using System;
using System.Collections.Generic;

namespace Asa
{
    public class LabelText
    {
        /// <summary>
        /// 前缀
        /// </summary>
        public string Prefix = "";
        /// <summary>
        /// 后缀
        /// </summary>
        public string Suffix = "";
        /// <summary>
        /// 取值字段
        /// </summary>
        public string Field = "";

        public LabelText()
        {
        }

        public LabelText(string s1, string s2, string field)
        {
            Prefix = s1;
            Suffix = s2;
            Field = field;
        }

        public string GetText()
        {
            return Prefix + "[" + Field + "]" + Suffix;
        }
    }

    public class CodeLabel
    {
        private List<string> name = new List<string>();
        private List<string> file = new List<string>();
        private XML xml = new XML();
        private bool codeMove = false;
        private System.Windows.Forms.PictureBox pic;
        private System.Drawing.Point offset = new System.Drawing.Point();
        private System.Drawing.Point oldPoint = new System.Drawing.Point(0, 0);
        private List<LabelText> labelText = new List<LabelText>();
        private List<System.Drawing.Rectangle> labelRect = new List<System.Drawing.Rectangle>();
        private List<System.Drawing.Font> labelFont = new List<System.Drawing.Font>();

        private readonly System.Drawing.Rectangle INIT_RECT = new System.Drawing.Rectangle(0, 0, 50, 20);
        private readonly System.Drawing.Font INIT_FONT = new System.Drawing.Font("宋体", 9f);
        private readonly System.Drawing.Size LABEL_SIZE = new System.Drawing.Size(500, 300);
        private readonly System.Drawing.Rectangle CODE_RECT = new System.Drawing.Rectangle(10, 10, 150, 150);
        public delegate void UpdateTextRectEvent(System.Drawing.Rectangle rect);
        public event UpdateTextRectEvent UpdateTextRect;
        public delegate void UpdateTextStringEvent(string s1, string s2, string field);
        public event UpdateTextStringEvent UpdateTextString;
        public delegate void UpdateCodeRectEvent();
        public event UpdateCodeRectEvent UpdateCodeRect;

        public CodeLabel()
        {
            //新建文件夹
            if (!System.IO.Directory.Exists(Common.LABEL_DIR))
                System.IO.Directory.CreateDirectory(Common.LABEL_DIR);

            file.AddRange(System.IO.Directory.GetFiles(Common.LABEL_DIR, "*.xml"));
            foreach(string s in file)
            {
                xml.Open(s);
                name.Add(xml.GetText("Name"));
            }
            TextIndex = -1;
            QRcodeSplice = new List<string>();
        }

        //====================属性====================
        /// <summary>
        /// 标签名称
        /// </summary>
        public string[] Name { get { return name.ToArray(); } }

        /// <summary>
        /// 标签数量
        /// </summary>
        public int Count { get { return name.Count; } }

        /// <summary>
        /// 标签大小
        /// </summary>
        public System.Drawing.Size Size { get; set; }

        /// <summary>
        /// 二维码位置大小
        /// </summary>
        public System.Drawing.Rectangle QRcodeRect { get; set; }

        /// <summary>
        /// 二维码拼接字符串
        /// </summary>
        public List<string> QRcodeSplice { get; set; }

        /// <summary>
        /// 文本索引
        /// </summary>
        public int TextIndex { get; set; }

        /// <summary>
        /// 设置当前文本的大小
        /// </summary>
        public System.Drawing.Rectangle CurrTextRect
        {
            get
            {
                if (TextIndex == -1)
                    return new System.Drawing.Rectangle(0, 0, 0, 0);
                else
                    return labelRect[TextIndex];
            }
            set
            {
                if (TextIndex > -1)
                    labelRect[TextIndex] = value;
            }
        }

        /// <summary>
        /// 获取最后一个文本的大小
        /// </summary>
        public System.Drawing.Rectangle LastTextRect
        {
            get
            {
                if (labelRect.Count == 0)
                    return new System.Drawing.Rectangle(0, 0, 0, 0);
                else
                    return labelRect[labelRect.Count - 1];
            }
        }

        /// <summary>
        /// 设置当前文本的字体
        /// </summary>
        public System.Drawing.Font CurrTextFont
        {
            get
            {
                if (TextIndex == -1)
                    return INIT_FONT;
                else
                    return labelFont[TextIndex];
            }
            set
            {
                if (TextIndex > -1)
                    labelFont[TextIndex] = value;
            }
        }

        public string CurrText
        {
            get
            {
                return labelText[TextIndex].GetText();
            }
        }

        public int TextCount
        {
            get { return labelText.Count; }
        }


        //====================方法====================
        public int NameFindIndex(string s)
        {
            return name.FindIndex(t => t == s);
        }

        private string ConvertFont(System.Drawing.Font font)
        {
            string s = font.Name + "," + font.Size;
            if (font.Bold) s += ",B";
            if (font.Italic) s += ",I";
            return s;
        }

        private System.Drawing.Font ConvertFont(string s)
        {
            string[] tt = s.Split(',');
            System.Drawing.FontStyle style = System.Drawing.FontStyle.Regular;
            if (tt.Length == 4)
            {
                style = System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic;
            }
            else if (tt.Length == 3)
            {
                if (tt[2] == "B")
                    style = System.Drawing.FontStyle.Bold;
                else if (tt[2] == "I")
                    style = System.Drawing.FontStyle.Italic;
            }
            System.Drawing.Font font = new System.Drawing.Font(tt[0], Convert.ToSingle(tt[1]), style);
            return font;
        }

        /// <summary>
        /// 设置显示图像的控件
        /// </summary>
        /// <param name="pic"></param>
        public void SetImage(System.Windows.Forms.PictureBox pic)
        {
            this.pic = pic;
            pic.Paint += Pic_Paint;
            pic.MouseMove += Pic_MouseMove;
            pic.MouseDown += Pic_MouseDown;
        }

        /// <summary>
        /// 加载
        /// </summary>
        /// <param name="index"></param>
        public void Load(int index)
        {
            if (index < 0) index = 0;
            if (index >= file.Count) return;

            int l, t, w, h;
            labelFont.Clear();
            labelRect.Clear();
            labelText.Clear();
            QRcodeSplice.Clear();

            xml.Open(file[index]);
            w = Convert.ToInt32(xml.GetAttribute("Width", "Size"));
            h = Convert.ToInt32(xml.GetAttribute("Height", "Size"));
            Size = new System.Drawing.Size(w, h);
            if (pic == null)
            {
                offset.X = offset.Y = 0;
            }
            else
            {
                offset.X = (pic.Width - w) / 2;
                offset.Y = (pic.Height - h) / 2;
            }

            int n = xml.GetCount("Text");
            for (int i = 0; i < n; i++)
            {
                l = Convert.ToInt32(xml.GetAttribute("Left", i, "Text"));
                t = Convert.ToInt32(xml.GetAttribute("Top", i, "Text"));
                w = Convert.ToInt32(xml.GetAttribute("Width", i, "Text"));
                h = Convert.ToInt32(xml.GetAttribute("Height", i, "Text"));
                labelRect.Add(new System.Drawing.Rectangle(l, t, w, h));
                labelFont.Add(ConvertFont(xml.GetAttribute("Font", i, "Text")));
                labelText.Add(new LabelText(xml.GetAttribute("Prefix", i, "Text"), xml.GetAttribute("Suffix", i, "Text"), xml.GetAttribute("Field", i, "Text")));
            }

            l = Convert.ToInt32(xml.GetAttribute("Left", "QRcode"));
            t = Convert.ToInt32(xml.GetAttribute("Top", "QRcode"));
            w = Convert.ToInt32(xml.GetAttribute("Width", "QRcode"));
            h = Convert.ToInt32(xml.GetAttribute("Height", "QRcode"));
            QRcodeRect = new System.Drawing.Rectangle(l, t, w, h);
            QRcodeSplice.AddRange(xml.GetAttribute("SpliceStr", "QRcode").Split(','));
        }

        /// <summary>
        /// 创建
        /// </summary>
        /// <param name="name"></param>
        public void Create(string name)
        {
            string path = Common.LABEL_DIR + string.Format("{0:yyyyMMddHHmmss}.xml", DateTime.Now);
            string contents = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\r\n";
            contents += "<Label>\r\n  <Name>" + name + "</Name>\r\n";
            contents += "  <Size Width=\"" + LABEL_SIZE.Width + "\" Height=\"" + LABEL_SIZE.Height + "\" />\r\n  <Text />\r\n";
            contents += "  <QRcode SpliceStr=\"\" Left=\"" + CODE_RECT.X + "\" Top=\"" + CODE_RECT.Y + "\" Width=\"" + CODE_RECT.Width + "\" Height=\"" + CODE_RECT.Height + "\" />\r\n";
            contents += "</Label>";
            System.IO.File.WriteAllText(path, contents, System.Text.Encoding.UTF8);
            file.Add(path);
            this.name.Add(name);
        }

        /// <summary>
        /// 删除
        /// </summary>
        /// <param name="index"></param>
        public void Delete(int index)
        {
            System.IO.File.Delete(file[index]);
            file.RemoveAt(index);
            name.RemoveAt(index);
        }

        public void Save()
        {
            xml.SetAttribute("Width", Size.Width.ToString(), "Size");
            xml.SetAttribute("Height", Size.Height.ToString(), "Size");
            xml.SetAttribute("Left", QRcodeRect.Left.ToString(), "QRcode");
            xml.SetAttribute("Top", QRcodeRect.Top.ToString(), "QRcode");
            xml.SetAttribute("Width", QRcodeRect.Width.ToString(), "QRcode");
            xml.SetAttribute("Height", QRcodeRect.Height.ToString(), "QRcode");
            xml.SetAttribute("SpliceStr", string.Join(",", Common.Label.QRcodeSplice), "QRcode");
            xml.DelChildNode("Text");
            for (int i = 0; i < labelRect.Count; i++)
            {
                xml.AddNode("Item", "Text");
                xml.SetAttribute("Prefix", labelText[i].Prefix, i, "Text");
                xml.SetAttribute("Suffix", labelText[i].Suffix, i, "Text");
                xml.SetAttribute("Field", labelText[i].Field, i, "Text");
                xml.SetAttribute("Font", ConvertFont(labelFont[i]), i, "Text");
                xml.SetAttribute("Left", labelRect[i].X.ToString(), i, "Text");
                xml.SetAttribute("Top", labelRect[i].Y.ToString(), i, "Text");
                xml.SetAttribute("Width", labelRect[i].Width.ToString(), i, "Text");
                xml.SetAttribute("Height", labelRect[i].Height.ToString(), i, "Text");
            }
            
            xml.Save();


        }

        /// <summary>
        /// 更新图像
        /// </summary>
        public void Update()
        {
            pic.Refresh();
        }

        /// <summary>
        /// 添加文本
        /// </summary>
        public void AddText()
        {
            labelText.Add(new LabelText());
            labelRect.Add(INIT_RECT);
            labelFont.Add(INIT_FONT);
            pic.Refresh();
        }

        /// <summary>
        /// 删除文本
        /// </summary>
        public void DelText()
        {
            if (TextIndex == -1) return;
            labelText.RemoveAt(TextIndex);
            labelRect.RemoveAt(TextIndex);
            labelFont.RemoveAt(TextIndex);
            TextIndex = -1;
            pic.Refresh();
            UpdateTextRect?.Invoke(new System.Drawing.Rectangle());
            UpdateTextString?.Invoke("", "", "");
        }

        /// <summary>
        /// 更新文本
        /// </summary>
        /// <param name="s1"></param>
        /// <param name="s2"></param>
        /// <param name="field"></param>
        public void UpdateText(string s1, string s2, string field)
        {
            if (TextIndex == -1) return;
            labelText[TextIndex].Prefix = s1;
            labelText[TextIndex].Suffix = s2;
            labelText[TextIndex].Field = field;
            pic.Refresh();
        }










        //====================事件====================
        private void Pic_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
        {
            //背景
            e.Graphics.FillRectangle(System.Drawing.Brushes.White, offset.X, offset.Y, Size.Width, Size.Height);
            e.Graphics.DrawRectangle(System.Drawing.Pens.Black, offset.X, offset.Y, Size.Width, Size.Height);
            //二维码
            e.Graphics.DrawImage(CodeSplicing.Properties.Resources.Show, QRcodeRect.X + offset.X, QRcodeRect.Y + offset.Y, QRcodeRect.Width, QRcodeRect.Height);
            //文本
            for (int i = 0; i < labelText.Count; i++)
            {
                System.Drawing.Rectangle layout = new System.Drawing.Rectangle(labelRect[i].X + offset.X, labelRect[i].Y + offset.Y, labelRect[i].Width, labelRect[i].Height);
                e.Graphics.DrawString(labelText[i].GetText(), labelFont[i], System.Drawing.Brushes.Black, layout);
                e.Graphics.DrawRectangle((i == TextIndex ? System.Drawing.Pens.Red : System.Drawing.Pens.LightGray), layout.X, layout.Y, layout.Width, layout.Height);
            }
        }

        private void Pic_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            if (e.Button == System.Windows.Forms.MouseButtons.Left)
            {
                int x = e.X - oldPoint.X;
                int y = e.Y - oldPoint.Y;

                if (TextIndex == -1)
                {
                    if (codeMove)
                    {
                        QRcodeRect = new System.Drawing.Rectangle(QRcodeRect.X + x, QRcodeRect.Y + y, QRcodeRect.Width, QRcodeRect.Height);
                        UpdateCodeRect?.Invoke();
                    }
                    else
                    {
                        offset.X += x;
                        offset.Y += y;
                    }
                }
                else
                {
                    labelRect[TextIndex] = new System.Drawing.Rectangle(labelRect[TextIndex].X + x, labelRect[TextIndex].Y + y, labelRect[TextIndex].Width, labelRect[TextIndex].Height);
                    UpdateTextRect?.Invoke(labelRect[TextIndex]);
                }

                oldPoint = e.Location;
                pic.Refresh();
            }
        }

        private void Pic_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            if (e.Button != System.Windows.Forms.MouseButtons.Left) return;
            oldPoint = e.Location;

            //查找文本索引
            TextIndex = labelRect.FindIndex(rr => rr.Contains(e.X - offset.X, e.Y - offset.Y));
            if (TextIndex == -1)
            {
                UpdateTextRect?.Invoke(new System.Drawing.Rectangle());
                UpdateTextString?.Invoke("", "", "");
                codeMove = QRcodeRect.Contains(e.X - offset.X, e.Y - offset.Y);
            }
            else
            {
                UpdateTextRect?.Invoke(labelRect[TextIndex]);
                UpdateTextString?.Invoke(labelText[TextIndex].Prefix, labelText[TextIndex].Suffix, labelText[TextIndex].Field);
            }

            pic.Refresh();
        }


        
    }
}