using MathStyle = DocumentFormat.OpenXml.Math.Style;
using MathStyleValues = DocumentFormat.OpenXml.Math.StyleValues;

namespace QWERTYkez.WordProcessor;

public record FontProps
{
    public FontProps(double? size = null) => Size = size ?? 12;

    public string? FontFamily { get; init; }

    public double? Size
    {
        get => _SizeD.HasValue ? _SizeD.Value / 2d : null;
        init => _SizeD = value.HasValue ? (uint?)(value.Value * 2) : null;
    }
    uint? _SizeD;

    public bool? IsItalic { get; init; }

    public bool? IsBold { get; init; }

    public UnderlineValues? Underline { get; init; }

    public VerticalPositionValues? SubSup { get; init; }

    public string? Color { get; init; }


    public bool TryExtract(out List<OpenXmlElement> list)
    {
        list = [];

        if (!string.IsNullOrWhiteSpace(FontFamily))
            list.Add(new RunFonts { Ascii = FontFamily, HighAnsi = FontFamily });

        if (_SizeD is { } sizeD)
            list.Add(new FontSize { Val = sizeD.ToString() });

        if (IsBold is { } isBold && isBold)
            list.Add(new Bold());

        if (IsItalic is { } isItalic && isItalic)
            list.Add(new Italic());

        if (Underline is { } underline)
            list.Add(new Underline { Val = underline });

        if (!string.IsNullOrWhiteSpace(Color))
            list.Add(new Color { Val = Color });

        if (SubSup is { } subsup)
            list.Add(new VerticalTextAlignment { Val = subsup });

        return list.Count > 0;
    }
    public bool TryExtractWithoutFamily(out List<OpenXmlElement> list)
    {
        list = [];

        if (_SizeD is { } sizeD)
            list.Add(new FontSize { Val = sizeD.ToString() });

        if (IsBold is { } isBold && isBold)
            list.Add(new Bold());

        if (IsItalic is { } isItalic && isItalic)
            list.Add(new Italic());

        if (Underline is { } underline)
            list.Add(new Underline { Val = underline });

        if (!string.IsNullOrWhiteSpace(Color))
            list.Add(new Color { Val = Color });

        if (SubSup is { } subsup)
            list.Add(new VerticalTextAlignment { Val = subsup });

        return list.Count > 0;
    }
    public bool TrySupExtract(out List<OpenXmlElement> list)
    {
        list = [];

        if (!string.IsNullOrWhiteSpace(FontFamily))
            list.Add(new RunFonts { Ascii = FontFamily, HighAnsi = FontFamily });

        if (_SizeD is { } sizeD)
            list.Add(new FontSize { Val = sizeD.ToString() });

        if (IsBold is { } isBold && isBold)
            list.Add(new Bold());

        if (IsItalic is { } isItalic && isItalic)
            list.Add(new Italic());

        if (Underline is { } underline)
            list.Add(new Underline { Val = underline });

        if (!string.IsNullOrWhiteSpace(Color))
            list.Add(new Color { Val = Color });

        list.Add(new VerticalTextAlignment { Val = VerticalPositionValues.Superscript });

        return list.Count > 0;
    }
    public bool TrySubExtract(out List<OpenXmlElement> list)
    {
        list = [];

        if (!string.IsNullOrWhiteSpace(FontFamily))
            list.Add(new RunFonts { Ascii = FontFamily, HighAnsi = FontFamily });

        if (_SizeD is { } sizeD)
            list.Add(new FontSize { Val = sizeD.ToString() });

        if (IsBold is { } isBold && isBold)
            list.Add(new Bold());

        if (IsItalic is { } isItalic && isItalic)
            list.Add(new Italic());

        if (Underline is { } underline)
            list.Add(new Underline { Val = underline });

        if (!string.IsNullOrWhiteSpace(Color))
            list.Add(new Color { Val = Color });

        list.Add(new VerticalTextAlignment { Val = VerticalPositionValues.Subscript });

        return list.Count > 0;
    }

    public bool TryExtractForMath(out List<OpenXmlElement> list)
    {
        list = [];

        // Для математики используем только элемент Style
        if (IsBold is { } isBold && isBold)
            list.Add(new MathStyle
            {
                Val = isBold
                    ? MathStyleValues.BoldItalic
                    : MathStyleValues.Italic
            });
        // Обычное начертание можно не добавлять, так как по умолчанию и так обычное
        // (но если нужно явно сбросить, можно добавить Style { Val = StyleValues.Plain })

        return list.Count > 0;
    }

    // Фабричные методы для создания FontProps
    public static FontProps Default => new();

    public static FontProps WithFont(string fontFamily, double? size = null) =>
        new(size) { FontFamily = fontFamily };

    public static FontProps WithSize(double size) =>
        new(size);

    public static FontProps WithStyle(bool bold = false, bool italic = false) =>
        new() { IsBold = bold, IsItalic = italic };

    public static FontProps WithColor(string hexColor) =>
        new() { Color = hexColor };

    public FontProps Override(FontProps? second)
    {
        if (second is null) return this;

        return new FontProps
        {
            FontFamily = second.FontFamily ?? FontFamily,
            Size = second.Size ?? Size,
            IsItalic = second.IsItalic ?? IsItalic,
            IsBold = second.IsBold ?? IsBold,
            Underline = second.Underline ?? Underline,
            SubSup = second.SubSup ?? SubSup,
            Color = second.Color ?? Color,
        };
    }
}