package main

import (
	"log"
	"net/http"
	"os"
	"path"
	"path/filepath"
	"strconv"
	"time"

	"github.com/go-chi/chi/v5"
	"github.com/go-chi/chi/v5/middleware"
	"github.com/google/uuid"

	"github.com/neonxp/sendsafe/internal/renderer"
	"github.com/neonxp/sendsafe/internal/storer"
)

var workDir, _ = os.Getwd()

func main() {
	s, err := storer.New(path.Join(workDir, "memos.db"))
	if err != nil {
		log.Fatal(err)
	}
	r := chi.NewRouter()
	r.Use(middleware.Logger)
	r.Use(middleware.Recoverer)
	r.Use(middleware.Compress(9))

	tpl, err := renderer.New(path.Join(workDir, "templates"))
	if err != nil {
		log.Fatal(err)
	}

	r.Get("/", func(rw http.ResponseWriter, _ *http.Request) {
		csrf := uuid.NewString()
		http.SetCookie(rw, &http.Cookie{
			Name:     "csrf",
			Value:    csrf,
			Expires:  time.Now().Add(30 * time.Minute),
			HttpOnly: true,
		})

		if err := tpl.Render("index.gohtml", renderer.Map{"csrf": csrf}, rw); err != nil {
			log.Println(err)
			_ = tpl.Render("error.gohtml", nil, rw)
		}
	})

	r.Post("/save", func(rw http.ResponseWriter, r *http.Request) {
		if err := r.ParseForm(); err != nil {
			log.Println(err)
			_ = tpl.Render("error.gohtml", nil, rw)
			return
		}
		secret := r.FormValue("secret")
		days, err := strconv.Atoi(r.FormValue("days"))
		if err != nil {
			log.Println(err)
			_ = tpl.Render("error.gohtml", nil, rw)
			return
		}
		hours, err := strconv.Atoi(r.FormValue("hours"))
		if err != nil {
			log.Println(err)
			_ = tpl.Render("error.gohtml", nil, rw)
			return
		}
		minutes, err := strconv.Atoi(r.FormValue("minutes"))
		if err != nil {
			log.Println(err)
			_ = tpl.Render("error.gohtml", nil, rw)
			return
		}
		pin := r.FormValue("pin")
		csrf := r.FormValue("csrf")
		csrfCookie, err := r.Cookie("csrf")
		if err != nil {
			log.Println(err)
			_ = tpl.Render("error.gohtml", nil, rw)
			return
		}
		if csrfCookie.Value != csrf {
			log.Println(err)
			_ = tpl.Render("error.gohtml", nil, rw)
			return
		}
		ttl := days*24*60 + hours*60 + minutes
		id, err := s.Save(secret, pin, ttl)
		if err != nil {
			log.Println(err)
			_ = tpl.Render("error.gohtml", nil, rw)
			return
		}
		if err := tpl.Render("save.gohtml", renderer.Map{"id": id}, rw); err != nil {
			log.Println(err)
			_ = tpl.Render("error.gohtml", nil, rw)
		}
	})

	r.Get("/s/{id}", func(rw http.ResponseWriter, r *http.Request) {
		id := chi.URLParam(r, "id")
		if err != nil {
			log.Println(err)
			_ = tpl.Render("notfound.gohtml", nil, rw)
			return
		}
		_, err := s.IsEncrypted(id)
		if err != nil {
			log.Println(err)
			_ = tpl.Render("notfound.gohtml", nil, rw)
			return
		}
		if err := tpl.Render("memo.gohtml", renderer.Map{"id": id}, rw); err != nil {
			log.Println(err)
			_ = tpl.Render("error.gohtml", nil, rw)
		}
	})

	r.Get("/api/s/{id}", func(rw http.ResponseWriter, r *http.Request) {
		id := chi.URLParam(r, "id")
		secret, err := s.Get(id, "")
		if err != nil {
			log.Println(err)
			_ = tpl.Render("notfoundinline.gohtml", nil, rw)
			return
		}
		if err := tpl.Render("secret.gohtml", renderer.Map{"secret": secret}, rw); err != nil {
			log.Println(err)
			_ = tpl.Render("notfoundinline.gohtml", nil, rw)
		}
	})

	filesDir := http.Dir(filepath.Join(workDir, "public"))

	r.Get("/*", func(w http.ResponseWriter, r *http.Request) {
		fs := http.StripPrefix("/", http.FileServer(filesDir))
		fs.ServeHTTP(w, r)
	})

	if err := http.ListenAndServe(":3000", r); err != nil {
		log.Fatal(err)
	}
}