package main

import (
	"encoding/gob"
	"log"
	"net/http"
	"strings"

	lishwist "lishwist/core"
	"lishwist/http/api"
	"lishwist/http/env"
	"lishwist/http/router"
	"lishwist/http/routing"
	"lishwist/http/session"
)

func prefixMovedPermanently(before, after string) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		suffix := strings.TrimPrefix(r.RequestURI, before)
		http.Redirect(w, r, after+suffix, http.StatusMovedPermanently)
	}
}

func main() {
	gob.Register(&api.RegisterProps{})
	gob.Register(&api.LoginProps{})

	err := lishwist.Init(env.DatabaseFile)
	if err != nil {
		log.Fatalf("Failed to init Lishwist: %s\n", err)
	}

	store := session.NewInMemoryStore([]byte(env.SessionSecret))
	store.Options.MaxAge = 86_400 // 24 hours in seconds
	store.Options.Secure = !env.InDev
	store.Options.HttpOnly = true

	r := router.New(store)

	r.Public.HandleFunc("GET /", routing.Login)
	r.Public.HandleFunc("GET /groups/{groupReference}", routing.PublicGroup)
	r.Public.HandleFunc("GET /lists/{userReference}", routing.PublicWishlist)
	r.Public.HandleFunc("GET /register", routing.Register)
	r.Public.HandleFunc("POST /", routing.LoginPost)
	r.Public.HandleFunc("POST /register", routing.RegisterPost)

	r.Private.HandleFunc("GET /", routing.NotFound)
	r.Private.HandleFunc("GET /groups", routing.ExpectAppSession(routing.Groups))
	r.Private.HandleFunc("GET /groups/{groupReference}", routing.ExpectAppSession(routing.Group))
	r.Private.HandleFunc("GET /lists/{userReference}", routing.ExpectAppSession(routing.ForeignWishlist))
	r.Private.HandleFunc("GET /users", routing.ExpectAppSession(routing.Users))
	r.Private.HandleFunc("GET /users/{userReference}", routing.ExpectAppSession(routing.User))
	r.Private.HandleFunc("GET /{$}", routing.ExpectAppSession(routing.Home))
	r.Private.HandleFunc("POST /groups/{groupReference}", routing.ExpectAppSession(routing.GroupPost))
	r.Private.HandleFunc("POST /list/{userReference}", routing.ExpectAppSession(routing.ForeignWishlistPost))
	r.Private.HandleFunc("POST /logout", routing.LogoutPost)
	r.Private.HandleFunc("POST /users/{userReference}", routing.ExpectAppSession(routing.UserPost))
	r.Private.HandleFunc("POST /{$}", routing.ExpectAppSession(routing.HomePost))

	// Deprecated
	http.Handle("GET /group/{groupReference}", prefixMovedPermanently("/group/", "/groups/"))
	http.Handle("GET /list/{userReference}", prefixMovedPermanently("/list/", "/lists/"))

	http.Handle("/", r)

	log.Printf("Running at http://127.0.0.1:%s\n", env.ServePort)
	err = http.ListenAndServe(":"+env.ServePort, nil)
	if err != nil {
		log.Fatalln("Failed to listen and server:", err)
	}
}