Move swagger-ui under /api/v1 (#2746)

* Move swagger interface under /api/v1

* Update swagger-ui

* Add /api/swagger and prepare for multiple api version

* Update test links

* Fix footer link

routers/api/v1/api.go

@@ -275,8 +275,11 @@ func mustAllowPulls(ctx *context.Context) {
 func RegisterRoutes(m *macaron.Macaron) {
 	bind := binding.Bind
 
+	m.Get("/swagger", misc.Swagger) //Render V1 by default
+
 	m.Group("/v1", func() {
 		// Miscellaneous
+		m.Get("/swagger", misc.Swagger)
 		m.Get("/version", misc.Version)
 		m.Post("/markdown", bind(api.MarkdownOption{}), misc.Markdown)
 		m.Post("/markdown/raw", misc.MarkdownRaw)

routers/api/v1/misc/swagger.go

@@ -0,0 +1,19 @@
+// Copyright 2017 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package misc
+
+import (
+	"code.gitea.io/gitea/modules/base"
+	"code.gitea.io/gitea/modules/context"
+)
+
+// tplSwagger swagger page template
+const tplSwagger base.TplName = "swagger"
+
+// Swagger render swagger-ui page with v1 json
+func Swagger(ctx *context.Context) {
+	ctx.Data["APIJSONVersion"] = "v1"
+	ctx.HTML(200, tplSwagger)
+}