using System;
using Android.Content;
using Android.Runtime;
using Android.Views;
using Android.Util;
using Android.Graphics.Drawables;
using Android.Views.Animations;
using Android.Graphics;
using Android.OS;
using Android.Views.InputMethods;
using Android.Text;

namespace Shared
{
   

        //已经全面检查了代码
        /// <summary>
        /// Button 按键
        /// </summary>
        public class Button : View
    {
        /// <summary>
        ///  当前视图
        /// </summary>
        /// <value>The android button.</value>
        AndroidButton currentButton {
            get {
                return AndroidView as AndroidButton;
            }
            set {
                AndroidView = value;
            }
        }

        /// <summary>
        /// 构造函数
        /// </summary>
        public Button ()
        {
            currentButton = new AndroidButton (Application.Activity, this);
            currentButton.SetTextSize (ComplexUnitType.Sp, Application.FontSize);

        }

        byte[] imageBytes;
        public byte[] ImageBytes
        {
            get
            {
                return imageBytes;
            }
            set
            {
                imageBytes = value;
                IsSelected = isSelected;
            }
        }
        /// <summary>
        /// 文字大小
        /// </summary>
        /// <value>The size of the text.</value>
        public float TextSize {
            get {
                return currentButton.TextSize;
            }
            set {
                currentButton.SetTextSize (ComplexUnitType.Sp, value);
            }
        }

        int textID;
        /// <summary>
        /// 根据ID获取对应的备注
        /// </summary>
        /// <value>The text I.</value>
        public int TextID {
            get {
                return textID;
            }
            set {
                textID = value;
                Text = Language.StringByID (TextID);
            }
        }

        /// <summary>
        /// 文本
        /// </summary>
        /// <value>The text.</value>
        public string Text {
            get {
                return currentButton.Text;
            }
            set {

                currentButton.Text = value;
            }
        }

        ///// <summary>
        ///// 字体名称
        ///// </summary>
        ///// <value>The name of the font.</value>
        //public string FontName {
        //    get {
        //        return "";
        //    }
        //    set {
        //        var typeFace = Typeface.CreateFromAsset (Shared.Application.Activity.Assets, "titilliumtext25l005.otf");
        //        if (typeFace != null) {
        //            currentButton.SetTypeface (typeFace, TypefaceStyle.Normal);
        //        }
        //    }
        //}

        ///// <summary>
        ///// 普通字体
        ///// </summary>
        //string mFontNameNormal;
        //Typeface typeFaceNormal;
        //public string FontNameNormal {
        //    get
        //    {
        //        return mFontNameNormal;
        //    }
        //    set
        //    {
        //        mFontNameNormal = value;

        //        var typeFace = Typeface.CreateFromAsset(Shared.Application.Activity.Assets, mFontNameNormal);
        //        if (typeFace != null)
        //        {
        //            typeFaceNormal = typeFace;
        //        }
        //    }
        //}

        //string mFontNameBold;
        //Typeface typeFaceBold;
        //public string FontNameBold
        //{
        //    get
        //    {
        //        return mFontNameBold;
        //    }
        //    set
        //    {
        //        mFontNameBold = value;

        //        var typeFace = Typeface.CreateFromAsset(Shared.Application.Activity.Assets, mFontNameBold);
        //        if (typeFace != null)
        //        {
        //            typeFaceBold = typeFace;
        //        }
        //    }
        //}



        string mFontName;
        /// <summary>
        /// 字体名称
        /// </summary>
        /// <value>The name of the font.</value>
        public string FontName
        {
            get
            {
                return mFontName;
            }
            set
            {
                try
                {
                    var typeFace = Typeface.CreateFromAsset(Shared.Application.Activity.Assets, value);
                    if (typeFace != null)
                    {
                        mFontName = value;
                        currentButton.SetTypeface(typeFace, TypefaceStyle.Normal);
                    }
                }
                catch {
                }
            }
        }

        bool isMoreLines;
        public bool IsMoreLines {
            get {
                return isMoreLines;
            }
            set {
                isMoreLines = value;
                currentButton.SetSingleLine (!value);
            }
        }

        /// <summary>
        /// 是否显示粗体
        /// </summary>
        bool isBold;
        public bool IsBold
        {
            get
            {
                return isBold;
            }
            set
            {
                isBold = value;
                if (isBold)
                {
                    currentButton.SetTypeface(Typeface.DefaultFromStyle(TypefaceStyle.Bold), TypefaceStyle.Bold);
                }
                else {
                    currentButton.SetTypeface(Typeface.DefaultFromStyle(TypefaceStyle.Normal), TypefaceStyle.Normal);
                }
            }
        }

        /// <summary>
        /// 获取字体长度
        /// </summary>
        public int GetTextWidth()
        {

            TextPaint textPaint = new TextPaint();
            textPaint.TextSize = this.TextSize;
            return (int)textPaint.MeasureText(this.Text);
        }

        /// <summary>
        /// 刷新
        /// </summary>
        public override void Refresh ()
        {
            base.Refresh ();
            IsSelected = isSelected;
        }

        uint textColor = 0xFFFFFFFF;
        /// <summary>
        /// 文字颜色
        /// </summary>
        /// <value>The color of the text.</value>
        public uint TextColor {
            get {
                return textColor;
            }
            set {
                textColor = value;
                if (IsSelected) {
                    return;
                }
                byte r, g, b, a;
                r = (byte)(textColor / 256 / 256 % 256);
                g = (byte)(textColor / 256 % 256);
                b = (byte)(textColor % 256);
                a = (byte)(textColor / 256 / 256 / 256 % 256);

                currentButton.SetTextColor (Android.Graphics.Color.Argb (a, r, g, b));
            }
        }

        uint selecteTextColor = 0xFFFFFFFF;
        /// <summary>
        /// 文字颜色
        /// </summary>
        /// <value>The color of the text.</value>
        public uint SelectedTextColor {
            get {
                return selecteTextColor;
            }
            set {
                selecteTextColor = value;
                if (!IsSelected) {
                    return;
                }
                byte r, g, b, a;
                r = (byte)(selecteTextColor / 256 / 256 % 256);
                g = (byte)(selecteTextColor / 256 % 256);
                b = (byte)(selecteTextColor % 256);
                a = (byte)(selecteTextColor / 256 / 256 / 256 % 256);

                currentButton.SetTextColor (Android.Graphics.Color.Argb (a, r, g, b));
            }
        }

        bool isSelected;
        /// <summary>
        /// 选中状态
        /// </summary>
        /// <value><c>true</c> if this instance is selected; otherwise, <c>false</c>.</value>
        public bool IsSelected {
            get {
                return isSelected;
            }
            set {
                isSelected = value;
                if (!IsCanRefresh) {
                    return;
                }
                if (isSelected) {
                    if (SelectedImagePath == null) {
                        SelectedBackgroundColor = SelectedBackgroundColor;
                    } else {
                        Background (SelectedImagePath);
                    }
                    SelectedTextColor = selecteTextColor;
                } else {
                    if (imageBytes != null)
                    {
                        AndroidView.Background = Bytes2Drawable(imageBytes);
                        return;
                    }
                    if (UnSelectedImagePath == null) {
                        BackgroundColor = BackgroundColor;
                    } else {
                        Background (UnSelectedImagePath);
                    }
                    TextColor = textColor;
                }
            }
        }


        

        TextAlignment textAlignment = TextAlignment.Center;
        /// <summary>
        /// 文字对齐方式
        /// </summary>
        /// <param name="horizontalAlignment">横向</param>
        /// <param name="verticalAlignment">纵向</param>
        public TextAlignment TextAlignment {
            get {
                return textAlignment;
            }
            set {
                textAlignment = value;
                switch (value) {
                case TextAlignment.TopLeft:
                    currentButton.Gravity = GravityFlags.Top | GravityFlags.Left;
                    break;
                case TextAlignment.TopCenter:
                    currentButton.Gravity = GravityFlags.Top | GravityFlags.Center;
                    break;
                case TextAlignment.TopRight:
                    currentButton.Gravity = GravityFlags.Top | GravityFlags.Right;
                    break;
                case TextAlignment.CenterLeft:
                    currentButton.Gravity = GravityFlags.Center | GravityFlags.Left;
                    break;
                case TextAlignment.Center:
                    currentButton.Gravity = GravityFlags.Center | GravityFlags.Center;
                    break;
                case TextAlignment.CenterRight:
                    currentButton.Gravity = GravityFlags.Center | GravityFlags.Right;
                    break;
                case TextAlignment.BottomLeft:
                    currentButton.Gravity = GravityFlags.Bottom | GravityFlags.Left;
                    break;
                case TextAlignment.BottomCenter:
                    currentButton.Gravity = GravityFlags.Bottom | GravityFlags.Center;
                    break;
                case TextAlignment.BottomRight:
                    currentButton.Gravity = GravityFlags.Bottom | GravityFlags.Right;
                    break;
                }
            }
        }

        /// <summary>
        /// 内边距
        /// </summary>
        /// <value>The padding.</value>
        public override Padding Padding {
            get {
                return new Padding (currentButton.PaddingTop, currentButton.PaddingLeft, currentButton.PaddingBottom, currentButton.PaddingRight);
            }
            set {
                currentButton.SetPadding (value.Left, value.Top, value.Right, value.Bottom);
            }
        }

        string selectedImagePath;
        /// <summary>
        /// 选择时背景图路径
        /// </summary>
        /// <value>The selected image path.</value>
        public string SelectedImagePath {
            get {
                return selectedImagePath;
            }
            set {
                selectedImagePath = value;
                IsSelected = isSelected;
            }
        }

        string unSelectedImagePath;
        /// <summary>
        /// 非选中状态的背景图路径
        /// </summary>
        /// <value>The un selected image path.</value>
        public string UnSelectedImagePath {
            get {
                return unSelectedImagePath;
            }
            set {
                unSelectedImagePath = value;
                IsSelected = isSelected;
            }
        }

        uint selectedBackgroundColor;
        /// <summary>
        /// 选择时背景颜色
        /// </summary>
        /// <value>The color of the text.</value>
        public uint SelectedBackgroundColor {
            get {
                return selectedBackgroundColor;
            }
            set {
                selectedBackgroundColor = value;
                if (AndroidView.Background == null || AndroidView.Background.GetType () != typeof (GradientDrawable)) {
                    AndroidView.Background = new Android.Graphics.Drawables.GradientDrawable ();
                }

                var gradientDrawable = (GradientDrawable)AndroidView.Background;
                gradientDrawable.SetCornerRadius (DensityUtil.Dip2Px (Radius));
                byte r, g, b, a;
                r = (byte)(BorderColor / 256 / 256 % 256);
                g = (byte)(BorderColor / 256 % 256);
                b = (byte)(BorderColor % 256);
                a = (byte)(BorderColor / 256 / 256 / 256 % 256);
                gradientDrawable.SetStroke ((int)BorderWidth, Android.Graphics.Color.Argb (a, r, g, b));

                r = (byte)(selectedBackgroundColor / 256 / 256 % 256);
                g = (byte)(selectedBackgroundColor / 256 % 256);
                b = (byte)(selectedBackgroundColor % 256);
                a = (byte)(selectedBackgroundColor / 256 / 256 / 256 % 256);
                gradientDrawable.SetColor (Android.Graphics.Color.Argb (a, r, g, b).ToArgb ());
            }

        }

        internal class AndroidButton : Android.Widget.Button
        {
            View view;
            public AndroidButton (Context context, View view)
                : base (context)
            {
                this.view = view;
                SetBackgroundColor (Android.Graphics.Color.Transparent);
                SetPadding (0, 0, 0, 0);
                SetTextColor (Android.Graphics.Color.White);
                SetLines (1);
                SetEllipsize (true);
            }

            public override bool OnTouchEvent (MotionEvent e)
            {
                var v = base.OnTouchEvent (e);
                view?.TouchEvent (e);
                return true;
            }

            public void SetEllipsize (bool ellipsize) {
                if (ellipsize) {
                    Ellipsize = TextUtils.TruncateAt.End;
                } else {
                    Ellipsize = TextUtils.TruncateAt.Marquee;
                }
            }

            public override TextUtils.TruncateAt Ellipsize { get => base.Ellipsize; set => base.Ellipsize = value; }
        }
    }
}