package sdApi4

import (
	"bytes"
	"net/http"
	"strconv"
)

var (
	apiKey string
)

// example is here: https://devel.mephi.ru/dyokunev/cps-api/src/bf961a7c6732fd3bc146d260b22848d4263ebe3f/app/init.go#L302
func SetApiKey(newApiKey string) {
	apiKey = newApiKey
}

func getPhoto(parameterName, parameterValue string) ([]byte, error) {
	client := &http.Client{}

	req, _ := http.NewRequest("GET", "https://sd.mephi.ru/api/4/get_photo.jpeg", nil)
	q := req.URL.Query()
	q.Add("api_key", apiKey)
	q.Add(parameterName, parameterValue)
	req.URL.RawQuery = q.Encode()
	response, err := client.Do(req)
	if err != nil {
		return nil, err
	}
	defer response.Body.Close()

	var bytesArray []byte

	buf := bytes.NewBuffer(bytesArray)
	_, err = buf.ReadFrom(response.Body)
	if err != nil {
		return nil, err
	}

	return buf.Bytes(), nil
}

// example is here: https://devel.mephi.ru/dyokunev/cps-api/src/bf961a7c6732fd3bc146d260b22848d4263ebe3f/app/controllers/people.go#L92
func GetPhoto(personId int) ([]byte, error) {
	return getPhoto("person_id", strconv.Itoa(personId))
}

func GetPhotoByEmpGUID(empGUID int) ([]byte, error) {
	return getPhoto("e_id", strconv.Itoa(empGUID))
}