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package http
import (
"context"
"encoding/json"
"fmt"
"io"
"log"
"net/http"
"net/url"
"strings"
"time"
"github.com/zitadel/oidc/v3/pkg/oidc"
)
var DefaultHTTPClient = &http.Client{
Timeout: 30 * time.Second,
}
type Decoder interface {
Decode(dst any, src map[string][]string) error
}
type Encoder interface {
Encode(src any, dst map[string][]string) error
}
type FormAuthorization func(url.Values)
type RequestAuthorization func(*http.Request)
func AuthorizeBasic(user, password string) RequestAuthorization {
return func(req *http.Request) {
req.SetBasicAuth(url.QueryEscape(user), url.QueryEscape(password))
}
}
func FormRequest(ctx context.Context, endpoint string, request any, encoder Encoder, authFn any) (*http.Request, error) {
form := url.Values{}
if err := encoder.Encode(request, form); err != nil {
return nil, err
}
if fn, ok := authFn.(FormAuthorization); ok {
fn(form)
}
body := strings.NewReader(form.Encode())
req, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint, body)
if err != nil {
return nil, err
}
if fn, ok := authFn.(RequestAuthorization); ok {
fn(req)
}
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
return req, nil
}
func HttpRequest(client *http.Client, req *http.Request, response any) error {
resp, err := client.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
if err != nil {
return fmt.Errorf("unable to read response body: %v", err)
}
if resp.StatusCode != http.StatusOK {
var oidcErr oidc.Error
err = json.Unmarshal(body, &oidcErr)
if err != nil || oidcErr.ErrorType == "" {
return fmt.Errorf("http status not ok: %s %s", resp.Status, body)
}
return &oidcErr
}
err = json.Unmarshal(body, response)
if err != nil {
return fmt.Errorf("failed to unmarshal response: %v %s", err, body)
}
return nil
}
func URLEncodeParams(resp any, encoder Encoder) (url.Values, error) {
values := make(map[string][]string)
err := encoder.Encode(resp, values)
if err != nil {
return nil, err
}
return values, nil
}
func StartServer(ctx context.Context, port string) {
server := &http.Server{Addr: port}
go func() {
if err := server.ListenAndServe(); err != http.ErrServerClosed {
log.Fatalf("ListenAndServe(): %v", err)
}
}()
go func() {
<-ctx.Done()
ctxShutdown, cancelShutdown := context.WithTimeout(context.Background(), 5*time.Second)
defer cancelShutdown()
err := server.Shutdown(ctxShutdown)
if err != nil {
log.Fatalf("Shutdown(): %v", err)
}
}()
}
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