// Copyright (C) 2009 The Android Open Source Project
//
// 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.google.gerrit.server.mail;

import com.google.gerrit.server.config.AuthConfig;
import com.google.gwtjsonrpc.server.XsrfException;
import com.google.inject.Inject;
import com.google.inject.assistedinject.Assisted;

import org.eclipse.jgit.util.Base64;

import java.io.UnsupportedEncodingException;

public class RegisterNewEmailSender extends OutgoingEmail {
  public interface Factory {
    public RegisterNewEmailSender create(String address);
  }

  private final AuthConfig authConfig;
  private final String addr;

  @Inject
  public RegisterNewEmailSender(EmailArguments ea, AuthConfig ac,
      @Assisted final String address) {
    super(ea, "registernewemail");
    authConfig = ac;
    addr = address;
  }

  @Override
  protected void init() throws EmailException {
    super.init();
    setHeader("Subject", "[Gerrit Code Review] Email Verification");
    add(RecipientType.TO, new Address(addr));
  }

  @Override
  protected boolean shouldSendMessage() {
    return true;
  }

  @Override
  protected void format() throws EmailException {
    appendText(velocifyFile("RegisterNewEmail.vm"));
  }

  public String getEmailRegistrationToken() {
    try {
      return authConfig.getEmailRegistrationToken().newToken(
          Base64.encodeBytes(addr.getBytes("UTF-8")));
    } catch (XsrfException e) {
      throw new IllegalArgumentException(e);
    } catch (UnsupportedEncodingException e) {
      throw new IllegalArgumentException(e);
    }
  }
}