package swaggerui_handler import ( "embed" "html/template" "net/http" "path" "reflect" ) //go:embed *.js *.css *.html *.png var assets embed.FS var ( Handler = func(prefix string) http.HandlerFunc { return func(w http.ResponseWriter, r *http.Request) { if r.Method != http.MethodGet || path.Base(r.URL.Path) != "swagger-initializer.js" { http.StripPrefix(prefix, http.FileServer(http.FS(assets))).ServeHTTP(w, r) return } tpl := template.New("swagger-initializer.js").Funcs(TemplateFuncs) ptpl, err := tpl.Parse(Template) if err != nil { w.WriteHeader(http.StatusInternalServerError) _, _ = w.Write([]byte(err.Error())) return } if err := ptpl.Execute(w, Config); err != nil { w.WriteHeader(http.StatusInternalServerError) _, _ = w.Write([]byte(err.Error())) return } } } TemplateFuncs = template.FuncMap{ "isInt": func(i interface{}) bool { v := reflect.ValueOf(i) switch v.Kind() { case reflect.Int, reflect.Int8, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64: return true default: return false } }, "isBool": func(i interface{}) bool { v := reflect.ValueOf(i) switch v.Kind() { case reflect.Bool: return true default: return false } }, "isString": func(i interface{}) bool { v := reflect.ValueOf(i) switch v.Kind() { case reflect.String: return true default: return false } }, "isSlice": func(i interface{}) bool { v := reflect.ValueOf(i) switch v.Kind() { case reflect.Slice: return true default: return false } }, "isMap": func(i interface{}) bool { v := reflect.ValueOf(i) switch v.Kind() { case reflect.Map: return true default: return false } }, } Template = ` window.onload = function() { // window.ui = SwaggerUIBundle({ {{- range $k, $v := . }} {{- if (eq (printf "%s" $v) "") -}} {{- continue -}} {{ end }} {{ $k }}: {{ if isBool $v -}} {{- $v -}}, {{- else if isInt $v -}} {{- $v -}}, {{- else if isString $v -}} "{{- $v -}}", {{- else if and (isSlice $v) (or (eq (printf "%s" $k) "presets") (eq (printf "%s" $k) "plugins")) -}} [ {{- range $v }} {{ . }}, {{- end }} ], {{- end -}} {{ end }} }); // };` Config = map[string]interface{}{ "configUrl": "", "dom_id": "#swagger-ui", /* "domNode": "", "spec": "", "urls": []interface{}{ map[string]interface{}{ "url": "", "name": "", }, }, }, */ "url": "https://petstore.swagger.io/v2/swagger.json", "deepLinking": true, "displayOperationId": false, "defaultModelsExpandDepth": 1, "defaultModelExpandDepth": 1, "displayRequestDuration": true, "filter": true, "operationsSorter": "alpha", "showExtensions": true, "tryItOutEnabled": true, "presets": []string{ "SwaggerUIBundle.presets.apis", "SwaggerUIStandalonePreset", }, "plugins": []string{ "SwaggerUIBundle.plugins.DownloadUrl", }, "layout": "StandaloneLayout", } )