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package github
import (
"bytes"
"encoding/json"
"fmt"
"net/http"
)
type HTTPRequester interface {
Do(req *http.Request) (*http.Response, error)
}
type BearerAuthClient struct {
HTTPRequester
Username string
Password string
}
func WithBearerAuth(
cli HTTPRequester,
username, password string,
) *BearerAuthClient {
return &BearerAuthClient{cli, username, password}
}
func (s *BearerAuthClient) Do(req *http.Request) (*http.Response, error) {
if s.Username != "" && s.Password != "" {
value := fmt.Sprintf("Bearer %s:%s", s.Username, s.Password)
req.Header.Set("Authorization", value)
}
return s.HTTPRequester.Do(req)
}
type jsonClient struct {
Client HTTPRequester
basePath string
}
func newJSONClient(
cli HTTPRequester,
basePath string,
) *jsonClient {
return &jsonClient{
Client: cli,
basePath: basePath,
}
}
func newHTTPJSONReq(
method string,
url string,
req interface{},
) (*http.Request, error) {
body := &bytes.Buffer{}
if req != nil {
buf, err := json.Marshal(req)
if err != nil {
return nil, err
}
body = bytes.NewBuffer(buf)
}
httpReq, err := http.NewRequest(method, url, body)
if err != nil {
return nil, err
}
httpReq.Header.Set("Content-Type", "application/json")
httpReq.Header.Set("Accept", "application/json")
return httpReq, nil
}
func decodeJSONResponse(httpResp *http.Response, resp interface{}) error {
if httpResp.StatusCode/100 != 2 {
return fmt.Errorf(
"received HTTP status code %d (%s)",
httpResp.StatusCode,
httpResp.Status,
)
}
if resp == nil {
return nil
}
err := json.NewDecoder(httpResp.Body).Decode(resp)
if err != nil {
return err
}
return err
}
func (s *jsonClient) Request(
method string,
statusCode *int,
path string,
req, resp interface{},
) (int, error) {
url := fmt.Sprintf("%s/%s", s.basePath, path)
httpReq, err := newHTTPJSONReq(method, url, req)
if err != nil {
return 0, err
}
httpResp, err := s.Client.Do(httpReq)
if err != nil {
return 0, err
}
defer httpResp.Body.Close()
err = decodeJSONResponse(httpResp, resp)
if err != nil {
return httpResp.StatusCode, err
}
if statusCode != nil && httpResp.StatusCode != *statusCode {
return httpResp.StatusCode, fmt.Errorf("expected status code %d but got %d", *statusCode, httpResp.StatusCode)
}
return httpResp.StatusCode, nil
}
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