/*
 * Copyright (C) 2007 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.phone.settings.fdn;

import android.app.ActionBar;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.net.Uri;
import android.os.Bundle;
import android.os.PersistableBundle;
import android.telecom.PhoneAccount;
import android.telephony.CarrierConfigManager;
import android.telephony.SubscriptionManager;
import android.text.TextUtils;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ListView;
import android.widget.PopupMenu;
import android.widget.PopupMenu.OnMenuItemClickListener;

import com.android.phone.ADNList;
import com.android.phone.PhoneGlobals;
import com.android.phone.R;
import com.android.phone.SubscriptionInfoHelper;

/**
 * Fixed Dialing Number (FDN) List UI for the Phone app. FDN is a feature of the service provider
 * that allows a user to specify a limited set of phone numbers that the SIM can dial.
 */
public class FdnList extends ADNList {
    private class SelectionPopupMenu extends PopupMenu {
        private OnMenuItemClickListener mMenuItemListener = new OnMenuItemClickListener() {

            @Override
            public boolean onMenuItemClick(MenuItem item) {
                if (item.getItemId() == MENU_EDIT) {
                    editSelected(position);
                } else if (item.getItemId() == MENU_DELETE) {
                    deleteSelected(position);
                } else if (item.getItemId() == MENU_DIAL) {
                    dialSelected(position);
                }
                return true;
            }
        };

        private final int position;

        public SelectionPopupMenu(Context context, View anchor, int position) {
            super(context, anchor, Gravity.RIGHT);
            this.position = position;
        }

        public void showPopUp() {
            getMenu().add(0, MENU_EDIT, 0, getString(R.string.menu_edit));
            getMenu().add(0, MENU_DELETE, 0, getString(R.string.menu_delete));
            if (mFdnDialDirectlySupported) {
                getMenu().add(0, MENU_DIAL, 0, getString(R.string.menu_dial));
            }
            setOnMenuItemClickListener(mMenuItemListener);
            show();
        }
    }

    private static final int MENU_ADD = 1;
    private static final int MENU_EDIT = 2;
    private static final int MENU_DELETE = 3;
    private static final int MENU_DIAL = 4;

    private static final String INTENT_EXTRA_NAME = "name";
    private static final String INTENT_EXTRA_NUMBER = "number";

    private static final Uri FDN_CONTENT_URI = Uri.parse("content://icc/fdn");
    private static final String FDN_CONTENT_PATH_WITH_SUB_ID = "content://icc/fdn/subId/";

    private SubscriptionInfoHelper mSubscriptionInfoHelper;

    private boolean mFdnDialDirectlySupported = false;
    private SelectionPopupMenu mPopup;

    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);

        ActionBar actionBar = getActionBar();
        if (actionBar != null) {
            // android.R.id.home will be triggered in onOptionsItemSelected()
            actionBar.setDisplayHomeAsUpEnabled(true);
        }

        mSubscriptionInfoHelper = new SubscriptionInfoHelper(this, getIntent());
        mSubscriptionInfoHelper.setActionBarTitle(
                getActionBar(), getResources(), R.string.fdn_list_with_label);
    }

    @Override
    protected void onResume() {
        super.onResume();
        mFdnDialDirectlySupported = getFdnDialDirectlySupported();
    }

    @Override
    protected void onStop() {
        super.onStop();
        if (mPopup != null) {
            mPopup.dismiss();
        }
    }

    @Override
    protected Uri resolveIntent() {
        Intent intent = getIntent();
        intent.setData(getContentUri(mSubscriptionInfoHelper));
        return intent.getData();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);

        Resources r = getResources();

        // Added the icons to the context menu
        menu.add(0, MENU_ADD, 0, r.getString(R.string.menu_add))
                .setIcon(android.R.drawable.ic_menu_add);
        menu.add(0, MENU_EDIT, 0, r.getString(R.string.menu_edit))
                .setIcon(android.R.drawable.ic_menu_edit);
        menu.add(0, MENU_DELETE, 0, r.getString(R.string.menu_delete))
                .setIcon(android.R.drawable.ic_menu_delete);
        menu.add(0, MENU_DIAL, 0, r.getString(R.string.menu_dial));
        return true;
    }

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        super.onPrepareOptionsMenu(menu);
        boolean hasSelection = (getSelectedItemPosition() >= 0);

        menu.findItem(MENU_ADD).setVisible(true);
        menu.findItem(MENU_EDIT).setVisible(hasSelection);
        menu.findItem(MENU_DELETE).setVisible(hasSelection);
        menu.findItem(MENU_DIAL).setVisible(hasSelection && mFdnDialDirectlySupported);

        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:  // See ActionBar#setDisplayHomeAsUpEnabled()
                Intent intent = mSubscriptionInfoHelper.getIntent(FdnSetting.class);
                intent.setAction(Intent.ACTION_MAIN);
                intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                startActivity(intent);
                finish();
                return true;

            case MENU_ADD:
                addContact();
                return true;

            case MENU_EDIT:
                editSelected();
                return true;

            case MENU_DELETE:
                deleteSelected();
                return true;

            case MENU_DIAL:
                dialSelected();
                return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        mPopup = new SelectionPopupMenu(this, v, position);
        mPopup.showPopUp();
    }

    private void addContact() {
        //If there is no INTENT_EXTRA_NAME provided, EditFdnContactScreen treats it as an "add".
        Intent intent = mSubscriptionInfoHelper.getIntent(EditFdnContactScreen.class);
        startActivity(intent);
    }

    /**
     * Overloaded to call editSelected with the current selection
     * by default.  This method may have a problem with touch UI
     * since touch UI does not really have a concept of "selected"
     * items.
     */
    private void editSelected() {
        editSelected(getSelectedItemPosition());
    }

    /**
     * Edit the item at the selected position in the list.
     */
    private void editSelected(int position) {
        if (mCursor.moveToPosition(position)) {
            String name = mCursor.getString(NAME_COLUMN);
            String number = mCursor.getString(NUMBER_COLUMN);

            Intent intent = mSubscriptionInfoHelper.getIntent(EditFdnContactScreen.class);
            intent.putExtra(INTENT_EXTRA_NAME, name);
            intent.putExtra(INTENT_EXTRA_NUMBER, number);
            startActivity(intent);
        }
    }

    private void deleteSelected() {
        deleteSelected(getSelectedItemPosition());
    }

    private void deleteSelected(int position) {
        if (mCursor.moveToPosition(position)) {
            String name = mCursor.getString(NAME_COLUMN);
            String number = mCursor.getString(NUMBER_COLUMN);

            Intent intent = mSubscriptionInfoHelper.getIntent(DeleteFdnContactScreen.class);
            intent.putExtra(INTENT_EXTRA_NAME, name);
            intent.putExtra(INTENT_EXTRA_NUMBER, number);
            startActivity(intent);
        }
    }

    private void dialSelected() {
        dialSelected(getSelectedItemPosition());
    }

    private void dialSelected(int position) {
        if (mCursor.moveToPosition(position)) {
            String number = mCursor.getString(NUMBER_COLUMN);
            if (!TextUtils.isEmpty(number)) {
                Uri uri = Uri.fromParts(PhoneAccount.SCHEME_TEL, number, null);
                final Intent intent = new Intent(Intent.ACTION_CALL_PRIVILEGED, uri);
                startActivity(intent);
            }
        }
    }

    /**
     * Returns the uri for updating the ICC FDN entry, taking into account the subscription id.
     */
    public static Uri getContentUri(SubscriptionInfoHelper subscriptionInfoHelper) {
        return subscriptionInfoHelper.hasSubId()
                ? Uri.parse(FDN_CONTENT_PATH_WITH_SUB_ID + subscriptionInfoHelper.getSubId())
                : FDN_CONTENT_URI;
    }

    /*
     * Get the config of whether dialing FDN number from FDN list directly is supported
     * from carrier config manager.
     *
     * @return boolean value of the config
     */
    private boolean getFdnDialDirectlySupported() {
        int subId = mSubscriptionInfoHelper.hasSubId()
                ? mSubscriptionInfoHelper.getSubId()
                : SubscriptionManager.getDefaultSubscriptionId();
        PersistableBundle carrierConfig =
                PhoneGlobals.getInstance().getCarrierConfigForSubId(subId);
        return carrierConfig.getBoolean(CarrierConfigManager.KEY_SUPPORT_DIRECT_FDN_DIALING_BOOL);
    }
}