/
dbrt.go
164 lines (143 loc) · 3.92 KB
/
dbrt.go
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package dbrt
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"mime/multipart"
"net/http"
"strconv"
"strings"
)
const baseURL string = "https://www.dbrt.hu/sources/process/meroallas_ajax.php"
type fizkodResponse struct {
MerokSzama int `json:"merok_szama"`
Message string `json:"message"`
Merok struct {
Mero1 mero `json:"1"`
} `json:"mero"`
Fizkod string `json:"fizkod"`
Hiba string `json:"hiba"`
Diktalhat string `json:"diktalhat"`
}
type mero struct {
GyariSzam string `json:"gyariSzam"`
MhKod string `json:"mhKod"`
AktualisMeroallas string `json:"aktualisMeroallas"`
ElozoMeroallas string `json:"elozoMeroallas"`
ElozoDatum string `json:"elozoDatum"`
}
func fizkodCall(fizkod string) (fizkodResponse, error) {
var fizkodResp fizkodResponse
payload := strings.NewReader(fmt.Sprintf("fizkod=%s&action=fizkod", fizkod))
req, err := http.NewRequest(http.MethodPost, baseURL, payload)
if err != nil {
return fizkodResp, err
}
req.Header.Set("Accept", "application/json")
req.Header.Set("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8")
resp, err := http.DefaultClient.Do(req)
if err != nil {
return fizkodResp, err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return fizkodResp, fmt.Errorf("bad status: %s", resp.Status)
}
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return fizkodResp, err
}
if string(body) == "null" {
return fizkodResp, fmt.Errorf("invalid fizkod: %s", fizkod)
}
err = json.Unmarshal(body, &fizkodResp)
return fizkodResp, err
}
type meroallasResponse struct {
Result struct {
Mero1 struct {
Hiba string `json:"hiba"`
Figy string `json:"figy"`
MeroallasElfogadva string `json:"meroallasElfogadva"`
Message string `json:"message"`
} `json:"1"`
} `json:"result"`
}
func meroallasCall(formdata map[string][]byte) error {
var b bytes.Buffer
w := multipart.NewWriter(&b)
for key, r := range formdata {
fw, err := w.CreateFormField(key)
if err != nil {
return err
}
_, err = fw.Write(r)
if err != nil {
return err
}
}
w.Close()
req, err := http.NewRequest("POST", baseURL, &b)
if err != nil {
return err
}
req.Header.Set("Content-Type", w.FormDataContentType())
resp, err := http.DefaultClient.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return fmt.Errorf("bad status: %s", resp.Status)
}
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
var meroallasResp meroallasResponse
err = json.Unmarshal(body, &meroallasResp)
if err != nil {
return err
}
if meroallasResp.Result.Mero1.MeroallasElfogadva != "true" {
return fmt.Errorf("reading wasn't accepted; warning: %s; error: %s; message: %s",
meroallasResp.Result.Mero1.Figy,
meroallasResp.Result.Mero1.Hiba,
meroallasResp.Result.Mero1.Message,
)
}
return nil
}
func ReportMeterReading(fizkod string, reading int) error {
fizkodResp, err := fizkodCall(fizkod)
if err != nil {
return err
}
if fizkodResp.Diktalhat != "true" {
message := strings.TrimPrefix(fizkodResp.Message, "<span class=\"fail\">")
message = strings.TrimSuffix(message, "</span>")
return fmt.Errorf(message)
}
formdata := map[string][]byte{
"action": []byte("meroallas"),
"merok_szama": []byte(strconv.Itoa(fizkodResp.MerokSzama)),
"fizkod": []byte(fizkod),
"gyariSzam_1": []byte(fizkodResp.Merok.Mero1.GyariSzam),
"elozoMeroallas_1": []byte(fizkodResp.Merok.Mero1.ElozoMeroallas),
"mhKod_1": []byte(fizkodResp.Merok.Mero1.MhKod),
"meroallas_1": []byte(strconv.Itoa(reading)),
}
err = meroallasCall(formdata)
if err != nil {
return err
}
fizkodResp, err = fizkodCall(fizkod)
if err != nil {
return err
}
if fizkodResp.Merok.Mero1.AktualisMeroallas != strconv.Itoa(reading) {
return fmt.Errorf("reading wasn't updated")
}
return nil
}