MailInviteController.java

/*
 * Copyright 2010 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.springsource.greenhouse.invite.mail;

import javax.inject.Inject;
import javax.validation.Valid;

import org.springframework.core.io.ClassPathResource;
import org.springframework.stereotype.Controller;
import org.springframework.templating.ResourceStringTemplateFactory;
import org.springframework.templating.StringTemplate;
import org.springframework.templating.StringTemplateFactory;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import com.springsource.greenhouse.account.Account;
import com.springsource.greenhouse.utils.Message;

/**
 * UI Controller for sending email invites.
 * @author Keith Donald
 */
@Controller
public class MailInviteController {

	private final StringTemplateFactory inviteTemplateFactory = new ResourceStringTemplateFactory(new ClassPathResource("invite-text-body.st", getClass()));

	private final MailInviteService inviteService;
 
	@Inject
	public MailInviteController(MailInviteService inviteService) {
		this.inviteService = inviteService;
	}

	/**
	 * Render the mail invite form as HTML in the web browser.
	 * The invitation text is pre-populated with some standard text that may be customized by the sender.
	 */
	@RequestMapping(value="/invite/mail", method=RequestMethod.GET)
	public MailInviteForm invitePage(Account account) {
		MailInviteForm form = new MailInviteForm();
		form.setInvitationText(renderStandardInvitationText(account));
		return form;
	}

	/**
	 * Process the invite form submission and send out the invites.
	 * On success, redirect back to the invite form and render a success message.
	 */
	@RequestMapping(value="/invite/mail", method=RequestMethod.POST)
	public String sendInvites(@Valid MailInviteForm form, BindingResult result, Account account, RedirectAttributes redirectAttrs) {
		if (result.hasErrors()) {
			return null;
		}
		inviteService.sendInvite(account, form.getInvitees(),  form.getInvitationText());
		redirectAttrs.addFlashAttribute(Message.success("Your invitations have been sent"));
		return "redirect:/invite/mail";
	}
	
	// internal helpers
	
	private String renderStandardInvitationText(Account account) {
		StringTemplate template = inviteTemplateFactory.getStringTemplate();
		template.put("account", account);
		return template.render();
	}

}