fix: oauth2-redirect outside of the base swagger path (#177)

README.md

@@ -8,12 +8,13 @@ gin middleware to automatically generate RESTFUL API documentation with Swagger
 [![GoDoc](https://godoc.org/github.com/swaggo/gin-swagger?status.svg)](https://godoc.org/github.com/swaggo/gin-swagger)
 [![Release](https://img.shields.io/github/release/swaggo/gin-swagger.svg?style=flat-square)](https://github.com/swaggo/gin-swagger/releases)
 
-
 ## Usage
 
 ### Start using it
+
 1. Add comments to your API source code, [See Declarative Comments Format](https://swaggo.github.io/swaggo.io/declarative_comments_format/).
 2. Download [Swag](https://github.com/swaggo/swag) for Go by using:
+
 ```sh
 go get -u github.com/swaggo/swag/cmd/swag
 ```
@@ -21,14 +22,18 @@ go get -u github.com/swaggo/swag/cmd/swag
 3. Run the [Swag](https://github.com/swaggo/swag) at your Go project root path(for instance `~/root/go-peoject-name`),
    [Swag](https://github.com/swaggo/swag) will parse comments and generate required files(`docs` folder and `docs/doc.go`)
    at `~/root/go-peoject-name/docs`.
+
 ```sh
 swag init
 ```
+
 4. Download [gin-swagger](https://github.com/swaggo/gin-swagger) by using:
+
 ```sh
 go get -u github.com/swaggo/gin-swagger
 go get -u github.com/swaggo/files
 ```
+
 Import following in your code:
 
 ```go
@@ -38,7 +43,9 @@ import "github.com/swaggo/files" // swagger embed files
 ```
 
 ### Canonical example:
+
 Now assume you have implemented a simple api as following:
+
 ```go
 // A get function which returns a hello world string by json
 func Helloworld(g *gin.Context)  {
@@ -46,9 +53,11 @@ func Helloworld(g *gin.Context)  {
 }
 
 ```
+
 So how to use gin-swagger on api above? Just follow the following guide.
 
 1. Add Comments for apis and main function with gin-swagger rules like following:
+
 ```go
 // @BasePath /api/v1
 
@@ -69,14 +78,17 @@ func Helloworld(g *gin.Context)  {
 2. Use `swag init` command to generate a docs, docs generated will be stored at
 3. import the docs like this:
    I assume your project named `github.com/go-project-name/docs`.
+
 ```go
 import (
    docs "github.com/go-project-name/docs"
 )
 ```
+
 4. build your application and after that, go to http://localhost:8080/swagger/index.html ,you to see your Swagger UI.
 
 5. The full code and folder relatives here:
+
 ```go
 package main
 
@@ -117,7 +129,9 @@ func main()  {
 
 }
 ```
+
 Demo project tree, `swag init` is run at relative `.`
+
 ```
 .
 ├── docs
@@ -146,8 +160,8 @@ func main() {
 ```
 
 | Option                   | Type   | Default    | Description                                                                                                                                                                         |
-|--------------------------|--------|------------|---------------------------------------------------------------------------|
+| ------------------------ | ------ | ---------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | URL                      | string | "doc.json" | URL pointing to API definition                                                                                                                                                      |
 | DocExpantion             | string | "list"     | Controls the default expansion setting for the operations and tags. It can be 'list' (expands only the tags), 'full' (expands the tags and operations) or 'none' (expands nothing). |
-| DeepLinking              | bool   | true       | If set to true, enables deep linking for tags and operations. See the Deep Linking documentation for more information.|
+| DeepLinking              | bool   | true       | If set to true, enables deep linking for tags and operations. See the Deep Linking documentation for more information.                                                              |
 | DefaultModelsExpandDepth | int    | 1          | Default expansion depth for models (set to -1 completely hide the models)                                                                                                           |

example/basic/main.go

@@ -2,7 +2,7 @@ package main
 
 import (
 	"github.com/gin-gonic/gin"
-	"github.com/swaggo/files"
+	swaggerFiles "github.com/swaggo/files"
 	"github.com/swaggo/gin-swagger"
 
 	"github.com/swaggo/gin-swagger/example/basic/api"

example/gzipped/main.go

@@ -3,7 +3,7 @@ package main
 import (
 	"github.com/gin-contrib/gzip"
 	"github.com/gin-gonic/gin"
-	"github.com/swaggo/files"
+	swaggerFiles "github.com/swaggo/files"
 	"github.com/swaggo/gin-swagger"
 
 	_ "github.com/swaggo/gin-swagger/example/basic/docs"

swagger.go

@@ -14,6 +14,14 @@ import (
 	"github.com/swaggo/swag"
 )
 
+type swaggerConfig struct {
+	URL                      string
+	DeepLinking              bool
+	DocExpansion             string
+	DefaultModelsExpandDepth int
+	Oauth2RedirectURL        template.JS
+}
+
 // Config stores ginSwagger configuration variables.
 type Config struct {
 	//The url pointing to API definition (normally swagger.json or swagger.yaml). Default is `doc.json`.
@@ -23,6 +31,21 @@ type Config struct {
 	DefaultModelsExpandDepth int
 }
 
+// Convert the config to a swagger one in order to fill unexposed template values.
+func (c Config) ToSwaggerConfig() swaggerConfig {
+	return swaggerConfig{
+		URL:                      c.URL,
+		DeepLinking:              c.DeepLinking,
+		DocExpansion:             c.DocExpansion,
+		DefaultModelsExpandDepth: c.DefaultModelsExpandDepth,
+		Oauth2RedirectURL: template.JS(
+			"`${window.location.protocol}//${window.location.host}$" +
+				"{window.location.pathname.split('/').slice(0, window.location.pathname.split('/').length - 1).join('/')}" +
+				"/oauth2-redirect.html`",
+		),
+	}
+}
+
 // URL presents the url pointing to API definition (normally swagger.json or swagger.yaml).
 func URL(url string) func(c *Config) {
 	return func(c *Config) {
@@ -82,7 +105,7 @@ func CustomWrapHandler(config *Config, handler *webdav.Handler) gin.HandlerFunc
 		matches := rexp.FindStringSubmatch(c.Request.RequestURI)
 
 		if len(matches) != 3 {
-			c.Status(404)
+			c.Status(http.StatusNotFound)
 			_, _ = c.Writer.Write([]byte("404 page not found"))
 			return
 		}
@@ -107,7 +130,7 @@ func CustomWrapHandler(config *Config, handler *webdav.Handler) gin.HandlerFunc
 
 		switch path {
 		case "index.html":
-			_ = index.Execute(c.Writer, config)
+			_ = index.Execute(c.Writer, config.ToSwaggerConfig())
 		case "doc.json":
 			doc, err := swag.ReadDoc()
 			if err != nil {
@@ -130,7 +153,7 @@ func DisablingWrapHandler(h *webdav.Handler, envName string) gin.HandlerFunc {
 		return func(c *gin.Context) {
 			// Simulate behavior when route unspecified and
 			// return 404 HTTP code
-			c.String(404, "")
+			c.String(http.StatusNotFound, "")
 		}
 	}
 
@@ -145,7 +168,7 @@ func DisablingCustomWrapHandler(config *Config, h *webdav.Handler, envName strin
 		return func(c *gin.Context) {
 			// Simulate behavior when route unspecified and
 			// return 404 HTTP code
-			c.String(404, "")
+			c.String(http.StatusNotFound, "")
 		}
 	}
 
@@ -230,6 +253,7 @@ window.onload = function() {
     url: "{{.URL}}",
     dom_id: '#swagger-ui',
     validatorUrl: null,
+    oauth2RedirectUrl: {{.Oauth2RedirectURL}},
     presets: [
       SwaggerUIBundle.presets.apis,
       SwaggerUIStandalonePreset

swagger_test.go

@@ -62,6 +62,7 @@ func TestWrapCustomHandler(t *testing.T) {
 
 	w6 := performRequest("GET", "/notfound", router)
 	assert.Equal(t, 404, w6.Code)
+
 }
 
 func TestDisablingWrapHandler(t *testing.T) {
@@ -94,11 +95,11 @@ func TestDisablingWrapHandler(t *testing.T) {
 	w22 := performRequest("GET", "/disabling/doc.json", router)
 	assert.Equal(t, 404, w22.Code)
 
-	w33 := performRequest("GET", "/disabling/favicon-16x16.png", router)
-	assert.Equal(t, 404, w33.Code)
-
-	w44 := performRequest("GET", "/disabling/notfound", router)
+	w44 := performRequest("GET", "/disabling/oauth2-redirect.html", router)
 	assert.Equal(t, 404, w44.Code)
+
+	w55 := performRequest("GET", "/disabling/notfound", router)
+	assert.Equal(t, 404, w55.Code)
 }
 
 func TestDisablingCustomWrapHandler(t *testing.T) {