/
mux.go
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/
mux.go
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package mux
import (
"github.com/gorilla/mux"
"net/http"
)
// Router Interface
type Router interface {
Get(string, http.Handler) Router
Post(string, http.Handler) Router
Put(string, http.Handler) Router
Patch(string, http.Handler) Router
Delete(string, http.Handler) Router
Group(string, func(Router)) Router
Methods(...string) Router
Path(string) Router
Host(string) Router
Middlewares(...MiddlewareConstructor) Router
Handler(http.Handler) Router
ServeHTTP(http.ResponseWriter, *http.Request)
}
// GowardRouter holds the data of the route
type GowardRouter struct {
FParentRouter *mux.Router
FRouter *mux.Router
FPath string
FPrefix string
FHost string
FMethods []string
FMiddleware []MiddlewareConstructor
}
// MiddlewareConstructor type Middleware
type MiddlewareConstructor func(http.Handler) http.Handler
// Vars gets path variables from request.
func Vars(r *http.Request) map[string]string {
return mux.Vars(r)
}
// NewRouter creates an instance of GowardRouter
func NewRouter(router *mux.Router) GowardRouter {
if router == nil {
router = mux.NewRouter()
}
return GowardRouter{FRouter: router}
}
// HANDLER create route using GorwardRouter values
func (r GowardRouter) Handler(handler http.Handler) Router {
var route *mux.Route
if r.FMiddleware != nil {
handler = bindMiddlewares(handler, r.FMiddleware...)
}
if r.FPath == "/" && r.FParentRouter != nil {
route = r.FParentRouter.NewRoute()
route = route.Path(r.FPrefix)
} else {
route = r.FRouter.NewRoute()
route.Path(r.FPath)
}
if r.FHost != "" {
route = route.Host(r.FHost)
}
if r.Methods != nil {
route = route.Methods(r.FMethods...)
}
route.Handler(handler)
return r
}
// bindMiddlewares create handler by chaining middleware and handler
func bindMiddlewares(handler http.Handler, middlewares ...MiddlewareConstructor) http.Handler {
var final http.Handler
if handler != nil {
final = handler
} else {
final = http.DefaultServeMux
}
for i := len(middlewares) - 1; i >= 0; i-- {
final = middlewares[i](final)
}
return final
}
// MIDDLEWARES set GowardRoute's middlewares
func (r GowardRouter) Middlewares(middlewares ...MiddlewareConstructor) Router {
n := &GowardRouter{
FParentRouter: r.FParentRouter,
FRouter: r.FRouter,
FHost: r.FHost,
FPath: r.FPath,
FPrefix: r.FPrefix,
FMethods: r.FMethods,
FMiddleware: middlewares,
}
return n
}
// METHODS set GowardRoute's Methods
func (r GowardRouter) Methods(methods ...string) Router {
n := &GowardRouter{
FParentRouter: r.FParentRouter,
FRouter: r.FRouter,
FHost: r.FHost,
FPath: r.FPath,
FPrefix: r.FPrefix,
FMethods: methods,
FMiddleware: r.FMiddleware,
}
return n
}
// HOST set GowardRoute's Host
func (r GowardRouter) Host(host string) Router {
n := &GowardRouter{
FParentRouter: r.FParentRouter,
FRouter: r.FRouter,
FHost: host,
FPath: r.FPath,
FPrefix: r.FPrefix,
FMethods: r.FMethods,
FMiddleware: r.FMiddleware,
}
return n
}
// PATH set GowardRoute's path
func (r GowardRouter) Path(path string) Router {
n := &GowardRouter{
FParentRouter: r.FParentRouter,
FRouter: r.FRouter,
FHost: r.FHost,
FPath: path,
FPrefix: r.FPrefix,
FMethods: r.FMethods,
FMiddleware: r.FMiddleware,
}
return n
}
// GROUP creates a Route group
func (r GowardRouter) Group(path string, subRouter func(Router)) Router {
n := &GowardRouter{
FParentRouter: r.FRouter,
FRouter: r.FRouter.PathPrefix(path).Subrouter(),
FHost: r.FHost,
FPrefix: path,
FMethods: r.FMethods,
FMiddleware: r.FMiddleware,
}
subRouter(n)
return r
}
// GET is a shorthand for creating Route with GET method
func (r GowardRouter) Get(path string, handler http.Handler) Router {
r.Methods("GET").Path(path).Handler(handler)
return r
}
// Post is a shorthand for creating Route with Post method
func (r GowardRouter) Post(path string, handler http.Handler) Router {
r.Methods("POST").Path(path).Handler(handler)
return r
}
// Put is a shorthand for creating Route with Put method
func (r GowardRouter) Put(path string, handler http.Handler) Router {
r.Methods("PUT").Path(path).Handler(handler)
return r
}
// Patch is a shorthand for creating Route with Patch method
func (r GowardRouter) Patch(path string, handler http.Handler) Router {
r.Methods("PATCH").Path(path).Handler(handler)
return r
}
// Delete is a shorthand for creating Route with Delete method
func (r GowardRouter) Delete(path string, handler http.Handler) Router {
r.Methods("DELETE").Path(path).Handler(handler)
return r
}
// OPTIONS is a shorthand for creating Route with OPTIONS method
func (r GowardRouter) OPTIONS(path string, handler http.Handler) Router {
r.Methods("OPTIONS").Path(path).Handler(handler)
return r
}
// ServeHTTP to pass checks for type http.Handler
func (r GowardRouter) ServeHTTP(w http.ResponseWriter, req *http.Request) {
r.FRouter.ServeHTTP(w, req)
}