package server

import (
	"bytes"
	"context"
	"github.com/gorilla/mux"
	"html/template"
	"net"
	"net/http"
	"time"

	"git.giftfish.de/ston1th/gowiki/pkg/db"
	"git.giftfish.de/ston1th/gowiki/pkg/log"
	"git.giftfish.de/ston1th/jwt"
)

const (
	cookieName = "gosession"
)

type HTTPServer struct {
	Version   string
	indexPath string
	listener  net.Listener
	srv       *http.Server

	DB  *db.DB
	JWT *jwt.JWT

	templ map[string]*template.Template
	res   map[string][]byte
}

func NewHTTPServer(l net.Listener, version, indexPath string, secCookie bool) (srv *HTTPServer) {
	srv = &HTTPServer{
		Version:  version,
		listener: l,
	}
	srv.loadTemplates()
	srv.srv = &http.Server{
		Handler: srv.buildRoutes(),
	}
	return
}

func (s *HTTPServer) Start() (err error) {
	//TODO make secret configurable
	buf := bytes.NewBufferString("be688838ca8686e5c90689bf2ab585cef1137c999b48c70b92f67a5c34dc15697b5d11c982ed6d71be1e1e7f7b4e0733884aa97c3f7a339a8ed03577cf74be09")
	s.JWT, err = jwt.New(jwt.DefaultExpiry, jwt.NewMemBlacklist(), buf)
	if err != nil {
		return
	}
	s.DB, err = db.New(s.indexPath)
	if err != nil {
		return
	}
	go func() {
		log.Println(s.srv.Serve(s.listener))
	}()
	return
}

func (s *HTTPServer) Stop() error {
	s.DB.Close()
	s.JWT.Stop()
	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
	defer cancel()
	return s.srv.Shutdown(ctx)
}

func (s *HTTPServer) buildRoutes() http.Handler {
	m := mux.NewRouter()
	m.NotFoundHandler = &notFoundHandler{s}
	for _, v := range routes {
		m.HandleFunc(v.Path, s.contextWrapper(v.Handler)).Methods(v.Methods...)
	}
	return m
}
func (s *HTTPServer) contextWrapper(h ctxHandler) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		h(newContext(w, r, s))
	}
}