#21 Integrated doc HTML and spec JSON into one request

README.md

@@ -31,7 +31,7 @@ import (
 
 func main() {
 	// ApiRoot with Echo instance
-	r := echoswagger.New(echo.New(), "", "doc/", nil)
+	r := echoswagger.New(echo.New(), "doc/", nil)
 
 	// Routes with parameters & responses
 	r.POST("/", createUser).

README_zh-CN.md

@@ -31,7 +31,7 @@ import (
 
 func main() {
 	// ApiRoot with Echo instance
-	r := echoswagger.New(echo.New(), "", "doc/", nil)
+	r := echoswagger.New(echo.New(), "doc/", nil)
 
 	// Routes with parameters & responses
 	r.POST("/", createUser).

assets.go

@@ -51,9 +51,11 @@ const SwaggerUIContent = `{{define "swagger"}}
       if (!window.location.pathname.endsWith("/")) {
         specPath = "/" + specPath
       }
+      var spec = "{{.spec}}"
       // Build a system
       const ui = SwaggerUIBundle({
         url: window.location.origin+window.location.pathname+specPath,
+        spec: spec ? JSON.parse(spec) : undefined,
         dom_id: '#swagger-ui',
         deepLinking: true,
         presets: [

examples/main_test.go

@@ -1,8 +1,8 @@
 package main
 
 import (
+	"encoding/json"
 	"io/ioutil"
-	"net/http"
 	"net/http/httptest"
 	"testing"
 
@@ -18,8 +18,9 @@ func TestMain(t *testing.T) {
 	c := e.Echo().NewContext(req, rec)
 	b, err := ioutil.ReadFile("./swagger.json")
 	assert.Nil(t, err)
-	if assert.NoError(t, e.(*echoswagger.Root).SpecHandler("/doc")(c)) {
+	s, err := e.(*echoswagger.Root).GetSpec(c, "/doc")
-		assert.Equal(t, http.StatusOK, rec.Code)
+	assert.Nil(t, err)
-		assert.JSONEq(t, string(b), rec.Body.String())
+	rs, err := json.Marshal(s)
-	}
+	assert.Nil(t, err)
+	assert.JSONEq(t, string(b), string(rs))
 }

internal.go

@@ -2,6 +2,7 @@ package echoswagger
 
 import (
 	"bytes"
+	"encoding/json"
 	"html/template"
 	"net/http"
 	"reflect"
@@ -20,8 +21,9 @@ const (
 )
 
 type UISetting struct {
-	HideTop bool
+	DetachSpec bool
-	CDN     string
+	HideTop    bool
+	CDN        string
 }
 
 type RawDefineDic map[string]RawDefine
@@ -31,7 +33,7 @@ type RawDefine struct {
 	Schema *JSONSchema
 }
 
-func (r *Root) docHandler() echo.HandlerFunc {
+func (r *Root) docHandler(docPath string) echo.HandlerFunc {
 	t, err := template.New("swagger").Parse(SwaggerUIContent)
 	if err != nil {
 		panic(err)
@@ -42,12 +44,26 @@ func (r *Root) docHandler() echo.HandlerFunc {
 			cdn = DefaultCDN
 		}
 		buf := new(bytes.Buffer)
-		t.Execute(buf, map[string]interface{}{
+		params := map[string]interface{}{
 			"title":    r.spec.Info.Title,
-			"hideTop":  r.ui.HideTop,
 			"cdn":      cdn,
 			"specName": SpecName,
-		})
+		}
+		if !r.ui.DetachSpec {
+			spec, err := r.GetSpec(c, docPath)
+			if err != nil {
+				return c.String(http.StatusInternalServerError, err.Error())
+			}
+			b, err := json.Marshal(spec)
+			if err != nil {
+				return c.String(http.StatusInternalServerError, err.Error())
+			}
+			params["spec"] = string(b)
+			params["hideTop"] = true
+		} else {
+			params["hideTop"] = r.ui.HideTop
+		}
+		t.Execute(buf, params)
 		return c.HTMLBlob(http.StatusOK, buf.Bytes())
 	}
 }

spec.go

@@ -15,28 +15,38 @@ const (
 	SpecName       = "swagger.json"
 )
 
-func (r *Root) SpecHandler(docPath string) echo.HandlerFunc {
+func (r *Root) specHandler(docPath string) echo.HandlerFunc {
 	return func(c echo.Context) error {
-		r.once.Do(func() {
+		spec, err := r.GetSpec(c, docPath)
-			r.err = r.genSpec(c)
+		if err != nil {
-			r.cleanUp()
+			return c.String(http.StatusInternalServerError, err.Error())
-		})
-		if r.err != nil {
-			return c.String(http.StatusInternalServerError, r.err.Error())
 		}
-		var basePath string
+		return c.JSON(http.StatusOK, spec)
-		if uri, err := url.ParseRequestURI(c.Request().Referer()); err == nil {
-			basePath = trimSuffixSlash(uri.Path, docPath)
-			r.spec.Host = uri.Host
-		} else {
-			basePath = trimSuffixSlash(c.Request().URL.Path, connectPath(docPath, SpecName))
-			r.spec.Host = c.Request().Host
-		}
-		r.spec.BasePath = connectPath(basePath)
-		return c.JSON(http.StatusOK, r.spec)
 	}
 }
 
+// Generate swagger spec data
+func (r *Root) GetSpec(c echo.Context, docPath string) (Swagger, error) {
+	r.once.Do(func() {
+		r.err = r.genSpec(c)
+		r.cleanUp()
+	})
+	if r.err != nil {
+		return Swagger{}, r.err
+	}
+	swagger := *r.spec
+	var basePath string
+	if uri, err := url.ParseRequestURI(c.Request().Referer()); err == nil {
+		basePath = trimSuffixSlash(uri.Path, docPath)
+		swagger.Host = uri.Host
+	} else {
+		basePath = trimSuffixSlash(c.Request().URL.Path, connectPath(docPath, SpecName))
+		swagger.Host = c.Request().Host
+	}
+	swagger.BasePath = connectPath(basePath)
+	return swagger, nil
+}
+
 func (r *Root) genSpec(c echo.Context) error {
 	r.spec.Swagger = SwaggerVersion
 	r.spec.Paths = make(map[string]interface{})

spec_test.go

@@ -21,12 +21,26 @@ func TestSpec(t *testing.T) {
 		rec := httptest.NewRecorder()
 		c := e.NewContext(req, rec)
 		j := `{"swagger":"2.0","info":{"title":"Project APIs","version":""},"host":"example.com","basePath":"/","paths":{}}`
-		if assert.NoError(t, r.(*Root).SpecHandler("/doc/")(c)) {
+		if assert.NoError(t, r.(*Root).specHandler("/doc/")(c)) {
 			assert.Equal(t, http.StatusOK, rec.Code)
 			assert.JSONEq(t, j, rec.Body.String())
 		}
 	})
 
+	t.Run("BasicGenerater", func(t *testing.T) {
+		r := prepareApiRoot()
+		e := r.(*Root).echo
+		req := httptest.NewRequest(echo.GET, "/doc/swagger.json", nil)
+		rec := httptest.NewRecorder()
+		c := e.NewContext(req, rec)
+		j := `{"swagger":"2.0","info":{"title":"Project APIs","version":""},"host":"example.com","basePath":"/","paths":{}}`
+		s, err := r.(*Root).GetSpec(c, "/doc/")
+		assert.Nil(t, err)
+		rs, err := json.Marshal(s)
+		assert.Nil(t, err)
+		assert.JSONEq(t, j, string(rs))
+	})
+
 	t.Run("Methods", func(t *testing.T) {
 		r := prepareApiRoot()
 		var h echo.HandlerFunc
@@ -41,7 +55,7 @@ func TestSpec(t *testing.T) {
 		req := httptest.NewRequest(echo.GET, "/doc/swagger.json", nil)
 		rec := httptest.NewRecorder()
 		c := e.NewContext(req, rec)
-		if assert.NoError(t, r.(*Root).SpecHandler("/doc")(c)) {
+		if assert.NoError(t, r.(*Root).specHandler("/doc")(c)) {
 			assert.Equal(t, http.StatusOK, rec.Code)
 			s := r.(*Root).spec
 			assert.Len(t, s.Paths, 1)
@@ -55,32 +69,6 @@ func TestSpec(t *testing.T) {
 		}
 	})
 
-	t.Run("ErrorGroupSecurity", func(t *testing.T) {
-		r := prepareApiRoot()
-		e := r.(*Root).echo
-		var h echo.HandlerFunc
-		r.Group("G", "/g").SetSecurity("JWT").GET("/", h)
-		req := httptest.NewRequest(echo.GET, "/doc/swagger.json", nil)
-		rec := httptest.NewRecorder()
-		c := e.NewContext(req, rec)
-		if assert.NoError(t, r.(*Root).SpecHandler("/doc")(c)) {
-			assert.Equal(t, http.StatusInternalServerError, rec.Code)
-		}
-	})
-
-	t.Run("ErrorApiSecurity", func(t *testing.T) {
-		r := prepareApiRoot()
-		e := r.(*Root).echo
-		var h echo.HandlerFunc
-		r.GET("/", h).SetSecurity("JWT")
-		req := httptest.NewRequest(echo.GET, "/doc/swagger.json", nil)
-		rec := httptest.NewRecorder()
-		c := e.NewContext(req, rec)
-		if assert.NoError(t, r.(*Root).SpecHandler("/doc")(c)) {
-			assert.Equal(t, http.StatusInternalServerError, rec.Code)
-		}
-	})
-
 	t.Run("CleanUp", func(t *testing.T) {
 		r := prepareApiRoot()
 		e := r.(*Root).echo
@@ -96,7 +84,7 @@ func TestSpec(t *testing.T) {
 		rec := httptest.NewRecorder()
 		c := e.NewContext(req, rec)
 		j := `{"swagger":"2.0","info":{"title":"Project APIs","version":""},"host":"example.com","basePath":"/","paths":{"/ping":{"get":{"responses":{"default":{"description":"successful operation"}}}},"/users/{id}":{"delete":{"tags":["Users"],"responses":{"default":{"description":"successful operation"}}}}},"tags":[{"name":"Users"}]}`
-		if assert.NoError(t, r.(*Root).SpecHandler("/doc")(c)) {
+		if assert.NoError(t, r.(*Root).specHandler("/doc")(c)) {
 			assert.Equal(t, http.StatusOK, rec.Code)
 			assert.JSONEq(t, j, rec.Body.String())
 		}
@@ -184,7 +172,7 @@ func TestReferer(t *testing.T) {
 			req.Header.Add("referer", tt.referer)
 			rec := httptest.NewRecorder()
 			c := e.NewContext(req, rec)
-			if assert.NoError(t, r.(*Root).SpecHandler(tt.docPath)(c)) {
+			if assert.NoError(t, r.(*Root).specHandler(tt.docPath)(c)) {
 				assert.Equal(t, http.StatusOK, rec.Code)
 				var v struct {
 					Host     string `json:"host"`
@@ -226,7 +214,7 @@ func TestAddDefinition(t *testing.T) {
 	req := httptest.NewRequest(echo.GET, "/doc/swagger.json", nil)
 	rec := httptest.NewRecorder()
 	c := e.NewContext(req, rec)
-	if assert.NoError(t, r.(*Root).SpecHandler("/doc")(c)) {
+	if assert.NoError(t, r.(*Root).specHandler("/doc")(c)) {
 		assert.Equal(t, http.StatusOK, rec.Code)
 		assert.Len(t, r.(*Root).spec.Definitions, 2)
 	}

wrapper.go

@@ -67,6 +67,7 @@ type ApiRoot interface {
 	AddSecurityOAuth2(name, desc string, flow OAuth2FlowType, authorizationUrl, tokenUrl string, scopes map[string]string) ApiRoot
 
 	// SetUI sets UI setting.
+	// If DetachSpec is false, HideTop will not take effect
 	SetUI(ui UISetting) ApiRoot
 
 	// SetScheme sets available protocol schemes.
@@ -232,8 +233,8 @@ func New(e *echo.Echo, docPath string, i *Info) ApiRoot {
 		},
 	}
 
-	e.GET(connectPath(docPath), r.docHandler())
+	e.GET(connectPath(docPath), r.docHandler(docPath))
-	e.GET(connectPath(docPath, SpecName), r.SpecHandler(docPath))
+	e.GET(connectPath(docPath, SpecName), r.specHandler(docPath))
 	return r
 }
 

wrapper_test.go

@@ -330,7 +330,7 @@ func TestUI(t *testing.T) {
 		req := httptest.NewRequest(echo.GET, "/doc/", nil)
 		rec := httptest.NewRecorder()
 		c := se.echo.NewContext(req, rec)
-		h := se.docHandler()
+		h := se.docHandler("doc/")
 
 		if assert.NoError(t, h(c)) {
 			assert.Equal(t, http.StatusOK, rec.Code)
@@ -344,7 +344,7 @@ func TestUI(t *testing.T) {
 		req := httptest.NewRequest(echo.GET, "/doc/", nil)
 		rec := httptest.NewRecorder()
 		c := se.echo.NewContext(req, rec)
-		h := se.docHandler()
+		h := se.docHandler("doc/")
 
 		cdn := "https://cdnjs.cloudflare.com/ajax/libs/swagger-ui/3.18.0"
 		r.SetUI(UISetting{
@@ -355,6 +355,17 @@ func TestUI(t *testing.T) {
 		if assert.NoError(t, h(c)) {
 			assert.Equal(t, http.StatusOK, rec.Code)
 			assert.Contains(t, rec.Body.String(), cdn)
+			assert.Contains(t, rec.Body.String(), `{\x22swagger\x22:`)
+			assert.Contains(t, rec.Body.String(), "#swagger-ui>.swagger-container>.topbar")
+		}
+
+		r.SetUI(UISetting{
+			DetachSpec: true,
+		})
+
+		if assert.NoError(t, h(c)) {
+			assert.Equal(t, http.StatusOK, rec.Code)
+			assert.NotContains(t, rec.Body.String(), "{\x22swagger\x22:")
 			assert.Contains(t, rec.Body.String(), "#swagger-ui>.swagger-container>.topbar")
 		}
 	})
@@ -474,3 +485,37 @@ func TestEcho(t *testing.T) {
 	a := prepareApi()
 	assert.NotNil(t, a.Route())
 }
+
+func TestHandlers(t *testing.T) {
+	t.Run("ErrorGroupSecurity", func(t *testing.T) {
+		r := prepareApiRoot()
+		e := r.(*Root).echo
+		var h echo.HandlerFunc
+		r.Group("G", "/g").SetSecurity("JWT").GET("/", h)
+		req := httptest.NewRequest(echo.GET, "/doc/swagger.json", nil)
+		rec := httptest.NewRecorder()
+		c := e.NewContext(req, rec)
+		if assert.NoError(t, r.(*Root).specHandler("/doc")(c)) {
+			assert.Equal(t, http.StatusInternalServerError, rec.Code)
+		}
+		if assert.NoError(t, r.(*Root).docHandler("/doc")(c)) {
+			assert.Equal(t, http.StatusInternalServerError, rec.Code)
+		}
+	})
+
+	t.Run("ErrorApiSecurity", func(t *testing.T) {
+		r := prepareApiRoot()
+		e := r.(*Root).echo
+		var h echo.HandlerFunc
+		r.GET("/", h).SetSecurity("JWT")
+		req := httptest.NewRequest(echo.GET, "/doc/swagger.json", nil)
+		rec := httptest.NewRecorder()
+		c := e.NewContext(req, rec)
+		if assert.NoError(t, r.(*Root).specHandler("/doc")(c)) {
+			assert.Equal(t, http.StatusInternalServerError, rec.Code)
+		}
+		if assert.NoError(t, r.(*Root).docHandler("/doc")(c)) {
+			assert.Equal(t, http.StatusInternalServerError, rec.Code)
+		}
+	})
+}