portainer/portainer

package openamt

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

    portainer "github.com/portainer/portainer/api"

    "github.com/segmentio/encoding/json"
)

type authenticationResponse struct {
    Token string `json:"token"`
}

func (service *Service) Authorization(configuration portainer.OpenAMTConfiguration) (string, error) {
    loginURL := fmt.Sprintf("https://%s/mps/login/api/v1/authorize", configuration.MPSServer)

    payload := map[string]string{
        "username": configuration.MPSUser,
        "password": configuration.MPSPassword,
    }
    jsonValue, _ := json.Marshal(payload)

    req, err := http.NewRequest(http.MethodPost, loginURL, bytes.NewBuffer(jsonValue))
    if err != nil {
        return "", err
    }
    req.Header.Set("Content-Type", "application/json")

    response, err := service.httpsClient.Do(req)
    if err != nil {
        return "", err
    }
    defer response.Body.Close()

    responseBody, readErr := io.ReadAll(response.Body)
    if readErr != nil {
        return "", readErr
    }

    errorResponse := parseError(responseBody)
    if errorResponse != nil {
        return "", errorResponse
    }

    var token authenticationResponse
    err = json.Unmarshal(responseBody, &token)
    if err != nil {
        return "", err
    }

    return token.Token, nil
}