/*
 * Copyright (C) 2007-2008 Esmertec AG.
 * Copyright (C) 2007-2008 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.im.app;

import android.app.Activity;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.Context;
import android.content.res.Resources;
import android.database.Cursor;
import android.net.Uri;
import android.os.Handler;
import android.provider.Im;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.SpannableStringBuilder;
import android.text.TextUtils;
import android.text.style.RelativeSizeSpan;
import android.text.style.UnderlineSpan;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.android.im.R;
import com.android.im.plugin.BrandingResourceIDs;

import java.text.DateFormat;
import java.util.Calendar;

public class ContactView extends LinearLayout {
    static final String[] CONTACT_PROJECTION = {
        Im.Contacts._ID,
        Im.Contacts.PROVIDER,
        Im.Contacts.ACCOUNT,
        Im.Contacts.USERNAME,
        Im.Contacts.NICKNAME,
        Im.Contacts.TYPE,
        Im.Contacts.SUBSCRIPTION_TYPE,
        Im.Contacts.SUBSCRIPTION_STATUS,
        Im.Presence.PRESENCE_STATUS,
        Im.Presence.PRESENCE_CUSTOM_STATUS,
        Im.Chats.LAST_MESSAGE_DATE,
        Im.Chats.LAST_UNREAD_MESSAGE,
    };

    static final int COLUMN_CONTACT_ID = 0;
    static final int COLUMN_CONTACT_PROVIDER = 1;
    static final int COLUMN_CONTACT_ACCOUNT = 2;
    static final int COLUMN_CONTACT_USERNAME = 3;
    static final int COLUMN_CONTACT_NICKNAME = 4;
    static final int COLUMN_CONTACT_TYPE = 5;
    static final int COLUMN_SUBSCRIPTION_TYPE = 6;
    static final int COLUMN_SUBSCRIPTION_STATUS = 7;
    static final int COLUMN_CONTACT_PRESENCE_STATUS = 8;
    static final int COLUMN_CONTACT_CUSTOM_STATUS = 9;
    static final int COLUMN_LAST_MESSAGE_DATE = 10;
    static final int COLUMN_LAST_MESSAGE = 11;

    private ImageView mPresence;
    private TextView mLine1;
    private TextView mLine2;
    private TextView mTimeStamp;

    private Handler mHandler;
    private boolean mLayoutDirty;

    public ContactView(Context context, AttributeSet attrs) {
        super(context, attrs);
        mLayoutDirty = true;
    }

    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();

        mPresence = (ImageView) findViewById(R.id.presence);
        mLine1 = (TextView) findViewById(R.id.line1);
        mLine2 = (TextView) findViewById(R.id.line2);
        mTimeStamp = (TextView)findViewById(R.id.timestamp);

        mHandler = new Handler();
    }

    @Override
    public void setSelected(boolean selected) {
        super.setSelected(selected);
        if(selected) {
            // While layout, the width of children is unknown, we have to start
            // animation when layout is done.
            if (mLayoutDirty) {
                mHandler.post(new Runnable() {
                    public void run() {
                        startAnimationNow();
                    }
                });
            } else {
                startAnimationNow();
            }
        } else {
            mLine2.clearAnimation();
        }
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        mLayoutDirty = false;
        super.onLayout(changed, l, t, r, b);
    }

    @Override
    public void requestLayout() {
        super.requestLayout();
        mLayoutDirty = true;
    }

    /*package*/ void startAnimationNow() {
        View parent = (View)mLine2.getParent();
        int width = mLine2.getWidth();

        int parentWidth = parent.getWidth() - parent.getPaddingLeft()
                - parent.getPaddingRight();
        if(width > parentWidth) {
            int fromXDelta = parentWidth;
            int toXDelta = - width;
            int duration = (fromXDelta - toXDelta) * 32;
            Animation animation = new TranslateAnimation(fromXDelta, toXDelta, 0, 0);
            animation.setDuration(duration);
            animation.setRepeatMode(Animation.RESTART);
            animation.setRepeatCount(Animation.INFINITE);
            mLine2.startAnimation(animation);
        }
    }

    public void bind(Cursor cursor, String underLineText, boolean scrolling) {
        bind(cursor, underLineText, true, scrolling);
    }

    public void bind(Cursor cursor, String underLineText, boolean showChatMsg, boolean scrolling) {
        Resources r = getResources();
        long providerId = cursor.getLong(COLUMN_CONTACT_PROVIDER);
        String username = cursor.getString(COLUMN_CONTACT_USERNAME);
        String nickname = cursor.getString(COLUMN_CONTACT_NICKNAME);
        int type = cursor.getInt(COLUMN_CONTACT_TYPE);
        String statusText = cursor.getString(COLUMN_CONTACT_CUSTOM_STATUS);
        String lastMsg = cursor.getString(COLUMN_LAST_MESSAGE);

        boolean hasChat = !cursor.isNull(COLUMN_LAST_MESSAGE_DATE);

        ImApp app = ImApp.getApplication((Activity)mContext);
        BrandingResources brandingRes = app.getBrandingResource(providerId);

        int presence = cursor.getInt(COLUMN_CONTACT_PRESENCE_STATUS);
        // status icon

        if (Im.Contacts.TYPE_GROUP == type) {
            int iconId = lastMsg == null ? R.drawable.group_chat
                    : R.drawable.group_chat_new;
            mPresence.setImageResource(iconId);
        } else if (hasChat) {
            int iconId = lastMsg == null ? BrandingResourceIDs.DRAWABLE_READ_CHAT
                    : BrandingResourceIDs.DRAWABLE_UNREAD_CHAT;
            mPresence.setImageDrawable(brandingRes.getDrawable(iconId));
        } else {
            int iconId = PresenceUtils.getStatusIconId(presence);
            mPresence.setImageDrawable(brandingRes.getDrawable(iconId));
        }

        // line1
        CharSequence line1;
        if (Im.Contacts.TYPE_GROUP == type) {
            ContentResolver resolver = getContext().getContentResolver();
            long id = cursor.getLong(ContactView.COLUMN_CONTACT_ID);
            line1 = queryGroupMembers(resolver, id);
        } else {
            line1 = TextUtils.isEmpty(nickname) ?
                    ImpsAddressUtils.getDisplayableAddress(username) : nickname;

            if (!TextUtils.isEmpty(underLineText)) {
                // highlight/underline the word being searched
                String lowercase = line1.toString().toLowerCase();
                int start = lowercase.indexOf(underLineText.toLowerCase());
                if (start >= 0) {
                    int end = start + underLineText.length();
                    SpannableString str = new SpannableString(line1);
                    str.setSpan(new UnderlineSpan(), start, end,
                            Spannable.SPAN_INCLUSIVE_INCLUSIVE);
                    line1 = str;
                }
            }

            if (Im.Contacts.TYPE_TEMPORARY == type) {
                // Add a mark at the front of name if it's only a temporary
                // contact.
                SpannableStringBuilder str = new SpannableStringBuilder(
                        r.getText(R.string.unknown_contact));
                str.setSpan(new RelativeSizeSpan(0.8f), 0, str.length(),
                        Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
                str.append(line1);
                line1 = str;
            }
        }
        mLine1.setText(line1);

        // time stamp
        if (showChatMsg && hasChat) {
            mTimeStamp.setVisibility(VISIBLE);
            Calendar cal = Calendar.getInstance();
            cal.setTimeInMillis(cursor.getLong(COLUMN_LAST_MESSAGE_DATE));
            DateFormat formatter = DateFormat.getTimeInstance(DateFormat.SHORT);
            mTimeStamp.setText(formatter.format(cal.getTime()));
        } else {
            mTimeStamp.setVisibility(GONE);
        }

        // line2
        CharSequence line2 = null;
        if (showChatMsg) {
            line2 = lastMsg;
        }

        if (TextUtils.isEmpty(line2)){
            if (Im.Contacts.TYPE_GROUP == type) {
                // Show nothing in line2 if it's a group and don't
                // have any unread message.
                line2 = null;
            } else {
                // Show the custom status text if there's no new message.
                line2 = statusText;
            }
        }

        if (TextUtils.isEmpty(line2)) {
            // Show a string of presence if there is neither new message nor
            // custom status text.
            line2 = brandingRes.getString(PresenceUtils.getStatusStringRes(presence));
        }

        mLine2.setText(line2);

        View contactInfoPanel = findViewById(R.id.contactInfo);
        if (hasChat && showChatMsg) {
            contactInfoPanel.setBackgroundResource(R.drawable.list_item_im_bubble);
            mLine1.setTextColor(r.getColor(R.color.chat_contact));
        } else {
            contactInfoPanel.setBackgroundDrawable(null);
            contactInfoPanel.setPadding(4, 0, 0, 0);
            mLine1.setTextColor(r.getColor(R.color.nonchat_contact));
        }
    }

    private String queryGroupMembers(ContentResolver resolver, long groupId) {
        String[] projection = { Im.GroupMembers.NICKNAME };
        Uri uri = ContentUris.withAppendedId(Im.GroupMembers.CONTENT_URI, groupId);
        Cursor c = resolver.query(uri, projection, null, null, null);
        StringBuilder buf = new StringBuilder();
        if(c != null) {
            while(c.moveToNext()) {
                buf.append(c.getString(0));
                if(!c.isLast()) {
                    buf.append(',');
                }
            }
            c.close();
        }
        return buf.toString();
    }
}