/*
 * Copyright (C) 2010 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.camera.ui;

import com.android.camera.R;
import com.android.camera.Util;

import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.widget.GridView;
import android.widget.PopupWindow;
import android.widget.RelativeLayout;
import android.widget.SimpleAdapter;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

// A popup window that contains a big thumbnail and a list of apps to share.
public class SharePopup extends PopupWindow implements View.OnClickListener,
        View.OnTouchListener, AdapterView.OnItemClickListener, Rotatable {
    private static final String TAG = "SharePopup";
    private static final String ADAPTER_COLUMN_ICON = "icon";
    private Context mContext;
    private Uri mUri;
    private String mMimeType;
    private ImageView mThumbnail;
    private int mBitmapWidth;
    private int mBitmapHeight;
    private int mOrientation;
    // A view that contains a thumbnail and an arrow icon.
    private ViewGroup mShareView;
    // A view that contains a list of application icons and the share view.
    private View mRootView;
    // The list of the application icons.
    private GridView mShareList;
    // A rotated view that contains the thumbnail.
    private RotateLayout mThumbnailRotateLayout;
    private RotateLayout mGotoGalleryRotate;
    private View mPreviewFrame;
    private ArrayList<ComponentName> mComponent = new ArrayList<ComponentName>();

    private class MySimpleAdapter extends SimpleAdapter {
        public MySimpleAdapter(Context context, List<? extends Map<String, ?>> data,
                int resource, String[] from, int[] to) {
            super(context, data, resource, from, to);
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View v = super.getView(position, convertView, parent);
            RotateLayout r = (RotateLayout) v.findViewById(R.id.share_icon_rotate_layout);
            r.setOrientation(mOrientation);
            return v;
        }
    }

    private final SimpleAdapter.ViewBinder mViewBinder =
        new SimpleAdapter.ViewBinder() {
            @Override
            public boolean setViewValue(final View view, final Object data,
                    final String text) {
                if (view instanceof ImageView) {
                    ((ImageView)view).setImageDrawable((Drawable) data);
                    return true;
                }
                return false;
            }
        };

    public SharePopup(Activity activity, Uri uri, Bitmap bitmap, int orientation,
            View previewFrame) {
        super(activity);

        // Initialize variables
        mContext = activity;
        mUri = uri;
        mMimeType = mContext.getContentResolver().getType(mUri);
        mPreviewFrame = previewFrame;
        LayoutInflater inflater = activity.getLayoutInflater();
        ViewGroup sharePopup = (ViewGroup) inflater.inflate(R.layout.share_popup, null, false);
        // This is required because popup window is full screen.
        sharePopup.setOnTouchListener(this);
        mThumbnailRotateLayout = (RotateLayout) sharePopup.findViewById(R.id.thumbnail_rotate_layout);
        mShareList = (GridView) sharePopup.findViewById(R.id.share_list);
        mThumbnail = (ImageView) sharePopup.findViewById(R.id.thumbnail);
        mThumbnail.setImageBitmap(bitmap);
        mShareView = (ViewGroup) sharePopup.findViewById(R.id.share_view);
        mShareView.setOnClickListener(this);

        mGotoGalleryRotate =(RotateLayout) sharePopup.findViewById(R.id.goto_gallery_button_rotate);
        sharePopup.findViewById(R.id.goto_gallery_button).setOnClickListener(this);

        mBitmapWidth = bitmap.getWidth();
        mBitmapHeight = bitmap.getHeight();

        // Show play button if this is a video thumbnail.
        if (mMimeType.startsWith("video/")) {
            sharePopup.findViewById(R.id.play).setVisibility(View.VISIBLE);
        }
        mBitmapWidth = bitmap.getWidth();
        mBitmapHeight = bitmap.getHeight();

        Resources res = mContext.getResources();

        // Initialize popup window size.
        mRootView = sharePopup.findViewById(R.id.root);
        LayoutParams params = mRootView.getLayoutParams();
        params.width = previewFrame.getWidth();
        params.height = previewFrame.getHeight();
        mRootView.setLayoutParams(params);

        // Initialize popup window.
        setWidth(WindowManager.LayoutParams.MATCH_PARENT);
        setHeight(WindowManager.LayoutParams.MATCH_PARENT);
        setBackgroundDrawable(new ColorDrawable());
        setContentView(sharePopup);
        setOrientation(orientation);
        setFocusable(true);
        setAnimationStyle(R.style.AnimationPopup);
        createShareMenu();

        adjustThumbnailPosition();
    }

    private void adjustThumbnailPosition() {
        RelativeLayout.LayoutParams lpOld =
                (RelativeLayout.LayoutParams) mThumbnailRotateLayout.getLayoutParams();
        RelativeLayout.LayoutParams lpNew =
                new RelativeLayout.LayoutParams(lpOld.width, lpOld.height);

        mRootView.setBackgroundDrawable(null);
        if (mBitmapWidth > mBitmapHeight * 2 || mBitmapHeight > mBitmapWidth * 2) {
            // panorama image
            lpNew.addRule(RelativeLayout.CENTER_HORIZONTAL);
            lpNew.addRule(RelativeLayout.CENTER_VERTICAL);

            // panorama images block the preview from showing in the background
            // use a special color here for that.
            mRootView.setBackgroundColor(
                    mContext.getResources().getColor(R.color.share_popup_blackout));
        } else if (mBitmapWidth > mBitmapHeight) {
            // landscape image
            lpNew.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
            lpNew.addRule(RelativeLayout.ALIGN_PARENT_TOP);
            lpNew.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
        } else {
            // portrait image
            lpNew.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
            lpNew.addRule(RelativeLayout.ALIGN_PARENT_TOP);
            lpNew.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
        }

        mThumbnailRotateLayout.setLayoutParams(lpNew);
    }

    public void setOrientation(int orientation) {
        mOrientation = orientation;

        int hPaddingRootView = mRootView.getPaddingLeft() + mRootView.getPaddingRight();
        int vPaddingRootView = mRootView.getPaddingTop() + mRootView.getPaddingBottom();
        int hPadding = mShareView.getPaddingLeft() + mShareView.getPaddingRight();
        int vPadding = mShareView.getPaddingTop() + mShareView.getPaddingBottom();

        // Calculate the width and the height of the thumbnail. Reserve the
        // space for paddings.
        float maxWidth = mPreviewFrame.getWidth() - hPadding - hPaddingRootView;
        float maxHeight = mPreviewFrame.getHeight() - vPadding - vPaddingRootView;
        // Swap the width and height if it is portrait mode.
        if (orientation == 90 || orientation == 270) {
            float temp = maxWidth;
            maxWidth = maxHeight;
            maxHeight = temp;
        }
        float actualAspect = maxWidth / maxHeight;
        float desiredAspect = (float) mBitmapWidth / mBitmapHeight;

        if (mMimeType.startsWith("video/")) {
            desiredAspect = 4F/3F;
            mThumbnail.setScaleType(ImageView.ScaleType.CENTER_CROP);
        } else {
            mThumbnail.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
        }

        LayoutParams params = mThumbnail.getLayoutParams();
        if (actualAspect > desiredAspect) {
            params.width = Math.round(maxHeight * desiredAspect);
            params.height = Math.round(maxHeight);
        } else {
            params.width = Math.round(maxWidth);
            params.height = Math.round(maxWidth / desiredAspect);
        }
        mThumbnail.setLayoutParams(params);

        if (mThumbnailRotateLayout != null) mThumbnailRotateLayout.setOrientation(orientation);

        int count = mShareList.getChildCount();
        for (int i = 0; i < count; i++) {
            ViewGroup f = (ViewGroup) mShareList.getChildAt(i);
            RotateLayout r = (RotateLayout) f.findViewById(R.id.share_icon_rotate_layout);
            r.setOrientation(orientation);
        }

        mGotoGalleryRotate.setOrientation(orientation);

        adjustThumbnailPosition();
    }

    @Override
    public void showAtLocation(View parent, int gravity, int x, int y) {
        super.showAtLocation(parent, gravity, x, y);
        // Inform other popup to dismiss if exit
        PopupManager.getInstance(mContext).notifyShowPopup(null);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.goto_gallery_button:
            case R.id.share_view:
                Util.viewUri(mUri, mContext);
                break;
        }
    }

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            dismiss();
            return true;
        }
        return false;
    }

    public void createShareMenu() {
        PackageManager packageManager = mContext.getPackageManager();
        List<ResolveInfo> infos = packageManager.queryIntentActivities(
                new Intent(Intent.ACTION_SEND).setType(mMimeType), 0);

        ArrayList<HashMap<String, Object>> items = new ArrayList<HashMap<String, Object>>();
        for (ResolveInfo info: infos) {
            ComponentName component = new ComponentName(
                    info.activityInfo.packageName, info.activityInfo.name);
            HashMap<String, Object> map = new HashMap<String, Object>();
            map.put(ADAPTER_COLUMN_ICON, info.loadIcon(packageManager));
            items.add(map);
            mComponent.add(component);
        }

        // On phone UI, we have to know how many icons in the grid view before
        // the view is measured.
        if (((Activity) mContext).getRequestedOrientation()
                == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) {
            mShareList.setNumColumns(items.size());
        }

        SimpleAdapter listItemAdapter = new MySimpleAdapter(mContext, items,
                R.layout.share_icon,
                new String[] {ADAPTER_COLUMN_ICON},
                new int[] {R.id.icon});

        listItemAdapter.setViewBinder(mViewBinder);
        mShareList.setAdapter(listItemAdapter);
        mShareList.setOnItemClickListener(this);
    }

    public Uri getUri() {
        return mUri;
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int index, long id) {
        Intent intent = new Intent(Intent.ACTION_SEND);
        intent.setType(mMimeType);
        intent.putExtra(Intent.EXTRA_STREAM, mUri);
        intent.setComponent(mComponent.get(index));
        mContext.startActivity(intent);
    }
}