/*
 * 				Firetweet - Twitter client for Android
 * 
 *  Copyright (C) 2012-2014 Mariotaku Lee <mariotaku.lee@gmail.com>
 * 
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 * 
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 * 
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.getlantern.firetweet.view;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.util.AttributeSet;
import android.widget.TextView;

import org.getlantern.firetweet.util.ThemeUtils;
import org.getlantern.firetweet.util.FiretweetValidator;

import java.util.Locale;

import static org.getlantern.firetweet.util.Utils.getLocalizedNumber;

public class StatusTextCountView extends TextView {

    private final int mTextColor;
    private final Locale mLocale;
    private final FiretweetValidator mValidator;

    public StatusTextCountView(final Context context) {
        this(context, null);
    }

    public StatusTextCountView(final Context context, final AttributeSet attrs) {
        this(context, attrs, android.R.attr.textViewStyle);
    }

    public StatusTextCountView(final Context context, final AttributeSet attrs, final int defStyle) {
        super(context, attrs, defStyle);
        mValidator = new FiretweetValidator(context);
        if (isInEditMode()) {
            mTextColor = 0;
            mLocale = Locale.getDefault();
        } else {
            final int textAppearance = ThemeUtils.getTitleTextAppearance(context);
            final TypedArray a = context.obtainStyledAttributes(textAppearance, new int[]{android.R.attr.textColor});
            mTextColor = a.getColor(0, 0);
            a.recycle();
            mLocale = getResources().getConfiguration().locale;
            setTextColor(mTextColor);
        }
    }

    public void setTextCount(final int count) {
        final int maxLength = mValidator.getMaxTweetLength();
        setText(getLocalizedNumber(mLocale, maxLength - count));
        final boolean exceeded_limit = count < maxLength;
        final boolean near_limit = count >= maxLength - 10;
        final float hue = exceeded_limit ? near_limit ? 5 * (maxLength - count) : 50 : 0;
        final float[] textColorHsv = new float[3];
        Color.colorToHSV(mTextColor, textColorHsv);
        final float[] errorColorHsv = {hue, 1.0f, 0.75f + textColorHsv[2] / 4};
        setTextColor(count >= maxLength - 10 ? Color.HSVToColor(errorColorHsv) : mTextColor);
    }

}