diff --git a/main.go b/main.go
index 7d44db5..58cc890 100644
--- a/main.go
+++ b/main.go
@@ -30,6 +30,12 @@ const LINKSMART = `
╩═╝ ╩ ╝╚╝ ╩ ╩ ╚═╝ ╩ ╩ ╩ ╩ ╩╚═ ╩
`
+const (
+ SwaggerUISchemeLess = "linksmart.github.io/swagger-ui/dist"
+ Spec = "https://raw.githubusercontent.com/linksmart/thing-directory/{version}/apidoc/openapi-spec.yml"
+ SourceCodeRepo = "https://github.com/linksmart/thing-directory"
+)
+
var (
confPath = flag.String("conf", "conf/thing-directory.json", "Configuration file path")
schemaPath = flag.String("schema", "conf/wot_td_schema.json", "WoT Thing Description schema file path")
diff --git a/router.go b/router.go
index 221ac1e..2c5c358 100644
--- a/router.go
+++ b/router.go
@@ -4,10 +4,10 @@ package main
import (
"fmt"
+ "html/template"
"io"
"log"
"net/http"
- "net/url"
"strings"
"github.com/gorilla/mux"
@@ -61,52 +61,49 @@ func optionsHandler(w http.ResponseWriter, _ *http.Request) {
}
func indexHandler(w http.ResponseWriter, _ *http.Request) {
- const sourceRepo = "https://github.com/linksmart/thing-directory"
- var version = "master"
+ version := "master"
if Version != "" {
version = Version
}
- var spec = "https://raw.githubusercontent.com/linksmart/thing-directory/" + version + "/apidoc/openapi-spec.yml"
- var swaggerUIRelativeScheme = "//linksmart.github.io/swagger-ui/dist"
- var swaggerUISecure = "https:" + swaggerUIRelativeScheme
- // TODO: check on startup
- _, err := url.ParseRequestURI(swaggerUISecure)
- if err != nil {
- log.Printf("ERROR: Invalid SwaggerUI URL: %s", err)
- }
+ spec := strings.NewReplacer("{version}", version).Replace(Spec)
+
+ swaggerUIRelativeScheme := "//" + SwaggerUISchemeLess
+ swaggerUISecure := "https:" + swaggerUIRelativeScheme
w.Header().Set("Content-Type", "text/html")
- var body string
- body += ``
- body += `LinkSmart Thing Directory
`
- body += fmt.Sprintf(`Version: %s`, version)
- // Source code
- body += fmt.Sprintf(`%s
`, sourceRepo, sourceRepo)
- // Registration endpoint
- body += `RESTful registration endpoint: /td
`
- // Swagger UI
- body += fmt.Sprintf(`API Documentation: Swagger UI
`, swaggerUISecure, spec)
- // Interactive Swagger UI
- body += fmt.Sprintf(`Try it out! (experimental; requires internet connection on both server and client sides)
+
+ data := struct {
+ Version, SourceRepo, Spec, SwaggerUIRelativeScheme, SwaggerUISecure string
+ }{version, SourceCodeRepo, spec, swaggerUIRelativeScheme, swaggerUISecure}
+
+ tmpl := `
+LinkSmart Thing Directory
+Version: {{.Version}}
+{{.SourceRepo}}
+API Documentation: Swagger UI
+Try it out! (experimental; requires internet connection on both server and client sides)
`, swaggerUIRelativeScheme)
- body += ``
+ window.onload = function(){
+ document.getElementById("swagger").href = "{{.SwaggerUIRelativeScheme}}/?url=" + window.location.toString() + "openapi-spec-proxy" + window.location.pathname;
+ }
+`
- _, err = w.Write([]byte(body))
+ t, err := template.New("body").Parse(tmpl)
+ if err != nil {
+ log.Fatalf("Error parsing template: %s", err)
+ }
+ err = t.Execute(w, data)
if err != nil {
- log.Printf("ERROR writing HTTP response: %s", err)
+ log.Fatalf("Error applying template to response: %s", err)
}
}
func apiSpecProxy(w http.ResponseWriter, req *http.Request) {
- var version = "master"
+ version := "master"
if Version != "" {
version = Version
}
- var spec = "https://raw.githubusercontent.com/linksmart/thing-directory/" + version + "/apidoc/openapi-spec.yml"
+ spec := strings.NewReplacer("{version}", version).Replace(Spec)
// get the spec
res, err := http.Get(spec)