initial commit

go.mod

@@ -0,0 +1,3 @@
+module github.com/soy4rias/web_server
+
+go 1.14

router.go

@@ -0,0 +1,46 @@
+package web_server
+
+import (
+	"net/http"
+)
+
+type Router struct {
+	rules map[string]map[string]http.HandlerFunc
+}
+
+func (r *Router) FindHandler(method string, path string) (http.HandlerFunc, bool, bool) {
+	var pathExists, methodExists bool
+	var handler http.HandlerFunc
+
+	_, pathExists = r.rules[path]
+
+	handler, methodExists = r.rules[path][method]
+
+	return handler, pathExists, methodExists
+}
+
+func NewRouter() *Router {
+	return &Router{
+		rules: make(map[string]map[string]http.HandlerFunc),
+	}
+}
+
+func (r *Router) ServeHTTP(w http.ResponseWriter, request *http.Request) {
+
+	var pathExists, methodExists bool
+	var handler http.HandlerFunc
+
+	handler, pathExists, methodExists = r.FindHandler(request.Method, request.URL.Path)
+
+	if !pathExists {
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	if !methodExists {
+		w.WriteHeader(http.StatusMethodNotAllowed)
+		return
+	}
+
+	handler(w, request)
+}

server.go

@@ -0,0 +1,56 @@
+package web_server
+
+import "net/http"
+
+type Server struct {
+	port   string
+	router *Router
+}
+
+func CreateServer(port string) *Server {
+	return &Server{
+		port:   port,
+		router: NewRouter(),
+	}
+}
+
+func (s *Server) Get(path string, handler http.HandlerFunc) {
+	s.handle("GET", path, handler)
+}
+func (s *Server) Post(path string, handler http.HandlerFunc) {
+	s.handle("POST", path, handler)
+}
+func (s *Server) Put(path string, handler http.HandlerFunc) {
+	s.handle("PUT", path, handler)
+}
+func (s *Server) Delete(path string, handler http.HandlerFunc) {
+	s.handle("DELETE", path, handler)
+}
+
+func (s *Server) handle(method string, path string, handler http.HandlerFunc) {
+	_, exists := s.router.rules[path]
+
+	if !exists {
+		s.router.rules[path] = make(map[string]http.HandlerFunc)
+	}
+
+	s.router.rules[path][method] = handler
+}
+
+func (s *Server) AddMiddleWare(f http.HandlerFunc, middleWares ...MiddleWare) http.HandlerFunc {
+	for _, m := range middleWares {
+		f = m(f)
+	}
+	return f
+}
+
+func (s *Server) Listen() error {
+	http.Handle("/", s.router)
+	err := http.ListenAndServe(s.port, nil)
+
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

types_server.go

@@ -0,0 +1,7 @@
+package web_server
+
+import (
+	"net/http"
+)
+
+type MiddleWare func(http.HandlerFunc) http.HandlerFunc