using System;
using System.IO;
using System.Reflection;
using PdfSharp.Fonts;

namespace timetracker.Server.Services
{
    public class PdfFontResolver : IFontResolver
    {
        public byte[] GetFont(string faceName)
        {
            var assembly = Assembly.GetExecutingAssembly();
            
            // Map faceName to Embedded Resource stream
            string resourceName = faceName.ToLower() switch
            {
                "opensans-bold" => "timetracker.Server.Fonts.OpenSans-Bold.ttf",
                _ => "timetracker.Server.Fonts.OpenSans-Regular.ttf"
            };

            using var stream = assembly.GetManifestResourceStream(resourceName);
            if (stream == null)
            {
                throw new InvalidOperationException($"Could not load font resource '{resourceName}'");
            }

            using var ms = new MemoryStream();
            stream.CopyTo(ms);
            return ms.ToArray();
        }

        public FontResolverInfo ResolveTypeface(string familyName, bool isBold, bool isItalic)
        {
            if (isBold)
            {
                return new FontResolverInfo("OpenSans-Bold");
            }
            return new FontResolverInfo("OpenSans-Regular");
        }
    }
}