package web

import (
	"log"
	root "marmic/servicetrade-toolbox"
	"marmic/servicetrade-toolbox/internal/api"
	"marmic/servicetrade-toolbox/internal/middleware"
	"net/http"
	"strings"
)

func LoginHandler(w http.ResponseWriter, r *http.Request) {
	if r.Method == "GET" {
		root.WebTemplates.ExecuteTemplate(w, "login.html", nil)
		return
	}

	if r.Method == "POST" {
		email := r.FormValue("email")
		password := r.FormValue("password")

		session := api.NewSession()
		err := session.Login(email, password)
		if err != nil {
			if r.Header.Get("HX-Request") == "true" {
				w.Write([]byte("<div class='error'>Login failed: " + err.Error() + "</div>"))
			} else {
				http.Error(w, "Login failed", http.StatusUnauthorized)
			}
			return
		}

		cookieParts := strings.Split(session.Cookie, ";")
		sessionID := strings.TrimPrefix(cookieParts[0], "PHPSESSID=")

		middleware.SessionStore.Set(sessionID, session)

		http.SetCookie(w, &http.Cookie{
			Name:     "PHPSESSID",
			Value:    sessionID,
			Path:     "/",
			HttpOnly: true,
			Secure:   r.TLS != nil,
			SameSite: http.SameSiteLaxMode,
		})

		if r.Header.Get("HX-Request") == "true" {
			w.Header().Set("HX-Redirect", "/")
			w.WriteHeader(http.StatusOK)
			w.Write([]byte("Login successful"))
		} else {
			http.Redirect(w, r, "/", http.StatusSeeOther)
		}
	}
}

func LogoutHandler(w http.ResponseWriter, r *http.Request) {
	cookie, err := r.Cookie("PHPSESSID")
	if err != nil {
		log.Printf("No session cookie found: %v", err)
		redirectToLogin(w, r)
		return
	}

	sessionID := cookie.Value
	session, exists := middleware.SessionStore.Get(sessionID)
	if !exists {
		log.Println("No session found in store")
		redirectToLogin(w, r)
		return
	}

	err = session.Logout()
	if err != nil {
		log.Printf("Logout failed: %v", err)
		http.Error(w, "Logout failed", http.StatusInternalServerError)
		return
	}

	middleware.SessionStore.Delete(sessionID)

	http.SetCookie(w, &http.Cookie{
		Name:     "PHPSESSID",
		Value:    "",
		Path:     "/",
		MaxAge:   -1,
		HttpOnly: true,
		Secure:   r.TLS != nil,
		SameSite: http.SameSiteLaxMode,
	})

	log.Println("Logout successful, redirecting to login page")
	redirectToLogin(w, r)
}

func redirectToLogin(w http.ResponseWriter, r *http.Request) {
	if r.Header.Get("HX-Request") != "" {
		w.Header().Set("HX-Redirect", "/login")
		w.WriteHeader(http.StatusOK)
	} else {
		http.Redirect(w, r, "/login", http.StatusSeeOther)
	}
}