
/*
 * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
 *
 * 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 net.micode.notes.gtask.remote;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;

import net.micode.notes.R;
import net.micode.notes.ui.NotesListActivity;
import net.micode.notes.ui.NotesPreferenceActivity;

/**
 * GTaskASyncTask 是一个异步任务类，用于在后台执行 GTasks 同步操作。
 */
public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {

    /**
     * GTASK_SYNC_NOTIFICATION_ID 是通知的 ID。
     */
    private static int GTASK_SYNC_NOTIFICATION_ID = 5234235;

    /**
     * OnCompleteListener 是异步任务完成时的回调接口。
     */
    public interface OnCompleteListener {
        void onComplete();
    }

    private Context mContext; // 上下文

    private NotificationManager mNotifiManager; // 通知管理器

    private GTaskManager mTaskManager; // GTasks 管理器

    private OnCompleteListener mOnCompleteListener; // 异步任务完成时的回调接口

    /**
     * 创建一个 GTaskASyncTask 对象。
     *
     * @param context   上下文
     * @param listener  异步任务完成时的回调接口
     */
    public GTaskASyncTask(Context context, OnCompleteListener listener) {
        mContext = context;
        mOnCompleteListener = listener;
        mNotifiManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
        mTaskManager = GTaskManager.getInstance();
    }
}
    /**
     * 取消同步操作。
     */
    public void cancelSync() {
        mTaskManager.cancelSync(); // 调用TaskManager的cancelSync方法取消同步操作
    }

    /**
     * 发布进度更新。
     *
     * @param message 进度消息
     */
    public void publishProgess(String message) {
        publishProgress(new String[]{
                message
        }); // 调用AsyncTask的publishProgress方法发布进度更新
    }

    /**
     * 显示通知。
     *
     * @param tickerId 通知 ID
     * @param content  通知内容
     */
    private void showNotification(int tickerId, String content) {
        Notification notification = new Notification(R.drawable.notification, mContext.getString(tickerId), System.currentTimeMillis()); // 创建一个通知对象
        notification.defaults = Notification.DEFAULT_LIGHTS; // 设置通知的默认灯光
        notification.flags = Notification.FLAG_AUTO_CANCEL; // 设置通知的自动取消标志
        PendingIntent pendingIntent;
        if (tickerId != R.string.ticker_success) { // 如果通知ID不是成功通知的ID
            pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext, NotesPreferenceActivity.class), 0); // 创建一个启动PreferencesActivity的PendingIntent
        } else {
            pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext, NotesListActivity.class), 0); // 创建一个启动NotesListActivity的PendingIntent
        }
        notification.setLatestEventInfo(mContext, mContext.getString(R.string.app_name), content, pendingIntent); // 设置通知的最新事件信息
        mNotifiManager.notify(GTASK_SYNC_NOTIFICATION_ID, notification); // 发送通知
    }

    @Override
    protected Integer doInBackground(Void... unused) {
        publishProgess(mContext.getString(R.string.sync_progress_login, NotesPreferenceActivity.getSyncAccountName(mContext))); // 发布进度更新，显示登录进度
        return mTaskManager.sync(mContext, this); // 调用TaskManager的sync方法进行同步操作
    }

    @Override
    protected void onProgressUpdate(String... progress) {
        showNotification(R.string.ticker_syncing, progress[0]); // 显示同步中的通知
        if (mContext instanceof GTaskSyncService) {
            ((GTaskSyncService) mContext).sendBroadcast(progress[0]); // 向GTaskSyncService发送广播
        }
    }
    @Override
    protected void onPostExecute(Integer result) {
        if (result == GTaskManager.STATE_SUCCESS) { // 如果同步成功
            showNotification(R.string.ticker_success, mContext.getString(
                    R.string.success_sync_account, mTaskManager.getSyncAccount())); // 显示成功通知，包括账户信息
            NotesPreferenceActivity.setLastSyncTime(mContext, System.currentTimeMillis()); // 更新上次同步时间
        } else if (result == GTaskManager.STATE_NETWORK_ERROR) { // 如果网络错误
            showNotification(R.string.ticker_fail, mContext.getString(R.string.error_sync_network)); // 显示网络错误通知
        } else if (result == GTaskManager.STATE_INTERNAL_ERROR) { // 如果内部错误
            showNotification(R.string.ticker_fail, mContext.getString(R.string.error_sync_internal)); // 显示内部错误通知
        } else if (result == GTaskManager.STATE_SYNC_CANCELLED) { // 如果同步被取消
            showNotification(R.string.ticker_cancel, mContext
                    .getString(R.string.error_sync_cancelled)); // 显示同步取消通知
        }

        if (mOnCompleteListener != null) { // 如果存在完成监听器
            new Thread(new Runnable() {
                public void run() {
                    mOnCompleteListener.onComplete(); // 在新线程中调用完成监听器的onComplete方法
                }
            }).start();
        }
    }
