package users

import (
	"fmt"
	"net/http"

	"github.com/gorilla/Schema"

	"gitlab.quimbo.fr/odwrtw/canape-sql/auth"
	"gitlab.quimbo.fr/odwrtw/canape-sql/web"
)

func LoginHandler(e *web.Env, w http.ResponseWriter, r *http.Request) error {
	if r.Method == "GET" {
		return e.Rends(w, r, "users/login")
	}

	type loginForm struct {
		Username string
		Password string
	}

	err := r.ParseForm()
	if err != nil {
		return err
	}

	form := new(loginForm)
	decoder := schema.NewDecoder()
	err = decoder.Decode(form, r.PostForm)
	if err != nil {
		return err
	}

	err = e.Auth.Login(w, r, form.Username, form.Password)
	if err != nil {
		if err == auth.ErrInvalidPassword || err == ErrUnknownUser {
			web.SetData(r, "FormErrors", "Error invalid user or password")
			return e.Rends(w, r, "users/login")
		}
		return err
	}

	//TODO: redirect to user details or to previous location
	return nil
}

func LogoutHandler(e *web.Env, w http.ResponseWriter, r *http.Request) error {
	e.Auth.Logout(w, r)
	//TODO: redirect to login page
	return nil
}

func DetailsHandler(e *web.Env, w http.ResponseWriter, r *http.Request) error {
	u := auth.GetCurrentUser(r)
	if u == nil {
		return nil
	}
	_, ok := u.(*User)
	if !ok {
		return fmt.Errorf("Invalid user type")
	}
	return nil
}