
/*
 * 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- 用于在后台执行Google Tasks同步操作的异步任务
 */
public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {

    /**
     * 同步通知ID常量 - 用于标识Google Tasks同步通知
     */
    private static int GTASK_SYNC_NOTIFICATION_ID = 5234235;

    /**
     * OnCompleteListener接口 - 同步完成时的回调接口
     */
    public interface OnCompleteListener {
        /**
         * 同步完成时调用
         */
        void onComplete();
    }

    /**
     * 上下文对象 - 用于访问系统服务和资源
     */
    private Context mContext;

    /**
     * 通知管理器 - 用于显示同步通知
     */
    private NotificationManager mNotifiManager;

    /**
     * 任务管理器 - 用于执行实际的同步操作
     */
    private GTaskManager mTaskManager;

    /**
     * 完成监听器 - 同步完成时的回调对象
     */
    private OnCompleteListener mOnCompleteListener;

    /**
     * 构造函数 - 初始化Google Tasks异步任务
     * @param context 上下文对象
     * @param listener 同步完成时的回调监听器
     */
    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();
    }

    /**
     * 发布同步进度
     * @param message 进度消息
     */
    public void publishProgess(String message) {
        publishProgress(new String[] {
            message
        });
    }

    //private void showNotification(int tickerId, String content) {
    //    Notification notification = new Notification(R.drawable.notification, mContext
    //            .getString(tickerId), System.currentTimeMillis());
    //    notification.defaults = Notification.DEFAULT_LIGHTS;
    //    notification.flags = Notification.FLAG_AUTO_CANCEL;
    //   PendingIntent pendingIntent;
    //    if (tickerId != R.string.ticker_success) {
    //      pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
    //                NotesPreferenceActivity.class), 0);
    //
    //    } else {
    //        pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
    //                NotesListActivity.class), 0);
    //    }
    //    notification.setLatestEventInfo(mContext, mContext.getString(R.string.app_name), content,
    //            pendingIntent);
    //    mNotifiManager.notify(GTASK_SYNC_NOTIFICATION_ID, notification);
    //}
    /**
     * 显示同步通知
     * @param tickerId 通知标题的字符串资源ID
     * @param content 通知内容
     */
    private void showNotification(int tickerId, String content) {
        PendingIntent pendingIntent;
        if (tickerId != R.string.ticker_success) {
            // 同步失败时，点击通知跳转到设置页面
            pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
                    NotesPreferenceActivity.class), PendingIntent.FLAG_IMMUTABLE);
        } else {
            // 同步成功时，点击通知跳转到笔记列表页面
            pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
                    NotesListActivity.class), PendingIntent.FLAG_IMMUTABLE);
        }
        // 创建通知构建器
        Notification.Builder builder = new Notification.Builder(mContext)
                .setAutoCancel(true) // 点击后自动取消通知
                .setContentTitle(mContext.getString(R.string.app_name)) // 设置通知标题
                .setContentText(content) // 设置通知内容
                .setContentIntent(pendingIntent) // 设置点击通知时的跳转意图
                .setWhen(System.currentTimeMillis()) // 设置通知时间
                .setOngoing(true); // 设置为持续通知
        Notification notification=builder.getNotification();
        mNotifiManager.notify(GTASK_SYNC_NOTIFICATION_ID, notification); // 显示通知
    }


    @Override
    protected Integer doInBackground(Void... unused) {
        publishProgess(mContext.getString(R.string.sync_progress_login, NotesPreferenceActivity
                .getSyncAccountName(mContext)));
        return mTaskManager.sync(mContext, this);
    }

    @Override
    protected void onProgressUpdate(String... progress) {
        showNotification(R.string.ticker_syncing, progress[0]);
        if (mContext instanceof GTaskSyncService) {
            ((GTaskSyncService) mContext).sendBroadcast(progress[0]);
        }
    }

    @Override
    protected void onPostExecute(Integer result) {
        if (result == GTaskManager.STATE_SUCCESS) {
            showNotification(R.string.ticker_success, mContext.getString(
                    R.string.success_sync_account, mTaskManager.getSyncAccount()));
            NotesPreferenceActivity.setLastSyncTime(mContext, System.currentTimeMillis());
        } else if (result == GTaskManager.STATE_NETWORK_ERROR) {
            showNotification(R.string.ticker_fail, mContext.getString(R.string.error_sync_network));
        } else if (result == GTaskManager.STATE_INTERNAL_ERROR) {
            showNotification(R.string.ticker_fail, mContext.getString(R.string.error_sync_internal));
        } else if (result == GTaskManager.STATE_SYNC_CANCELLED) {
            showNotification(R.string.ticker_cancel, mContext
                    .getString(R.string.error_sync_cancelled));
        }
        if (mOnCompleteListener != null) {
            new Thread(new Runnable() {

                public void run() {
                    mOnCompleteListener.onComplete();
                }
            }).start();
        }
    }
}
