/*
*    Copyright [2011] [wisemapping]
*
*   Licensed under WiseMapping Public License, Version 1.0 (the "License").
*   It is basically the Apache License, Version 2.0 (the "License") plus the
*   "powered by wisemapping" text requirement on every single page;
*   you may not use this file except in compliance with the License.
*   You may obtain a copy of the license at
*
*       http://www.wisemapping.org/license
*
*   Unless required by applicable law or agreed to in writing, software
*   distributed under the License is distributed on an "AS IS" BASIS,
*   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*   See the License for the specific language governing permissions and
*   limitations under the License.
*/

package com.wisemapping.ncontroller;


import com.wisemapping.controller.Messages;
import com.wisemapping.exceptions.WiseMappingException;
import com.wisemapping.model.User;
import com.wisemapping.service.InvalidUserEmailException;
import com.wisemapping.service.UserService;
import com.wisemapping.validator.UserValidator;
import com.wisemapping.view.UserBean;
import net.tanesha.recaptcha.ReCaptcha;
import net.tanesha.recaptcha.ReCaptchaResponse;
import org.jetbrains.annotations.NotNull;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import java.util.Properties;

@Controller
public class UsersController {

    @Qualifier("userService")
    @Autowired
    private UserService userService;

    @Value("${registration.email.enabled}")
    boolean emailConfirmEnabled;

    @Autowired
    private ReCaptcha captchaService;

    @Value("${registration.recaptcha.enabled}")
    private boolean captchaEnabled;


    @RequestMapping(value = "user/resetPassword", method = RequestMethod.GET)
    public ModelAndView showResetPasswordPage() {
        return new ModelAndView("forgotPassword");
    }

    @RequestMapping(value = "user/resetPassword", method = RequestMethod.POST)
    public ModelAndView resetPassword(@RequestParam(required = true) String email) {

        ModelAndView result;
        try {
            userService.resetPassword(email);
            result = new ModelAndView("forgotPasswordSuccess");

        } catch (InvalidUserEmailException e) {
            result = new ModelAndView("forgotPasswordError");

        }
        return result;
    }

    @RequestMapping(value = "user/registration", method = RequestMethod.GET)
    public ModelAndView showRegistrationPage(@NotNull HttpServletRequest request) {
        if (captchaEnabled) {
            // If captcha is enabled, generate it ...
            final Properties prop = new Properties();
            prop.put("theme", "white");

            final String captchaHtml = captchaService.createRecaptchaHtml(null, prop);
            request.setAttribute("captchaHtml", captchaHtml);
            request.setAttribute("captchaEnabled", true);
        }
        return new ModelAndView("userRegistration", "user", new UserBean());
    }

    @RequestMapping(value = "user/registration", method = RequestMethod.POST)
    public ModelAndView registerUser(@ModelAttribute("user") UserBean userBean, @NotNull HttpServletRequest request, @NotNull BindingResult bindingResult) throws WiseMappingException {
        ModelAndView result;
        validateRegistrationForm(userBean, request, bindingResult);
        if (bindingResult.hasErrors()) {
            result = this.showRegistrationPage(request);
            result.addObject("user", userBean);
        } else {
            final User user = new User();

            // trim() the email email in order to remove spaces ...
            user.setEmail(userBean.getEmail().trim());
            user.setUsername(userBean.getUsername());
            user.setFirstname(userBean.getFirstname());
            user.setLastname(userBean.getLastname());
            user.setPassword(userBean.getPassword());
            userService.createUser(user, emailConfirmEnabled);

            // Forward to the success view ...
            result = new ModelAndView("userRegistrationSuccess");
            result.addObject("confirmByEmail", emailConfirmEnabled);
        }
        return result;
    }

    private BindingResult validateRegistrationForm(@NotNull UserBean userBean, @NotNull HttpServletRequest request, @NotNull BindingResult bindingResult) {
        final UserValidator userValidator = new UserValidator();
        userValidator.setUserService(userService);
        userValidator.setCaptchaService(captchaService);
        userValidator.validate(userBean, bindingResult);

        // If captcha is enabled, generate it ...
        if (captchaEnabled) {
            final String challenge = request.getParameter("recaptcha_challenge_field");
            final String uresponse = request.getParameter("recaptcha_response_field");

            final String remoteAddr = request.getRemoteAddr();
            final ReCaptchaResponse reCaptchaResponse = captchaService.checkAnswer(remoteAddr, challenge, uresponse);
            if (!reCaptchaResponse.isValid()) {
                bindingResult.rejectValue("captcha", Messages.CAPTCHA_ERROR);
            }
        }
        return bindingResult;
    }
}