package main

import (
	"encoding/json"
	"fmt"
	"log"
	"net/http"
)

type HttpServer struct {
	Port string
	ovpn *OpenVpnMgt
}

func (h *HttpServer) handler(w http.ResponseWriter, r *http.Request) {
	fmt.Fprintf(w, "Hi there, I love %s!", r.URL.Path[1:])
}

func (h *HttpServer) versionHandler(w http.ResponseWriter, r *http.Request) {
	err, message := h.ovpn.Version()
	if err != nil {
		fmt.Fprintf(w, "Error : %s", err)
	}

	jsonStr, err := json.Marshal(message)
	if err != nil {
		fmt.Fprintf(w, "Error : %s", err)
	}
	fmt.Fprintf(w, "%s", jsonStr)
}

func (h *HttpServer) helpHandler(w http.ResponseWriter, r *http.Request) {
	err, message := h.ovpn.Help()
	if err != nil {
		fmt.Fprintf(w, "Error : %s", err)
	} else {
		fmt.Fprintf(w, "%s", message)
	}

}

func NewHTTPServer(port string, s *OpenVpnMgt) {
	h := &HttpServer{
		Port: port,
		ovpn: s,
	}
	http.HandleFunc("/help", h.helpHandler)
	http.HandleFunc("/version", h.versionHandler)
	http.HandleFunc("/", h.handler)
	log.Fatal(http.ListenAndServe(port, nil))
}