/*
 * Copyright (C) 2015 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.documentsui.bots;

import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.assertNotNull;
import static junit.framework.Assert.assertTrue;

import android.content.Context;
import android.support.test.uiautomator.By;
import android.support.test.uiautomator.BySelector;
import android.support.test.uiautomator.Configurator;
import android.support.test.uiautomator.UiDevice;
import android.support.test.uiautomator.UiObject;
import android.support.test.uiautomator.UiObject2;
import android.support.test.uiautomator.UiObjectNotFoundException;
import android.support.test.uiautomator.UiSelector;
import android.support.test.uiautomator.Until;
import android.view.MotionEvent;

import junit.framework.Assert;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.regex.Pattern;

/**
 * A test helper class that provides support for controlling directory list
 * and making assertions against the state of it.
 */
public class DirectoryListBot extends BaseBot {
    private static final String DIR_LIST_ID = "com.android.documentsui:id/dir_list";

    private static final BySelector SNACK_DELETE =
            By.desc(Pattern.compile("^Deleting [0-9]+ file.+"));

    public DirectoryListBot(UiDevice device, Context context, int timeout) {
        super(device, context, timeout);
    }

    public void assertDocumentsCount(int count) throws UiObjectNotFoundException {
        UiObject docsList = findDocumentsList();
        assertEquals(count, docsList.getChildCount());
    }

    public void assertDocumentsPresent(String... labels) throws UiObjectNotFoundException {
        List<String> absent = new ArrayList<>();
        for (String label : labels) {
            if (!findDocument(label).exists()) {
                absent.add(label);
            }
        }
        if (!absent.isEmpty()) {
            Assert.fail("Expected documents " + Arrays.asList(labels)
                    + ", but missing " + absent);
        }
    }

    public void assertDocumentsAbsent(String... labels) throws UiObjectNotFoundException {
        List<String> found = new ArrayList<>();
        for (String label : labels) {
            if (findDocument(label).exists()) {
                found.add(label);
            }
        }
        if (!found.isEmpty()) {
            Assert.fail("Expected documents not present" + Arrays.asList(labels)
                    + ", but present " + found);
        }
    }

    public void assertDocumentsCountOnList(boolean exists, int count) throws UiObjectNotFoundException {
        UiObject docsList = findDocumentsList();
        assertEquals(exists, docsList.exists());
        if(docsList.exists()) {
            assertEquals(count, docsList.getChildCount());
        }
    }

    public void assertMessageTextView(String message) throws UiObjectNotFoundException {
        UiObject messageTextView = findMessageTextView();
        assertTrue(messageTextView.exists());

        String msg = String.valueOf(message);
        assertEquals(String.format(msg, "TEST_ROOT_0"), messageTextView.getText());

    }

    private UiObject findMessageTextView() {
        return findObject(
                "com.android.documentsui:id/container_directory",
                "com.android.documentsui:id/message");
    }

    public void assertSnackbar(int id) {
        assertNotNull(getSnackbar(mContext.getString(id)));
    }

    public void openDocument(String label) throws UiObjectNotFoundException {
        int toolType = Configurator.getInstance().getToolType();
        Configurator.getInstance().setToolType(MotionEvent.TOOL_TYPE_FINGER);
        UiObject doc = findDocument(label);
        doc.click();
        Configurator.getInstance().setToolType(toolType);
    }

    public void clickDocument(String label) throws UiObjectNotFoundException {
        findDocument(label).click();
    }

    public UiObject selectDocument(String label) throws UiObjectNotFoundException {
        UiObject doc = findDocument(label);
        doc.longClick();
        return doc;
    }

    public UiObject2 getSnackbar(String message) {
        return mDevice.wait(Until.findObject(By.text(message)), mTimeout);
    }

    public void waitForDeleteSnackbar() {
        mDevice.wait(Until.findObject(SNACK_DELETE), mTimeout);
    }

    public void waitForDeleteSnackbarGone() {
        // wait a little longer for snackbar to go away, as it disappears after a timeout.
        mDevice.wait(Until.gone(SNACK_DELETE), mTimeout * 2);
    }

    public void waitForDocument(String label) throws UiObjectNotFoundException {
        findDocument(label).waitForExists(mTimeout);
    }

    public UiObject findDocument(String label) throws UiObjectNotFoundException {
        final UiSelector docList = new UiSelector().resourceId(
                "com.android.documentsui:id/container_directory").childSelector(
                        new UiSelector().resourceId(DIR_LIST_ID));

        // Wait for the first list item to appear
        new UiObject(docList.childSelector(new UiSelector())).waitForExists(mTimeout);

        // new UiScrollable(docList).scrollIntoView(new UiSelector().text(label));
        return mDevice.findObject(docList.childSelector(new UiSelector().text(label)));
    }

    public boolean hasDocuments(String... labels) throws UiObjectNotFoundException {
        for (String label : labels) {
            if (!findDocument(label).exists()) {
                return false;
            }
        }
        return true;
    }

    private UiObject findDocumentsList() {
        return findObject(
                "com.android.documentsui:id/container_directory",
                DIR_LIST_ID);
    }

    public void assertHasFocus() {
        assertHasFocus(DIR_LIST_ID);
    }
}