/*
 * Copyright (C) 2016 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.android.dialer.app.voicemail.error;

import android.content.Context;
import android.support.annotation.VisibleForTesting;
import android.text.util.Linkify;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import com.android.dialer.app.alert.AlertManager;
import com.android.dialer.app.voicemail.error.VoicemailErrorMessage.Action;
import com.android.dialer.common.Assert;
import com.android.dialer.common.LogUtil;
import java.util.List;

/**
 * UI for the voicemail error message, which will be inserted to the top of the voicemail tab if any
 * occurred.
 */
public class VoicemailErrorAlert {

  private final Context context;
  private final AlertManager alertManager;
  private final VoicemailErrorMessageCreator messageCreator;

  private final View view;
  private final TextView header;
  private final TextView details;
  private final TextView primaryAction;
  private final TextView secondaryAction;
  private final TextView primaryActionRaised;
  private final TextView secondaryActionRaised;
  private final AlertManager modalAlertManager;
  private View modalView;

  public VoicemailErrorAlert(
      Context context,
      AlertManager alertManager,
      AlertManager modalAlertManager,
      VoicemailErrorMessageCreator messageCreator) {
    this.context = context;
    this.alertManager = alertManager;
    this.modalAlertManager = modalAlertManager;
    this.messageCreator = messageCreator;

    view = alertManager.inflate(R.layout.voicemail_error_message_fragment);
    header = (TextView) view.findViewById(R.id.error_card_header);
    details = (TextView) view.findViewById(R.id.error_card_details);
    primaryAction = (TextView) view.findViewById(R.id.primary_action);
    secondaryAction = (TextView) view.findViewById(R.id.secondary_action);
    primaryActionRaised = (TextView) view.findViewById(R.id.primary_action_raised);
    secondaryActionRaised = (TextView) view.findViewById(R.id.secondary_action_raised);
  }

  public void updateStatus(List<VoicemailStatus> statuses, VoicemailStatusReader statusReader) {
    LogUtil.i("VoicemailErrorAlert.updateStatus", "%d status", statuses.size());
    VoicemailErrorMessage message = null;
    view.setVisibility(View.VISIBLE);
    for (VoicemailStatus status : statuses) {
      message = messageCreator.create(context, status, statusReader);
      if (message != null) {
        break;
      }
    }

    alertManager.clear();
    modalAlertManager.clear();
    if (message != null) {
      LogUtil.i(
          "VoicemailErrorAlert.updateStatus",
          "isModal: %b, %s",
          message.isModal(),
          message.getTitle());
      if (message.isModal()) {
        if (message instanceof VoicemailTosMessage) {
          modalView = getTosView(modalAlertManager, (VoicemailTosMessage) message);
        } else {
          throw new IllegalArgumentException("Modal message type is undefined!");
        }
        modalAlertManager.add(modalView);
      } else {
        loadMessage(message);
        alertManager.add(view);
      }
    }
  }

  @VisibleForTesting
  public View getView() {
    return view;
  }

  @VisibleForTesting
  public View getModalView() {
    return modalView;
  }

  void loadMessage(VoicemailErrorMessage message) {
    header.setText(message.getTitle());
    details.setText(message.getDescription());
    bindActions(message);
  }

  private View getTosView(AlertManager alertManager, VoicemailTosMessage message) {
    View view = alertManager.inflate(R.layout.voicemail_tos_fragment);
    TextView tosTitle = (TextView) view.findViewById(R.id.tos_message_title);
    tosTitle.setText(message.getTitle());
    TextView tosDetails = (TextView) view.findViewById(R.id.tos_message_details);
    tosDetails.setAutoLinkMask(Linkify.WEB_URLS);
    tosDetails.setText(message.getDescription());

    Assert.checkArgument(message.getActions().size() == 2);
    Action primaryAction = message.getActions().get(0);
    TextView primaryButton = (TextView) view.findViewById(R.id.voicemail_tos_button_decline);
    primaryButton.setText(primaryAction.getText());
    primaryButton.setOnClickListener(primaryAction.getListener());
    Action secondaryAction = message.getActions().get(1);
    TextView secondaryButton = (TextView) view.findViewById(R.id.voicemail_tos_button_accept);
    secondaryButton.setText(secondaryAction.getText());
    secondaryButton.setOnClickListener(secondaryAction.getListener());

    if (message.getImageResourceId() != null) {
      ImageView voicemailTosImage = (ImageView) view.findViewById(R.id.voicemail_image);
      voicemailTosImage.setImageResource(message.getImageResourceId());
      voicemailTosImage.setVisibility(View.VISIBLE);
    }

    return view;
  }

  /**
   * Attach actions to buttons until all buttons are assigned. If there are not enough actions the
   * rest of the buttons will be removed. If there are more actions then buttons the extra actions
   * will be dropped. {@link VoicemailErrorMessage#getActions()} will specify what actions should be
   * shown and in what order.
   */
  private void bindActions(VoicemailErrorMessage message) {
    TextView[] buttons = new TextView[] {primaryAction, secondaryAction};
    TextView[] raisedButtons = new TextView[] {primaryActionRaised, secondaryActionRaised};
    for (int i = 0; i < buttons.length; i++) {
      if (message.getActions() != null && i < message.getActions().size()) {
        VoicemailErrorMessage.Action action = message.getActions().get(i);
        TextView button;
        if (action.isRaised()) {
          button = raisedButtons[i];
          buttons[i].setVisibility(View.GONE);
        } else {
          button = buttons[i];
          raisedButtons[i].setVisibility(View.GONE);
        }
        button.setText(action.getText());
        button.setOnClickListener(action.getListener());
        button.setVisibility(View.VISIBLE);
      } else {
        buttons[i].setVisibility(View.GONE);
        raisedButtons[i].setVisibility(View.GONE);
      }
    }
  }
}