/*
 * Copyright (C) 2009 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.gallery3d.app;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;

import com.android.gallery3d.R;
import com.android.gallery3d.data.DataManager;
import com.android.gallery3d.data.DecodeService;
import com.android.gallery3d.data.DownloadService;
import com.android.gallery3d.data.ImageService;
import com.android.gallery3d.ui.GLRoot;
import com.android.gallery3d.ui.GLRootView;
import com.android.gallery3d.ui.PositionRepository;

public final class Gallery extends Activity implements GalleryContext {
    public static final String REVIEW_ACTION = "com.android.gallery3d.app.REVIEW";

    private static final String TAG = "Gallery";
    private GLRootView mGLRootView;

    private StateManager mStateManager;
    private ImageService mImageService;
    private DataManager mDataManager;
    private PositionRepository mPositionRepository = new PositionRepository();
    private DownloadService mDownloadService;
    private DecodeService mDecodeService;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Log.e(TAG, "Picasa Cache Path: " + this.getExternalCacheDir());
        setContentView(R.layout.main);
        mGLRootView = (GLRootView) findViewById(R.id.gl_root_view);

        if (savedInstanceState != null) {
            getStateManager().restoreFromState(savedInstanceState);
        } else {
            getStateManager().startState(GalleryPage.class, new Bundle());
        }
    }

    @Override
    public void onResume() {
        super.onResume();
        mGLRootView.onResume();
        getStateManager().resume();
    }

    @Override
    public void onPause() {
        super.onPause();
        mGLRootView.onPause();
        getStateManager().pause();
    }

    @Override
    public void onStop() {
        super.onStop();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.i(TAG, "onDestroy");
        synchronized (this) {
            if (mImageService != null) mImageService.close();
        }
    }

    @Override
    public void onBackPressed() {
        // send the back event to the top sub-state
        getStateManager().getTopState().onBackPressed();
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        getStateManager().saveState(outState);
    }

    public Context getAndroidContext() {
        return this;
    }

    public synchronized ImageService getImageService() {
        if (mImageService == null) {
            mImageService = new ImageService(getContentResolver());
        }
        return mImageService;
    }

    public synchronized DataManager getDataManager() {
        if (mDataManager == null) {
            mDataManager = new DataManager(this);
        }
        return mDataManager;
    }

    public synchronized StateManager getStateManager() {
        if (mStateManager == null) {
            mStateManager = new StateManager(this);
        }
        return mStateManager;
    }

    public GLRoot getGLRoot() {
        return mGLRootView;
    }

    public PositionRepository getPositionRepository() {
        return mPositionRepository;
    }

    public synchronized DownloadService getDownloadService() {
        if (mDownloadService == null) {
            mDownloadService = new DownloadService();
        }
        return mDownloadService;
    }

    public synchronized DecodeService getDecodeService() {
        if (mDecodeService == null) {
            mDecodeService = new DecodeService();
        }
        return mDecodeService;
    }
}