using System;
using System.Collections.Generic;

using System.Windows;
using System.Windows.Media;

using SharpVectors.Renderers.Wpf;

namespace SharpVectors.Converters
{
    public sealed class FontFamilyVisitor : WpfFontFamilyVisitor
    {
        private FontFamily _arialFamily;

        public FontFamilyVisitor()
        {
            _arialFamily = new FontFamily("Arial");
        }

        public override WpfFontFamilyInfo Visit(string fontName, WpfFontFamilyInfo familyInfo, 
            WpfDrawingContext context)
        {
            if (String.IsNullOrEmpty(fontName))
            {
                return null;
            }

            if (fontName.StartsWith("Arial", StringComparison.OrdinalIgnoreCase) &&
                fontName.Length > 5)
            {
                if (String.Equals(fontName, "ArialMT",
                    StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, familyInfo.Weight,
                        familyInfo.Style, familyInfo.Stretch);
                }
                else if (String.Equals(fontName, "Arial-BoldMT",
                    StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, FontWeights.Bold,
                        familyInfo.Style, familyInfo.Stretch);
                }
                else if (String.Equals(fontName, "Arial-ItalicMT",
                    StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, familyInfo.Weight,
                        FontStyles.Italic, familyInfo.Stretch);
                }
                else if (String.Equals(fontName, "Arial-BoldItalicMT",
                    StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, FontWeights.Bold,
                        FontStyles.Italic, familyInfo.Stretch);
                }
                else if (String.Equals(fontName, "Arial Unicode MS",
                    StringComparison.OrdinalIgnoreCase))
                {
                    return null;
                }

                return new WpfFontFamilyInfo(_arialFamily, familyInfo.Weight,
                    familyInfo.Style, familyInfo.Stretch);
            }
            else if (fontName.StartsWith("Helvetica", StringComparison.OrdinalIgnoreCase))
            {
                if (String.Equals(fontName, "Helvetica", StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, familyInfo.Weight,
                        familyInfo.Style, familyInfo.Stretch);
                }
                else if (String.Equals(fontName, "Helvetica-Bold",
                    StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, FontWeights.Bold,
                        familyInfo.Style, familyInfo.Stretch);
                }
                else if (String.Equals(fontName, "Helvetica-Oblique",
                    StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, familyInfo.Weight,
                        FontStyles.Italic, familyInfo.Stretch);
                }
                else if (String.Equals(fontName, "Helvetica-BoldOblique",
                    StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, FontWeights.Bold,
                        FontStyles.Italic, familyInfo.Stretch);
                }

                return new WpfFontFamilyInfo(_arialFamily, familyInfo.Weight,
                    familyInfo.Style, familyInfo.Stretch);
            }
            else if (fontName.StartsWith("TimesNewRomanPS", StringComparison.OrdinalIgnoreCase))
            {
                if (String.Equals(fontName, "TimesNewRomanPSMT", StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, familyInfo.Weight,
                        familyInfo.Style, familyInfo.Stretch);
                }
                else if (String.Equals(fontName, "TimesNewRomanPS-BoldMT",
                    StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, FontWeights.Bold,
                        familyInfo.Style, familyInfo.Stretch);
                }
                else if (String.Equals(fontName, "TimesNewRomanPS-ItalicMT",
                    StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, familyInfo.Weight,
                        FontStyles.Italic, familyInfo.Stretch);
                }
                else if (String.Equals(fontName, "TimesNewRomanPS-BoldItalicMT",
                    StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, FontWeights.Bold,
                        FontStyles.Italic, familyInfo.Stretch);
                }

                return new WpfFontFamilyInfo(_arialFamily, familyInfo.Weight,
                    familyInfo.Style, familyInfo.Stretch);
            }
            else if (fontName.StartsWith("CourierNewPS", StringComparison.OrdinalIgnoreCase))
            {
                if (String.Equals(fontName, "CourierNewPSMT", StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, familyInfo.Weight,
                        familyInfo.Style, familyInfo.Stretch);
                }
                else if (String.Equals(fontName, "CourierNewPS-BoldMT",
                    StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, FontWeights.Bold,
                        familyInfo.Style, familyInfo.Stretch);
                }
                else if (String.Equals(fontName, "CourierNewPS-ItalicMT",
                    StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, familyInfo.Weight,
                        FontStyles.Italic, familyInfo.Stretch);
                }
                else if (String.Equals(fontName, "CourierNewPS-BoldItalicMT",
                    StringComparison.OrdinalIgnoreCase))
                {
                    return new WpfFontFamilyInfo(_arialFamily, FontWeights.Bold,
                        FontStyles.Italic, familyInfo.Stretch);
                }

                return new WpfFontFamilyInfo(_arialFamily, familyInfo.Weight,
                    familyInfo.Style, familyInfo.Stretch);
            }
            else if (fontName.Equals("MS-Gothic", StringComparison.OrdinalIgnoreCase))
            {
                return new WpfFontFamilyInfo(new FontFamily("MS Gothic"), familyInfo.Weight,
                    familyInfo.Style, familyInfo.Stretch);
                //return new WpfFontFamilyInfo(_arialFamily, familyInfo.Weight,
                //    familyInfo.Style, familyInfo.Stretch);
            }
            else if (fontName.Equals("MS-PGothic", StringComparison.OrdinalIgnoreCase))
            {
                return new WpfFontFamilyInfo(new FontFamily("MS PGothic"), familyInfo.Weight,
                    familyInfo.Style, familyInfo.Stretch);
            }
            else if (fontName.Equals("MS Pゴシック", StringComparison.OrdinalIgnoreCase))
            {
                return new WpfFontFamilyInfo(new FontFamily("MS PGothic"), familyInfo.Weight,
                    familyInfo.Style, familyInfo.Stretch);
            }

            return null;
            //return new WpfFontFamilyInfo(_arialFamily, familyInfo.Weight,
            //    familyInfo.Style, familyInfo.Stretch);
        }
    }
}