package com.appnexus.opensdk;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.graphics.RectF;
import android.graphics.Typeface;
import android.os.Build;
import android.text.Html;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ProgressBar;

import com.appnexus.opensdk.utils.ViewUtil;

public class CircularProgressBar extends ProgressBar{

    private static final double DEFAULT_STROKE_WIDTH = 2.5;
    private static final int TITLE_FONT_SIZE = 14;
    private static final String CLOSE_X = "×";
    private int GRAY = Color.parseColor("#787878");
    private int WHITE = Color.parseColor("#ffffff");
    private static final int CROSS_X_FONT_SIZE = 24;

    private String title = "";

    private int strokeWidth = 0;

    private final RectF circleBounds = new RectF();
    private final Paint progressColorPaint = new Paint();
    private final Paint strokeColorPaint = new Paint();
    private final Paint backgroundColorPaint = new Paint();
    private final Paint titlePaint = new Paint();

    public CircularProgressBar(Context context) {
        super(context);
        initializeCountdownView(null, 0);
    }

    public CircularProgressBar(Context context, AttributeSet attrs) {
        super(context, attrs);
        initializeCountdownView(attrs, 0);
    }

    public CircularProgressBar(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        initializeCountdownView(attrs, defStyle);
    }

    public void initializeCountdownView(AttributeSet attrs, int style){
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            setLayerType(View.LAYER_TYPE_SOFTWARE, null);
        }

        strokeWidth = ViewUtil.getValueInPixel(this.getContext(), DEFAULT_STROKE_WIDTH) + 1;

        progressColorPaint.setColor(WHITE);
        strokeColorPaint.setColor(GRAY);
        backgroundColorPaint.setColor(WHITE);
        titlePaint.setColor(GRAY);

        progressColorPaint.setAntiAlias(true);
        progressColorPaint.setStyle(Style.STROKE);
        progressColorPaint.setStrokeWidth(strokeWidth);

        strokeColorPaint.setAntiAlias(true);
        strokeColorPaint.setStyle(Style.STROKE);
        strokeColorPaint.setStrokeWidth(strokeWidth);

        backgroundColorPaint.setAntiAlias(true);
        backgroundColorPaint.setStyle(Style.FILL);
        backgroundColorPaint.setStrokeWidth(strokeWidth);

        titlePaint.setTextSize(TITLE_FONT_SIZE);
        titlePaint.setStyle(Style.FILL);
        titlePaint.setAntiAlias(true);
        titlePaint.setTypeface(Typeface.create(Typeface.MONOSPACE, Typeface.BOLD));
    }

    @Override
    protected synchronized void onDraw(Canvas canvas) {
        canvas.drawArc(circleBounds, 0, 360, false, backgroundColorPaint);
        canvas.drawArc(circleBounds, 0, 360, false, strokeColorPaint);
        float scale = getMax() > 0 ? (float)getProgress()/getMax() * 360: 0;
        canvas.drawArc(circleBounds, 270, -scale, false, progressColorPaint);

        if (!TextUtils.isEmpty(title)){
            int x =  (int)(getMeasuredWidth()/2 - titlePaint.measureText(title) / 2);
            int y = getMeasuredHeight()/2;

            float titleHeight = Math.abs(titlePaint.descent() + titlePaint.ascent());
            y += titleHeight/ 2;
            canvas.drawText(title, x, y, titlePaint);
        }
        super.onDraw(canvas);
    }

    @Override
    protected void onMeasure(final int widthMeasureSpec, final int heightMeasureSpec) {
        final int height = getDefaultSize(getSuggestedMinimumHeight(), heightMeasureSpec);
        final int width = getDefaultSize(getSuggestedMinimumWidth(), widthMeasureSpec);
        final int min = Math.min(width, height);
        setMeasuredDimension(min + 2 * strokeWidth, min + 2 * strokeWidth);

        circleBounds.set(strokeWidth, strokeWidth, min + strokeWidth, min + strokeWidth);
    }

    @Override
    public synchronized void setProgress(int progress) {
        super.setProgress(progress);
        invalidate();
    }

    public synchronized void setTitle(String title){
        if(title.equalsIgnoreCase("X")){
            this.title = Html.fromHtml(CLOSE_X).toString();
            titlePaint.setTextSize(ViewUtil.getValueInPixel(this.getContext(), CROSS_X_FONT_SIZE));
        }else{
            this.title = title;
            titlePaint.setTextSize(ViewUtil.getValueInPixel(this.getContext(), TITLE_FONT_SIZE));
        }
        invalidate();
    }


    public String getTitle(){
        return title;
    }

    public void setTransparent() {
        GRAY = Color.parseColor("#00000000");
        WHITE = Color.parseColor("#00000000");
        initializeCountdownView(null, 0);
        invalidate();
    }
}