rename and move related codes together

lib/web.go

@@ -1,13 +1,56 @@
 package lib
 
 import (
+	"context"
 	"errors"
+	"fmt"
 	"io"
 	"net/http"
+	"net/url"
 	"strings"
 )
 
-func Run(bind string, f *Forgejo) (*http.Server, error) {
+type Forgejo struct {
+	Server url.URL
+	Token  string
+	Branch string
+}
+
+var ErrNotFound = errors.New("404 not found")
+
+// headers must ot be nil
+func (f *Forgejo) GetFile(ctx context.Context, headers map[string]string, user, repo, branch, file string) (ret *http.Response, err error) {
+	u := f.Server
+	u.Path = "/api/v1/repos/" + user + "/" + repo + "/raw/" + file
+	p := u.Query()
+	p.Set("ref", branch)
+	u.RawQuery = p.Encode()
+	fmt.Println(u.String())
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, u.String(), nil)
+	if err != nil {
+		return
+	}
+
+	for k, v := range headers {
+		if v == "" {
+			continue
+		}
+		req.Header.Set(k, v)
+	}
+	req.Header.Set("Authorization", "token "+f.Token)
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return
+	}
+	if resp.StatusCode == http.StatusNotFound {
+		err = ErrNotFound
+		return
+	}
+
+	return resp, nil
+}
+
+func UseAPI(bind string, f *Forgejo) (*http.Server, error) {
 	if f == nil {
 		return nil, errors.New("forgejo is nil")
 	}