytes.NewReader(temperaturesAsBytes)

	for _, remote := range cnf.Remotes {
		requestURL := fmt.Sprintf("%s%s", remote.Address, "/temperatures")
		req, err := http.NewRequest("POST", requestURL, temperaturesAsReader)
		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

}