forked from gitea/gitea
91 lines
2.2 KiB
Go
91 lines
2.2 KiB
Go
package middleware
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"html/template"
|
|
"net/http"
|
|
"path"
|
|
)
|
|
|
|
// RapiDocOpts configures the RapiDoc middlewares
|
|
type RapiDocOpts struct {
|
|
// BasePath for the UI path, defaults to: /
|
|
BasePath string
|
|
// Path combines with BasePath for the full UI path, defaults to: docs
|
|
Path string
|
|
// SpecURL the url to find the spec for
|
|
SpecURL string
|
|
// RapiDocURL for the js that generates the rapidoc site, defaults to: https://cdn.jsdelivr.net/npm/rapidoc/bundles/rapidoc.standalone.js
|
|
RapiDocURL string
|
|
// Title for the documentation site, default to: API documentation
|
|
Title string
|
|
}
|
|
|
|
// EnsureDefaults in case some options are missing
|
|
func (r *RapiDocOpts) EnsureDefaults() {
|
|
if r.BasePath == "" {
|
|
r.BasePath = "/"
|
|
}
|
|
if r.Path == "" {
|
|
r.Path = "docs"
|
|
}
|
|
if r.SpecURL == "" {
|
|
r.SpecURL = "/swagger.json"
|
|
}
|
|
if r.RapiDocURL == "" {
|
|
r.RapiDocURL = rapidocLatest
|
|
}
|
|
if r.Title == "" {
|
|
r.Title = "API documentation"
|
|
}
|
|
}
|
|
|
|
// RapiDoc creates a middleware to serve a documentation site for a swagger spec.
|
|
// This allows for altering the spec before starting the http listener.
|
|
//
|
|
func RapiDoc(opts RapiDocOpts, next http.Handler) http.Handler {
|
|
opts.EnsureDefaults()
|
|
|
|
pth := path.Join(opts.BasePath, opts.Path)
|
|
tmpl := template.Must(template.New("rapidoc").Parse(rapidocTemplate))
|
|
|
|
buf := bytes.NewBuffer(nil)
|
|
_ = tmpl.Execute(buf, opts)
|
|
b := buf.Bytes()
|
|
|
|
return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
|
|
if r.URL.Path == pth {
|
|
rw.Header().Set("Content-Type", "text/html; charset=utf-8")
|
|
rw.WriteHeader(http.StatusOK)
|
|
|
|
_, _ = rw.Write(b)
|
|
return
|
|
}
|
|
|
|
if next == nil {
|
|
rw.Header().Set("Content-Type", "text/plain")
|
|
rw.WriteHeader(http.StatusNotFound)
|
|
_, _ = rw.Write([]byte(fmt.Sprintf("%q not found", pth)))
|
|
return
|
|
}
|
|
next.ServeHTTP(rw, r)
|
|
})
|
|
}
|
|
|
|
const (
|
|
rapidocLatest = "https://unpkg.com/rapidoc/dist/rapidoc-min.js"
|
|
rapidocTemplate = `<!doctype html>
|
|
<html>
|
|
<head>
|
|
<title>{{ .Title }}</title>
|
|
<meta charset="utf-8"> <!-- Important: rapi-doc uses utf8 charecters -->
|
|
<script type="module" src="{{ .RapiDocURL }}"></script>
|
|
</head>
|
|
<body>
|
|
<rapi-doc spec-url="{{ .SpecURL }}"></rapi-doc>
|
|
</body>
|
|
</html>
|
|
`
|
|
)
|