1 files changed, 90 insertions, 0 deletions
diff --git a/vendor/github.com/go-openapi/runtime/middleware/rapidoc.go b/vendor/github.com/go-openapi/runtime/middleware/rapidoc.go
new file mode 100644
index 000000000..4be330d6d
--- /dev/null
+++ b/vendor/github.com/go-openapi/runtime/middleware/rapidoc.go
@@ -0,0 +1,90 @@
+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>
+`
+)